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A swimmer bounces straight up from a diving board and falls feet first into a pool. She starts with a velocity of 3.00 m/s, and her takeoff point is 1.20 m above the pool.
(a) How long are her feet in the air in seconds? (b) What is her highest point above the board in meters? (c) What is her velocity when her feet hit the water in meters per second?
A flat circular mirror of radius 0.140 m is lying on the floor. Centered above the mirror, at a height of 0.810 m, is a light source. Calculate the diameter of the bright circular spot formed
A brick is initially 7.72 cm high and an aluminum can is initially 7.73 cm high. By how much should their temperatures be raised in order for the brick and the can to have accurately the similar height?
Three metal fishing weights, each with a mass of1.00x102g and at a temperature of 100.0oC,are placed in 1.00x102g of water 35.0oC. The final temperature of the mixture is 45.0oC. What is the specific heat of the metal in the weights?
q1. how much would an 80.0 kg person weight a on mars where an acceleration of gravity is 3.93 ms2 and b on earths moon
How much greater is an angular momentum of the Earth orbiting about the sun than the moon orbiting about the Earth? (Set up a ratio of angular momenta using data on inside back cover. The period of the moon is about 27.3 days.)
On a hot summer afternoon, Keith is out fishing in a rowboat when he decides to jump into the water and go for a swim, what is its velocity in the opposite direction after he jumps
A spring with a force constant of 3.0 × 104 N/m is initially at its equilibrium length. Find how much work must you do to compress it 0.070 meter
A 2 cm long section of the patellar ligament stretches to 2.002 cm when it is subjected to a tensile force of 10,000 N. What is the strain in this segment of ligament
What is the electric field vec E. What is force vec F on a -1.0 nC charge placed at the midpoint.
A harvest mouse can detect sounds as quiet as -10 . Suppose you are sitting in a field on a very quiet day while a harvest mouse sits nearby at the entrance to its nest. How far is the harvest mouse from the leaf
The pumps coefficient of performance is 3.8, and the heat pumpdelivers 7.54 MT of thermal energy to the building each hour. find at what ratemust work be done to run the heat pump
A -4.50 nC point charge is surrounded by a electrostatic conducting spherical shell that has an inner radius of 7.00 cm, an outer radius of 9.00 cm, and a net charge of +6.50 nC. Calculate the electric potential 8.00 cm from the point charge. (200V..
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