13232 + Interview Questions in Physics Page 47 InterviewSolution

2301.	The radius of the earth is about 6370 km. An object of mass 30 kg is taken to a height of 230 km above the surface of earth. (a) What is the mass of the body? (b) What is the acceleration due to gravity at this height? (c) What is the weight of the body at this height?
Answer» The radius of the earth is about 6370 km. An object of mass 30 kg is taken to a height of 230 km above the surface of earth. (a) What is the mass of the body? (b) What is the acceleration due to gravity at this height? (c) What is the weight of the body at this height?

Discussion

2302.	Is 50 metre per second square vector or scalar ?
Answer» Is 50 metre per second square vector or scalar ?

Discussion

2303.	An ant drags a piece of sweet from origin (0,0) to (3,4) in the co-ordinate axes. What is the work done by the ant if it applies a force of 1 N (1 unit = 1 metre)?
Answer» An ant drags a piece of sweet from origin (0,0) to (3,4) in the co-ordinate axes. What is the work done by the ant if it applies a force of 1 N (1 unit = 1 metre)?

Discussion

2304.	A train travels 20 km at a uniform speed of 60 km/h and next 20 km at a uniform speed of 80 km/h calculate its average speed.
Answer» A train travels 20 km at a uniform speed of 60 km/h and next 20 km at a uniform speed of 80 km/h calculate its average speed.

Discussion

2305.	Choose the correct statement: Statement 1: A body moves along the direction of force. Statement 2: A body moves in the direction of velocity. Statement 3: Forces acting inside the system are called interior forces. Statement 4: Forces acting outside the system are called external forces.
Answer» Choose the correct statement: Statement 1: A body moves along the direction of force. Statement 2: A body moves in the direction of velocity. Statement 3: Forces acting inside the system are called interior forces. Statement 4: Forces acting outside the system are called external forces.

2305.

Choose the correct statement: Statement 1: A body moves along the direction of force. Statement 2: A body moves in the direction of velocity. Statement 3: Forces acting inside the system are called interior forces. Statement 4: Forces acting outside the system are called external forces.

Answer»

Choose the correct statement:

Statement 1: A body moves along the direction of force.

Statement 2: A body moves in the direction of velocity.

Statement 3: Forces acting inside the system are called interior forces.

Statement 4: Forces acting outside the system are called external forces.

Discussion

2306.	Question 3 A trolley, while going down an inclined plane, has an acceleration of 2 cms−2. What will be its velocity 3 seconds after the start?
Answer» Question 3 A trolley, while going down an inclined plane, has an acceleration of $2 c m s^{- 2} .$ What will be its velocity 3 seconds after the start?

Discussion

2307.	If two equal weights of unequal volumes are balanced in air,what will happen when they are completely dipped in water ? Why ?
Answer» If two equal weights of unequal volumes are balanced in air,what will happen when they are completely dipped in water ? Why ?

Discussion

2308.	6. If w, joule work is done against gravitational attraction, to carry 10 kg mass from earth's surface to infinityThen the magnitude of workdone by gravitational attraction in bringing 20 kg mass from infinity to the centrewithout any acceleration is w2. Now if w2 nx w,. Find the value of n.
Answer» 6. If w, joule work is done against gravitational attraction, to carry 10 kg mass from earth's surface to infinityThen the magnitude of workdone by gravitational attraction in bringing 20 kg mass from infinity to the centrewithout any acceleration is w2. Now if w2 nx w,. Find the value of n.

Discussion

2309.	The speed of light in air is : (a) 3×108 m s−1 (b) 330 m s−1 (c) 5100 m s−1 (d) 3×1010 m s−1
Answer» The speed of light in air is : (a) $3 \times 10^{8} m s^{- 1}$ (b) $330 m s^{- 1}$ (c) $5100 m s^{- 1}$ (d) $3 \times 10^{10} m s^{- 1}$

2309.

The speed of light in air is : (a) 3×108 m s−1 (b) 330 m s−1 (c) 5100 m s−1 (d) 3×1010 m s−1

Answer»

The speed of light in air is :

(a) $3 \times 10^{8} m s^{- 1}$

(b) $330 m s^{- 1}$

(c) $5100 m s^{- 1}$

(d) $3 \times 10^{10} m s^{- 1}$

Discussion

2310.	Three resistances of 1, 2 and 3 are connected in parallel as shown in Figure below. If the main current is 2.2A find (a) the potential difference between P and Q (b) the current in each of the resistances. [3 MARKS]
Answer» Three resistances of 1, 2 and 3 are connected in parallel as shown in Figure below. If the main current is 2.2A find (a) the potential difference between P and Q (b) the current in each of the resistances. [3 MARKS]

2310.

