# Q

### A point charge q1 is concentric with two spherical conducting thick shells. The smaller spherical conducting shell has a net ?

b) What is the charge on the outer surface of the

smaller spherical conducting shell?

c)What is the charge on the inner surface of the

larger spherical conducting shell?

d)What is the charge on the outer surface of the

larger spherical conducting shell?

1 AnswerPhysics2 days ago### A point charge q1 is concentric with two spherical conducting thick shells. The smaller spherical conducting shell has a net ?

b) What is the charge on the outer surface of the

smaller spherical conducting shell?

c)What is the charge on the inner surface of the

larger spherical conducting shell?

d)What is the charge on the outer surface of the

larger spherical conducting shell?

1 AnswerPhysics3 days ago### A point charge of 2.5 µC is located at the center of a spherical shell of radius 28 cm, which has a charge −2.5 µC uniformly ?

A point charge of 2.5 µC is located at the

center of a spherical shell of radius 28 cm,

which has a charge −2.5 µC uniformly distributed on its surface. Find the electric field

for all points outside the spherical shell. The

Coulomb constant is 8.98755 × 109 N m2

/C

2

.

Answer in units of N/C.

Find the electric field for a point inside the

shell a distance 12 cm from the center.

Answer in units of N/C

Physics3 days ago### A conducting spherical shell having an inner radius of 4.6 cm and outer radius of 6 cm carries a net charge of 4.4 µC. A conducting sphere ?

A conducting spherical shell having an inner

radius of 4.6 cm and outer radius of 6 cm

carries a net charge of 4.4 µC. A conducting

sphere is placed at the center of this shell

having a radius of 0.7 cm carrying a net charge

of 1.2 µC.

Determine the surface charge density on the

inner surface of the shell.

Answer in units of C/m2

.

Physics3 days ago### A solid sphere of radius 28 cm has a total positive charge of 40.2 µC uniformly distributed?

a)A solid sphere of radius 28 cm has a total positive charge of 40.2 µC uniformly distributed

throughout its volume.

Calculate the magnitude of the electric field

at the center of the sphere.

Answer in units of N/C.

b)

Calculate the magnitude of the electric field

7 cm from the center of the sphere.

Answer in units of N/C.

c)

Calculate the magnitude of the electric field

28 cm from the center of the sphere.

Answer in units of N/C.

d)

Calculate the magnitude of the electric field

52.6 cm from the center of the sphere.

Answer in units of N/C.

Physics3 days ago### A rod 12.4 cm long is uniformly charged and has a total charge of −29.9 µC. Find the magnitude of the electric field along the axis of the ?

A rod 12.4 cm long is uniformly charged and

has a total charge of −29.9 µC.

Find the magnitude of the electric field

along the axis of the rod at a point 14.4644 cm

from the center of the rod. The Coulomb constant is 8.98755 × 109 N · m2

/C

2

.

Answer in units of N/C.

1 AnswerPhysics1 week ago### A particle whose mass is 3 kg moves in xyplane with a constant speed of 8 m/s in the positive x-direction along y = 5 m. ?

A particle whose mass is 3 kg moves in xyplane with a constant speed of 8 m/s in the positive x-direction along y = 5 m. Find the magnitude of its angular momentum relative to the point (x0,y0), where x0 = 2 m and y0 = 11 m. Answer in units of kgm2/s.

1 AnswerPhysics2 months ago### A ladder with a length of 10.0 m and weight of 562.0 N rests against a frictionless wall, making an angle of 55.0◦ with the horizontal. ?

a) A ladder with a length of 10.0 m and weight of 562.0 N rests against a frictionless wall, making an angle of 55.0◦ with the horizontal. Find the horizontal force exerted on the base of the ladder by Earth when a ﬁreﬁghter weighing 819.0 N is 3.97 m from the bottom of the ladder. Answer in units of N.

b) Find the vertical force exerted on the base of the ladder by Earth. Answer in units of N.

c) If the ladder is just on the verge of slipping when the ﬁreﬁghter is 7.21 m up, what is the coeﬃcient of staticfriction between the ladder and the ground?

2 AnswersPhysics2 months ago### A 0.101 kg meter stick is supported at its 40 cm mark by a string attached to the ceiling. A 0.609 kg object hangs vertically from ?

a) A 0.101 kg meter stick is supported at its 40 cm mark by a string attached to the ceiling. A 0.609 kg object hangs vertically from the 7.39 cm mark. A second mass is attached at another mark to keep it horizontal and in rotational and translational equilibrium. If the tension in the string attached to the ceiling is 16.7 N, ﬁnd the value of the second mass. The acceleration due to gravity is 9.8 m/s2 . Answer in units of kg.

b) Find the mark at which the second mass is attached. Answer in units of cm.

2 AnswersPhysics2 months ago### A 7.9 m, 231 kg uniform ladder rests against a smooth wall. The coeﬃcient of static friction between the ladder and the ground is 0.527, ?

A 7.9 m, 231 kg uniform ladder rests against a smooth wall. The coeﬃcient of static friction between the ladder and the ground is 0.527, and the ladder makes a 31.7◦ angle with the ground. How far up the ladder can a 924 kg person climb before the ladder begins to slip? The acceleration of gravity is 9.8 m/s2 . Answer in units of m.

