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A 60 lb sphere A of radius 5.0 inches is moving with a velocity of 5 ft/s to the right along a flat, frictionless surface. It strikes directly a 7.5 lb sphere of radius 2.5 inches which is initially at rest. If the coefficient of elasticity, e, is 1.0, perfectly elastic, and all spherical surfaces are frictionless, find the velocity of each sphere immediately after impact?
When the relative humidity is 49% and the temperature is 60°C, what is the partial pressure of water vapor in the air
While pacing in the hallway at a constant velocity, you drop a tennis ball so that it falls towards the floor. calculate the height above the floor from which the tennis ball is released
The rest energy of an electron is 0.511 MeV. The rest energy of a proton is 938 MeV. Assume both particles have kinetic energies of 1.70 MeV. By how much does the speed of the electron exceed that of the proton
You are walking around your neighborhood and you see a child on top of a roof of a building kick a soccer ball. How tall is the building that the child is standing on
Tarzan, with a mass of 80.0 kg, wants to swing across a ravine on a vine, how much kinetic energy (at least) must he have when he jumps off the cliff where he starts
A bat at flying east at 30 m/s sends out ultrasonic waves at 60kHz and receives them returned from an object moving east at 35.0 m/s, What is the sound frequency of the reflected wave as heard by bat
The sound level in decibels is typically expressed as ? = 10 log (I/I0), but since sound is a pressure wave, the sound level can be expressed in terms of a pressure difference. Intensity depends on the amplitude squared, so the expression is ? = 2..
A constant, uniform electric field points in the positive x-direction with the magnitude of 500 N/C. How much energy is required to move the particle
most of the motion generated by joints in the human body are examples of levers. an example of a third class lever is
A vertical solid steel post of diameter = 21and length = 2.90 is required to support a load of mass = 8300 . You can ignore the weight of the post. Take free fall acceleration to be . 1) What is the stress in the post? 2) What is the strain in the po..
Four point charges have the same magnitude of 2.4 x ten-12C and are fixed to the corners of a square 4.0 cm on a side. Three of the charges are positive and one is negative. Determine the magnitude of the net electric field that exists at the ce..
question1adjust the solution process discussed in class for uniform slow viscous flow past a sphere to the case of flow
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