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Consider a liquid drop of mass 83 mg falling with a terminal velocity of 5.9 m/s. Assuming a linear drag force R = bv, where v is the speed of the drop, what is the value of the constant b (in mg/s)?
A vertical straight wire carrying an upward 30-A current excerts an attractive force per unit length of 8.0*10^-4 N/m on a a second paralled wire 7.0 cm away
The sphere of a Van de Graaff generator has a radius of 20 cm. The belt "pumps" charge into the sphere at a current of 0.22 ?A. Neglecting losses, What is the electric field inside the sphere
The atoms in a regular crystal can act as slits for light of the appropriate wavelength. What wavelengths do you think would be appropriate
A uniformly charged conducting sphere of 1.5 m diameter has a surface charge density of 11 µC/m2. Find the net charge in coulombs on the sphere
Julie throws a ball to her friend Sarah. The ball leaves Julie's hand a distance 1.5 meters above the ground with an initial speed of 19.0 m/s at an angle 48.0 degrees; What is the vertical component of the ball's velocity right before Sarah catche..
An open container holds ice of mass 0.595 kg at a temperature of -19.6oC. How much time t melts passes before the ice starts to melt
A grindstone of radius 4.0 m is initially spinning with an angular speed of 8.0 rad/s. What is the average angular speed of the Grindstone
A 8.00 kg object is hung from the bottom end of a vertical spring fastened to an overhead beam. The object is set into vertical oscillations having a period of 2.90 s. Find the force constant of the spring.
A photocathode whose work function is 2.5 eV is illuminated by white light of wavelength range from 380 nm to 720 nm. What is the stopping voltage Vnot for this experiment
The position of a particle in cm is given by x = (7) cos 10?t, where t is in seconds. What is the amplitude of the particle's motion
A ball of mass 0.350 kg is swung at the end of a 2.40m string such that the plane of its path is horizontal, find the angle which the string makes with the verticle
A rectangular loop of wire that is 11 cm wide and 32 cm long lies in the x—y plane. The loop is in a region where the magnetic field is B = 1.1 T and makes and angle of 62° with the z axis. What is the magnitude of the magnetic flux during the loop?
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