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What is the process of increasing the internal energy of a system called?
A pendulum has a length of 7.46 meter. Find its period. The acceleration of gravity is 9.8 m/s2. Find how long would the pendulum have to be to twice the period
Suppose you loft a ball in a tennis game with an initial speed of 16.5 m/s at an angle of 52.0 degrees above the horizontal. With what minimum average speed must he move
In a series circuit, r=21ohms L=25mH C=17uF V=150v and w=637rad/s, Calculate the peak current in the circuit
A tuning fork is sounded above a resonating tube (one end closed) which resonates at a length of 0.32 m, What is the frequency of the fork
A 0.100 kg block is suspended from a spring. When a small pebble of mass 40 g is placed on the block, What is the net force on the pebble when it is at a point of maximum upward displacement
Two 1.5 V batteries connected in a series to a 5 ohm resistor produce a 0.7 A current Find the internal resistance of batteries
The intensity of sunlight at the top of the earth's atmosphereis about 1390 W/m2.The distance between the sun and earth is 1.50 x 1011m, What is the intensity of sunlight that reaches the probe
a meteorologist for a tv station is using radar to determine the distance to a cloud. he notes that a time of 0.28ms
A projectile is launched from 1.5 m above the ground at some angle theta. what was its initial velocity and the angle of projection theta
The heat of vaporization of ethyl alcohol is about 200 cal/g. If 2.3 kg of it were allowed to vaporize in a refrigerator, how many grams of ice will be formed from 0°C water.
A catapult with a radial arm 4.15 m long accelerates a ball of mass 18.7 kg through a quarter circle. The ball leaves the apparatus at 49.7 m/s. Find the net torque exerted on the ball and arm
Two large equipotent surfaces are flat and parallel and separated by a relatively small distance compared to their size. One surface is at 25 V and the other is at 33 V. The surfaces are 1.25 cm apart. What is the direction of the electric field m..
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