Three resistances of 1, 2 and 3 are connected in parallel as shown in Figure below. If the main current is 2.2A find (a) the potential difference between P and Q (b) the current in each of the resistances. [3 MARKS]

Answer»

Three resistances of 1, 2 and 3 are connected in parallel as shown in Figure
below. If the main current is 2.2A find

(a) the potential difference between P and Q

(b) the current in each of the resistances. [3 MARKS]

Discussion

2311.	An insect moves along a circular path of radius 10 cm with a constant speed. If it takes 1 minute to move from a point on the path to the diametrically opposite point, then what is the distance it travels and the average velocity of the insect respectively?
Answer» An insect moves along a circular path of radius $10 cm$ with a constant speed. If it takes $1 minute$ to move from a point on the path to the diametrically opposite point, then what is the distance it travels and the average velocity of the insect respectively?

Discussion

2312.	Which of the following does not represent a distance-time graph?
Answer» Which of the following does not represent a distance-time graph?

Discussion

2313.	In a thermo-nuclear reaction, 10−3 kg of hydrogen is converted into 0.99×10−3 kg of helium. If the efficiency of the generator is 50% then the electrical energy generated in kWh is-
Answer» In a thermo-nuclear reaction, $10^{- 3} kg$ of hydrogen is converted into $0.99 \times 10^{- 3} kg$ of helium. If the efficiency of the generator is $50 %$ then the electrical energy generated in $kWh$ is-

Discussion

2314.	A plain sedimentation tank with a length of 20 m, width of 10 m, and a depth of 3 m is used in a water treatment plant to treat 4 million litre of water per day (4 MLD). The average temperature of water is 20∘C .The dynamic viscosity of water is 1.002×10−3Ns/m2 at 20∘C.Density of water is 998.2 kg/m3.Average specific gravity of particles is 2.65.What is the minimum diameter of the particles which can be removed with 100% efficiency in the above sedimentation tank?
Answer» A plain sedimentation tank with a length of $20 m$ , width of $10 m$ , and a depth of $3 m$ is used in a water treatment plant to treat 4 million litre of water per day (4 MLD). The average temperature of water is $20^{\circ} C$ . The dynamic viscosity of water is $1.002 \times 10^{- 3} N s / m^{2}$ at $20^{\circ} C$ . Density of water is 998.2 $k g / m^{3}$ . Average specific gravity of particles is $2.65$ . What is the minimum diameter of the particles which can be removed with 100% efficiency in the above sedimentation tank?

Discussion

2315.	mnimvertica7 43. A simple pendulum is oscillating without damping. Whenthe displacement of the bob is less than maximum, itsAnalyticalacceleration vector a is correctly shown in (2002, 2M)eat gener(1980ixed inchinall blooklown ACeleased freacheetic frictd DGF a(1980,8. A spherispace b(see fig,)betweendiameterfrictionlesin the figuwith the u
Answer» mnimvertica7 43. A simple pendulum is oscillating without damping. Whenthe displacement of the bob is less than maximum, itsAnalyticalacceleration vector a is correctly shown in (2002, 2M)eat gener(1980ixed inchinall blooklown ACeleased freacheetic frictd DGF a(1980,8. A spherispace b(see fig,)betweendiameterfrictionlesin the figuwith the u

Discussion

2316.	Consider the spring-mass system, with the mass submerged in water, as shown in the figure. The phase space diagram for one cycle of this system is
Answer» Consider the spring-mass system, with the mass submerged in water, as shown in the figure. The phase space diagram for one cycle of this system is

Discussion

2317.	What does the acceleration of a body depend upon?
Answer» What does the acceleration of a body depend upon?

Discussion

2318.	{ †ext { 2. A stone is thrown vertically upward with a speed of } } { 40 m / s †ext { . The time interval for which particle was } } { †ext { above } 40 m †ext { from the ground is } ( g = 10 m / s ^ { 2 } ) } { †ext { (1) } 4 \sqrt { 2 } s } { †ext { (2) } 8 s } { †ext { (3) } 4 s } { †ext { (4) } 2 \sqrt { 2 } s
Answer» { †ext { 2. A stone is thrown vertically upward with a speed of } } { 40 m / s †ext { . The time interval for which particle was } } { †ext { above } 40 m †ext { from the ground is } ( g = 10 m / s ^ { 2 } ) } { †ext { (1) } 4 \sqrt { 2 } s } { †ext { (2) } 8 s } { †ext { (3) } 4 s } { †ext { (4) } 2 \sqrt { 2 } s

Discussion

2319.	What is a fluid ?
Answer» What is a fluid ?

Discussion

2320.	The following position-time graph of an object shows that the body
Answer» The following position-time graph of an object shows that the body

2320.

