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a) A 200kg car is traveling 22 m/s. Find the kinetic energy in Joules. b) The same car is lifted vertically upward and then dropped from rest. Find the height from which it is dropped if it strikes the ground at 22 m/s (neglect air resistance).
b) In a movie, a monster climbs to the top of a building 30 m above the ground and hurls a boulder upward with a speed of 25 m/s at an angle of 45° above the horizontal. How far from the base of the building does the boulder land?
A ball leans against a smooth frictionless post to which it is attached. The string is attached to the ball such that a line passes along the string during the center of the ball. If the string is 1.40m long and the ball has a radius of 0.110m, with ..
a rock is dropped from a tall bridge into the water below. if the rock begins with a speed of zero and has a speed of
A 2.22 kg steel ball strikes a massive wall at 10.4m/s at an angle of alpha = 58.4° with theplane of the wall. It bounces off with the same speed and angle. If the ball is in contact with the wall for 0.204 s, what is the magnitude of the average ..
A pion has a rest energy of 135MeV. It decays into two gamma rays, bursts of electromagnetic radiation that travel at the speed of light. find the energies of the two gamma rays
The car in a funfair ride has a mass 6.0 x 102 kg and tunes on an arm 5.0 m long. What torque, assumed constant, acts on the car during this acceleration
A certain lens focuses light from an object 1.25maway as an image 41.8cm on the other side of the lens. What type of lens is it
A 1.80 MHz sound wave travels through a pregnant woman's abdomen and is reflected from the fetal heart wall of her unborn baby. Determine the speed of the fetal heart wall at the instant this measurement is made
Two particles are fixed to an x axis: particle 1 of charge-4.00*10-7 C at x = 6.00 cm, and particle 2 of charge +4.00*10-7 C at x = 18.0 cm. Midway between the particles, what is their net electric field?
An electron is accelerated by a constant electric field of magnitude 300N/C. Find the acceleration of the electron
Modern lasers can create a pulse of light that lasts only a few fem to seconds. What is the length of a pulse of violet light that lasts 6.0 fs?
A 5.0 ? resistor is connected in series with another resistor and a 5.0 V battery. The current in the circuit is 0.70 A. Calculate the value of the unknown resistance
A flight attendant pulls her 70.10 N flight bag a distance of 258 m along a level airport floor at a constant speed. The force she exerts is 36.30 N at an angle of 52.0° above the horizontal.
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