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The speed of light in material A is 1.4 times as large as it is inmaterial B. What is the ratio of the refractive indices ,nA/nB, of these materials?
A flywheel with a radius of 0.500m starts from rest and accelerates with a constant angular acceleration of 0.500rad/s2. Compute the magnitude of the radial acceleration of a point on its rim after it has turned through 60.0
A motor (mass of 180kg) sits on a horizontal 2.25 m masslessplank. The motor is 1.00 m from one end of the plank. Find the supporting force applied at each end of the plank to keep thesystem in equilibrium
A transmitter is operating at 4.00 kW of power. what is the average intensity of the signal 8.00 km from the transmitter
A 1.4-µC point charge is placed between the plates of a parallel plate capacitor. The charge experiences aforce of 0.44 N. What is the magnitude σ of thecharge density on either plate of the capacitor?
when mass m is at the position shown it is sliding down the inclined part of a slide at a speed of 2.27 ms. the mass
A room with 2.9m high ceilings has a metal plate on the floor with V= 0V and a separate metal plate on the ceiling. How high does the ball go if the ceiling voltage is 3.5×10^6V
a lantern slides down a driveway with an incline of 37 deg. If the coefficient of kinetic friction is .20. What is the acceleration of the lantern down the drive way
a 17.7-kg object hangs in equilibrium at the end of a rope taken as massless while a wind pushes the object with a
Suppose a muon produced as a result of a cosmic ray colliding with a nucleus in the upper atmosphere has a velocity v = 0.9500c. How far would it have traveled as observed on earth
The primary winding of an step-up transformer has 100 turns and the secondary has 1300 turns. If the RMS input voltage is 110 V, what is the RMS output voltage
A 2 kg mass is released from rest at the top of a plane inclined at20 degrees above the horizontal. The coefficient of kineticfriction between the mass and the plane is 0.20. What will be the speed of the mass after sliding 4 m along the plane?
Sketch complete free body force diagrams for each crate. A person with his ear to the ground sees a huge stone strike the concrete pavement a moment later 2 sounds are heard from an impact one travels in the air and the other in concrete.
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