13232 + Interview Questions in Physics Page 90 InterviewSolution

4451.	The area of the cross-section of press plunger of a hydraulic press is 4 m2. It is required to overcome a resistive load of 400 kgf on it. Calculate the force required on the pump plunger if the area of cross section of the pump plunger is 0.01 m2
Answer» The area of the cross-section of press plunger of a hydraulic press is $4 m^{2}$ . It is required to overcome a resistive load of $400 k g f$ on it. Calculate the force required on the pump plunger if the area of cross section of the pump plunger is $0.01 m^{2}$

Discussion

4452.	block of mass M is pulled along a horizontalfrictionless surface by a rope of mass m. Force P1s applied at one end of rope, The force whichthe rope exerts on the bock is-
Answer» block of mass M is pulled along a horizontalfrictionless surface by a rope of mass m. Force P1s applied at one end of rope, The force whichthe rope exerts on the bock is-

Discussion

4453.	'Note' is a sound : (a) of a mixture of several frequencies (b) of mixture of only two frequencies (c) of a single frequency (d) always unpleasant to listen to
Answer» 'Note' is a sound : (a) of a mixture of several frequencies (b) of mixture of only two frequencies (c) of a single frequency (d) always unpleasant to listen to

4453.

'Note' is a sound : (a) of a mixture of several frequencies (b) of mixture of only two frequencies (c) of a single frequency (d) always unpleasant to listen to

Answer»

'Note' is a sound :

(a) of a mixture of several frequencies

(b) of mixture of only two frequencies

(c) of a single frequency

(d) always unpleasant to listen to

Discussion

4454.	Question 4 A pair of bullocks exert a force of 140 N on a plough. The field being ploughed is 15 m long. How much work is done in ploughing the length of the field?
Answer» Question 4 A pair of bullocks exert a force of 140 N on a plough. The field being ploughed is 15 m long. How much work is done in ploughing the length of the field?

Discussion

4455.	A mass of M kg is suspended by a weightless string.The horizontal force that is required to displace it until the string makes an angle of 45^° with the initial vertical direction is (a)Mg(\sqrt{2-1}) (b)Mg\sqrt{2+1} (c)Mg\sqrt2 (d)Mg/\sqrt2 ??
Answer» A mass of M kg is suspended by a weightless string.The horizontal force that is required to displace it until the string makes an angle of 45^° with the initial vertical direction is (a)Mg(\sqrt{2-1}) (b)Mg\sqrt{2+1} (c)Mg\sqrt2 (d)Mg/\sqrt2 ??

Discussion

4456.	What is cataract? Explain with diagram. How is it treated? Mention two causes.
Answer» What is cataract? Explain with diagram. How is it treated? Mention two causes.

Discussion

4457.	In the above food web, if wild cat becomes extinct, then which population would increase the most?
Answer» In the above food web, if wild cat becomes extinct, then which population would increase the most?

Discussion

4458.	A ball of mass 200g is balanced by throwing balas of 10g vertically upwards with 2m/s. How many balls are thrown
Answer» A ball of mass 200g is balanced by throwing balas of 10g vertically upwards with 2m/s. How many balls are thrown

Discussion

4459.	What are the difficulties in using ground based optical telescopes? How are they overcome?
Answer» What are the difficulties in using ground based optical telescopes? How are they overcome?

Discussion

4460.	53.The blades of a windmill sweep out a circle of area A. If wind flows with a velocity v perpendicular to the blades of the windmill and its density is d, then the mechanical power received by the windmill?
Answer» 53.The blades of a windmill sweep out a circle of area A. If wind flows with a velocity v perpendicular to the blades of the windmill and its density is d, then the mechanical power received by the windmill?

Discussion

4461.	If a mothball loses volume by evaporation at a rate proportional to its instantaneous area. If the diameter of the ball decreases from 2 cm to 1 cm in 3 months, so the time before which the ball has practically gone is less than or equal to
Answer» If a mothball loses volume by evaporation at a rate proportional to its instantaneous area. If the diameter of the ball decreases from 2 cm to 1 cm in 3 months, so the time before which the ball has practically gone is less than or equal to

Discussion

4462.	a stone is thrown vertically upward with a speed of 40 m/s . the time interval for which particle was avbove 40 m from the ground is (g=10m/s^{2 )}
Answer» a stone is thrown vertically upward with a speed of 40 m/s . the time interval for which particle was avbove 40 m from the ground is (g=10m/s^{2 )}

Discussion

4463.	7.Write the increasing order of V (potential at a general point in conductor) i.e order of Va,Vb nd Vc.
Answer» 7.Write the increasing order of V (potential at a general point in conductor) i.e order of Va,Vb nd Vc.

