If the Sun passes directly overhead on at least one day per year, then
a. you are within 23.4° latitude of the equator.
b. you are within 66.6° latitude of the equator.
c. you must be exactly on the equator.
d. you could be anywhere because this occurs at least once per year at any location on the Earth.
a
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A futuristic design for a car is to have a large solid disk-shaped flywheel within the car storing kinetic energy. The uniform flywheel has mass 370 kg with a radius of 0.500 m and can rotate up to 230 rev/s
Assuming all of this stored kinetic energy could be transferred to the linear velocity of the 1600-kg\ car, find the maximum attainable speed of the car.
Which of the following is(are) drawbacks to the use of methane hydrate as a fuel?
a. When melted, it produces methane, a greenhouse gas. b. It is difficult to mine as a solid located at the bottom of the oceans. c. It is mixed with water. d. All of these are drawbacks associated with methane hydrate.
Consider a situation where you carry a 20-N box up a flight of stairs, raising its elevation by 5 m.You drop the box. As it falls to its original level, its kinetic energy is 100 J
a. True b. False Indicate whether the statement is true or false
When the frequency of the light is increased in a photoelectric effect experiment, the energy of the emitted electrons
a. increases. b. decreases. c. stays the same. d. becomes more quantized. e. becomes less quantized.