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The Law of Conservation of Energy states energy is neither created nor destroyed. Explain what happens to the energy lost
What is meant by the "molarity" of a solution? Why are sticks, rather than logs, used to start a fire?
A golf ball of mass 0.045 kg is hit off the tee at a speed of 32m/s. Find the average force exerted on the ball by the golf club
A model rocket blasts off from the ground, rising straight upward with a constant acceleration that has a magnitude of 87.0 m/s2 for 1.95 seconds, What maximum altitude (above the ground) will the rocket reach
You are traveling on an airplane. The velocity of the plane with respect to the air is 180 m/s due east, How far east will the plane travel in 1 hour
An electrically neutral thin, square metal slab, measuring 4.80cm on a side is placed in a uniform external field, What is the total charge on the negative side of the slab
Under certain conditions, the human body can withstand an acceleration of 10 g's. What is the net force (in Newtons) acting on a person
An 85 cm long guitar string is plucked and vibrates a the fouth harmonic. What is the frequency of the sound produced if the speed of sound is 332 m/s
The earliest capacitors, called "Leyden jars" were made by wrapping conducting metal foil inside and outside glass jars. how tall would the jar have to be to reach a capacitance of 21.0 nF
A block of glass with flat sides is surrounded by air. A ray of light traveling in the glass (refractive index na) is incident on the flat interface with air at the top surface of the block of glass, What is the refractive index of the glass
One end of a post weighing 400N and with height hrests on a rough horizontal surface with μs=0.30. The upper end is held by a rope fastened to the surface and making an angle of 36.9o with the post. A horizontal force F→ is exerted on the post as s..
A solid sphere 29cm in radius carries 23uc, distributed uniformly throughout its volume. Find the electric field strength 19cm from the sphere's center
What potential difference is required to reduce the initial kinetic energy of the proton by a factor of 2? Express your answer using two significant figures.
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