Discussion

4464.	(a) The S.I. unit of work is (i) second (ii) metre (iii) joule (iv) Newton. (b) No work is done by a force if the body (i) moves in direction of the force (ii) does not move (iii) moves in the opposite direction (iv) none of these (c) Two coolies A and B do dome work in time 1 minute and 2 minutes respectively. The power spent is (i) same by both coolies (ii) is more by coolie A than by B (iii) is less by coolie A than by B (iv) nothing can be said (d) The expression of power P is (i) P = mgh (ii) P = 12mv2 (iii) P = F×d (iv) P =F×dt (e) 1 H.P. is equal to (i) 1 W (ii) 1 J (iii) 764 J (iv) 746 W (f) When a boy doubles his speed, his kinetic energy becomes (i) half (ii) double (iii) four times (iv) no change (g) A boy lifts a luggage from height 2 m to 4m. The potential energy will become (i) half (ii) double (iii) one- third (iv) one - fourth
Answer» (a) The S.I. unit of work is (i) second (ii) metre (iii) joule (iv) Newton. (b) No work is done by a force if the body (i) moves in direction of the force (ii) does not move (iii) moves in the opposite direction (iv) none of these (c) Two coolies A and B do dome work in time 1 minute and 2 minutes respectively. The power spent is (i) same by both coolies (ii) is more by coolie A than by B (iii) is less by coolie A than by B (iv) nothing can be said (d) The expression of power P is (i) P = mgh (ii) P = $\frac{1}{2} m v^{2}$ (iii) P = $F \times d$ (iv) P = $F \times \frac{d}{t}$ (e) 1 H.P. is equal to (i) 1 W (ii) 1 J (iii) 764 J (iv) 746 W (f) When a boy doubles his speed, his kinetic energy becomes (i) half (ii) double (iii) four times (iv) no change (g) A boy lifts a luggage from height 2 m to 4m. The potential energy will become (i) half (ii) double (iii) one- third (iv) one - fourth

4464.

(a) The S.I. unit of work is (i) second (ii) metre (iii) joule (iv) Newton. (b) No work is done by a force if the body (i) moves in direction of the force (ii) does not move (iii) moves in the opposite direction (iv) none of these (c) Two coolies A and B do dome work in time 1 minute and 2 minutes respectively. The power spent is (i) same by both coolies (ii) is more by coolie A than by B (iii) is less by coolie A than by B (iv) nothing can be said (d) The expression of power P is (i) P = mgh (ii) P = 12mv2 (iii) P = F×d (iv) P =F×dt (e) 1 H.P. is equal to (i) 1 W (ii) 1 J (iii) 764 J (iv) 746 W (f) When a boy doubles his speed, his kinetic energy becomes (i) half (ii) double (iii) four times (iv) no change (g) A boy lifts a luggage from height 2 m to 4m. The potential energy will become (i) half (ii) double (iii) one- third (iv) one - fourth

Answer»

(a) The S.I. unit of work is

(i) second (ii) metre

(iii) joule (iv) Newton.

(b) No work is done by a force if the body

(i) moves in direction of the force

(ii) does not move

(iii) moves in the opposite direction

(iv) none of these

(c) Two coolies A and B do dome work in time 1 minute and 2 minutes respectively. The power spent is

(i) same by both coolies

(ii) is more by coolie A than by B

(iii) is less by coolie A than by B

(iv) nothing can be said

(d) The expression of power P is

(i) P = mgh (ii) P = $\frac{1}{2} m v^{2}$

(iii) P = $F \times d$ (iv) P = $F \times \frac{d}{t}$

(e) 1 H.P. is equal to

(i) 1 W (ii) 1 J

(iii) 764 J (iv) 746 W

(f) When a boy doubles his speed, his kinetic energy becomes

(i) half (ii) double

(iii) four times (iv) no change

(g) A boy lifts a luggage from height 2 m to 4m. The potential energy will become

(i) half (ii) double

(iii) one- third (iv) one - fourth

Discussion

4465.	a suare cube of side a is placed in uniform magnetic field . find magnetic flux through each face of the cube
Answer» a suare cube of side a is placed in uniform magnetic field . find magnetic flux through each face of the cube

