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Q1. You push a 2.0 kg block against a horizontal spring, compressing the spring by 15 cm. When you release the block, the spring forces it to slide across a table top. It stops 75 cm from where you released it. The spring constant is 200 N/m. Determine the coefficient of kinetic friction between the block & the table?A. .234B. .052C. .320D. .191Q2. A projectile whose mass is 9.4 kg is fired vertically upward. On its upward flight, an energy of 68 kJ is dissipated because of air drag. How much higher would it have gone if the air drag had been made negligible?A. 1.25 mB. 0.50 mC. 0.74 mD. None of the above
Two charged bodies exert the force of .145N on each other. If they are moved so that they are one fourth as far apart, what force is exerted.
A firefighter at a distance d from a burning building directs a stream of water from a fire hose at angle θi above the horizontal as shown in Figure. If the initial speed of the stream is vi. At what height h does the water strike the building?
A cannonball shot with the initial velocity of 129 m/s at an angle of 36° follows a parabolic path and hits a balloon at the top of its trajectory. Neglect air resistance, how fast is the cannonball going as it hits the balloon.
If you weigh 690 N on the earth, what would be your weight on the surface of a neutron star that has the same mass as our sun and a diameter of 25.0 km.
A car of mass = 1300 travelling at 56.0 enters a banked turn covered with ice. The road is banked at an angle, and there is no friction between the road and car's tires. What is the radius of the turn if = 20.0 (assuming the car continues in uniform ..
What is the coefficient of static between crate and incline
Find the lowest energy of the system (in electron volts) and list the quantum numbers of all occupied states. Find when the current in the solenoid increases to 5.0 A in a period of 0.90 s.
What is the greatest angle of elevation
Consider the conical pendulum with an 80.0 kg bob on a 10.0 m wire making an angle of 5.00 with the vertical as shown. Determine (a) horizontal and vertical components of the force exerted by the wire on the pendulum and (b) radial acceleration of th..
Find out kinetic energy of the merry-go-round
Calculate the shear stress of the crude oil at the walls, and plotting the velocity distribution graph for the same.
How much time passes by they collide
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