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You are playing raquetball at the rec center. When you are 10 m away from the wall you hit a ball 16 m/s towards the wall at an angle of 30 degrees. Ignore any affects due to air resistance.
Part A How long is the ball in the air before it hits the wall? Time =
Part B How high above the launch point does the ball hit the wall? Height =
At this time it has reached a height of 420 metres above launch pad and attained an upward velocity of 50 ms-1. From this time on, the rocket has constant upward acceleration -10 ms-2 (due to the effect of gravity alone).
assume a spherical planet P has a uniform density of 4.72*10^3 kg/m^3 and a radius R=3604 km. For a parcel that weighs 64 N on the surface of the (spherical) earth.
What is the maximum distance we can shoot a dart, from ground level, provided our toy dart gun gives a maximum initial velocity of 2.78 m/s and air resistance is negligible
When a high speed passenger train traveling at 113 km/h rounds a bend, the engineer is shocked to see that a locomotive has improperly entered onto the track from a siding and is a distance D = 642m ahead.
A point charge of -12 micro-coulombs is fired directly towards a single infinite sheet of charge. It is initially moving at 3.4 m/s towards the sheet and after it has traveled 0.7 meters it is moving at 18.4 m/s.
A solid sphere with mass m = 1.5 kg a radius r = 0.20 m rolls without slipping on a flat surface with an angular velocity of ? = 7.2 rad/s. What is the total kinetic energy of the sphere
A thin film of glass (n = 1.48) floats on a liquid of n = 1.35 and is illuminated by light of ? = 600 nm incident from air above it. Find the minimum thickness of the glass
A person weighs 670N steps onto a spring scale in the bathroom, and the spring compresses by 0.79 cm. What is the spring constant? And what is the weight of another person who compresses the spring by 0.34 cm.
A worker on a scaffolding 65 ft above the ground needs to lift a 390 lb bucket of cement from the ground to a point 30 ft above the ground by pulling on the rope weighting 2 lb/ft . Set up the integral of how much work is required (just give the i..
A 4.0-m-wide swimming pool is filled to the top. The bottom of the pool becomes completely shaded in the afternoon, How deep is the pool
Two long straight parallel wires are 12cm apart. Wire A carries 1.5A current. Wire B's current is 4.0A in the same direction, Determine the magnetic field due to wire B at the position of wire A
Presume that you loft the ball with the initial speed of v = 17.6m/s, at an angle of θ = 50.7° above the horizontal. At this instant your opponent is d = 11.19m away from the ball. He begins moving away from you 0.35s later, hoping to reach the ba..
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