Discussion

4466.	A bullet moving with velocity ‘v′ penetrates a sandbag up to distance ′x′. The same bullet with velocity ′2v′ can penetrate bag up to a distance of:
Answer» A bullet moving with velocity $‘ v^{'}$ penetrates a sandbag up to distance $^{'} x^{'}$ . The same bullet with velocity $^{'} 2 v^{'}$ can penetrate bag up to a distance of:

Discussion

4467.	ntthe diameter of a stretched string is increased by 3% keeping the other parameters constant then the velocityn nt1) 3% increasen nt2) 3% decreasen nt3) 1.5% increasen nt4) 1.5 % decreasen ntn ntn
Answer» ntthe diameter of a stretched string is increased by 3% keeping the other parameters constant then the velocityn nt1) 3% increasen nt2) 3% decreasen nt3) 1.5% increasen nt4) 1.5 % decreasen ntn ntn

Discussion

4468.	A man is lying on the floor of a large, empty hemispherical hall, in such a way that his head is at the centre of the hall. He shouts “Hello!” and hears the echo of his voice after 0.2 s. What is the radius of the hall? (Take speed of sound = 340 m/s)
Answer» A man is lying on the floor of a large, empty hemispherical hall, in such a way that his head is at the centre of the hall. He shouts “Hello!” and hears the echo of his voice after 0.2 s. What is the radius of the hall? (Take speed of sound = 340 m/s)

Discussion

4469.	19. A particle of mass m is moving along y=b z=0 with constant speed v . State whether the angular momentum of particle about origin is increasing, decreasing or constant.
Answer» 19. A particle of mass m is moving along y=b z=0 with constant speed v . State whether the angular momentum of particle about origin is increasing, decreasing or constant.

Discussion

4470.	Calculate the pressure at a depth of 60 m under the sea in kPa, if the density of seawater is 1,025 kg m−3.(1 kPa=1000 Pa and g=10 m s−2)615
Answer» Calculate the pressure at a depth of $60 m$ under the sea in $kPa$ , if the density of seawater is $1, 025 {kg m}^{- 3}$ . ( $1 kPa = 1000 Pa$ and $g = 10 {m s}^{- 2}$ ) 615

Discussion

4471.	A boy is running with a velocity of 2 ms−1. He jumps over a stationary cart of 2 kg while running. If the mass of the boy is of 20 kg, find the velocity at which the cart moves after he jumps over the cart. (Neglect friction between the cart and ground)
Answer» A boy is running with a velocity of $2 m s^{- 1}$ . He jumps over a stationary cart of $2 k g$ while running. If the mass of the boy is of $20 k g$ , find the velocity at which the cart moves after he jumps over the cart. (Neglect friction between the cart and ground)

Discussion

4472.	A satellite of mass m is revolving close to surface of a planet of density d with Time period T. The value of universal gravitational constant on planet is given by
Answer» A satellite of mass m is revolving close to surface of a planet of density d with Time period T. The value of universal gravitational constant on planet is given by

Discussion

4473.	In which of the following conditions will the weight of a body would not be zero A. At the centre of the earth B. During a free fall C. In interplanetary space D. On a frictionless surface
Answer» In which of the following conditions will the weight of a body would not be zero A. At the centre of the earth B. During a free fall C. In interplanetary space D. On a frictionless surface

4473.

In which of the following conditions will the weight of a body would not be zero A. At the centre of the earth B. During a free fall C. In interplanetary space D. On a frictionless surface

Answer»

In which of the following conditions will the weight of a body would not be zero

A. At the centre of the earth

B. During a free fall

C. In interplanetary space

D. On a frictionless surface

Discussion

4474.	12.Two cars A and B are moving along straight line with constant acceleration as shown in the velocity time graph . The correct relation between their acceleration is
Answer» 12.Two cars A and B are moving along straight line with constant acceleration as shown in the velocity time graph . The correct relation between their acceleration is

Discussion

4475.	121.A particle of charge q and velocity v passes undeflected through a space with non-zero electric field E and magnetic field B . The undeflecting condition will hold if. (1)sign of both q and E are reversed (2)sign of both q and B are reversed (3) both B and E are changed in magnitude, but keeping the products of B and E fixed (4) both B and E are doubled in magnitude
Answer» 121.A particle of charge q and velocity v passes undeflected through a space with non-zero electric field E and magnetic field B . The undeflecting condition will hold if. (1)sign of both q and E are reversed (2)sign of both q and B are reversed (3) both B and E are changed in magnitude, but keeping the products of B and E fixed (4) both B and E are doubled in magnitude

Discussion

4476.	Question 6(ii)A courier-person cycles from a town to a neighbouring suburban area to deliver a parcel to a merchant. His distance from the town at different times is shown by the following graphHow much time did the person take for the travel?
Answer» Question 6(ii) A courier-person cycles from a town to a neighbouring suburban area to deliver a parcel to a merchant. His distance from the town at different times is shown by the following graph How much time did the person take for the travel?

