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Q. Two charged objects have an attractive force of 1.3N. If the charge on one of the objects in tripled, what is the new force between the objects?
Q. Our galaxy, the Milky Way, contains approximately 4.0*10^11 stars with an average mass of 2.0*10^30kg each. How far away is the Milky Way from our nearest neighbor, the Andromeda Galaxy, if Andromeda contains roughly the same number of stars and attracts the Milky Way with a gravitational force of 2.4*10^30N?
George just graduated from college and is going on his first job interview. He has learned that there are two other candidates. Because of the information he has learned about the serial position effect, George asks to be either the first or the last..
What is lemmings kinetic energy
A 29.0 kg sled is being pulled across a horizontal surface at a constant velocity. The pulling force has a magnitude of 85.0 N and is directed at the angle of 30.0° above the horizontal. Find out the coefficient of kinetic friction.
Compute the average acceleration of car and lizard and the final velocity of a Ferrari.
Change values of the initial position, initial velocity, and the acceleration of the car so that its center follows the same path as the dot. What is the equation that describes motion of the dot.
Net average force using the concepts of Newton’s second law.
Find out d, the distance between the photogates, using the times and glider length. There is two ways to find this for the up and down directions.
A carbon sample of the same size taken from a fresh piece of bone emits 16 beta emissions a minute. How long ago did the saber-tooth tiger live?
What is an acceleration of the car
A metal ball with diameter of a half a centimeter and hanging from an insulating thread is charged up with 1020 excess electrons. An initially uncharged identical metal ball hanging from an insulating thread is brought in contact with the first ball,..
Vector A has a magnitude of 9.10 units and makes an angle of 54.0° with the positive x-axis. Vector B also has a magnitude of 8.00 units and is directed along the negative x-axis. Using graphical methods find the following.
If the activation energy for the vacancy formation is given as 0.77 eV for aluminium at (650 degrees Celcius) ^3, what would be the number of vacancies at 650 degrees Celsius? The atomic weight and the density of aluminium is 26.98 g/mol and 2.62 ..
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