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A cannon ball (m=.7 kg) traveling at 200m/s hits and is impeded into a 400 kg car. If the car was initially at rest, what will be its velocity after the impact?
The ends of a 20cm long, 2.0cm diameter are maintained at 0°C and 100°C, What material is the rod made of
What would be the equilibrium temperature when a 270 g block of copper at 300°C is placed in a 150 g aluminum calorimeter cup containing 820 g of water at 12.0°C.
The Sun revolves around the center of the Milky Way Galaxy at a distance of about 30,000 light-years from the center, how many stars would there be in our Galaxy
A particular atomic energy state is characterized by a principle quantum number n = 4. How many orbital subshells are possible
A cat rides a merry-go-round while turning with uniform circular motion. At time t1 = 2.00 s, the cat's velocity is v1 = (3.50) + (4.00 m/s), find the magnitude of the cat's centripetal acceleration
The runner turns around and runs in the -x direction at the same speed. Now what is the kinetic energy of the runner
A 1.50 cm diameter parallel-plate capacitor with a spacing of 0.900 mm is charged to 300 V. What is the total energy stored in the electric field
On vacation, your 1350 kg car pulls a 540 kg trailer away from a stop light with an acceleration of 2.15 m/s2. (a) What is the net force exerted on the trailer? (b) What force does the trailer exert on the car? (c) What is the net force acting on ..
The center of a 1.40km diameter spherical pocket of oil is 1.5 km beneath the Earth's surface.Estimate by what percentage directly above the pocket of oil would differ from expected value of g for a uniform Earth? Assume the density of oil is 8.0 ..
The helium atom has a volume of about 3 x 30^-30 (m^3). What fraction of a volume of helium gas at STP is actually occupied by atoms
icyclists in the Tour de France do enormous amounts of work during a race. For example, the average power per kilogram generated by Lance Armstrong (m = 75.0 kg) is 6.50 W per kilogram of his body mass.
An induction cooktop generates an alternating magnetic field B(t)=(0.25 T)cos??t. Calculate the maximum emf induced in a pan modeled as a ring of radius 10 cm
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