Discussion

4477.	What is Sonar? Explain the working and application of Sonar.
Answer» What is Sonar? Explain the working and application of Sonar.

Discussion

4478.	How many times the pressure amplitude is increased if sound level is increased by 40 decibel
Answer» How many times the pressure amplitude is increased if sound level is increased by 40 decibel

Discussion

4479.	Write the relationship between mass and weight.
Answer» Write the relationship between mass and weight.

Discussion

4480.	What will be the ratio of the weight and mass of an object on the surface of the moon?
Answer» What will be the ratio of the weight and mass of an object on the surface of the moon?

Discussion

4481.	A ball is projected vertically upward from a top of a tower of height 20m at a speed 5m/s.Find:1. Maximum height reached by ball from ground. 2. Time when it passes its mean position. 3. Speed of ball just before hitting the ground. 4. Time taken by the ball to reach the ground.
Answer» A ball is projected vertically upward from a top of a tower of height 20m at a speed 5m/s.Find: 1. Maximum height reached by ball from ground. 2. Time when it passes its mean position. 3. Speed of ball just before hitting the ground. 4. Time taken by the ball to reach the ground.

Discussion

4482.	Find the current in the given circuit
Answer» Find the current in the given circuit

Discussion

4483.	What ia the diferrence between WEIGHT and MASS ??
Answer» What ia the diferrence between WEIGHT and MASS ??

Discussion

4484.	what is radius of curvature?
Answer» what is radius of curvature?

Discussion

4485.	The chamber in the Millikan oil drop method is filled with
Answer» The chamber in the Millikan oil drop method is filled with

Discussion

4486.	In a SONAR, ultrasonic waves are sent into the sea water and the reflected waves from a sunken ship are received after 2 s. If the velocity of waves in sea water is 1450 m s−1, find the depth of the sunken ship.
Answer» In a SONAR, ultrasonic waves are sent into the sea water and the reflected waves from a sunken ship are received after $2 s$ . If the velocity of waves in sea water is $1450 {m s}^{- 1}$ , find the depth of the sunken ship.

Discussion

4487.	Every particle in the universe attracts every other particle. This force is proportional to the product of their masses and inversely proportional to the square of the distance between them. Which law states this?
Answer» Every particle in the universe attracts every other particle. This force is proportional to the product of their masses and inversely proportional to the square of the distance between them. Which law states this?

Discussion

4488.	The kinetic energy of a body changes from 12 J to 60 J due to the action of a force of 5N on an object of mass 4 kg. The work done by the force is:
Answer» The kinetic energy of a body changes from 12 J to 60 J due to the action of a force of 5N on an object of mass 4 kg. The work done by the force is:

Discussion

4489.	Voltage drop across the conductor is having resistance 100Ω and current flowing through it is 5 A.
Answer» Voltage drop across the conductor is having resistance $100 Ω$ and current flowing through it is $5 A$ .

Discussion

4490.	A simple pendulum of mass ′m′, length ′l′ and charge ′+q′ suspended in the electric field produced by two conducting parallel plates as shown in the figure. The value of deflection of pendulum in equilibrium position will be(C1 and C2 are the capacitance of capacitors formed by parallel plates, without medium in between and with medium in between, respectively.)
Answer» A simple pendulum of mass $^{'} m^{'}$ , length $^{'} l^{'}$ and charge $^{'} + q^{'}$ suspended in the electric field produced by two conducting parallel plates as shown in the figure. The value of deflection of pendulum in equilibrium position will be $(C_{1}$ and $C_{2}$ are the capacitance of capacitors formed by parallel plates, without medium in between and with medium in between, respectively. $)$

Discussion

4491.	are heat of dissociation and heat of lattice same or different?and how?
Answer» are heat of dissociation and heat of lattice same or different?and how?

