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A box weighing 52 Newton slide across the floor, the floor exerts a friction force of 17 Newton on the box. Find coefficient of kinetic friction between floor and box?
soap bubbles can display impressive colors which are the result of the enhanced reflection of light of particular
A man with mass m1 = 66.0 kg stands at the left end of a uniform boat with mass m2 = 177.0 kg and a length L = 3.5 m. What is the location of the center of mass of the system
A blackened, solid copper sphere that has a radius equal to 2.5 cm hangs in an evacuated enclosure whose walls have a temperature of 29°C. find the initial rate at which its temperature changes
The tractor beam exerts a constant force of 4.0 104 N on the shuttlecraft. Both spacecraft are initially at rest. Explain how far does the starship move as it pulls the shuttlecraft aboard?
A simple pendulum is made from a string that is 0.65m in length with a mass of 0.2kg attached to the free end. The mass is pulled to one side during a small angle and released from rest.
If a current of 8.3 A is drawn from the battery when a resistor R is connected across the terminals ab of the battery, what is the power dissipated by the resistor R
A dead battery is charged by connecting it to the live battery of another car with jumper cables. Determine the current in the dead battery
A perfectly inelastic collision (both cars stick together after the collision) occurs between a 2000kg car moving at 7m/s, What is the velocity of the cars immediately after impact
a slow proton beam fills the space between two large parallel metal plates. the distance between the plates is 2a. one
A diver running 2.5 m/s dives out horizontally from the edge of a vertical cliff and 2.3 second later reaches the water below. Compute how far from its base did the diver hit the water
A telephoto lens with focal length of 123 mm has f-numbers ranging from f/2.8 to f/22. What is the diameter of the lens aperture at the second f-number
a proton is released from rest at the positive plate of a parallel plate capacitor. it crosses the capacitor and
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