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A litre of water is utilized to cool some electronics. If 1,000 Joules of heat is given off by the electronics, by what temperature does the water increase? One litre of water has a mass of 1 kg and a specific heat of 4.184 Joules/(g C°).
A bat can detect small objects, such as an insect, whose sizeis approximately equal to one wavelength of the sound the batmakes. what is the smallest insect a bat can detect
q1. an airplane has a mass of 20000 kg and takes off under the control of a constant net force of 30000 n. what is the
A laser that produces a spot of light that is 1.20 mm in diameter is shone perpendicularly on the center of a thin, what is the power of the laser
Radon is a radioactive gas, commonly found in the basement of ahouse. It has a half- life of 3.8 days. What is the decay constant of radon
You are jumping down from a small ledge 0.7 m high onto a concrete floor. what is the force exerted onto your feet during the landing
neglect air resistance for the following. a soccer ball is kicked from the ground into the air. when the ball is at a
A meter stick is freely pivoted about the 20 cm mark. Find the frequency of small amplitude oscillations
One kilogram of dry air at STP conditions is exposed to 1.00 R of X-rays. One roentgen is defined by Equation 32.1 in Section 32.1. An equivalent definition can be based on the fact that an exposure of one roentgen deposits 8.30 x 10-3 J of energy..
an object initially has kinetic energy k. the object then moves in the opposite direction with 13 times its initial
Think about Galileo's inclined plane experiments. If a metal marble rolls 15 cm in the first unit of time, how farwill it roll in the third unit of time?
The air around a spinning 142g baseball (below) of radius 3.55cm experiences a faster speed on the left than the right side, determine the pressure difference between the right and left sides of the ball
A metal rod 6.00 m long is held in a horizontal position. what is the torque exerted on the rod by the tension in the rope
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