Discussion

4492.	A car falls off an edge and drops to the ground in 0.5 seconds. What is its speed on striking the ground? (Take g = 10 ms−2)
Answer» A car falls off an edge and drops to the ground in 0.5 seconds. What is its speed on striking the ground? (Take g = 10 $m s^{- 2}$ )

4492.

A car falls off an edge and drops to the ground in 0.5 seconds. What is its speed on striking the ground? (Take g = 10 ms−2)

Answer»

A car falls off an edge and drops to the ground in 0.5 seconds. What is its speed on striking the ground? (Take g = 10 $m s^{- 2}$ )

Discussion

4493.	How would Maya's life be different in South Africa today?
Answer» How would Maya's life be different in South Africa today?

Discussion

4494.	If anti-gravity is possible?
Answer» If anti-gravity is possible?

Discussion

4495.	A bullet of mass ‘m′, moving with a speed ‘v′ strikes a wooden block of mass M kept at rest and gets embedded in it. The speed of this embedded block will be:
Answer» A bullet of mass $‘ m^{'}$ , moving with a speed $‘ v^{'}$ strikes a wooden block of mass $M$ kept at rest and gets embedded in it. The speed of this embedded block will be:

Discussion

4496.	What is meant by scalar and vector quantities?
Answer» What is meant by scalar and vector quantities?

Discussion

4497.	Which of the following musical instruments is not matched with its vibrating part?
Answer» Which of the following musical instruments is not matched with its vibrating part?

Discussion

4498.	Figure shows the graph of x-cordinate of a particlemoving along x-axis as a function of time. Averagevelocity during = 0 to 6 s and instantaneousvelocity at t3s respectively, will be(m)2010-t (s)3 465012(2) 60 m/s, 0(1) 10 m/s, 0(4) 0, 10 m/s(3) 0, 0
Answer» Figure shows the graph of x-cordinate of a particlemoving along x-axis as a function of time. Averagevelocity during = 0 to 6 s and instantaneousvelocity at t3s respectively, will be(m)2010-t (s)3 465012(2) 60 m/s, 0(1) 10 m/s, 0(4) 0, 10 m/s(3) 0, 0

Discussion

4499.	In a uniform circular motion, which of the following is true?
Answer» In a uniform circular motion, which of the following is true?

Discussion

4500.	69.A sonar device on a submarine send out a signal And revives an echo 5 s later. Calculate the speed of sound in water if the distance of the object from the sumbrine is 3625 m.
Answer» 69.A sonar device on a submarine send out a signal And revives an echo 5 s later. Calculate the speed of sound in water if the distance of the object from the sumbrine is 3625 m.

Discussion

Explore topic-wise InterviewSolutions in .

The area of the cross-section of press plunger of a hydraulic press is 4 m2. It is required to overcome a resistive load of 400 kgf on it. Calculate the force required on the pump plunger if the area of cross section of the pump plunger is 0.01 m2

block of mass M is pulled along a horizontalfrictionless surface by a rope of mass m. Force P1s applied at one end of rope, The force whichthe rope exerts on the bock is-

'Note' is a sound : (a) of a mixture of several frequencies (b) of mixture of only two frequencies (c) of a single frequency (d) always unpleasant to listen to

Question 4 A pair of bullocks exert a force of 140 N on a plough. The field being ploughed is 15 m long. How much work is done in ploughing the length of the field?

A mass of M kg is suspended by a weightless string.The horizontal force that is required to displace it until the string makes an angle of 45^° with the initial vertical direction is (a)Mg(\sqrt{2-1}) (b)Mg\sqrt{2+1} (c)Mg\sqrt2 (d)Mg/\sqrt2 ??

What is cataract? Explain with diagram. How is it treated? Mention two causes.

In the above food web, if wild cat becomes extinct, then which population would increase the most?

A ball of mass 200g is balanced by throwing balas of 10g vertically upwards with 2m/s. How many balls are thrown

What are the difficulties in using ground based optical telescopes? How are they overcome?

53.The blades of a windmill sweep out a circle of area A. If wind flows with a velocity v perpendicular to the blades of the windmill and its density is d, then the mechanical power received by the windmill?

