50278 + Interview Questions in Physics Page 222 InterviewSolution

11051.	Theposition of a particle is given byWheretis in seconds and thecoefficients have the proper units for rto be in metres.(a) Find the vand aof the particle?(b) What is themagnitude and direction of velocity of the particle at t= 2.0 s?
Answer» The position of a particle is given by Where t is in seconds and the coefficients have the proper units for r to be in metres. (a) Find the v and a of the particle? (b) What is the magnitude and direction of velocity of the particle at t = 2.0 s?

11051.

Theposition of a particle is given byWheretis in seconds and thecoefficients have the proper units for rto be in metres.(a) Find the vand aof the particle?(b) What is themagnitude and direction of velocity of the particle at t= 2.0 s?

Answer»

The
position of a particle is given by

Where
t
is in seconds and the
coefficients have the proper units for r
to be in metres.

(a) Find the v
and a
of the particle?

(b) What is the
magnitude and direction of velocity of the particle at t
= 2.0 s?

11052.	A ray of light travelling in air have wavelength λ, frequency n and velocity v. If this ray enters into water then these parameters are λ′,n′ and v′ respectively. Which of the following relation is correct?
Answer» A ray of light travelling in air have wavelength $λ,$ frequency $n$ and velocity $v$ . If this ray enters into water then these parameters are $λ^{'}, n^{'}$ and $v^{'}$ respectively. Which of the following relation is correct?

Discussion

11053.	A wire of resistance x ohm is drawn out, so thatits length is increased to twice its original length,and its new resistance becomes 20 Ω then x will be(1) 5 Ω (3) 15 Ω (2) 10 Ω (4) 20 Ω
Answer» A wire of resistance x ohm is drawn out, so thatits length is increased to twice its original length,and its new resistance becomes 20 Ω then x will be(1) 5 Ω (3) 15 Ω (2) 10 Ω (4) 20 Ω

Discussion

11054.	A projectile is thrown with speed 40/s at an angle theta from horizontal. It is found that projectile is at same height at 1s and 3s. What is the angle of projection?
Answer» A projectile is thrown with speed 40/s at an angle theta from horizontal. It is found that projectile is at same height at 1s and 3s. What is the angle of projection?

Discussion

11055.	what is polarizability ??
Answer» what is polarizability ??

Discussion

11056.	A stone of mass 1 kg is tied with a string, and it is whirled in a vertical circle of radius 1 m. If tension at the highest point is 14 N, then velocity at the lowest point will be(Take value of g=10 m/s2)
Answer» A stone of mass $1 kg$ is tied with a string, and it is whirled in a vertical circle of radius $1 m$ . If tension at the highest point is $14 N$ , then velocity at the lowest point will be $($ Take value of $g = 10 {m/s}^{2})$

Discussion

11057.	35. Figure shows the displacemnt of a particle going along the X-axis as a function of time. The force acting on the particle is zero in which region
Answer» 35. Figure shows the displacemnt of a particle going along the X-axis as a function of time. The force acting on the particle is zero in which region

Discussion

11058.	Is kinetic energy directly proportional to intertia or inversely in both conditions first when angular momentum is conserved second when not conserved
Answer» Is kinetic energy directly proportional to intertia or inversely in both conditions first when angular momentum is conserved second when not conserved

Discussion

11059.	Rain is falling vertically with a speed of 12√3 m/s. A woman rides a bicycle with a speed of 12 m/s in East to West direction. What is the velocity of rain relative to the woman? (<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}-->Eastward and upward are positive x-axis and y-axis respectively)
Answer» Rain is falling vertically with a speed of $12 \sqrt{3} m/s$ . A woman rides a bicycle with a speed of $12 m/s$ in East to West direction. What is the velocity of rain relative to the woman? ( <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> Eastward and upward are positive x-axis and y-axis respectively)

Discussion

11060.	Five homogeneous bricks, each of length L=9 m are arranged as shown in the figure. Each of the bricks is displaced with respect to the next one in contact by L6 as shown in the figure below. Find the x− coordinate of the centre of mass relative to origin O.
Answer» Five homogeneous bricks, each of length $L = 9 m$ are arranged as shown in the figure. Each of the bricks is displaced with respect to the next one in contact by $\frac{L}{6}$ as shown in the figure below. Find the $x -$ coordinate of the centre of mass relative to origin $O$ .

