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A golf ball of mass 4.50 x 10^-2 kg is struck by a club. Contact lasts 2.31 x 10^-4 s, and the ball leaves the tee with a horizontal velocity of 47.0 m/s. Compute the average force the club exerts on the ball by finding its average acceleration.
A 0.230- coffee cup at 19 is filled with 0.240 of brewed coffee at 97. The cup and the coffee come to thermal equilibrium at 79.If no heat is lost to the environment, what is specific heat of the cup material.
q1. a swimming pool has dimensions 28.0 m 7.0 m and a flat bottom. the pool is filled to a depth of 1.90 m with fresh
A step-up transformer has 26 turns on the primary coil and 770 turns on the secondary coil. what input current and voltage are needed
Estimate the thickness of lead shielding needed to reduce the exposure rate 2.5 m from a 5.92x10^11 Bq point source of Cs-137 to 1.0 mR/hr.
For this purpose you set up a measurement in which a proton and an electron are situated 901 nm from each other and you study the forces that the particles exert on each other.
Consider the Earth and a cloud layer 600 m above the planet to be the plates of a parallel-plate capacitor. what is the maximum charge the cloud can hold
q1. a cord is used to vertically lower an initially stationary block of mass m kg at a constant downward acceleration
A certain star is 9.80 light-years away. What is the distance traveled according to observers on the spacecraft
In a certain RL time constant circuit, it takes 135 msec for the current to reach maximum after the switch is closed.
q1. a tank with a volume of 0.150 m contains 27.0 degrees celsius helium gas at a pressure of 100 atm. how many
A child goes down a water slide and splashes into the water. At the top, the child has a speed of 4 m/s. how fast would the child be moving when she hits the water
A 473g wood block is given a quick push across a table. During the push it accelerates at a rate of 0.69m/s2, what was the strength of the force used to push the block to start with
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