If a mothball loses volume by evaporation at a rate proportional to its instantaneous area. If the diameter of the ball decreases from 2 cm to 1 cm in 3 months, so the time before which the ball has practically gone is less than or equal to

a stone is thrown vertically upward with a speed of 40 m/s . the time interval for which particle was avbove 40 m from the ground is (g=10m/s^{2 )}

7.Write the increasing order of V (potential at a general point in conductor) i.e order of Va,Vb nd Vc.

a suare cube of side a is placed in uniform magnetic field . find magnetic flux through each face of the cube

A bullet moving with velocity ‘v′ penetrates a sandbag up to distance ′x′. The same bullet with velocity ′2v′ can penetrate bag up to a distance of:

ntthe diameter of a stretched string is increased by 3% keeping the other parameters constant then the velocityn nt1) 3% increasen nt2) 3% decreasen nt3) 1.5% increasen nt4) 1.5 % decreasen ntn ntn

A man is lying on the floor of a large, empty hemispherical hall, in such a way that his head is at the centre of the hall. He shouts “Hello!” and hears the echo of his voice after 0.2 s. What is the radius of the hall? (Take speed of sound = 340 m/s)

19. A particle of mass m is moving along y=b z=0 with constant speed v . State whether the angular momentum of particle about origin is increasing, decreasing or constant.

Calculate the pressure at a depth of 60 m under the sea in kPa, if the density of seawater is 1,025 kg m−3.(1 kPa=1000 Pa and g=10 m s−2)615

A boy is running with a velocity of 2 ms−1. He jumps over a stationary cart of 2 kg while running. If the mass of the boy is of 20 kg, find the velocity at which the cart moves after he jumps over the cart. (Neglect friction between the cart and ground)

A satellite of mass m is revolving close to surface of a planet of density d with Time period T. The value of universal gravitational constant on planet is given by

In which of the following conditions will the weight of a body would not be zero A. At the centre of the earth B. During a free fall C. In interplanetary space D. On a frictionless surface

12.Two cars A and B are moving along straight line with constant acceleration as shown in the velocity time graph . The correct relation between their acceleration is

Question 6(ii)A courier-person cycles from a town to a neighbouring suburban area to deliver a parcel to a merchant. His distance from the town at different times is shown by the following graphHow much time did the person take for the travel?

What is Sonar? Explain the working and application of Sonar.

How many times the pressure amplitude is increased if sound level is increased by 40 decibel

Write the relationship between mass and weight.

What will be the ratio of the weight and mass of an object on the surface of the moon?

A ball is projected vertically upward from a top of a tower of height 20m at a speed 5m/s.Find:1. Maximum height reached by ball from ground. 2. Time when it passes its mean position. 3. Speed of ball just before hitting the ground. 4. Time taken by the ball to reach the ground.

Find the current in the given circuit

What ia the diferrence between WEIGHT and MASS ??

what is radius of curvature?

The chamber in the Millikan oil drop method is filled with

In a SONAR, ultrasonic waves are sent into the sea water and the reflected waves from a sunken ship are received after 2 s. If the velocity of waves in sea water is 1450 m s−1​, find the depth of the sunken ship.

Every particle in the universe attracts every other particle. This force is proportional to the product of their masses and inversely proportional to the square of the distance between them. Which law states this?

The kinetic energy of a body changes from 12 J to 60 J due to the action of a force of 5N on an object of mass 4 kg. The work done by the force is:

Voltage drop across the conductor is having resistance 100Ω and current flowing through it is 5 A.

are heat of dissociation and heat of lattice same or different?and how?

A car falls off an edge and drops to the ground in 0.5 seconds. What is its speed on striking the ground? (Take g = 10 ms−2)

How would Maya's life be different in South Africa today?

If anti-gravity is possible?

A bullet of mass ‘m′, moving with a speed ‘v′ strikes a wooden block of mass M kept at rest and gets embedded in it. The speed of this embedded block will be:

What is meant by scalar and vector quantities?

Which of the following musical instruments is not matched with its vibrating part?

Figure shows the graph of x-cordinate of a particlemoving along x-axis as a function of time. Averagevelocity during = 0 to 6 s and instantaneousvelocity at t3s respectively, will be(m)2010-t (s)3 465012(2) 60 m/s, 0(1) 10 m/s, 0(4) 0, 10 m/s(3) 0, 0

In a uniform circular motion, which of the following is true?

69.A sonar device on a submarine send out a signal And revives an echo 5 s later. Calculate the speed of sound in water if the distance of the object from the sumbrine is 3625 m.

In a SONAR, ultrasonic waves are sent into the sea water and the reflected waves from a sunken ship are received after 2 s. If the velocity of waves in sea water is 1450 m s−1, find the depth of the sunken ship.