Discussion

11061.	a uniform disk turns at 2.4rev/s around a frictionless axis.a non rotating rod ,of the same mass as the disk and length equal to disk's diameter is dropped onto the freely spinning disk.they then both turn around the axis with their centres superposed .what will be the angular frequency of the combination when they start rotating together.
Answer» a uniform disk turns at 2.4rev/s around a frictionless axis.a non rotating rod ,of the same mass as the disk and length equal to disk's diameter is dropped onto the freely spinning disk.they then both turn around the axis with their centres superposed .what will be the angular frequency of the combination when they start rotating together.

Discussion

11062.	Establish a relation between range and height
Answer» Establish a relation between range and height

Discussion

11063.	an isolated conducting sheet of area A is placed in a uniform electric field E , such that the electric field is perpendicular to the sheet and covers all the sheet. find out the charges appearing on its two surfaces
Answer» an isolated conducting sheet of area A is placed in a uniform electric field E , such that the electric field is perpendicular to the sheet and covers all the sheet. find out the charges appearing on its two surfaces

Discussion

11064.	In the figure shown below, all the op amps are ideal, The output voltage V0 is __ V.-17
Answer» In the figure shown below, all the op amps are ideal, The output voltage $V_{0}$ is __ V. -17

Discussion

11065.	A ship is streaming towards east with a speed of 8m/s.A women runs across the deck at a speed of 6m/s towards north what is the velocity of the women relative to a man sit s at the DECK.
Answer» A ship is streaming towards east with a speed of 8m/s.A women runs across the deck at a speed of 6m/s towards north what is the velocity of the women relative to a man sit s at the DECK.

Discussion

11066.	Howmuch electricity in terms of Faraday is required to produce(i) 20.0 g of Ca from molten CaCl2.(ii) 40.0 g of Al from molten Al2O3.
Answer» How much electricity in terms of Faraday is required to produce (i) 20.0 g of Ca from molten CaCl₂. (ii) 40.0 g of Al from molten Al₂O₃.

11066.

Howmuch electricity in terms of Faraday is required to produce(i) 20.0 g of Ca from molten CaCl2.(ii) 40.0 g of Al from molten Al2O3.

Answer»

How
much electricity in terms of Faraday is required to produce

(i)
20.0 g of Ca from molten CaCl₂.

(ii)
40.0 g of Al from molten Al₂O₃.

Discussion

11067.	The volume charge density as a function of distance x from one face inside a unit cube is varying as shown in the figure. Then the total flux (in S.I. units) through the cube if (ρ0=8.85×10−12 Cm−3) is x8. Find the value of x (integer only)
Answer» The volume charge density as a function of distance $x$ from one face inside a unit cube is varying as shown in the figure. Then the total flux (in S.I. units) through the cube if $(ρ_{0} = 8.85 \times 10^{- 12} {Cm}^{- 3})$ is $\frac{x}{8}$ . Find the value of $x$ (integer only)

Discussion

11068.	A photoelectric cell is illuminated by a lamp kept at distance d and now if the distance is reduced to d/2, number of electrons ejected per second will be
Answer» A photoelectric cell is illuminated by a lamp kept at distance d and now if the distance is reduced to d/2, number of electrons ejected per second will be

Discussion

11069.	9.What is the reason that when we give charge to some conductor then it spreads on its surface but not in its inner area
Answer» 9.What is the reason that when we give charge to some conductor then it spreads on its surface but not in its inner area

Discussion

11070.	(a) Twoinsulated charged copper spheres A and B have their centers separatedby a distance of 50 cm. What is the mutual force of electrostaticrepulsion if the charge on each is 6.5 × 10−7C? The radii of A and B are negligible compared to the distance ofseparation.(b) What isthe force of repulsion if each sphere is charged double the aboveamount, and the distance between them is halved?
Answer» (a) Two insulated charged copper spheres A and B have their centers separated by a distance of 50 cm. What is the mutual force of electrostatic repulsion if the charge on each is 6.5 × 10⁻⁷ C? The radii of A and B are negligible compared to the distance of separation. (b) What is the force of repulsion if each sphere is charged double the above amount, and the distance between them is halved?

