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A uniform 7.6 ladder is leaning against a frictionless vertical wall, with which it makes a 15 angle. The coefficient of friction between ladder and ground is 0.26. If so, how massive a person would make the ladder slip?
A diamond has a mass of 56.6 g and the gold ring it is set in has a mass of 125.6 g. How many carbon atoms are there compared to gold atoms
At the moment of release, two planes have the same speed of 152 m/s, and each is carrying a tank at the same height of 2.05 km above the ground. find direction of the velocity with which the fuel tank hits the ground if it is from plane A
On an icy road, a 1200 kg car moving at 55 km/h strikes a 430 kg truck moving in the same direction at 43 km/h. Find the speed of the wreckage
A tank of 0.5 m3 volume contains compressed air. A valve is opened and air escapes with a velocity of 220 m/s through an opening of 100 mm2 area. Find the rate of change of density of the air in the tank at this moment
An alpha particle (the nucleus of a helium atom) consists of two protons and two neutrons. what is the strength of the magnetic field
You throw a 176 g ball straight up to a height of 37.0 m. Calculate the average force exerted by your hand while you are throwing it
Use Ohm's law to calculate the current in a heater with a heating element of 20 ohms when connected to a 110-V outlet
A 5.10 kg object on a horizontal frictionless surface is attatched to a spring with spring constant 880 N/m. The object is displaced from equilibrium 50.0 cm horizontally and given an initial velocity of 8.9 m/s back toward the equilibrium point.
When they release their arms, Al moves off in one direction at a speed of 0.689 m/s, while Jo moves off in the opposite direction at a speed of 1.10 m/s. Assuming that friction is negligible, find out Al's mas
The distance between the eyepiece and the objective lens in a certain compound microscope is 12.7 cm. The focal length of the objective is 0.540 cm, determine the overall magnification of the microscope
A pair of hedge trimmers are 45 cm long from the pivot to the end of the handles. If the person applies of a force of 15 N on each handle, how much force is applied to the branch
A person with mass of 70kg is climbing a ladder with a length of 6 m and the ladder has a mass of 20kg that leans against a smooth, What is the magnitude of the frictional force of the floor
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