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A dockworker loading crates on a ship finds that a 22 kg crate, initially at rest on a horizontal surface, requires a 73.2 N horizontal force to set it in motion. However, after the crate is set in motion, a horizontal force of 52 N is required to keep it moving with a constant speed. Find the coefficient of static and kinetic friction between the crate and the floor. The acceleration of gravity is 9.8 m/s^2. Please show work.
A small wooden block with mass 0.875kg is suspended from the lower end of a light cord that is 1.80m long. What was the initial speed v0 of the bullet
A line of negative charge lies along the x-axis from -3.40 cm to +5.30 cm. Calculate the net electric flux through the Gaussian surface
A cylinder contains a piston on each side of which is one kilomole of an ideal gas. The walls of the cylinder are diathermal, What is the change in the Helmholtz potential
A 2.00 kg mass is connected to a spring with a spring constant of 6.00 N/m. What is the maximum velocity the simple harmonic motion
If the bullet buries itself in the block, find out how far along the ground that the block lands from the base of the table.
Jupiter makes one complete orbit of the Sun every 11.9 years. Calculate the radius of the orbit of Jupiter
the volume of a rectangular prism is given by the formula v lwh. what are the general dimensions of the prism if the
In an experiment, light of wavelength 600 nm falls on two slits which are spaced at a distance of .5 mm. What is the distance of the slit to the screen
A Carnot engine whose high-temperature reservoir is at 680{\rm K} takes in 530{\rm J} of heat at this temperature in each cycle, What is the temperature of the low-temperature reservoir
The pressure of a monatomic ideal gas () increases by a factor of 2.15 during an adiabatic compression. What is the ratio of the final volume to the initial volume
Potassium chloride is a crystal with lattice spacing of 0.314nm. The first peak for the bragg diffraction is observed to be at 15.0 degree. What energy x-rays were used in this diffraction measurement? What other order peaks can be observe (i.e ha..
Two cylindrical bars, each with diameter of 2.40 cm, are welded together end-to-end. One of the original bars is copper and is 0.350 m long. The other bar is gold and is 0.135 m long. What is the resistance between the ends of the welded bar at 20 oC..
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