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A 2120 kg car moving east at 10.7 m/s collides with a 3240 kg car moving east. The cars stick together and move east as a unit after the collision at a velocity of 6.48 m/s.
a) what is the velocity of the 3240 kg car before the collision?b) what is the decrease in kinetic energy during the collision?
A charge of -6 nC is at the origin and a second charge of 11.0 nC is at x = 5.0m. Find the magnitude and direction of an electric field halfway in between the two charges.
A resistor of unknown resistance and a 48.0-? resistor are connected across a 128.0-V emf device in such a way that an 10.0-A current flows
You're an optometrist, mounting a projector at the back of your 4.2-m-long exam room, 2.6m above the floor. At what height should you center the pattern on the wall
A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 8.90 m/s at an angle of 23.0° below the horizontal. Find the height from which the ball was thrown
An electron has an initial velocity of 3.00 multiplied by 106 m/s in a uniform 10.0 multiplied by 105 N/C strength electric field. How long does it take the electron to come to rest
It is proposed that future space stations create an artificial gravity by rotating, What rotation period will provide "normal" gravity
Two newly discovered planets follow circular orbits around a star in a distant part of the galaxy, What is the orbital period of the faster planet, in years
The maximum characteristic x-ray photon energy comes from the capture of a free electron into a K shell vacancy. What is this photon energy in keV
A pickup truck has a width of 78.3 in. what magnitude emf is induced between the driver and passenger sides of the truck
Sirius B is a white star that has a surface temperature (in kelvins) that is four times that of our sun. Sirius B radiates only 0.040 times the power radiated by the sun. Our sun has a radius of 6.96 × 108 m. Assuming that Sirius B has the same emiss..
For a very simple model, consider a solid iron sphere 2.00 cm in radius. Assume the temperature is always uniform throughout its volume. Find the energy of one photon
A spherical object with a radius of 40.0 cm has a net charge of 37.7uC distributed uniformly throughout its volume, Using Gauss's Law, calculate the electric field 71.5 cm from the center of the sphere
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