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A 5.0-kg object is pulled along a horizontal surface at by a 15 N force acting 20? above the horizontal.
(a) How much work is done by this force as the object moves 6.0 m?
(b) If the frictional coefficient between the object and the surface is 0.2 how much of the work is "lost" to friction during these 6.0 m.
(c) What is the velocity of the object after 6.0 m if the object starts at rest?
(d) How much work is done by the gravitational force?
(e) How much work is done by the normal force?
A 250 kg weather rocket is loaded with 100kg of fuel and fired straight up. It accelerates upward at 32m/s2 for 34 s, then runs out of fuel. overlook any air resistance effects.
A rope with 270g of mass per meter is under 600N tension. A wave with frequency 4.0Hz and amplitude 6.1cm is propagating on the rope. What is the average power carried by the wave?
A gas is contained in a cubic box whose sides are 3m long. If the gas is initially at 80 K, and it is heated up to 320 K at constant volume, What is the final pressure
A nurse measures the temperature of a patient to be 39.3°C. What is this temperature on the Fahrenheit scale
A 0.540-kg object attached to a spring with a force constant of 8.00 N/m vibrates in simple harmonic motion with an amplitude of 10.8 cm. Calculate the maximum value of its acceleration
A spherical virus has a diameter of 50 nm. It is contained in a long, narrow cell of length 1 x 10-4 m. What uncertainty does this imply for the velocity of the virus along the length of the cell? Assume that the virus has a density equal to that of ..
The density of a 2.39-m long rod can be described by the linear density function ?(x) = 107 g/m + 11.9x g/m2, Determine the total mass of the rod
An observer, whose eyes are 1.96 m above the ground, is standing 32.0 m away from a tree. How tall is the tree
Use the table shown below to determine the energy in eV of the photon emitted when an electron jumps down
The force required to stretch a Hooke's-law spring varies from 0 N to 76.4 N as we stretch the spring by moving one end 14.6 cm from its unstressed position. Find the work done in stretching the spring
Parametric study on the effects of activated carbon by calcium chloride activation from bark of calamansi tree on sewage wastewater treatment.
A slit of width 0.24mm is illuminated with monochromatic light of wavelength 550nm , and a diffraction pattern is formed on a screen 1.4m from the slit. What is the width of the central maximum
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