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A fish appears to be below the surface of a pond (n=1.33). Calculate what is its actual depth? (Hint: use the paraxial approximation)
Blocks A (mass 4.50 ) and B (mass 13.00 ) move on a frictionless, horizontal surface. Initially, block B is at rest and block A is moving toward it at 7.00. Find the velocity of each block after they have moved apart
A boat with a horizontal tow rope pulls a water skier. how much work does the rope do on the skier during a forward displacement of 270m
A spacecraft receding from he earth at 0.97c transmits data at the rate of 1*104pulses/s. At what rate are they received.
A 5.4ft -ft-tall girl stands on level ground. The sun is 30? above the horizon. How long is her shadow
a 1.5 kilogram block is at rest on a ramp of height h. when the block is released it slides without friction to the
A 10000 kg train car A traveling at a speed of 24 m/s strikes an identical car B initially at rest. calculate the amount of the initial kinetic energy is transformed into thermal or other forms of energy
Estimate the minimum accelerating voltage required for an X-ray tube with a Fe26 anode to produce a Ka line
A bicyclist coasts down a 5.39° slope at a steady speed of 8.37 m/s. Assuming a total mass of 87.1 kg (bicycle plus rider), what must the cyclist's power output be to pedal up the same slope at the same speed
while you take a bath, how many kilograms of hot water (50°C) have to you mix with cold water (11 °C) so that the temperature of the bath is 36 °C? The total mass of water (hot plus cold) is 194 kg. Ignore any heat flow between the water and its e..
Although the evidence is weak, there has been concern in recent years over possible health effects from the magnetic fields generated by transmission lines. Estimate the magnetic field strength on the ground underneath such a line
What is the maximum speed with which a 1200- car can round a turn of radius 71 on a flat road if coefficient of static friction between tires and road is 0.45.
In a period of 1.4 s, 5.0 1023 nitrogen molecules strike a wall of area 8.9 cm2. find the pressure exerted on the wall
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