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A cannon ball (m=.7 kg) traveling at 200m/s hits and is impeded into a 400 kg car. If the car was initially at rest, what will be its velocity after the impact?
An aluminum rod is 24.0 cm long at 20°C and has a mass of 350 g. If 14,000 J of energy is added to the rod by heat, what is the change in length of the rod
A movie camera with a (single) lens of focal length 95 mm takes a picture of a person standing 28 m away. what is the height of the image in millimeters on the film
A solid disk rotates in the horizontal plane at an angular velocity of 0.049 rad/s with respect to an axis perpendicular to the disk at its center. what is the angular velocity of the disk
What average force athletes legs apply on a ground
Pressure Variations and Ocean Exploration, How do the pressure variations with depth affect the ability to explore the ocean? How does it affect scuba diving
A fuel pump sends gasoline from a car's fuel tank to the engine at a rate of 6.74x10-2 kg/s. find the speed at which gasoline moves through the fuel line
Two 0.20-H inductors and one 0.44-H inductor are connected in series across the terminals of a 60.0-Hz ac generator. What is the total inductive reactance of this circuit
A rocket is launched from the origin with an acceleration of 20.0 m/s2 at an angle of 30.0 degrees above the horizontal. What is the total time of flight
A 75 kg parachutist descends through a vertical height of 310 m with constant speed. Find the increase in entropy produced by the parachutist, assuming the air temperature is 21°C.
What type of weather front will be responsible for the following weather forecast? "Cool today with rain becoming heavy by this afternoon. Slightly warmer tomorrow. "Winds south easterly becoming westerly to north westerly by the tomorrow morning."
While hauling a log in the back of a flatbed truck, you are pulled over by the state police, The log has a mass of m = 844 kg; the truck has a mass of M = 9750 kg. According to the truck manufacturer, Calculate the minimum coefficient of static frict..
Four point charges, Q1(-15,0,15), Q2(15,0,15), Q3(15,0,-15) and Q4(-15,0,-15) in cartesian coordinates are surrounded with air. If charges Q2 = -Q3 = 2 microCoulomb, Find the forces applied to each point from other charges
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