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A rock is launched with an initial velocity of 42 m/s at an angle of 67 degrees above the horizontal. What is the horizontal component of its velocity?
question1a person lifts a 3.60 kg textbook with a 52.0 n force at a 60 degree angle from the horizontal. sketch a
A 1.6 kg block on a horizontal frictionless surface is attached to an ideal mass less spring whose spring constant is 190 N/m. What is the velocity of the block at time t=.40 s
A girl throws a 0.2 kg ball a distance of 6m straight up in the air (assume no air resistance). What is the kinetic energy of the ball as it leaves the girls hand
A 19.8 kg block is dragged over a rough, hor- izontal surface by a constant force of 180 N acting at an angle of angle 32.8? above the horizontal. Find the work done by the normal force
A bacterium using its flagellum as propulsion can move through liquids at a rate of 0.003 m/s. What amount of force must the flagellum generate to propel
A lawnmower engine with an efficiency of 0.17 rejects 5400 J of heat every sec. Find the magnitude of the work that the engine does in 1 second
A flywheel has a constant angular deceleration of -2.36 rad/s2. Find the time required for the flywheel to come to rest
What is the magnitude of the electric force between a proton and an electron when they are at a distance of 1.91 angstrom from each other
A 1.50-m-diameter MRI solenoid with a length of 2.10m has a magnetic field of 1.50T along its axis. If the current is turned off in a time of 1.2 s, what is the emf in one turn of the solenoid's windings
If a Saturn V rocket with an Apollo spacecraft attached has a combined mass of 2.4 multiplied by 105 kg and reached a speed of 11.2 km/s, how much kinetic energy would it then have?
In a football game, a receiver is standing still, having just caught a pass. Before he can move, a tackler, running at a velocity of +4.8 m/s, grabs him. find the mass of the receiver
A ball has a density of 900 kg/m3 and it's volume is0.03m3. To submerge in water the ball must be held downby the force. What is the force required to keep the ball submerged?
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