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Q. A toy train rolls around a horizontal 2 diameter track. The coefficient of rolling friction is 0.15. What is the magnitude of the train's angular acceleration after it is released?
Q. A 26 kg gun is standing on a frictionless surface. The gun fires a .0573 kg bullet with a muzzle velocity of 323 m/s. The positive direction is that of the bullet immediately after the gun was fired. Calculate the momentum of the gun immedately after the gun was fired.
The quartz crystal in a digital watch has a frequency of 32.8 kHz. What is its period of oscillation?
If, as is typical, each of them breathes about 500 {rm{ cm}}^3 of air with each breath, approximately what volume of air (in cubic meters) do these astronauts breathe in a year.
Calculate the magnitude, the direction of resultant force and the coefficient of kinetic friction.
You have a 56.9-mF capacitor initially charged to a potential difference of 10.1 V. You discharge the capacitor through a 4.77-Ω resistor. What is the time constant? After what multiple of the time constant does the potential difference reach 2.47 V.
A 320 piano slides 3.3 down a 24 incline and is kept from accelerating by the man who is pushing back on it parallel to the incline. Determine the work done by the man on the piano.
Find out the magnitude of the charge on the moving particle. The baby soon learns to bounce with utmost amplitude and minimum effort by bending her knees at what frequency.
A 140g coin sits on a horizontally rotating turntable. The turn table makes on revolution each 2 s. the coin is located 8.00 cm from the axis of rotation of the turntable. The acceleration of gravity is 9.81 m/s/s. what is the frictional force acting..
First work out the momentum before and after hitting the table. Don't forget the gravitational force.
Determine the location of the center of mass of the molecule as measured from the hydrogen atom (Chlorine is 35 times more massive than hydrogen.).
Coherent light with wavelength of 602 passes by two very narrow slits and the interference pattern is observed on a screen a distance of 3.00 from the slits. The first-order bright fringe is a distance of 4.84 from the center of the central bright..
On a cool morning, when the temperature is 16 deg Celsius, you measure the pressure in your car tires to be 20.0 psi. After driving 40 mi on the freeway, temperature of your tires is 56.0 deg Celsius. What pressure will your tire gauge now show.
A 1.50 multiplied by 103kg car starts from rest and accelerates uniformly to 18.50m/s in 13s. Assume that air resistance remains constant at 400N during this time.
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