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A lawn mower of 25kg is pushed a horizontal distance of 10 m by 50N downward force directed 60 degrees to the horizontal. The coefficient of kinetic frictional force is 0.017. What is the work done by each force on the lawn mower? What is the net work on the lawn mower?
Two different wavelengths of monochromatic light are projected through the same double slit. First a 490 nm light is projected, calculate the unknown wavelength
An emf source with emf = 120 V, a resistor with R = 84.0 ?, and a capacitor with C = 3.50 µF are connected in series. find the magnitude of the charge on each plate of the capacitor
assess your local environment either in your home town or region. describe the type of common chemical hazards that
a 2.0kg ball traveling at 2.0m/s collides head on with a 1kg ball intially at rest. Fraction of initial kinetic energy lost during the collision
A person who weighs 635 N is riding a 98 N mountain bike. Suppose the entire weight of the rider and bike is supported equally by the two tires. If the gauge pressure in each tire is 7.25 105 Pa, what is the area of contact between each tire and the ..
A farsighted person has a near point of 50-cm from her eyes. She wants glasses that would let her see objects at a distance of only 25.00 cm from her eyes. Determine out the focal length of the glasses needed if the glasses are 2 cm and 3 cm from ..
On Apollo Moon missions, the lunar module would blast off from the Moon's surface and dock with the command module in lunar orbit. Find the impact speed of the lunar module
In a mall, a shopper rides up an escalator between floors. At the top of the escalator, the shopper turns right and walks 10.1 m to a store. At what angle is the escalator inclined above the horizontal
A child's toy consists of a m = 26 g monkey suspended from a spring of negligible mass and spring constant k. calculate the speed of the monkey in Ve m/s as it passes through equilibrium
A light beam is incident on a piece of zircon (n = 1.923) at the Brewster's angle. determine the value of Brewster's angle
A point charge of +6.3? C is located 0.31 m from a second point charge of -4.8? C. What is the absolute magnitude of the force on each charge?
A sample containing beryllium (atomic mass 9 u), aluminum (27 u), and an unknown element is placed in a mass spectrometer, What is the mass of the unknown element
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