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A skydiver, mass 80 kg, jumps out of an airplane traveling 150 km/h horizontally at an altitude of 1000 m. When she reaches the ground, her speed is 8.0 m/s. How much energy was dissipated with air resistance during the jump?
The author's cat enjoys chasing chipmunks in the front yard.
A hardworking ant must supply 0.0500 N to pull a small piece of fruit at constant velocity over a distance of 8.00 cm up a small hill to the entrance of the colony. calculate the mass of the piece of fruit in grams
a block is on a horizontal surface a shake table that is moving back and forth horizontally with simple harmonic motion
a small asteroid mass of 120g strikes a glancing blow at a satellite in empty space. the satellite was initially at
earths atmosphere is constantly bombarded by cosmic ray protons that originate somewhere in space. if the protons all
find the moment of inertia of a hoop a thin-walled hollow ring with mass m and radius r about an axis perpendicular to
A charge, Q2 = -7.00x10-6 C, is 11.00 cm to the right of charge Q1 = 6.00x10-6 C. Where can a third charge are placed, along the line connecting Q1 and Q2, such that it experiences no net force (other than ±?)?
A 150g copper bowl contains 220 g of water, both at 20.0degrees C. A very hot 300g copper cylinder is dropped intothe water, What is the original temperature of the cylinder
A ball on the end of a string is whirled around in a horizontal circle of radius 0.326 m. The plane of the circle is 1.1 m above the ground. Find the centripetal acceleration of the ball during its circular motion
A truck is traveling around a level curve of radius 104.2 m at an instantaneous speed of 20.4 m/s. The truck's speed is increasing at the rate of 2.18 m/s2. Discover the magnitude of the frictional force on a 105.2 kg crate resting on the floor of th..
A bullet with a mass m = 4.83 g and initial speed of 330 m/s passes through a wheel which is initially at rest, What is the angular speed of the wheel just after the bullet leaves it
A 1.0 mCi source of Phosphorus called P-32, a beta emitter, is imlanted in a tumor where it is to administer 36 Gy. The half-life is 14.3 days and 1 mCi delivers about 10 mGy/min/ Approximately how long should the source remain implanted?
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