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1= A small, 100 g cart is moving at 1.70 m/son an air track when it collides with a larger, 1.00 kg cart at rest. After the collision, the small cart recoils at 0.860 m/s.
What is the speed of the large cart after the collision?
2= A kid at the junior high cafeteria wants to propel an empty milk carton along a lunch table by hitting it with a 2.9 g spit ball.
If he wants the speed of the 30 g carton just after the spit ball hits it to be 0.29 m/s , at what speed should his 2.9 g spit ball hit the carton?
Determine the magnitude of the resultant force FR = F1 + F2 and its direction, measured counterclockwise from the positive xaxis.
Solve the Friedmann equation to get the scale factor as a function of time.
A beam of light is emitted 8.2cm beneath the surface of a liquid and strikes the surface 7.2cm from the point directly above the source. what can you say about the index of refraction of the liquid
An electron moves to the right with a speed of 0.84c relative to the laboratory frame. Find the speed of the proton relative to the laboratory frame
A 1400 kg car has a maximum power output of 150 hp. How steep a hill can it climb at a constant speed of 74 km/h if the frictional forces add up to 700 N?
That is the sound from the organ bounces back and forth off the church walls many times before the sound inentsity decays away completely. If the reverberation time is 10s and the church has the approximate shape
You see lightning strike a mountaintop, and 2.98 s later you hear the accompanying thunder. How far away is the mountaintop
Blood flows in an aorta of radius 8.0 mm at 31 cm/s. Calculate the volume flow rate in liters per minute
Rocket mass 5000kg emits a mass of 10kg at 2000m/s at right angles...What is velocity of rocket after expulsion?
Protons can escape from the surface of the sun if their kinetic energy is sufficient to overcome the gravitational potential energy. a) Calculate the minimum speed necessary for escape
A nearsighted person cannot read a sign that is more than 5.2 mfrom his eyes. What is the focal length of the contacts
A farm house generates its own power at 120/240V AC. A 2-wire 240v copper wire line from the generator shed runs 930 ft to the barn, Calculate the line voltage drop
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