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An electric current heats a 335 g copper wire from 25oC to 100.oC. How much heat was generated by the current? The specific heat of copper is 0.390 J/(g.Co).
A vulture circles around its prey and moves in a horizontal circle of radius 45 m with a speed of 15 m/s. at what angle should the vulture be banked so that it does not tend to slip sideways
An object moves with constant acceleration 4.00 m/s^2 and over a time interval reaches a final velocity of 12.0 m/s. If its initial velocity is 6.00 m/s, what is its displacement during the time interval?
Calculate the orbital period of Neptune (in yr) from knowledge of G, the mass of the sun (M = 1.99×1030 kg), and the orbital radius of Neptune of 3.00×101A.U
An observer on the earth sees a light pulse within a space ship moving at a constant speed of one-half the speed of light (0.5c). What speed does the observer measure for the light pulse
the space shuttle travels at a speed of about 7.80 x 103 ms. the blink of an astronauts eye lasts about 110 ms. how
A 8500 kg boxcar traveling at 16.8 m/s strikes a second boxcar at rest. What is the mass of the second car
is an adiabatic process and example of a quasi-static process? please explain throughly. i know an adiabatic process
A spelunker is surveying a cave. He follows a passage that goes 178 m straight west, then 214 m in a direction 45° east of south, then 283 m at 30° east of north. determine the fourth displacement
Write down an equation in terms of the 3 unknowns for the students canoeing upstream. This is of the form, velocity is equal to distance over time - Sketch a plot of velocity versus time.
What is the maximum speed of the car (in km/hr) in the similar turn in the rain, when the coefficient of static friction is reduced to 0.720.
Assume the Earth is a uniform solid sphere with radius of 6.37 × 10^6 m and mass of 5.97 × 10^24 kg. Find the magnitude of the angular momentum of the Earth due to rotation about its axis.
A sound wave of velocity 330 m/s and wavelength 0.70 m is produced for 0.50 s. What is the frequency of the wave? How many complete waves are emitted in this time interval? After 0.50 s, how far is the front of the wave from the source of the sound?
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