The following position-time graph of an object shows that the body

Answer»

The following position-time graph of an object shows that the body

Discussion

2321.	How is the barometric height of a simple barometer affected if (a) its tube is pushed down into the trough of mercury? (b) its tube is slightly tilted from vertical? (c) a drop of liquid is inserted inside the tube?
Answer» How is the barometric height of a simple barometer affected if (a) its tube is pushed down into the trough of mercury? (b) its tube is slightly tilted from vertical? (c) a drop of liquid is inserted inside the tube?

2321.

How is the barometric height of a simple barometer affected if (a) its tube is pushed down into the trough of mercury? (b) its tube is slightly tilted from vertical? (c) a drop of liquid is inserted inside the tube?

Answer»

How is the barometric height of a simple barometer affected if

(a) its tube is pushed down into the trough of mercury?

(b) its tube is slightly tilted from vertical?

(c) a drop of liquid is inserted inside the tube?

Discussion

2322.	A body with an initial velocity of 5m/s has an acceleration of 2 m/s2 . What is the distance covered by it in the fourth second? __
Answer» A body with an initial velocity of 5m/s has an acceleration of 2 $m / s^{2}$ . What is the distance covered by it in the fourth second? __

Discussion

2323.	If Cs is the velocity of sound in air and C is the rms velocity in same air then the relation between C and Cs is
Answer» If Cs is the velocity of sound in air and C is the rms velocity in same air then the relation between C and Cs is

Discussion

2324.	The radius of cross section of an inflated cycle tyre is 7cm The dis†an ce of the centre of the cross section from the axle is 20cm Find the volume of air in the tyr
Answer» The radius of cross section of an inflated cycle tyre is 7cm The dis†an ce of the centre of the cross section from the axle is 20cm Find the volume of air in the tyr

Discussion

2325.	the horizontal range and maximum height reached by a projectile are r and h respectiely if a constant acceleration of g/2 is imparted to the projectile due to wind then new horizontal range is
Answer» the horizontal range and maximum height reached by a projectile are r and h respectiely if a constant acceleration of g/2 is imparted to the projectile due to wind then new horizontal range is

Discussion

2326.	A potentiometer has uniform potential gradient the specific resistance of the material of the Potentiometer wire is 0.1 micro ohm metre. the current passing through it is 0.1 ampere. the cross section of the wire is 10 micro metre square. the potential gradient along the Potentiometer wire is
Answer» A potentiometer has uniform potential gradient the specific resistance of the material of the Potentiometer wire is 0.1 micro ohm metre. the current passing through it is 0.1 ampere. the cross section of the wire is 10 micro metre square. the potential gradient along the Potentiometer wire is

Discussion

2327.	A body will continue in its state of rest or uniform motion in a straight line, unless acted by some external force. What does this statement represent?
Answer» A body will continue in its state of rest or uniform motion in a straight line, unless acted by some external force. What does this statement represent?

Discussion

2328.	The size of the bacteria is 3.8μ. Express the size of the bacteria in meter.
Answer» The size of the bacteria is $3.8 μ$ . Express the size of the bacteria in meter.

2328.

The size of the bacteria is 3.8μ. Express the size of the bacteria in meter.

Answer»

The size of the bacteria is $3.8 μ$ . Express the size of the bacteria in meter.

