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A block M1 of mass 12.7 kg sits on top of a larger block M2 of mass 18.7 kg which sits on a flat surface. The kinetic friction coefficient between the upper and lower block is 0.652. The kinetic friction coefficient between the lower block and the flat surface is 0.131. A horizontal force $F$ = 149.4 N pushes against the upper block, causing it to slide. The friction force between the blocks then causes the lower block to slide also. Find the magnitude of the acceleration of the upper block.
If a car traveling at 66 km/h will skid 22 m when its brakes lock, how far would it skid if it is traveling at 120 km/h when its brakes lock.
A laser pulse has an energy of 16 J and a beam radius of 2 mm. The pulse duration is 13 ns and the energy density is constant within the pulse. What is the total energy density within the pulse
A banked circular highway curve is designed for traffic moving at 85 km/h. The radius of the curve is 158 m. Traffic is moving along highway at 48 km/h on the rainy day. What is the minimum coefficient of friction between tires and road that would al..
Two identical point charges (q = +1.50 x 10-6 C) are fixed at opposite corners of a square whose sides have a length of 0.570 m. Determine the speed of the test charge when it reaches the center of the square
A biology student uses a simple magnifier to examine the structural features of an insect's wing. The wing is held 3.60 cm in front of the lens, What angular magnification is achieved
multiple-Concept Example 11 deals with a situation that is similar, but not identical, to that here. When 4710 J of heat are added to a 0.261-m-long silver bar, What is the mass of the bar
Place the light source with the object at 0 cm on the optical rail. Where is the position of the image?
What's the magnitude of the electric field at an on-axis point a distance of .7m from a ring of charge with a total charge of .8microC
A car moving with an initial speed v collides with a second lighter stationary car that is 49.6% as massive. Calculate the final speed of the two cars after the collision
If the operators of a spy satellite pondered using it to photograph license plate numbers. hat is the smallest distance between two points that it can resolve
A 42kg child decides to make a raft out of empty 1.0 L soda bottles and duct tape. what is the minimum number of bottles needed in order to keep the child dry
A swimmer bounces straight up from a diving board and falls feet first into a pool. She starts with a velocity of 3.00 m/s, and her takeoff point is 1.20 m above the pool. How long are her feet in the air
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