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A man leaves the garrage in his house and drives to a neighbouring town which is twenty kilometres away from his house on sight-seeing. He returns home to his garrage two hours after. What is his average velocity from home in km/h?
A string of mass 2 g and length of 1.0 m has a tension of 15 Npulling it. What is the speed of a wave for this setup
A Styrofoam slab has thickness h and densityρs. When a swimmer of mass m isresting on it, Find the area of the slab
An 80-W, 120-V bulb is connected in parallel with a 25-W, 120-V bulb. What is the net resistance
you drop a stone into a deep well and hear it hit the bottom 1.60 s later. this is the time it takes for the stone to
Red light of wavelength 665.9 nanometer produces photoelectrons from a certain material. Evaluate what is the material work function
A mountain climber, in the process of crossing between two cliffs by a rope, pauses to rest. She weighs 586 N. As the drawingshows, she is closer to the left cliff than to the right cliff,with the result that the tensions in the left and right sid..
A torque of 12 N.m is applied to a solid uniform disk of radius 0.50 m. If the disk accelerates at 5.7 rad/s^2 what is the mass of the disk
A certain automobile engine delivers 2.24 104 W (30.0 hp) to its wheels when moving at a constant speed of 21.0 m/s ( 47 mi/h). What is the resistive force acting on the automobile at that speed?
How much time elapses from when the ball leaves the pitchers hand until the ball reaches the batter
A boy in a wheelchair (total mass 45 kilogram) has speed 1.40 meter per second at the crest of a slope 2.20 meter high and 12.4 meter long. Obtain the work he did in pushing forward on his wheels during the downhill ride
A rear wheel on a Formula 1 racing car has a mass of 3.2 kg and a radius of 0.42m. A mechanic is rolling the wheel towards a step at the back of the workshop. Decide: The minimum horizontal force (F) needed to be applied through the axle (center) of ..
Object Q stands on the central axis of a spherical mirror. For p= +15, concave mirror, and 10 centimeter between the focal point and the mirror. Determine the lateral magnification
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