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A car with a mass of 1500 kg is traveking directly east at a slow speed of 1.20 mph and eleastically with a smaller car of mass of 1275 kg that is also traveling directly east at a speed of 7.0 mph.
A.) Calculate the momenta of the cars before the collision.
B.) Calculate the speeds and directions of the cars after the collision.
A cockroach of mass m lies on the rim of a uniform disk of mass 3 m that can rotate freely about its center like a merry-go-round. find the angular velocity of the cockroach-disk system
A plane leaves the airport in Galisto and flies 165 at 68.0 east of north and then changes direction to fly 230 at 48.0 south of east, after which it makes an immediate emergency landing in a pasture.
A hollow conducting sphere has an inner radius of r1 = 0.19 m and an outer radius of r2 = 0.35 m, What is the field E in N/C 1 m from the sphere's outer surface
An isotope of phosphorus called P-32 is radioactive. It decays with half life of 14.3 days with the emission of beta particle. A 1.0 m?Ci source of P-32 is implanted in a tumor where it would deliver radiation dose of 28.6 Gy.
For the Atwood's machine, suppose the masses have an initial speed of v = 0.22 m/s and that m2 is moving upward. How high does m2 rise above its initial position before momentarily coming to rest, given that m1 = 3.5 kg and m2 = 3.1 kg.
A bullet with a mass of 4.95 g and a speed of 940 m/s penetrates a tree horizontally to a depth of 6.15 cm. Calculate the magnitude of this frictional force
A source has a half life of 30.2 years. It was created 19 years ago with an initial activity of 1 micro curie. Calculate the initial number of atoms in the sample
A fireworks rocket is launched vertically into the night sky with an initial speed of 40 m/s. find the magnitude and direction of the second piece
A lightweight electric car is powered by ten 12-V batteries, What must be the power of the electric motor if the car is to travel at a speed of 90 km/h
If the 2 kg mass slides on a horizontal frictionless surface, what is the speed of the mass 4 kg while it has fallen a distance 0.4 m downward from its rest position.
An 84.6-kg climber is scaling the vertical wall of a mountain. His safety rope is made of nylon that, How much is the rope stretched when it breaks his fall and momentarily brings him to rest
An aluminium block of mass m1 = 3.45 kg and a copper block of mass m2 = 6.30 kg are connected by a light string over a frictionless pulley. They sit on a steel surface, where θ = 40.0°
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