11070.

(a) Twoinsulated charged copper spheres A and B have their centers separatedby a distance of 50 cm. What is the mutual force of electrostaticrepulsion if the charge on each is 6.5 × 10−7C? The radii of A and B are negligible compared to the distance ofseparation.(b) What isthe force of repulsion if each sphere is charged double the aboveamount, and the distance between them is halved?

Answer»

(a) Two
insulated charged copper spheres A and B have their centers separated
by a distance of 50 cm. What is the mutual force of electrostatic
repulsion if the charge on each is 6.5 × 10⁻⁷
C? The radii of A and B are negligible compared to the distance of
separation.

(b) What is
the force of repulsion if each sphere is charged double the above
amount, and the distance between them is halved?

Discussion

11071.	The diagram shows the velocity against time graph for the motion of a body along a straight path. What is its displacement in the first 5 s?
Answer» The diagram shows the velocity against time graph for the motion of a body along a straight path. What is its displacement in the first $5 s ?$

Discussion

11072.

A parallel beam of light consisting of two wavelengths λ1=4000 A∘ and λ2=8000 A∘ is incident perpendicular to plane of both slits in a typical young's double slit experiment. The separation between both slits is d=2 mm and the distance between slits and screen is D=1 m. In each situation of column-I a point ′p′ on screen is specified by its distance ′l′ from central bright on screen. Match the proper entries from column-II to column-I. Column-I Column-II (P) At p such that l=0.(1) Intensity is maximum for λ1=4000 A∘(Q) At p such that l=0.1 mm.(2) Intensity is minimum for λ1=4000 A∘(R) At p such that l=0.2 mm.(3) Intensity is maximum for λ2=8000 A∘(S) At p such that l=0.4 mm.(4) Intensity is minimum for λ2=8000 A∘

Answer»

A parallel beam of light consisting of two wavelengths $λ_{1} = 4000 A^{\circ}$ and $λ_{2} = 8000 A^{\circ}$ is incident perpendicular to plane of both slits in a typical young's double slit experiment. The separation between both slits is $d = 2 mm$ and the distance between slits and screen is $D = 1 m$ . In each situation of column-I a point $^{'} p^{'}$ on screen is specified by its distance $^{'} l^{'}$ from central bright on screen. Match the proper entries from column-II to column-I.

Column-I
Column-II

$(P)$ At $p$ such that $l = 0$ .	$(1)$ Intensity is maximum for $λ_{1} = 4000 A^{\circ}$
$(Q)$ At $p$ such that $l = 0.1 mm$ .	$(2)$ Intensity is minimum for $λ_{1} = 4000 A^{\circ}$
$(R)$ At $p$ such that $l = 0.2 mm$ .	$(3)$ Intensity is maximum for $λ_{2} = 8000 A^{\circ}$
$(S)$ At $p$ such that $l = 0.4 mm$ .	$(4)$ Intensity is minimum for $λ_{2} = 8000 A^{\circ}$

Discussion

11073.	Choose the correct option for the given vector?
Answer» Choose the correct option for the given vector?

11073.

Choose the correct option for the given vector?

Answer»

Choose the correct option for the given vector?

Discussion

11074.	Current in a circuit falls from 5.0 A to 0.0 A in 0.1 s. If an average emfof 200 V induced, give an estimate of the self-inductance of the circuit.
Answer» Current in a circuit falls from 5.0 A to 0.0 A in 0.1 s. If an average emfof 200 V induced, give an estimate of the self-inductance of the circuit.

