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A board is 6 meters long. The center of mass is in the 2 meters from the left end. The board has a weight of 320 Newton's. How much force in Newtons is necessary to lift the right end while the other end stays on the ground.
At the bottom of the slope, the path levels out and become horizontal, the snow becomes less icy, and the skier begins to slow down, coming to rest in a distance of 160.00 m along the horizontal path.
Two protons are moving directly toward one another. When they are very far apart, their initial speeds are 2.10 x 105 m/s. What is the distance of closest approach?
A car of mass = 1400 travelling at 60.0 enters a banked turn covered with ice. The road is banked at an angle, and there is no friction between the road and the car's tires. Use = 9.80 throughout this problem.
When a guitar string is sounded along with a 441-Hz tuning fork, a beat frequency of 4.00 Hz is heard. When the same string is sounded along with a 437-Hz tuning fork, beat frequency is 8.00 Hz. What is the frequency of the string.
A swimming pool has dimensions 32 m 9 m and a flat bottom. The pool is filled to a depth of 1.50m with fresh water. What is the force exerted by water on the bottom.
A 4.20 kg model rocket is launched, expelling 57.0 g of burned fuel from its exhaust at a speed of 675 m/s. What is the velocity of the rocket after fuel has burned.
What is the terminal speed for an 84.00 skier going down a 38.0 degree snow-covered slope on wooden skis = 0.06? Assume the skier is 1.70 m tall and 0.500 m wide.
A 280-kg piano slides 4.3 m down a 30o incline and is kept from accelerating by a man who is pushing back on it parallel to the incline. The effective coefficient of kinetic friction is 0.40.
A 1500 kg car traveling at a speed of 20 m/s skids to a halt on wet concrete where kinetic friction= 0.20. How far are the skid marks.
When a single person shouts at a football game, the sound intensity level at the center of the field is 59.9dB. When all the people shout together, the intensity level increases to 111dB.
What will be the equilibrium temperature when a 223 g block of copper at 258 C is placed in the 178 g aluminium calorimeter cup containing 874 g of water at 13.2 C.
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