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Question: A roller coaster car moves 200 ft horizontally, and then rises 135 ft at an angle of 30.0° above the horizontal. It then travels 135 ft at an angle of 40.0° downward. What is its displacement from its starting point? Use graphical techniques.
A meteorologist tracks the movement of a thunderstorm with Doppler radar. At 8:00 PM, the storm was 60 northeast of her station. At 11:00 PM, the storm is at 80 north. What is the direction of the average velocity of the storm?
a 325kg object, initially moving at 7.50 m/s, to a final velocity of 28.5 m/s in 16.5 seconds. What was the change in kinetic energy of the object
Assume a falling body with mass m fellsan air resistance force which is proportional to the speed of the body (Fair= - bv),(a) determine the velocity as a function time for the body as well as the terminal velocity. (b) If the body falls downwith ..
A lunar lander is landing on the moon from 5.0 m above the surface, with a downward speed of 0.8 m/s. With the engine off, it is in free fall. find the speed of the lander just before it hits the surface
A boulder has a volume of 1 m3 and a mass of 5000 kg. what will be the effective mass of the boulder
A lawn mower is pushed at constant speed by a horizontl force of 10.0 lbs. determine the work done by the person
A 4 kg mass is hung from a string which is wrapped around a cylindrical pulley (a cylindrical shell). If the mass accelerates downward at 4.90 m/s2, what is the mass of pulley.
Suppose that the magnetic field has a magnitude of 0.130 T, the particle's speed is 6.0 multiplied by 106 m/s, and the radius of its path is 144.5 cm. Find the mass of the particle, given that its charge has a magnitude of 1.60 multiplied by 10?19 C...
A coin with a diameter of 2.50 cm is dropped on edge onto a horizontal surface. how far does the coin roll before coming to rest
One of the harmonic frequencies of tube A with two open ends is 1020 Hz. The next-highest harmonic frequency is 1088 Hz. What is the number of this next-highest harmonic
Monochromatic light is incident from the top onto two glass plates, as the drawing shows. What happens to the bright fringes
A man sits on the south bank of a 100m wide river that flows due east at 2m/s. The man can swim 3m/s, How long will it take him to cross
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