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An S wave crosses the boundary between two different types of rock. The angle of incidence is 22° and the angle of refraction is 34°. If the speed of the S wave before the boundary is 3.2 m/s, what is the speed past the boundary?
Two astronauts of equal mass 76 kg are holding on to opposite ends of a straight rope in space. The length of the rope between them is 18meters. What is the new angular velocity of the two astronauts
A uniform horizontal beam has a mass of 241 kg and is 10.5 meters long. The beam also carries the following three loads: Load A: 4715 N, 1.26 meters from left end, What are the forces supporting the two ends of the beam
A rotating wheel requires2.90s to rotate through 37.0 revolutions. What is the constant angular acceleration of the wheel
you are helping a friend you estimate it takes a force of 1665.5N to draw everything across the level grass at a constant speed. what is the coefficient of friction between the wood board and grass
compute the total energy radiated by the Sun each second.
The liquid level system shown in the below figure is initially at the steady state with the inlet flow rate at 1 cfm. Calculate the maximum & minimum values of the output.
q1. a cannonball launched with an initial velocity of 161 ms at the angle of 45 degrees follows a parabolic path and
A projectile is fired at v0 = 394.0 m/s at an angle of θ = 64.2o with respect to the horizontal, How far will the projectile travel in the horizontal direction, R
You and a friend each drive 67 km. You travel at 88.1 km/h, your friend at 952.6 km/h. How long would your friend wait for you at the end of the trip.
A long cylindrical insulating shell has an inner radius of a = 1.42 m and an outer radius of b = 1.62 m, What is the magnitude of the electric field at a distance of r= 0.59 m from the axis
In a tennis serve, a 0.073-kg ball can be accelerated from rest to 41 m/s over a distance of 0.95 m. Find the magnitude of the average force exerted by the racket
A typical flashlight battery will produce a 0.50-A current for about 3 h before losing its charge. Determine the total number of electrons
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