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A rollercoaster car has a mass of 600 kg when fully loaded with passengers. The car passes over a hill of radius 15 m. At the top of the hill, the car has a speed of 8 m/s. what is the force of the track on the car at the top of the hill?
A car travelling east at 41.2 m/s passes a trooper hiding at the roadside. The driver uniformly reduces his speed to 25 m/s in 3.90 s.
a hair dryer operates at 1800 watts along with a 240 watt power resistor connected in series. Utilizing a 120 volt source, determine the individual resistance Ri and the voltage drop Vi across each compenent in the circuit
An electron moving along x axis with a constant speed of v = 5x10^6 m/s i enters the region of a uniform electric field, What is the verticle displacement y of the electron 4 ns later
A 54.0kg skateboarder wants to just make it to the upper edge of a "quarter pipe," a track that is one-quarter of a circle with a radius of 3.90m
A raindrop of mass 3.27 10-5 kg falls vertically at constant speed under the influence of gravity and air resistance, What is the work done on the raindrop by air resistance
A thin rod consists of two parts joined together. One-fourth of it is silver and three-fourths is gold. The temperature decreases by 21 C°.
A steel wire strung between two supports is initially horizontal when there is no tension on it. When a 9.5 kg painting is hung on the wire, the wire makes a 25° angle to the horizontal, as shown. Illustrate what is the diameter of the wire?
An LC circuit is built with a 50mH inductor and an 8.0pF capacitor, The capacitor voltage has its maximum value of 40V at t=0s, What is the inductor current at that time
Find the maximum displacement of the 100,000 kg sace station if the astronaut's motion has an amplitude of 0.100 m.
What angle did the hawk make with the horizontal throughout its descent? For how long did the mouse enjoy the free fall.
The brakes are applied to a car traveling on a dry, level highway. A typical value for the magnitude of the car's acceleration is 5.45 m/s2. If the car's initial speed is 33 m/s, how long does it takes to stop and how far does it travel, starting ..
Calculate the terminal voltage for a battery with an internal resistance of 0.650? and an emf of 8.00V when the battery is connected in series with an 98.0?? resistor
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