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What minimum horsepower must a motor have to be able to drag a 350 kilogram block up a 15o ramp at a speed of 1.50 m/s if the coefficient of kinetic friction is 0.25?
A mortar fires a shell of mass (m) at speed (Vo). The shell explodes at the top of its trajectory as designed. However, ratherthan creating a shower of colored flares, it breaks into just twopieces, a smaller piece of mass (1m/5) and a larger piece o..
A cup of water is heated with a heating coil that delivers 117.85 W of heat. In one minute, the temperature of the water rises by 29.47 C. What is the mass in grams of the water
An 8m, 290 N uniform ladders rests against a smooth wall. The coefficient of static friction between the ladder and the ground is 0.75, and the ladder makes a 50° angle with the ground. How far up the ladder can a 720 N person climb before the lad..
A 12.8 g bulletis fired horizontally into a 93 g woodenblock initially at rest on a horizontal surface. what was the speed of the bullet immediately before impact
A rotating wheel requires 6.00 s to rotate 30.0 revolutions, What is the constant angular acceleration (in rad/s) of the wheel
Consider the crates in the figure where m1 = 45 kg and m2 = 12 kg. Assume that there is no friction between m1 and the table, Write Newton's second law for motion along both coordinate directions
Red light of wavelength 633nm from a helium-neon laser passes through a slit 0.370mm wide. What is the width of the central bright fringe
A popcorn kernel initially at rest explodes into two pieces, one piece having twice the mass of the other. What is the ratio of the velocities of the fragments
A propeller is modeled as five identical uniform rods extending radially from its axis. The length and mass of each rod are 0.793 m and 2.97 kg, what is its rotational kinetic energy
Suppose that the coefficient of kinetic friction between Zak's feet and the floor, while wearing socks, is 0.250. what distance will he slide before stopping
You need a transformer to reduce a voltage of 150 V in the primary circuit to 25 V in the secondary circuit. What is the effective resistance of the secondary circuit
What is the repulsive electrical force between two protons 4.0×10?15m apart from each other in an atomic nucleus
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