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A soccer player kicks a ball horizontally off a 40.0 m cliff into a pool of water. If the player hears the sound of the spalsh 3.05 seconds later, what was the initial speed given to the rock? Assume the speed of sound in air to be 343 m/s.
A solid sphere and a solid cylinder with the same mass and radius roll down an inclined plane without slipping. Which one will reach the bottom of the incline first. Explain why. Assume friction is negligible for both.
A solid spherical ball of mass 2.3 kg and radius 0.11 m rolls along a smooth, What is the ball's rotational kinetic energy
What is the period of the motion.
You, Archimedes, suspect that the king's crown is not solid gold but is instead gold-plated lead. To test your theory, you weigh the crown, and find it to weigh 60.0 N, What percentage (by weight) of this crown is made of gold
A solid, uniform ball rolls without slipping up a hill, How far from the foot of the cliff does the ball land
A sanding disk with rotational inertia 8.1 x 10-3 kg·m2 is attached to an electric drill whose motor delivers a torque of magnitude 20N·m about central axis of the disk. About that axis and with torque applied for 29 ms, what is the magnitude of (..
A soccer player kicks a rock horizontally off a 41.9 m high cliff into a pool of water. If the playerhears the sound of the splash 3.09 slater, what was the initial speed given to the rock? Assume the speed of sound in air to be 343 m/s.
Two point charges are placed along a horizontal axis with the following values and positions: +1 µC at x = 0 cm, At what point (the coordinate) along the x axis is the electric field zero
Three positive particles of equal charge +11 uC, are located at the corners of an equilateral triangle of side 15.0 cm. calculate direction of the net force on each particle
Consider a Boeing 777-200 airplane of wing span 60.93 m cruising horizontally at Mach 0.785, Find the emf induced across its wing
A 5.9-kg rock and a 6.6 × 10-4-kg pebble are held near the surface of the earth. Determine the magnitude of the gravitational force exerted on each by the earth
What is the Carnot efficiency of a heat engine operating between the temperatures of 300 degrees C (573 K) and 100 degrees C (373 K)
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