Discussion

2329.	The magnifying power of a telescope is 11, when it is in normal adjustment. The distance between the objective and the eyepiece is found to be 24 cm. The focal lengths of objective and eyepiece lenses are, respectively,
Answer» The magnifying power of a telescope is $11$ , when it is in normal adjustment. The distance between the objective and the eyepiece is found to be $24 cm$ . The focal lengths of objective and eyepiece lenses are, respectively,

Discussion

2330.	A electron goes undeflected when passes through a region with electric field and magnetic field. When electric field is said switched off then its path will change toA. Circular B. Parabola C. Straight line D. Helical
Answer» A electron goes undeflected when passes through a region with electric field and magnetic field. When electric field is said switched off then its path will change to A. Circular B. Parabola C. Straight line D. Helical

Discussion

2331.	An engine pumps water through a pipe. Water passes through the pipe and leaves it with a velocity of 2m/s. The mass per unit length of water in the pipe is 100 kg/m. What is the power of the engine?
Answer» An engine pumps water through a pipe. Water passes through the pipe and leaves it with a velocity of 2m/s. The mass per unit length of water in the pipe is 100 kg/m. What is the power of the engine?

Discussion

2332.	What are the differences between mechanical and non-mechanical waves?
Answer» What are the differences between mechanical and non-mechanical waves?

Discussion

2333.	A circular loop having variable radius r lies in a perpendicular magnetic field. If radius changes at the rate of alpha. Find emf at r=2x
Answer» A circular loop having variable radius r lies in a perpendicular magnetic field. If radius changes at the rate of alpha. Find emf at r=2x

Discussion

2334.	{ A body of mass }10 kg moves along a straight line }}{y=x+5, where }x and }y are in metres, with velocity }}{2\sqrt2m/s . Its angular momentum about a point }}{ having co-ordinate }(0,1) is
Answer» { A body of mass }10 kg moves along a straight line }}{y=x+5, where }x and }y are in metres, with velocity }}{2\sqrt2m/s . Its angular momentum about a point }}{ having co-ordinate }(0,1) is

Discussion

2335.	The refractive index of atmospheric layers decreases with increase in height above the earth's surface.If we view near the horizon,where will the apparent position of a star
Answer» The refractive index of atmospheric layers decreases with increase in height above the earth's surface.If we view near the horizon,where will the apparent position of a star

Discussion

2336.	If a charge of 600 C flows through the cross-section of a conducting wire in 5 minutes, what is the value of the current that flows through the wire?
Answer» If a charge of $600 C$ flows through the cross-section of a conducting wire in $5 minutes$ , what is the value of the current that flows through the wire?

Discussion

2337.	A particle is moving along a circular path of radius 6 m with uniform speed of 8 m/s .The average acceleration when the particle completes one half of the revolution is
Answer» A particle is moving along a circular path of radius 6 m with uniform speed of 8 m/s .The average acceleration when the particle completes one half of the revolution is

Discussion

2338.	A bomb at rest on a horizontal frictionless surface explodes and breaks into three pieces that fly apart horizontally as shown below. Select all of the following statements that must be true after the bomb has exploded. 1. The total kinetic energy of the bomb fragments is the same as that of the bomb before explosion. 2. The total momentum of the bomb fragments is the same as that of the bomb before explosion. 3. The total momentum of all the bomb fragments together is zero.
Answer» A bomb at rest on a horizontal frictionless surface explodes and breaks into three pieces that fly apart horizontally as shown below. Select all of the following statements that must be true after the bomb has exploded. 1. The total kinetic energy of the bomb fragments is the same as that of the bomb before explosion. 2. The total momentum of the bomb fragments is the same as that of the bomb before explosion. 3. The total momentum of all the bomb fragments together is zero.

2338.

A bomb at rest on a horizontal frictionless surface explodes and breaks into three pieces that fly apart horizontally as shown below. Select all of the following statements that must be true after the bomb has exploded. 1. The total kinetic energy of the bomb fragments is the same as that of the bomb before explosion. 2. The total momentum of the bomb fragments is the same as that of the bomb before explosion. 3. The total momentum of all the bomb fragments together is zero.

Answer»

A bomb at rest on a horizontal frictionless surface explodes and breaks into three pieces that fly apart horizontally as shown below. Select all of the following statements that must be true after the bomb has exploded.

1. The total kinetic energy of the bomb fragments is the same as that of the bomb before explosion.
2. The total momentum of the bomb fragments is the same as that of the bomb before explosion.
3. The total momentum of all the bomb fragments together is zero.

Discussion

2339.	Which of the following graphs correctly represents the relation between gravitational force of attraction (F) and the reciprocal of distance (1r) between two particles?
Answer» Which of the following graphs correctly represents the relation between gravitational force of attraction (F) and the reciprocal of distance $(\frac{1}{r})$ between two particles?

