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A person throws a ball straight up. He releases the ball at a height of 1.75 m above the ground and with a velocity of 12.0 m/s. Ignore the effects of air resistance. (a) How long until the ball reaches its highest point? (b) How high above the ground does the ball go?
If instead you have shown that Hypothesis A is not correct in one case, have you shown the Hypothesis A is not correct? Explain your reasoning.
A hydrogen atom in the n = 2 state absorbs a photon with wavelength 410nm, Find the change in the atom's potential energy
a 15 g lead bullet traveling at 240ms passes through a thin wall and emerges at a speed of 160ms . if the bullet
A 150 g copper bowl contains 220 g of water, both at 20.0ºC. A very hot 300g copper cylinder is dropped into the water, What was the original temperature of the cylinder
An object 2.00 cm high is placed 10 cm from a convex mirror with a focal length of magnitude 5 cm. Find the magnification of the mirror
in a photoelectric effect experiment, the cathode made of chromium (work function = 4.5 eV) is irradiated with ultraviolet light of wavelength 22 nm. what is the stopping potential
a steel wire has the following properties length 5.50m cross-sectional area 5.00times10?2cm2 youngs modulus
A 64 kg person on skis is going down a hill sloped at 30° from the horizontal. The coefficient of friction between the skis and the snow is 0.15. What would be the magnitude of acceleration.
A 75kg gunsmith uses a friction-less merry-go-round to estimate the speed of a .036g round fired from a gun. What was the speed of the round
Consider the scond hand on a clock which is smoothly rotating. Does it have linear velocity at the tip? Does it have tangential acceleration? If you spin a bucket full of water in a circle, why doesnt the water just fall out?
The orbital speed of a planet about its star is 2.8 104 m/s and its distance from the star is 1.6 1011 m. What is the magnitude of the force exerted by the star on the planet
100 g ball of clay is thrown horizontally with a speed of 13m/s toward a 900g block resting on a frictionless surface. It hits the block and sticks. The clay exerts a constant force on the block during the 7 ms it takes the clay to come to rest re..
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