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A 12-pack of Omni-Cola (mass 4.30 kg) is initially at rest on a horizontal floor. It is then pushed in a straight line for 1.20 m by a trained dog that exerts a horizontal force with magnitude 36.0 N. Use the work-energy' theorem to find the final speed of the 12-pack if
(a) There is no friction between the 12-pack and the floor, and
(b) The coefficient of kinetic friction between the l2-pack and the floor is 0.30.
A 60 kg person jumps from rest off a 5m high tower straight down into the water. find the average force that the water exerts on the diver
A 65 diver stands at the end of a 27 springboard. What is the magnitude of the vertical force exerted by the hinge on the board
A 9.0 kg dog takes a nap in a canoe and wakes up to find the canoe has drifted out onto the lake but now is stationary. What is the mass of the canoe
Biological muscle cells can be thought of as nanomotors that use the chemical energy of ATP to produce mechanical work. How much work is done by such proteins
A rotating fan completes 1200 revolutions every minute. Consider a point on the tip of a blade, at a radius of 0.16 m. Through what distance does the point move in one revolution? What is the speed of the point?
A uniform, solid, right, circular cylinder rolls down an 4.00 m incline without slipping. How fast will the cylinder be rotating at the bottom
During 6 successive intervals a runner moves at the following constant speeds: .326 km/min for 30 seconds, .123 km/min for 23 seconds, Compute the average speed of the runner
Let's say you measure an average acceleration to be 0.4045 ms-2. What is the height (in centimeters) of the riser block
A satellite, mass of satellite=5850 kg, is in circular orbitof 4.1x10^5m above the surface of a planet, which has a radius of4.15x10^6m. calculate the tangential velocity of the satellite
The average force exerted on him by the ground is +18000 N, where the upward direction is taken to be the positive direction. From what height did the student fall? assume that the only force acting during the collision is that due to the ground.
A uniform magnetic field of magnitude 0.80 T is directed perpendicular to the plane of a rectangular loop, calculate the magnetic flux through the loop
A car with a vertical radio antenna 75 cm long drives due east at 30 m/s. Find the induced emf between the ends of the antenna
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