Discussion

2340.	Two stretched string of same materials vibrate in the fundamental mode under the same tension .If their frequenciesare in the ratio of1:3and ratio of vibrating length is 2:3.then the ratio of radius of the wire is
Answer» Two stretched string of same materials vibrate in the fundamental mode under the same tension .If their frequenciesare in the ratio of1:3and ratio of vibrating length is 2:3.then the ratio of radius of the wire is

Discussion

2341.	A man walks on a straight road from his home to a market 2.5km away with a speed of 5km/h. Finding the market closed, he instantly turns and walk back home with a speed of 7.5 km/h. The average speed of the man over the, the interval of time 0 to 40min is equal to?
Answer» A man walks on a straight road from his home to a market 2.5km away with a speed of 5km/h. Finding the market closed, he instantly turns and walk back home with a speed of 7.5 km/h. The average speed of the man over the, the interval of time 0 to 40min is equal to?

Discussion

2342.	The minimum stopping distance of a car moving with no velocity v is x. If the car is moving with velocity 2v then the minimum stopping distance will be
Answer» The minimum stopping distance of a car moving with no velocity v is x. If the car is moving with velocity 2v then the minimum stopping distance will be

Discussion

2343.	Concept of motion in a verticle circle
Answer» Concept of motion in a verticle circle

Discussion

2344.	A screw gauge was found to have a pitch equal to 0.8 mm. What should be the number of divisions on its head so that you can read up to 0.001 cm using this?
Answer» A screw gauge was found to have a pitch equal to 0.8 mm. What should be the number of divisions on its head so that you can read up to 0.001 cm using this?

Discussion

2345.	In the given figure, p=12 m and q=13 m. Find the length of r
Answer» In the given figure, $p = 12 m$ and $q = 13 m$ . Find the length of $r$

2345.

In the given figure, p=12 m and q=13 m. Find the length of r

Answer»

In the given figure, $p = 12 m$ and $q = 13 m$ . Find the length of $r$

Discussion

2346.	27. Integral of x2+1÷ x4+1 dx how to. Solve this type of probem
Answer» 27. Integral of x2+1÷ x4+1 dx how to. Solve this type of probem

Discussion

2347.	What are real life applications of impulsive force?
Answer» What are real life applications of impulsive force?

Discussion

2348.	If the radius of the earth were to be increased by a factor of 3, by what factor would its density have to be changed to keep the 'g' same.
Answer» If the radius of the earth were to be increased by a factor of 3, by what factor would its density have to be changed to keep the 'g' same.

Discussion

2349.	What is a shock wave? What is the difference between a sound wave and shock wave?
Answer» What is a shock wave? What is the difference between a sound wave and shock wave?

Discussion

2350.	Which of the following statements is correct about freezing on the basis of kinetic molecular theory?
Answer» Which of the following statements is correct about freezing on the basis of kinetic molecular theory?

Discussion

Explore topic-wise InterviewSolutions in .

The radius of the earth is about 6370 km. An object of mass 30 kg is taken to a height of 230 km above the surface of earth. (a) What is the mass of the body? (b) What is the acceleration due to gravity at this height? (c) What is the weight of the body at this height?

Is 50 metre per second square vector or scalar ?

An ant drags a piece of sweet from origin (0,0) to (3,4) in the co-ordinate axes. What is the work done by the ant if it applies a force of 1 N (1 unit = 1 metre)?

A train travels 20 km at a uniform speed of 60 km/h and next 20 km at a uniform speed of 80 km/h calculate its average speed.

Choose the correct statement: Statement 1: A body moves along the direction of force. Statement 2: A body moves in the direction of velocity. Statement 3: Forces acting inside the system are called interior forces. Statement 4: Forces acting outside the system are called external forces.

Question 3 A trolley, while going down an inclined plane, has an acceleration of 2 cms−2. What will be its velocity 3 seconds after the start?

If two equal weights of unequal volumes are balanced in air,what will happen when they are completely dipped in water ? Why ?

6. If w, joule work is done against gravitational attraction, to carry 10 kg mass from earth's surface to infinityThen the magnitude of workdone by gravitational attraction in bringing 20 kg mass from infinity to the centrewithout any acceleration is w2. Now if w2 nx w,. Find the value of n.

The speed of light in air is : (a) 3×108 m s−1 (b) 330 m s−1 (c) 5100 m s−1 (d) 3×1010 m s−1

Three resistances of 1, 2 and 3 are connected in parallel as shown in Figure below. If the main current is 2.2A find (a) the potential difference between P and Q (b) the current in each of the resistances. [3 MARKS]

An insect moves along a circular path of radius 10 cm with a constant speed. If it takes 1 minute to move from a point on the path to the diametrically opposite point, then what is the distance it travels and the average velocity of the insect respectively?

