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1) A 4.0 kg object moving with unknown velocity collides with a 6.0 kg stationary object. After the collision, the 4.0 kg object travels with a velocity of 2.8 m/s 30.0° N of W and the 6.0 kg object travels with a velocity of 1.6 m/s 60.0° S of W. What was the velocity of the 4.0 kg object before the collision? Was the collision elastic or inelastic?
2) A 3000 kg space capsule is travelling in outer space with a speed of 200 m/s. In an effort to alter its course, the space capsule fires a 25.0 kg projectile perpendicular to its original direction of motion at a speed of 2000 m/s. What is the new velocity of the space capsule?
Water flows straight down from an open faucet. The cross-sectional area of the faucet is 1.60 10-4 m2, obtain the cross sectional area of the water stream
Space debris left from old satellites and their launchers is becoming a hazard to other satellites. How much energy in joules is generated by the collision
An insulated Thermos contains 123 cm3 of hot coffee at 73 °C. You put a 12.0 g ice cube at its melting point to cool coffee. By how various degrees has your coffee cooled one time the ice has melted and equilibrium is reached? Treat the coffee as tho..
A particle is moving uniformly from the point (13, 12, 9) along a line; its velocity vector is . Upon reaching the xy plane, the particle is reflected off the plane. At what point will it hit the xz plane?
while the airport sends out a rescue crew, how far will the crew have to fly to reach the aircraft if they fly in a straight line from Galisto?
question1a fishing pole is 2.00 m long and inclined above horizontal at the angle of 20.0deg. a fish is pulling on it
A small button placed on a horizontal rotating platform with diameter 0.305 m will revolve with the platform when it is brought up to a speed of 24.0 rev/min, How far from the axis can the button be placed
A piston-cylinder device is initially filled with 100 kg of R-134a at 200 kPa with a volume of 12.3 m3. The system is then cooled
According to the Bohr model, a hydrogen atom in its lowest energy state has a nucleus consisting of a single proton, What is the magnitude of the "current" flowing around the nucleus
An electron is released from rest at the negative plate of a parallel plate capacitor. The charge per unit area on each plate is ? = 1.90 10-7 C/m2, and the plates are separated by a distance of 1.5 10-2 m. How fast is the electron moving just bef..
A car drives horizontally off a 86m -high cliff at a speed of 29m/s . Ignore air resistance. How long will it take the car to hit the ground
A dart is thrown at a dartboard 2.37 m away. When the dart is released at the same height as the center of the dartboard, At what angle relative to the floor was the dart thrown
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