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Calculate the net force on your 0.5-cm2 eardrum that air exerts on the inside and the outside after you drive from Denver, Colorado (elevation 1609 m) to the top of Pikes Peak (elevation 4301 m). Assume that the air pressure inside and out are balanced when you leave Denver, the pressure inside the eardrum does not change, and that the density of the air is constant and is equal to 0.80 kg/m3.
Use the second law of thermodynamics to explain why many poor people in developing countries live on a mostly vegetarian diet?
A person drops a cylindrical steel bar (Y = 1.50 × 1011 Pa) from a height of 3.00 m (distance between the floor and the bottom of the vertically oriented bar). what is the maximum compression of the bar
A proton is in a vacuum near the surface of Earth. Where should a second proton be placed so that the electrostatic forceit exerts on the first proton balances the weight of thefirst proton?
A fox fleeing from a hunter encounters a 0.795 m tall fence and attempts to jump it. By how much does the fox clear the fence
A 7.50kg shell at rest explodes into two fragments, one with amass of 3.00kg and the other with a mass of 4.50kg. how much kinetic energy does the lighter one gain
an electric dipole consists of charges 2e and -2e separated by 1.0 nm. it is in an electric field of strength 4.0 x 106
Will is attempting to swim to a dock directly across a river from his current position. In what direction should he swim relative to his intended path
A projectile is launched with initial speed of 60 m/s at an angle of 30 degrees above horizontal. the projectile lands on hillside 4 seconds later. what is velocity at the highest point of trajectory
In the x-y plane, a point of +2.6 uC is on the x-axis at (-3 cm, 0), and a second point charge of -3.4 uC is also located on the x-axis at the point (5cm, 0 cm), Determine the Electric Potential...Va and Vb at the points Pa (0,0) and Pb (0, 6cm)
a rubber raft of mass 3m floats past a dock at 1 msec toward the east. a girl of mass 2m runs down the dock and jumps
A hydrogen atom that is initially at rest absorbs a photon with an energy of 21 eV. What is the momentum of the atom
question1calculate the intensity distribution in a standing evanescent wave above a glassair interface created by
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