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a driver puts on the brakes and decelerates from 25 m/s to zero in12.0s. what distance does the car travel?
Use the following data to calculate the speed vp of comet Halley at perihelion. Calculate of the speed va of comet Halley at aphelion
A geologist finds that a Moon rock whose mass is 10.15 kg has an apparent mass of 5.68 kg when submerged in water. What is the density of the rock
What mass of water at 29.0°C added to a Styrofoam cup containing two 60.0 g ice cubes from a freezer at -16.0°C will result in a final temperature of 5.00°C for the drink? Explain it.
When a3.0µF capacitor is connected to a generator whose rms output is29V, the current in the circuit is observed to be0.30A. What is the frequency of the source
The temperature of 3.25 mol of an ideal diatomic gas is increased by 23.5 ?C without the pressure of the gas changing. By how much does the rotational kinetic energy of the gas increase
Oxygen diffuses from the surface of insects to the interior through tiny tubes called tracheae. An average trachea is about 2 mm long, Find the concentration of oxygen in the air
A 500-gram mass is attached to a horizontal spring of spring constant 20 N/m and oscillates in simple harmonic motion on a frictionless surface. What is the total energy of the system
compute the tension in a string that whirls a 2kg toy in a horizontal circle of radius 2.5m when it moves at 3m/s
A transformer with 120. turns in its secondary supplies 12. volts at 220. ma to a toy train. The primary is connected across a 120. V wall outlet. What power is delivered by the wall outlet
At a factory, a noon whistle is sounding with a frequency of 491 Hz. As a car travelling at 78 km/h approaches the factory, the driver hears the whistle at frequency fi. After driving past the factory, the driver hears frequency ff. What is the chang..
A diesel engine does not use spark plugs to ignite the fuel and air in the cylinders. at the place of, the temperature required to ignite the fuel occurs because the pistons compress the air in the cylinders.
A ball of mass 1.020 g and positive charge q =45.2 microC is suspended on a string of negligible mass in a uniform electric field. We view that the ball hangs at an angle of theta=15.0 from the vertical. What is the magnitude of the electric field.
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