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A student is helping a teacher unload boxes off a truck at a school. A 6.24 kg box is sliding down the ramp at an angle of 36.1°. The ramp exerts a force of kinetic friction of 7.31N on the box. Calculate the acceleration of the box.
When NASA launches a spacecraft to rendezvous with another planet, the planet's motion during the time of travel must be considered. What is the distance between the Earth and Jupiter
A constant force is applied to object A and causes it to accelerate5m/s^2. The same force is applied to object B which accelerates 3m/s^2. The same force is applied to object C andit accelerates 8m/s^2.
A skier starts from rest at the top of a frictionless incline of height 20.0 m, Find the skier's speed at the bottom
explain the shape of the distribution of sample means.
A swimmer maintains a speed of .15 m/s relative to the water when he swims directly toward the opposite shore of the river. The river has a current that flows at .75 m/s. What is his velocity relative to an observer on shore?
A football is kicked at ground level with a speed of 15.0 m/s at an angle of 34.0° to the horizontal. How much later does it hit the ground
A block of mass 20kg is dropped into water. What force should be applied to pull it to the surface if its volume is 0.001m^3? Density of water is 1000.0kg/m^3
A particle lives for a short time before breaking apart into other particles. Assume it is moving at a speed of 0.976c, and an observer who is stationary in a laboratory measures the particle's lifetime to be 5.00 *10-8 s. What is the lifetime accord..
Imagine that plane reaches the necessary takeoff velocity
A heat engine operates as a reversible Carnot cycle transfers 6.0 kW of heat from a reservoir at 1000 K and then rejects it to the atmosphere at 300 K.
An airplane flies eastward and accelerates uniformly. At one position along its path it has a velocity of 26.5 m/s. find the airplane\'s acceleration
A long, narrow, uniform tube of mass M and length l rotates freely about a perpendicular axis through its CM. What will the tube's angular velocity be when this happens
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