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Q. A light ray enter from air into a liquid at an angle of 53 degrees it is refracted making an angle of 37 degrees with the normal.find the refractive index of liquid.
Q. A solid cylinder with a radius of 4.0 {rm cm} has the same mass as a solid sphere of radius R. If the cylinder and sphere have the same moment of inertia about their centers, what is the sphere's radius?
A uniform solid disk with a mass of 23.8 kg and a radius of 0.712 m is free to rotate about a frictionless axle. Forces of 92.0 and 124 N are applied to the disk. Taking the clockwise direction to be the negative direction, what is (a) net torque pro..
The leader of a bicycle race is traveling with a constant velocity of +11.2 m/s and is 10.4 m ahead of the second-place cyclist. The second-place cyclist has a velocity of +9.50 m/s and an acceleration of +1.20 m/s2. How much time elapses before h..
If the patch is 78 meters wide and the average force of air resistance on the skier is 179 newtons, explain how fast is she going after crossing the patch?
What is its initial velocity as it leaves the ground. Two particles are fixed on an x axis.
A force of k is applied to an object for a small fraction of a second, t_k, less than the duration of one frame, t_f. Our simulation doesn't support applying forces for less than an entire frame, so if we wanted to simulate the effect of force k over..
A spring with spring constant 19 hangs from the ceiling. A ball is attached to the spring and allowed to come to rest. It is then pulled down 2.5 and released. The ball makes 33 oscillations in 15 seconds. What is its utmost speed.
The angular momentum of Earth is constant
Two free particles (that is, free to move) with charges +q and +4q are a distance L apart. A third charge is placed so that the entire system is in ?quilibrium. Find out the location, magnitude, and sign of the third charge.
A 246 kg wooden raft floats on a lake. as a 85 kg man stands on the raft, it sinks 5.0 cm deeper into the water. When he steps off, the raft vibrates for a while.
What is the IMA of the jack.
Two identical positive charges exert a repulsive force of 6.6 x10-9 N when separated by a distance of 5.4 10-10 m. what is the charge of each.
The rocket attains its launch speed in a negligibly short period of time, after which its engines shut down and the rocket coasts. Explain by how much does the rocket clear the top of the wall?
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