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Skydiver jumps out of the helicopter and falls freely for three seconds before opening a pair shoe what is the skydivers downward velocity when the parachute opens and how far below the helicopter is the skydiver when parachute opens.
a 30 kg block on a frictionless surface experiences two perpendicular forces in the x and y directions. if the force in
Standing waves on a wire are explained by y(x,t)=(ASWsinkx) sin ?t, with ASW = 3.00mm , ? = 975rad/s, and k = 0.790rad/m. The left end of the wire is at x = 0.
the space shuttle is in a 230 mile high orbit. what are the shuttles orbital period in minutes and its speed.
On October 15, 2001, a planet was discovered orbiting around the star HD68988. What is the mass of HD68988
A 2 kg mass is attached to a rope that that is swung in a horizontal circle with a circumference of 3 meters. What must be the tension in the rope so that the ball just misses the top of the 3 meter wall?
Two boats start together and race across a 62-km-wide lake and back. Boat A goes across at 62 km/h and returns at 62 km/h. Boat B goes across at 31 km/h, and its crew, realizing how far behind it is getting, returns at 93 km/h.
q1. on an open field a cannonball launches at the angle of 50deg with respect to the ground. some moment later you
In 1994, Mata Jagdamba of India had very long hair. It was 4.23 m long. Suppose Mata conducted experiments with her hair. how large was the mass
A 5.0-rn-diameter garden pond is 0.300m deep. Solar energy is incident on the pond at an average rate of 400 W/m2. If the water absorbs all the solar energy and does not exchange energy with its surroundings, how many hours will it take to warm from ..
A photon of wavelength 4.220×10?2nm strikes a free electron and is scattered at an angle of 38.0?from its original direction
A 27.0-kg child on a 1.00-m-long swing is released from rest when the ropes of the swing make an angle of 25.0° with the vertical. (a) Neglecting friction, find the child's speed at the lowest position. m/s (b) If the actual speed of the child at the..
A dolphin swims near the sea surface 350 meter west, then 200 meter northwest, and then dives below the surface and swims an additional distance in an unknown direction. Determine the dolphin displacement during the dive
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