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In a friction experiment, your wooden plank is horizontal. When a mass of 100 grams is hanging on the weight hanger of mass 50 grams, a slight push makes the block move at a constant speed along the plank. If the mass of a wooden block is 500 grams, what is the coefficient of kinetic friction?
A 2.90 m long, 320 kg steel beam extends horizontally from the point where it has been bolted to the framework of the new building under construction. A 66 kg construction worker stands at the far end of the beam.
The coefficient of kinetic friction is 0.350. Illustrate what should be the magnitude of P, so that the net work done by it and the kinetic frictional force is zero?
The wing of an airplane has an average cross-sectional area of 13 m2 and experiences a lift force of 84,000 N. What is the average difference in the air pressure
a 200kg ball is shot from a 2200kg cannon horizontally and positivly at 200m/s. what is the cannons speed, in respect of Earth
A submarine dives 90.0 m at an angle of 8.0° below the horizontal. What are the horizontal and vertical components of submarine's displacement? (Imagine that upward and the direction of the submarine's horizontal motion is positive.)
A cannon fires up at an angle of 30 degrees above the horzontal with a muzzle velocity of 40 m/s. How far from the base of the wall dos the cannon ball travel
A flight attendant pulls her 61N flight bag a distance of 279m along a level airport floor at a constant velocity. The force she exerts is 41N at the angle of 50° above the horizontal.
Condensation occurs on a bathroom window at a rate of 0.5 kg per hour. If the bathroom air is at 26°C and fully saturated with water vapour, compute approximately, the rate of heat transfer onto the window surface if the inside surface is maintain..
For the situation, the magnetic field changes with time according to the expression B = (2.00t3 - 4.00t2 + 0.800)T, and r2 = 2R = 5.00 cm. (a) Calculate the magnitude and direction of the force exerted on an electron located at point P2 when t = 2.00..
An RL series circuit has R = 80.0? and L = 1.95mH . The series combination is connected across a 165V (rms), 63Hz power supply. Find the peak current
A recording engineer works in a soundproofed room that is 45 dB quieter than the outside. If the sound intensity in the room is 1.30 x10-10 W/m2, what is the intensity outside.
Two equally charged insulating balls each weigh 0.50 g and hang from a common point by identical threads 30 cm long, What is the magnitude of the charge on each ball
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