Which of the following does not represent a distance-time graph?

In a thermo-nuclear reaction, 10−3 kg of hydrogen is converted into 0.99×10−3 kg of helium. If the efficiency of the generator is 50% then the electrical energy generated in kWh is-

Consider the spring-mass system, with the mass submerged in water, as shown in the figure. The phase space diagram for one cycle of this system is

What does the acceleration of a body depend upon?

What is a fluid ?

The following position-time graph of an object shows that the body

How is the barometric height of a simple barometer affected if (a) its tube is pushed down into the trough of mercury? (b) its tube is slightly tilted from vertical? (c) a drop of liquid is inserted inside the tube?

A body with an initial velocity of 5m/s has an acceleration of 2 m/s2 . What is the distance covered by it in the fourth second? __

If Cs is the velocity of sound in air and C is the rms velocity in same air then the relation between C and Cs is

The radius of cross section of an inflated cycle tyre is 7cm The dis†an ce of the centre of the cross section from the axle is 20cm Find the volume of air in the tyr

the horizontal range and maximum height reached by a projectile are r and h respectiely if a constant acceleration of g/2 is imparted to the projectile due to wind then new horizontal range is

A potentiometer has uniform potential gradient the specific resistance of the material of the Potentiometer wire is 0.1 micro ohm metre. the current passing through it is 0.1 ampere. the cross section of the wire is 10 micro metre square. the potential gradient along the Potentiometer wire is

A body will continue in its state of rest or uniform motion in a straight line, unless acted by some external force. What does this statement represent?

The size of the bacteria is 3.8μ. Express the size of the bacteria in meter.

The magnifying power of a telescope is 11, when it is in normal adjustment. The distance between the objective and the eyepiece is found to be 24 cm. The focal lengths of objective and eyepiece lenses are, respectively,

A electron goes undeflected when passes through a region with electric field and magnetic field. When electric field is said switched off then its path will change toA. Circular B. Parabola C. Straight line D. Helical

An engine pumps water through a pipe. Water passes through the pipe and leaves it with a velocity of 2m/s. The mass per unit length of water in the pipe is 100 kg/m. What is the power of the engine?

What are the differences between mechanical and non-mechanical waves?

A circular loop having variable radius r lies in a perpendicular magnetic field. If radius changes at the rate of alpha. Find emf at r=2x

{ A body of mass }10 kg moves along a straight line }}{y=x+5, where }x and }y are in metres, with velocity }}{2\sqrt2m/s . Its angular momentum about a point }}{ having co-ordinate }(0,1) is

The refractive index of atmospheric layers decreases with increase in height above the earth's surface.If we view near the horizon,where will the apparent position of a star

If a charge of 600 C flows through the cross-section of a conducting wire in 5 minutes, what is the value of the current that flows through the wire?

A particle is moving along a circular path of radius 6 m with uniform speed of 8 m/s .The average acceleration when the particle completes one half of the revolution is

Which of the following graphs correctly represents the relation between gravitational force of attraction (F) and the reciprocal of distance (1r) between two particles?

Two stretched string of same materials vibrate in the fundamental mode under the same tension .If their frequenciesare in the ratio of1:3and ratio of vibrating length is 2:3.then the ratio of radius of the wire is

A man walks on a straight road from his home to a market 2.5km away with a speed of 5km/h. Finding the market closed, he instantly turns and walk back home with a speed of 7.5 km/h. The average speed of the man over the, the interval of time 0 to 40min is equal to?

The minimum stopping distance of a car moving with no velocity v is x. If the car is moving with velocity 2v then the minimum stopping distance will be

Concept of motion in a verticle circle

A screw gauge was found to have a pitch equal to 0.8 mm. What should be the number of divisions on its head so that you can read up to 0.001 cm using this?

In the given figure, p=12 m and q=13 m. Find the length of r

27. Integral of x2+1÷ x4+1 dx how to. Solve this type of probem

What are real life applications of impulsive force?

If the radius of the earth were to be increased by a factor of 3, by what factor would its density have to be changed to keep the 'g' same.

What is a shock wave? What is the difference between a sound wave and shock wave?

Which of the following statements is correct about freezing on the basis of kinetic molecular theory?