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A 3.0 kilogram particle has a velocity (3.0i -2.5j) m/s, and a 2 kilogram particle has a velocity (1.0i+6.0j) m/s. Obtain the center-of-mass velocity of these particles?
A crate of mass 10.2 kg is pulled up a rough incline with an initial speed of 1.52 m/s. What is the change in kinetic energy of the crate
An automobile of mass m = 1100 kg is being towed by a truck whose driver observes that the tension in the rope is T = 3700 N, What is the work done to overcome friction in the car
A 1400-kg sports car accelerates from rest to 95km/h in7.4s What is the average prower delivered by the engine
The reflected sound is then mixed with the transmitted sound and 90 beats per second are detected. The speed of sound in body tissue is 1480.
The sound level measured 5.2 m away from a jet engine is 140 dB. At what distance is the sound level exactly half
A ball is thrown with an initial velocity of 14m/s. using the approximate value g=10 m/s^2, at what time does the ball reach its high point?
A Thermopane window of area 6.8 m2 is constructed of two layers of glass, each 5.4mm thick and separated by an air space of 2 mm. If the inside is at 12?C and the outside is at ?36?C, how much heat is lost through the window? The thermal conductivity..
Two point charges are placed on the y axis as follows: charge q1= -1.50 nC at y= -.600m, What is the net force (magnitude and DIRECTION) exerted by these two charges on a third charge
imagine the current passing through the collider is 1 picoamp.using the information below compute the area of the
A charged paint is spread in a very thin uniform layer over the surface of a plastic sphere of diameter 12.0 cm, giving it a charge of -15.0 microC. find the electric field: (a) just inside the paint layer, b) just outside the paint layer and c) 5..
a 5g snail crawls at 0.6mm/s between two rocks 14 cm apart. Treating this system as an infinite square well, determine the approximate quantum number
A fishing line is attached to a bober that has diameter of 5.00 cm and mass of 5.00g. A lead weight is attached to line. What is mass of lead
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