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A person walks 23.0° north of east for 3.70 km. How far due north and how far due east would she have to walk to arrive at the same location?
a 0.120 kg croquet ball makes an elastic head-on collision with a second ball initially at rest. the second ball moves
If the ambulance is moving toward you at a speed of 26.3 m/s and you are moving toward it at a speed of 16.0 m/s, find the wavelength and frequency of the sound you hear
The temperature of the surface of a certain star is 7500 K. Most hydrogen atoms at surface of the star are in the electronic ground state. What is the approximate fraction of hydrogen atoms that are in the first excited state (and therefore could ..
A baseball is thrown with an initial velocity of 41.4m/s at an angle of 31.2 degree. Find the maximum height that the ball reaches using energy considerations
a transverse wave is propagated in a string stretched along the x-axis. the equation of the wave in si units is given
a massless pan hangs from a spring that is suspended from the ceiling. when empty the pan is 52 cm below the ceiling.
you are on a standard elavator . you are holding a fishing rod with a fish you just caught on the fishing line .the fish has a mass of 4kg. how much tension is in the fishing line
At the same instant that a 2.0-kg ball is dropped from 50 m above Earth, a second ball, What is the velocity of the center-of-mass of the two-ball system 0.5 seconds after the balls are released
A satellite is in orbit about Earth. Its orbital radius is1.99 × 107 meter. Find what is the orbital speed of the satellite in mi/s. 1 mi/s = 1609 m/s
How many bright fringes appear between the first diffraction-envelope minima to either side of the central maximum in a double-slit pattern if the wavelength of the light λ is 550 nm, the thickness of the slitsd is 0.150 mm, and the distance betwe..
A film of oil of index of refraction n = 1.44 floats on water (n = 1.33). Determine the minimum possible thickness of the oil film
An AC power generator produces 54 A (rms) at 3600 V. The voltage is stepped up to 100000 V by an ideal transformer, What percentage of the power delivered by the generator is dissipated as heat in the power line
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