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The altitude of a hang glider is increasing at a rate of 6.61 m/s. At the same time, the shadow of the glider moves along the ground at a speed of 16.2 m/s when the sun is directly overhead. Compute the magnitude of the glider's velocity.
When at rest, two trains have sirens that emit a frequency of 300 Hz. The trains travel toward one another and toward an observer stationed between them. What is the speed of the second train
A particle of mass "m" moves in a straight line with retardation proportional to its displacement. Find the expression for loss of KE for any displacement "x"
Tarzan, whose mass is 95.0 kilogram, swings from a 3.40 meter vine that is horizontal when he starts. Find the height of the highest tree limb they can reach on their upward swing
You have just landed on a planet. You take out a block of mass 245g , release it from rest from a height of 14.01m, What is the acceleration of gravity on this planet
A 270 mL soda can is 5.27 cm in diameter and has a mass of 23.4 g. Such a soda can half full of water is floating upright in water. What length of the can is above the water level
The angular acceleration of a wheel is α =6t4-4t2 with α in radians/s2 and t in seconds. Write expressions for angular velocity
When a horizontal force of 300 Newton is applied to a 68.0 kilogram box, the box slides on a level floor, Estimate the magnitude of the acceleration of the box
A fish appears to be below the surface of a pond (n=1.33). Calculate what is its actual depth
Positive pressure is used in blood transfusion. Suppose the pressure in a vein is 0.25kPa and the density of blood is 1.04 x 103 kg/m3, how high above the vein must the blood container be placed
The nucleus of a hydrogen atom is a single proton. The radius of a proton is approximately 1 fm. What fraction of a hydrogen atom is occupied by the nucleus
A plumb bob does not hang exactly along a line directed to the center of the Earth's rotation. Find how much does the plumb bob deviate from a radial line at 35.5 degree north latitude
An astronaut on a space walk discovers that his jet pack no longer works, leaving him stranded 40 meter from the spaceship. describe how the astronaut can still use it to return to the ship
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