Discussion

11075.	four tuning forks of frequencies 200 ,201,204 and 206 Hz are sounded together the beat frequency will be
Answer» four tuning forks of frequencies 200 ,201,204 and 206 Hz are sounded together the beat frequency will be

Discussion

11076.	2 kg of ice at −20∘C is mixed with 5 kg of water at 20∘C in an insulating vessel having a negligible heat capacity. Calculate the final mass of water remaining in the container. It is given that the specific heats of water and ice are 1 kcal/kg per∘C and 0.5 kcal/kg/∘C while the latent heat of fusion of ice is 80 kcal/kg.
Answer» $2 kg$ of ice at $- 20^{\circ} C$ is mixed with $5 kg$ of water at $20^{\circ} C$ in an insulating vessel having a negligible heat capacity. Calculate the final mass of water remaining in the container. It is given that the specific heats of water and ice are $1 {kcal/kg per}^{\circ} C$ and $0.5 {kcal/kg/}^{\circ} C$ while the latent heat of fusion of ice is $80 kcal/kg$ .

Discussion

11077.	Find the derivative of x2cosπ4sinx.
Answer» Find the derivative of $\frac{x^{2} cos \frac{π}{4}}{sin x} .$

Discussion

11078.	{}^{20}C_r={}^{20}C_{r-10},then {}^{18}C_{r }is equal to
Answer» {}^{20}C_r={}^{20}C_{r-10},then {}^{18}C_{r }is equal to

Discussion

11079.	The rms speed of oxygen molecules in a gas is V. If the temperature is doubled and oxygen molecules dissociate into oxygen atoms, the rms speed will become
Answer» The rms speed of oxygen molecules in a gas is $V$ . If the temperature is doubled and oxygen molecules dissociate into oxygen atoms, the rms speed will become

Discussion

11080.	calculate the magnifying power of a convex lens of focal length 2cm when the image is formed at the distinct vision .
Answer» calculate the magnifying power of a convex lens of focal length 2cm when the image is formed at the distinct vision .

Discussion

11081.	Find the induced emf in the square frame as shown in the figure.
Answer» Find the induced emf in the square frame as shown in the figure.

Discussion

11082.	A conductor has a resistance 5Ω at 50∘C and 6Ω at 100∘C. Find its resistance at 0∘C.
Answer» A conductor has a resistance $5 Ω$ at $50^{\circ} C$ and $6 Ω$ at $100^{\circ} C$ . Find its resistance at $0^{\circ} C$ .

Discussion

11083.	Why only Group-13 and Group-15 elements are used to increase the conductance of semiconductors?
Answer» Why only Group-13 and Group-15 elements are used to increase the conductance of semiconductors?

Discussion

11084.	A solid sphere of mass 1 kg and radius 10 cm rolls down an inclined plane of height 7 m. The velocity of its center as it reaches the ground level is
Answer» A solid sphere of mass $1 kg$ and radius $10 cm$ rolls down an inclined plane of height $7 m$ . The velocity of its center as it reaches the ground level is

Discussion

11085.	Obtainthe amount of necessaryto provide a radioactive source of 8.0 mCi strength. The half-life ofis5.3 years.
Answer» Obtain the amount of necessary to provide a radioactive source of 8.0 mCi strength. The half-life of is 5.3 years.

Discussion

11086.	A 50 Hz, 6-pole synchronous generator has 36 slots. It has a two winding with full-pitch coils of eight turns each. The flux per pole is 0.015Wb (Sinusoidally distributed). The induced emf when the coils are connected to form a 2-phase winding is _____V.436.84
Answer» A 50 Hz, 6-pole synchronous generator has 36 slots. It has a two winding with full-pitch coils of eight turns each. The flux per pole is 0.015Wb (Sinusoidally distributed). The induced emf when the coils are connected to form a 2-phase winding is _____V. 436.84

