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A gardener pushes a 20kg lawnmower whose handle is tilted up 37degrees above horizontal. The lawnmower's coefficient of rolling friction is 0.20. How much power does the gardener have to supply to push the lawnmower at a constant speed of 1.4m/s ? Assume his push is parallel to the handle.
Coherent light from a sodium-vapor lamp is passed through a filter that blocks everything except for light of a single wavelength. What is the wavelength of the light that falls on the slits
Use the worked example above to help you solve this problem. A skier starts from rest at the top of a frictionless incline of height 20.0 m, Find the skier's speed at the bottom
(a) Find the electric force on the proton. magnitude N direction (b) Find the acceleration of the proton. magnitude m/s2 direction (c) Find the distance it travels in 2.18 µs. i only need help with c please. I have rechecked my calculations and am..
A car travels at a constant speed around the circular track or a radius of 2.6 km. it goes around the track once in 360 seconds.
The balance wheel of a watch oscillates with an angular amplitude of n-rad and a period of 0.10 s. Find the maximum angular speed of the wheel
The suspension system of your 1200 kg car has a natural oscillation frequency of 2:00 Hz without functioning shock absorbers, At what speed are you driving
Consider a person on the moon who launches herself into a satnding broad jump at 45 degrees. What is the range of the jump
a soil below the water table has a density of 120 lb/ft^3 and a void ratio of .82. determine the specific gravity of solids
Consider an equilateral triangle 12cm on a side. If a charge of 6*10^-5 C is placed at each vertex, find the force on the top charge.
The radius of the aorta is about 1.4cm , and the blood passing through it has a speed of about 40cm/s. Calculate the average speed of blood flow in the major arteries of the body
Calculate the maximum value of resistance that can be obtained by combining resistors of 31 , 47 , and 64
The Earth's nearly circular orbit around the sun has a diameter of 300 million km. Assuming it takes 365 days for the Earth to make one complete trip around the sun, find the acceleration of the Earth toward the sun.
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