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Two masses undergo a front-to-back collision. The mass m has aninitial velocity 2v0, and the mass 2m has an initial velocity v0.After the collision, they stick together, forming a compound system. What is the final kinetic energy of the compound system?When the initial kinetic energy is 3mv0^2.
A worker pushes horizontally on a large crate with a force of 304 N and the crate is moved 4.4 m. How much work was done.
A ball is thrown horizontally with the speed of 15 m/s from the top of a building. It takes the ball 5 s to land on the ground. What is the speed of the ball when it hits the ground
assume the mass of cart 1 is m1 = 234 g and the mass of cart 2 is 181 g. Calculate the energy lost in the collision
A transformer is to be used to provide power for a computer disk drive that needs 6.6 V (rms) instead of the 120 V (rms) from the wall outlet. Find the number of turns in the secondary
An escalator moves 10 people (60 kg each) per minute from the first floor of a store to the second floor, 5 m above. what is the average power required
A bullet of massm = 15 g and velocity 260 m/s is shot into a block of wood that is firmly attached to the ground. What was the acceleration of the bullet
Light of wavelength 565 nm incident on a pair of slits produces an interference pattern on a distant screen in which the separation between adjacent bright fringes at the center of the pattern is 0.569 cm. What is the wavelength of the second sourc..
A 41-kg box is thrown at a speed of 220 m/s & is brought to a halt in a collision that lasts for a time of 6.5 m/s. Find the magnitude of the average net force that acts on the box during the collision.
The treasure map in the figure gives the following directions to the buried treasure: "Start at the old oak tree, walk due north for 460 paces, then due east for 130 paces. How far should you go to reach the treasure
At an amusement park, a swimmer uses a water slide to enter the main pool. Find the swimmer's speed at the bottom of the slide
How far from the dog would the suitcase land? You can ignore air resistance.
A massless, rigid board is placed across two bathroom scalesthat are separated by a distance of 2.00 m. Find the weight of the person
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