Discussion

11087.	A pendulum clock that keeps correct time on the earth is taken to the moon it will run
Answer» A pendulum clock that keeps correct time on the earth is taken to the moon it will run

Discussion

11088.	A circuit contains a battery, a capacitor, and a resistor as shown. The capacitor is initially uncharged, and the switch is closed at time t=0. When the charge on the capacitor is at 75% of its maximum possible value, what is the voltage drop across the resistor (in V) (integer only)
Answer» A circuit contains a battery, a capacitor, and a resistor as shown. The capacitor is initially uncharged, and the switch is closed at time $t = 0.$ When the charge on the capacitor is at $75 %$ of its maximum possible value, what is the voltage drop across the resistor (in $V$ ) (integer only)

Discussion

11089.	A long straight wire in the horizontal plane carries a current of 50 Ain north to south direction. Give the magnitude and direction of Bat a point 2.5 m east of the wire.
Answer» A long straight wire in the horizontal plane carries a current of 50 Ain north to south direction. Give the magnitude and direction of Bat a point 2.5 m east of the wire.

Discussion

11090.	A capacitor is formed by two square metal plates of edge 1 m, separated by a distance 1 mm. Dielectrics of dielectric constant K1 and K2 are filled in the gap as shown in figure. The new capacitance is [ Take ln2=0.7 ]
Answer» A capacitor is formed by two square metal plates of edge $1 m$ , separated by a distance $1 mm$ . Dielectrics of dielectric constant $K_{1}$ and $K_{2}$ are filled in the gap as shown in figure. The new capacitance is $[$ Take $ln 2 = 0.7]$

Discussion

11091.	TWO ELECTRIC BULBS WHOSE RESISTANCE ARE IN RATIO 1:2 ARE CONNECTED IN SERIES TO A CONSTANT VOLTAGE SOURCE,THE POWER DISSIPATED ARE IN RATIO
Answer» TWO ELECTRIC BULBS WHOSE RESISTANCE ARE IN RATIO 1:2 ARE CONNECTED IN SERIES TO A CONSTANT VOLTAGE SOURCE,THE POWER DISSIPATED ARE IN RATIO

Discussion

11092.	suppose the particle an electron projected horizontally with velocity v x = 2 into 10 to the power 6 metre per second if E between the plates separated by 0.5 cm is 9.1 into 10 to the power 2 Newton per coloumb where will the electrons strike the upper plate and here separation is given between the plates then how could we take the deflection and calculate where will it strike Is it like separation is twice the deflection length?
Answer» suppose the particle an electron projected horizontally with velocity v x = 2 into 10 to the power 6 metre per second if E between the plates separated by 0.5 cm is 9.1 into 10 to the power 2 Newton per coloumb where will the electrons strike the upper plate and here separation is given between the plates then how could we take the deflection and calculate where will it strike Is it like separation is twice the deflection length?

Discussion

11093.	Figure shows three identical springs A, B, C. when a 4 kg weight is hung on A, it descends by 1 cm. When a 6kg weight is hung on C, it will descend by
Answer» Figure shows three identical springs A, B, C. when a 4 kg weight is hung on A, it descends by 1 cm. When a 6kg weight is hung on C, it will descend by

Discussion

11094.	18. If Michael Jordan has a vertical leap of 1.29 m, then what is his takeoff speed and his hang time.
Answer» 18. If Michael Jordan has a vertical leap of 1.29 m, then what is his takeoff speed and his hang time.

