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A projectile is launched from ground level to the top of a cliff which is 195m away and 155 m high
If the projectile lands on top of the cliff 8.9s after it is fired, find the initial velocity of the projectile (magnitude and direction). Neglect air resistance.
A 21 kg sled is being pulled across a horizontal surface at a constant velocity. The pulling force has a magnitude of 80.5 N and is directed at an angle of 30° above the horizontal. Determine the coefficient of kinetic friction.
an 18-kg groceryi cart is pushed at constant speed along an aisle by a force of 12N. Find the work done by each of the forces on the cart
the 150 turn primary coil of a transformer is connected to a 120 V AC source. Find the current in the primary coil
A soldier has a huge contraption that notches a large 4 kg arrow (it looks more like a lance) in a massive bow and uses a winch system to draw the arrow back to set the bow. What is the speed of the arrow
A fireman, 25.6 m away from a burning building, directs a stream of water from a ground level fire hose at an angle of 39.5° above the horizontal
A block of mass 8.4 kg is pulled along a horizontal frictionless floor by a cord, What is the magnitude of the normal force exerted on the mass by the floor
The 2.0 cm diameter coil shown below has 25 turns and has a current flowing through it of 5.00 A. What is the average change in flux (25 turns) going from 30 to 90 degrees
A 240 kV power transmission line carrying 500 A is hung from grounded metal towers by ceramic insulators, each having a 1.20, Calculate the power dissipated by 100 of them.
A machine part rotates at an angular speed of 0.40 rad/s; its speed is then increased to 2.0 rad/s at an angular acceleration of 0.76 rad/s2
Consider an angular motion. If the displacement is given as 250teθ, and the radius r is constant, derive the expressions for the angular velocity θ=ω, angular accelerationα, linear displacements, linear velocitytv, normal accelerationna, and tange..
A 685 kg car stopped at an intersection is rear-ended by a 1470 kg truck moving with a speed of 12.5 m/s. find the final speed of both vehicles after the collision
Two loudspeakers in a plane, 5 m apart, are playing the same frequency. If you stand 12 m in front of the plane of the speakers, What is the frequency of the sound
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