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1. What is a scalar quantity? Cite some examples of scalars.
2. What is a vector quantity? Give some examples of vectors.
3. What do we mean when we say that two vectors are equal?
4. Is vector addition "closed"?
The lower weight is a light bag filled with sand. Assume a pin pokes a hole in the bag and the sand slowly leaks out while the puck is revolving. What would be the puck's speed after all of the sand is gone.
A Carnot heat engine uses a hot reservoir consisting of a large amount of boiling water and a cold reservoir consisting of a large tub of ice and water. how much work W is performed by the engine
a charge of 10.4 micro-coulombs is placed at the origin of a coordinate system. another charge of -13.1 micro-coulombs
A hollow spherical shell has mass 7.95kg and radius 0.225m, What is the kinetic energy of the shell after it has turned through 6.75rev
You hold a ruler that has a charge on its tip 6 cm above a small piece of tissue paper to see if it can be picked up. find the minimum charge required to pick up the tissue paper
a light bulb is rated at 60w 120 v. what is a the resistance of the bulb? b the current through the bulb when
Hearing damage may occur when a person is exposed to a sound intensity level of 90.0 dB (relative to the threshold of human hearing) for a period of 9.00 hours
A cycle receives 500 Btu of heat at 1000°F and rejects 200 Btu of heat at 200°F. There is work input of 275 Btu and work output of 575 Btu. Compute the cycle efficiency
A 4.80 kg object is released from rest while fully submerged in a liquid. The liquid displaced by the submerged object has a mass of 3.25 kg. How far and in what direction does the object move in 0.250 s, assuming that it moves freely and that the dr..
What is closing equilibrium temperature of the tin-water
Which of the following devices uses total internal reflection function?
A box of mass 8.0 kilogram is accelerated from rest across a floor at a rate of 3.0 m/s for 6.0 s. Estimate what is the net work done on the box
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