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Water at the top of Niagara Falls has a temperature of 11.0°C. If it falls a distance of 70.0 meter and all of its potential energy goes into heating the water, estimate the increase in temperature of the water at the bottom of the falls.
A 779-kg car stopped at an intersection is rear-ended by a 1820-kg truck moving with a speed of 15.0 m/s. If the car was in neutral and its brakes were off, so that the collision is approximately elastic, find out the final speed of both vehicles ..
A guitar string is 90.0 cm long and has a mass of 3.23g. find the frequencies of the fundamental and first two overtones
A microscope with an eyepiece lens of focal length 1.80 cm and an objective lens of focal length 0.95 cm is used to examine a section of the brain of a sacrificed rat. How far from the objective lens is the object
An ambulance siren is the source of sound emitted with a frequency of 1600 Hz. What is the frequency of the reflected sound wave heard at the ambulance
How numerous years would it take a thermally insulated one-million-kilogram chuck of granite to undergo a 1000k boost in temperature?
a fighter jet is launched from an aircraft carrier with the aid of its own engines and a steam-powered catapult. the
a boat crossing a wide river moves with a speed of 10 kmh relative to water. the water in the river has a uniform speed
An automobile has a vertical antenna 1.30 m long. The automobile travels eastward at 65 km/h on a horizontal road, Calculate the maximum magnitude of the induced emf in the antenna
Transvers waves: Speed of wave on streatched string. Two steel wires are stretched with the same tension. The first wire has a diameter of 0.610 mm and the second wire has a diameter of 0.910 mm
a 150 gm ice cube at 0.0 celcius is dropped into an insulated cup with 200 gm of water at 15 celcius. describe the final mixture after equilibrium has been reached
q1. a rectangular conducting loop of wire is approximately half-way into a magnetic ?eld b out of the page and is free
Two blocks, masses m1 and m2 are connected by an ideal string passing over an ideal pulley. Find the acceleration of each block
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