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After sliding down a snow-covered hill on an inner tube, Ashley is coasting across a level snowfield at a constant velocity of +2.4 m/s. Miranda runs after her at a velocity of +4.4 m/s and hops on the inner tube. How fast do the two of them slide across the snow together on the inner tube? Ashley's mass is 74 kg and Miranda's is 57 kg. Ignore the mass of the inner tube and any friction between the inner tube and the snow.
This time, William Tell is shooting at an apple that hangs on a tree . The apple is a horizontal distance of 20.0m away and at a height of 4.00m above the ground, what is the arrow's initial velocity
q1. a stone is dropped into a deep canyon and is heard to strike the base 6.8 s after release. how deep is the canyon?
Two radio antennas are separated by 1.20m. Both broadcast identical 750 MHz waves. If you walk around the antennas in a circle of radius 20m, how many maxima will you detect.
A 20,000-kg railroad car travels down the track at 30 m/sec and hits a second stationary railroad car of 10,000 kg. Calculate the final velocity of the cars
A beaker is filled to the brim with water. A solid object of mass 3.00 kg is lowered into the beaker so the object is fully submerged in the water, find the buoyant force that acts on the submerged object
The drawing shows two situations in which charges are placed on the x and y axes. find the magnitude of the net electric field at the origin
A bullet with mass m = 5.21 g is moving horizontally with a speed v = 373 m/s when it strikes a block of hardened steel with mass M = 14.8 kg, What was the change in kinetic energy (J) of the bullet
Suppose that the terminal speed of a particular sky diver is 165 km/h in the spread-eagle position and 305 km/h in the nosedive position. Assuming that the diver's drag coefficient C does not change from one position to the other, find the ratio of t..
A thin film of MgF2 (n=1.38) coats a piece of glass. Constructive interference is observed for the reflection of light with wavelengths of 500nm and 625nm.
In a new (inelastic) collision, the same two bumper cars with the same initial velocities now latch together as they collide. What is the final speed of the two bumper cars after the collision
What should the charge (sign and magnitude) of a particle of mass 1.47 be for it to remain stationary when placed in a downward-directed electric field of magnitude 610.
A 1.1 kg block of ice is initially at a temperature of -5°C. If 4.8 ? 105 J of heat are added to the ice, what is the final temperature of the resulting liquid water
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