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A 5.7 kg sphere makes a perfectly inelastic collision with a second sphere initially at rest (they stick together after the collision). The composite system moves with a speed equal to one third the original speed of the 5.7 kg sphere. What is the mass of the second sphere?
A 10-kg projectile launched over level ground has three times the kinetic energy at the moment of its launch as it does at its peak height. Find its impact velocity
Assume you are stopped in your car at a traffic light, and an ambulance approaches you from behind with a speed of 12 m/s. The siren on an ambulance produces sound with a frequency of 600 Hz. What frequency will you hear?
the size of the hydrogen atom grows in proportion to n2 where n is the principal quantum number. for the atom in the n
1) The intensity level of sound 200 m from a loud speaker at a heavy metal concert is 100 dB. At what distance from the speaker will the sound intensity level will be a tolerable 80 dB? Assume that thespeaker produce spherical sound wave.
you fly from bostons logan airport at sea level to denver at an altitude of 1.6 km. take your mass as 65 kg and the
A 1-kg wood ball and a 5-kg metal ball have identical shapes and sizes. They are dropped simultaneously from a tall tower. Each ball experiences the same drag force because both have the same shape.
Suppose the launch speed is doubled, and the projectile is fired at the same angle above the ground. What is the new range?
A 74 kg window cleaner uses a 10 kg ladder that is 5.3 mlong. He places one end on the ground 2.0m from a wall, rests the upper end against a cracked window, and climbs the ladder. He is 2.7 m up alongthe ladder when the window breaks.
a fuel pump sends gasoline from a cars fuel tank to the engine at a rate of 6.06 x 10-2 kgs. the density of the
The work required to stretch a certain spring from an elongation of 4.00 cm to an elongation of 5.00 cm is 30.5 J.
A person going for a morning jog on the deck of a cruise ship is running toward the bow of the ship at 2.2 m/s while the ship is moving ahead at 7.5 m/s. What is the jogger's velocity relative to the water now
A 2.75-kg block is sent up a ramp inclined at an angle (theta) = 31.5° from the horizontal. It is given an initial velocity v0 = 15.0 m/s up the ramp. How far up the ramp (in the direction along the ramp) does the block go
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