1 AnswerPhysics2 months ago### A uniform, horizontal beam of length 16 m and mass 61 kg is pivoted at the wall, with its far end supported by a cable that makes an angle?

A uniform, horizontal beam of length 16 m and mass 61 kg is pivoted at the wall, with its far end supported by a cable that makes an angle of 39◦ with the horizontal. If a person of mass 53 kg stands 14 m from the pivot, what is the tension in the cable? The acceleration of gravity is 9.8 m/s2 . Answer in units of kN.

1 AnswerPhysics3 months ago### A uniform rod pivoted at one end point O is free to swing in a vertical plane in a gravitational ﬁeld, held in equilibrium by a force ?

A uniform rod pivoted at one end point O is free to swing in a vertical plane in a gravitational ﬁeld, held in equilibrium by a force at its other end.

1. Fx cosθ − Rx sinθ = 0

2. −Rx + Fx = 0

3. Fx = 0

4. Rx − Fx sinθ = 0

5. Rx − Fx cosθ = 0

010 (part 2 of 3) 10.0 points What is the condition for translational equilibrium along the vertical y direction?

1. W − Ry + Fy = 0

2. Ry + Fy − W = 0

3. Ry + Fy = 0

4. Ry sinθ + Fy sinθ − W cosθ = 0

5. Ry − Fy + W = 0

011 (part 3 of 3) 10.0 points Taking the origin (point O) as the pivot point, what is the condition for rotational equilibrium?

Physics3 months ago### Consider an extended object (not a point), with forces ~ F acting on it, producing torques ~τ. Is it possible for a situationto?

Consider an extended object (not a point), with forces ~ F acting on it, producing torques ~τ. Is it possible for a situationto exist in which the net force acting on the object (the net force is the sum of all the individual forces acting on the object) isequal to zeroX~ F = 0 while the net torque about any axis (the net torque is the sum of all the torques acting on the object) is not equal to zeroX~τ 6= 0?

1. No.

2. Yes

Is it possible for a situation to exist in which the net torque acting on the object is zero X~τ = 0while the net force acting on the object is not equal to zeroX~ F 6= 0? 1. Yes.

2. No.

1 AnswerPhysics3 months ago### Use Green's Theorem to evaluate F · dr. C (Check the orientation of the curve before applying the theorem.) F(x, y) = ?

Use Green's Theorem to evaluate

F · dr. C

(Check the orientation of the curve before applying the theorem.)

F(x, y) = y cos(x) − xy sin(x), xy + x cos(x)

, C is the triangle from (0, 0) to (0, 8) to (2, 0) to (0, 0)

Mathematics3 months ago### 5z2 = 2x2 + 2y2?

Write the equation in spherical coordinates.

(a)

5z^2 = 2x^2 + 2y^2

1 AnswerMathematics3 months ago### At time t = 1, a particle is located at position (x, y) = (5, 3). If it moves in the velocity field ?

At time

t = 1,

a particle is located at position

(x, y) = (5, 3).

If it moves in the velocity field

F(x, y) = (xy − 1, y2 − 9 )

find its approximate location at time

t = 1.02

1 AnswerPhysics3 months ago### Consider the setup shown below. The blocks have masses 8.4 kg and 25 kg. The pulley has mass 6.1 kg, and is a uniform disc with ?

Consider the setup shown below. The blocks have masses 8.4 kg ( on the ramp) and 25 kg.(vertically hanged) The pulley has mass 6.1 kg, and is a uniform disc with radius 0.17 m. Assume the pulley to be frictionless, but the coeﬃcient of friction between the block and the surface is 0.27.

What is the acceleration of the blocks? Assume the 25 kg mass is descending with acceleration a. The moment of inertia of the disk is 1 2 M R2 and the acceleration of gravity is 9.8 m/s2 . Answer in units of m/s2. theta=31

3 AnswersPhysics3 months ago### A 104 N sphere 0.29 m in radius starts from rest and rolls (without slipping) 8 m down a ramp that is inclined at 43◦ with the horizontal.?

A 104 N sphere 0.29 m in radius starts from rest and rolls (without slipping) 8 m down a ramp that is inclined at 43◦ with the horizontal. What is the angular speed of the sphere at the bottom of the slope if it starts from rest? The acceleration of gravity is 9.8 m/s2 . Answer in units of rad/s

1 AnswerPhysics3 months ago### A bucket full of water is rotated in a vertical circle of radius 0.63 m (the approximate length of a person’s arm)..?

15) A bucket full of water is rotated in a vertical circle of radius 0.63 m (the approximate length of a person’s arm). What must be the minimum speed of the pail at the top of the circle if no water is to spill out? Answer in units of m/s.

2 AnswersPhysics3 months ago### A 90 g coin sits on a horizontally rotating turntable. The turntable makes one revolution each 2 s. The coin is located 12 cm ?

10) A 90 g coin sits on a horizontally rotating turntable. The turntable makes one revolution each 2 s. The coin is located 12 cm from the axis of rotation of the turntable. The acceleration of gravity is 9.81 m/s2 . What is the frictional force acting on the coin? Answer in units of N.

The coin will slide oﬀ the turntable if it is located more than 29 cm from the axis of rotation. What is the coeﬃcient of static friction?

2 AnswersPhysics3 months ago