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A horizontal force of 80 N acts on a mass of 6 kg resting on a horizontal surface. The mass is initially at rest and covers a distance of 5 m in 0.92 s under the action of the force. Assuming there are no energy losses due to air resistance and therefore that the acceleration is constant: Calculate the total energy expended in the acceleration. Plot a graph of the Kinetic energy of the mass against time Plot a graph of the kinetic energy of the mass against distance Calculate the coefficient of friction between the mass and the surface.
What is the shortest height a plane mirror must be so that a person who is 1.6 meters tall is able to see his or her whole body? plan a ray diagram to support your answer.
The energy of a simple harmonic oscillator could be doubled by increasing the amplitude by a factor of approximately
The manufacturers of a particular brand of car conduct head-on collision tests and find that in the absence of a passenger side air bag, What is the average force exerted on the childs head during collision
A car travels for 33.1 km south, then west for 9.4 km, and, finally, 7.5 km in a direction 73.5 deg; east of north. Find the magnitude (in m) of the car's total displacement
A block slides down a frictionless plane having an inclination of θ = 19.1 °. Find its speed when it reaches the bottom of the incline
The fresh water behind a reservoir dam is 15.0 m deep. A horizontal pipe 3.00 cm in diameter passes through the dam 8.0 m below the water surface, What volume of water flows out of the pipe
Small spheres of diameter 1.03 mm fall through 20°C water with a terminal speed of 1.00 cm/s. Calculate the density of the spheres
Communication satellites are placed in geosynchronous orbit, i.e., in circular orbit such that they complete one full revolution about the earth in one sidereal day.
Put A 220 lb man presses the brakes with a force of 28 lbs/in2 to stop his car while traveling at a speed of 48 mi/hr. find the amount of deceleration experienced by him
The spring constant of a spring is 1260 N/m. A body is suspended from the spring, causing it to stretch 7.0 cm. What is the mass of the body
What is least amount of work required by an external force
A movig particle encounters an external electric field that decreases its kinetic energy from 9740 eV to 5690 eV as the particle moves from position A to position B. Determine the charge of the particle
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