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If an evil genius decided to free the earth from the sun by charging both with an equal charge to generate an electrical force equal to the gravitational force between them find how much charge would be needed on each.
A trap door, of length and width 1.45 m, is held open at an angle of 65.0° with respect to the floor. what is the torque exerted on the trap door by the rope
The coefficient of volume epansion for diesel is 9.5*10 to the power of negative 4 degrees celcius an the coefficient of linear expansion for the steel truck is 11 times 10 mto the power of negative 6 degrees celcius.
dnp dinitrophenol is a compound that allows hydrogen ions to leak across a membrane. this leakage prevents the
the mean free path of an oxygen molecule is 2.0 times 10-5 m when the gas is at a pressure of 120 pa and a temperature
A 5 g sample of solid carbon dioxide evaporates into a 0.1 L vessel at room temperature (298K). Compute the work done when the system is then allowed to expand (a) isothermally against a constant pressure of 1 atm and (b) isothermally and reversibly ..
A spaceship approaching an asteroid at a speed of 0.6c launches a scout rocket with speed 0.4c. At what speed is the scout rocket approaching the asteroid
Two narrow slits 3 mm apart are illuminated with light from a sodium lamp (lamda = 589 nm), What is the thickness of this glass
a a photon of wavelength 5.21 um has just enough energy to promote a electron from the top of the valence band to the
A mirror is to be used to project a 2.00 tall image on a screen which is 4.70 from the mirror. What magnification is necessary to accomplish this task
the tires of a car make 71 revolutions as the car reduces its speed uniformly from 95 kmh to 44 kmh . the tires have a
What is the magnitude of the net torque exerted on the branch by the children? Suppose that the axis is located where the branch joins the tree trunk and is perpendicular to the plane formed by the branch and the trunk.
A steel ball bearing 7.0 mm in diameter is dropped into a cylinder of glycerin. What is the terminal velocity of the ball bearing
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