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Q1. A certain compact disc player draws a current of 290 mA at 36.0 V. How much power is necessary to operate the player?
Q2. Assume a car's brakes can produce an acceleration of -7 m/s2. If the car is travelling at an initial speed of 28 m/s, what is the minimum distance needed to stop the car?
Q3. A spaceship moves past you at speed v. You calculate the ship to be 364 m long, whereas an astronaut on the ship measures a length of 420 m. Find v.
Five clarinets sit a distance of 11.5 m from the audience. Together the intensity level of the music is 78.5 dB, What is the intensity of one clarinet
A lens forms an image of an object. The object is 16.0 cm from the lens. is it erect or inverted
A 150g ball is thrown vertically upward from a window 10m above the ground at speed of 30 m/s What is the speed of the ball when it strikes the ground
A 1200-turn coil of wire 2.30cm in diameter is in a magnetic field that increases from 0 T to 0.110T in 12.0ms. What is the emf of the coil
During an earthquake, the top of a building oscillates with an amplitude of 32cm at 1.3Hz. What is the maximum acceleration of the top of the building
A 12.0V dc battery having no appreciable internal resistance, a 146.5? resistor, an 10.6mH inductor, and an open switch are all connected in series. After the switch is closed, what is the maximum energy stored in the inductor
Heavy rains have flooded your professor's basement to a depth of 6 cm. This basement is 12 m by 10 m in area. find the speed of the stream of water leaving the hose
At the one meter mark a +1 coulomb charge is placed. At the two meter mark a -1 Coulomb is placed. Determine the electric field at the zero meter point
The collision between a hammer and a nail can be considered to be approximately elastic. Estimate the kinetic energy acquired by a 11-g nail
A capacitor that is initially uncharged is connected in series with a resistor and a 406.7V emf source with negligible internal resistance, What is the resistance of the resistor
A car is traveling at 66.2 mph. The driver applies the brakes and the car decelerates at 1.3 m/s2. What is the stopping distance
The speed of the fastest-pitched baseball was 45.0 m/s , and the ball's mass was 145g. How many joules of kinetic energy did this ball have
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