Discussion

11095.	Two coils have a mutual inductance 0.005 H. The current changes in the first coil according to the equation I=im sin ωt where im=10 A and ω=100π rad s−1 . The maximum value of the emf induced in the second coil is
Answer» Two coils have a mutual inductance 0.005 H. The current changes in the first coil according to the equation $I = i_{m} s i n ω t w h e r e i_{m} = 10 A a n d ω = 100 π r a d s^{- 1}$ . The maximum value of the emf induced in the second coil is

Discussion

11096.	A tree trunk of diameter 20 cm lies in a horizontal field. A lazy grasshopper wants to jump over the trunk.Find the minimum take-off speed of grasshopper that will suffice. ( air resistance is negligible )
Answer» A tree trunk of diameter 20 cm lies in a horizontal field. A lazy grasshopper wants to jump over the trunk.Find the minimum take-off speed of grasshopper that will suffice. ( air resistance is negligible )

Discussion

11097.	what is an ideal solution
Answer» what is an ideal solution

Discussion

11098.	A charge 2×10^(-3) and mass 1 gm is projected from level ground woth a velocity 10 m/sec at an angle 37^° with horizontal along x direction.The electric potential in space V =3x+4y.What is the speed of charge when y coordinate is maximum
Answer» A charge 2×10^(-3) and mass 1 gm is projected from level ground woth a velocity 10 m/sec at an angle 37^° with horizontal along x direction.The electric potential in space V =3x+4y.What is the speed of charge when y coordinate is maximum

Discussion

11099.	For an ideal gas, the slope of V−T graph during an adiabatic process is dVdT=−m at a point where volume and temperature are V0 and T0. Find the value of CP of the gas. It is given that m is a positive number.
Answer» For an ideal gas, the slope of $V - T$ graph during an adiabatic process is $\frac{d V}{d T} = - m$ at a point where volume and temperature are $V_{0}$ and $T_{0}$ . Find the value of $C_{P}$ of the gas. It is given that $m$ is a positive number.

Discussion

11100.	Seven resistors are connected as shown in the diagram. The equivalent resistance in Ω of this network between A and B is:
Answer» Seven resistors are connected as shown in the diagram. The equivalent resistance in $Ω$ of this network between $A$ and $B$ is:

Discussion

Explore topic-wise InterviewSolutions in .

Theposition of a particle is given byWheretis in seconds and thecoefficients have the proper units for rto be in metres.(a) Find the vand aof the particle?(b) What is themagnitude and direction of velocity of the particle at t= 2.0 s?

A ray of light travelling in air have wavelength λ, frequency n and velocity v. If this ray enters into water then these parameters are λ′,n′ and v′ respectively. Which of the following relation is correct?

A wire of resistance x ohm is drawn out, so thatits length is increased to twice its original length,and its new resistance becomes 20 Ω then x will be(1) 5 Ω (3) 15 Ω (2) 10 Ω (4) 20 Ω

A projectile is thrown with speed 40/s at an angle theta from horizontal. It is found that projectile is at same height at 1s and 3s. What is the angle of projection?

what is polarizability ??

A stone of mass 1 kg is tied with a string, and it is whirled in a vertical circle of radius 1 m. If tension at the highest point is 14 N, then velocity at the lowest point will be(Take value of g=10 m/s2)

35. Figure shows the displacemnt of a particle going along the X-axis as a function of time. The force acting on the particle is zero in which region

Is kinetic energy directly proportional to intertia or inversely in both conditions first when angular momentum is conserved second when not conserved

Five homogeneous bricks, each of length L=9 m are arranged as shown in the figure. Each of the bricks is displaced with respect to the next one in contact by L6 as shown in the figure below. Find the x− coordinate of the centre of mass relative to origin O.

Establish a relation between range and height

an isolated conducting sheet of area A is placed in a uniform electric field E , such that the electric field is perpendicular to the sheet and covers all the sheet. find out the charges appearing on its two surfaces

In the figure shown below, all the op amps are ideal, The output voltage V0 is __ V.-17

A ship is streaming towards east with a speed of 8m/s.A women runs across the deck at a speed of 6m/s towards north what is the velocity of the women relative to a man sit s at the DECK.

Howmuch electricity in terms of Faraday is required to produce(i) 20.0 g of Ca from molten CaCl2.(ii) 40.0 g of Al from molten Al2O3.

