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A train travels due south at 30 m/s (relative to the ground) in a rain that is blown toward the south by the wind. The path of each raindrop makes an angle of 70° with the vertical, as measured by an observer stationary on the ground. An observer on the train, however, sees the drops fall perfectly vertically. Determine the speed of the raindrops relative to the ground.
q1. a weight of 1200 n rests on a lever at a point 0.50 m from a support. on the same side of the support at a distance
In a nuclear power plant the fuel rods last 3 yr before they are replaced. If a plant with rated thermal power 1.00 GW operates at 86.0% capacity for the 3 yr, what is the loss of mass of the fuel
An archer shoots an arrow with a velocity of 45m/s at an angle of 50 degrees with the horizontal. An assistant standing on the level ground 150 m downrange from the launch point throws an apple straight up with the least initial speed required to ..
If the surface of the water is calm and the pool is h = 1.52 m deep, find out the minimum diameter of the raft that would prevent the diamond from being seen.
a gas mixture contains 1.29 g n2 and 0.93 g o2 in a 1.49- l container at 23?.1. calculate the mole fraction of n2.2.
What is the highest speed with which a 1550 car can round a turn of radius 76 on a flat road if the coefficient of static friction between tires and road is 0.50.
A 2.40 kg ball is attached to an unknown spring and allowed to oscillate. When does the maximum of acceleration occur
a series combination of four identical resistors is across a battery. the potential difference across each resistor is
A crate of mass 14.0 kg is pulled up a rough incline with an initial speed of 1.50 m/s. How much mechanical energy is lost due to friction
A basketball player grabbing a rebound jumps 73.3 cm vertically. How much total time (ascent and descent) does the player spend (a) in the top 13.1 cm of this jump and (b) in the bottom 13.1 cm? Do your results explain why such players seem to han..
two 80.0 kg astronauts are floating in outer space. if they are 10.0 m apart, what is the gravitational attraction between them
Two parellel plates of area 100 cm^2 are given charges ofequal magnitudes 8.9 X 10^ -7 C but opposite signs. Calculate the dielectric constant of the material
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