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A 47.0 g golf ball is driven from the tee with an initial speed of 56.0 m/s and rises to a height of 26.0 m.
(a) Neglect air resistance and determine the kinetic energy of the ball at its highest point.
(b) What is its speed when it is 9.0 m below its highest point?
A small rock with mass 0.12 is fastened to a massless string with length 0.80 to form a pendulum. The pendulum is swinging so as to make a maximum angle of 45 with the vertical. Air resistance is negligible.
A wall clock has a second hand 20.0 long. What is the radial acceleration of the tip of this hand?
In order to calculate th number of ways of arranging a given amount of energy in a tiny block of copper, How many atoms are in the copper block
A copper wire has a 25-m ohm resistance at 20 degrees C. When the wire is carrying a current, What is the change in the wire's resistance
A solid uniform marble and a block of ice, each with the same mass, start from rest at the same height, Which object is moving faster at the bottom, the ice or the marble
A ladder 2.85 m long, weighing 228 N, initially lies flat on the ground. Compute the work done by the force lifting the ladder
A large truck collides head-on with a small car. The car is severely damaged as a result of the collision. According to Newton's third law, how do the forces acting between the truck and car compare during the collision?
An unstable particle with a mass equal to 3.34 10-27 kg is initially at rest. Find the masses of the fragments
In an experiment designed to measure the strength of a uniform magnetic field produced by a set coils, find the angular frequency of revolution of the electrons
A ball is fired at an angle of 45 degrees from ground level in the absence of air resistance. If the maximum range is 27m then what is its inital speed and what is the time of flight
A horizontal plank of mass m and length L is pivoted at one end. The plank's other end is supported by a spring of force constant k. The moment of inertia of the plank about the pivot is .
A 20kg hollow plastic sphere with a diameter of 130cm is used as a float to support an iron block in the water. What is the mass of the iron block
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