The volume charge density as a function of distance x from one face inside a unit cube is varying as shown in the figure. Then the total flux (in S.I. units) through the cube if (ρ0=8.85×10−12 Cm−3) is x8. Find the value of x (integer only)

A photoelectric cell is illuminated by a lamp kept at distance d and now if the distance is reduced to d/2, number of electrons ejected per second will be

9.What is the reason that when we give charge to some conductor then it spreads on its surface but not in its inner area

The diagram shows the velocity against time graph for the motion of a body along a straight path. What is its displacement in the first 5 s?

Choose the correct option for the given vector?

Current in a circuit falls from 5.0 A to 0.0 A in 0.1 s. If an average emfof 200 V induced, give an estimate of the self-inductance of the circuit.

four tuning forks of frequencies 200 ,201,204 and 206 Hz are sounded together the beat frequency will be

Find the derivative of x2cosπ4sinx.

{}^{20}C_r={}^{20}C_{r-10},then {}^{18}C_{r }is equal to

The rms speed of oxygen molecules in a gas is V. If the temperature is doubled and oxygen molecules dissociate into oxygen atoms, the rms speed will become

calculate the magnifying power of a convex lens of focal length 2cm when the image is formed at the distinct vision .

Find the induced emf in the square frame as shown in the figure.

A conductor has a resistance 5Ω at 50∘C and 6Ω at 100∘C. Find its resistance at 0∘C.

Why only Group-13 and Group-15 elements are used to increase the conductance of semiconductors?

A solid sphere of mass 1 kg and radius 10 cm rolls down an inclined plane of height 7 m. The velocity of its center as it reaches the ground level is

Obtainthe amount of necessaryto provide a radioactive source of 8.0 mCi strength. The half-life ofis5.3 years.

A 50 Hz, 6-pole synchronous generator has 36 slots. It has a two winding with full-pitch coils of eight turns each. The flux per pole is 0.015Wb (Sinusoidally distributed). The induced emf when the coils are connected to form a 2-phase winding is _____V.436.84

A pendulum clock that keeps correct time on the earth is taken to the moon it will run

A circuit contains a battery, a capacitor, and a resistor as shown. The capacitor is initially uncharged, and the switch is closed at time t=0. When the charge on the capacitor is at 75% of its maximum possible value, what is the voltage drop across the resistor (in V) (integer only)

A long straight wire in the horizontal plane carries a current of 50 Ain north to south direction. Give the magnitude and direction of Bat a point 2.5 m east of the wire.

A capacitor is formed by two square metal plates of edge 1 m, separated by a distance 1 mm. Dielectrics of dielectric constant K1 and K2 are filled in the gap as shown in figure. The new capacitance is [ Take ln2=0.7 ]

TWO ELECTRIC BULBS WHOSE RESISTANCE ARE IN RATIO 1:2 ARE CONNECTED IN SERIES TO A CONSTANT VOLTAGE SOURCE,THE POWER DISSIPATED ARE IN RATIO

Figure shows three identical springs A, B, C. when a 4 kg weight is hung on A, it descends by 1 cm. When a 6kg weight is hung on C, it will descend by

18. If Michael Jordan has a vertical leap of 1.29 m, then what is his takeoff speed and his hang time.

Two coils have a mutual inductance 0.005 H. The current changes in the first coil according to the equation I=im sin ωt where im=10 A and ω=100π rad s−1 . The maximum value of the emf induced in the second coil is

A tree trunk of diameter 20 cm lies in a horizontal field. A lazy grasshopper wants to jump over the trunk.Find the minimum take-off speed of grasshopper that will suffice. ( air resistance is negligible )

what is an ideal solution

A charge 2×10^(-3) and mass 1 gm is projected from level ground woth a velocity 10 m/sec at an angle 37^° with horizontal along x direction.The electric potential in space V =3x+4y.What is the speed of charge when y coordinate is maximum

For an ideal gas, the slope of V−T graph during an adiabatic process is dVdT=−m at a point where volume and temperature are V0 and T0. Find the value of CP of the gas. It is given that m is a positive number.

Seven resistors are connected as shown in the diagram. The equivalent resistance in Ω of this network between A and B is: