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A 1.50 Volt battery supplies 0.150 Watt of power to a small flashlight for 15 minute.
(a) Determine how much charge does it move?
(b) Find how many electrons must move to carry this charge?
A ski tow operates on a 15.0o slope of length 300 meter. The rope moves at 12.0 km/h and provides power for 50 riders at one time, Find the power required to operate the tow
four standing wave segments or loops are observed on a string fixed at both ends as it vibrates at a frequency of 140
A Pyrex beaker that has a capacity of 1000cm3 at 20!C contains 990cm3 of mercury at that temperature. Is there some temperature at which the mercury will totally fill the beaker? Justify your answer (i.e., show this mathematically). Suppose that no m..
A standing wave on a 1.70 m long horizontal string displays three loops when the string vibrates at 125 Hz. What is the function describing the standing wave
cA person pushes a 16-kg lawn mower at constand speed with a force F= 80N directed along the handle, which is at an angle of 45 degrees to the horizontal. Determine the magnitude of the friction force present between the wheels and the grass.
A driver measures her "cold" tire gauge pressure to be 2.02 105 Pa. The measurement is made before driving, Find the final temperature of the air in the tires
A woman on a bridge 88.9 m high sees a raft floating at a constant speed on the river below, Find the speed of the raft
A small object is placed to the left of a convex lens and on it's optical axis. The object is 30 cm from the lens and has a focal length of 12 cm. Describe the nature of this image
to ensure a tight fit cylindrical metal elements are sometimes made the same size or even slightly larger than the
three charged particles with q1 -50 nanocoulomb q2 50 nanocoulomb q3 30 nanocoulomb are placed in a triangle. q1 and q2
A 114 gram hockey puck sent sliding over ice is stopped in 14.9 meter by the frictional force on it from the ice. Find the coefficient of friction between puck and ice
he Sun has an orbital speed of about 220 km/s around the centre of the Galaxy, Estimate the total mass of the Galaxy in Solar masses
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