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A thin, 70.0g disk with a diameter of 7.50cm rotates about an axis through its center with 0.270J of kinetic energy.
What is the speed of a point on the rim?
Boat A negotiates a curve whose radius is 363m. Boat B negotiates a curve whose radius is 110m. Each boat experiences the similar centripetal acceleration. What is the ratio of speed of boat A to that of boat B.
An object is placed in front of a diverging lens of focal length of 17.0cm, Using the thin lens equation find the distance from the lens to the object and from the lens to the image
A 1200kg automobile travels at 90km/h. What is its kinetic energy? What net work would be required to bring it to a stop
The ink drops have a mass = 1.0×10-11 each and leave the nozzle and travel horizontally toward the paper at velocity = 22. The drops pass through a charging unit that gives each drop a positive charge by causing it to lose some electrons.
A proton moving at 6.80 106 m/s through a magnetic field of magnitude 1.80 T experiences a magnetic force of magnitude 7.00 10-13 N. What is the angle between the proton's velocity and the field
A mini-fridge needs to maintain a temperature of 277 K. The air outside the mini-fridge has a temperature of 301 K. What is the coefficient of performance of this mini-fridge
Two point charges q_1 = 2.10 nC and q_2 = -6.10 nC are 0.100 {rm{ m}} apart. Point A is midway between them; point B is 0.080 {rm{ m}} from q_1 and 0.060 {rm m} from q_2 Take an electric potential to be zero at infinity.
A long, current-carrying solenoid with an air core has 1780 turns per meter of length and a radius of 0.0130 m. What is the mutual inductance of this system
A spaceship of mass 2.20×106kg is cruising at a speed of 5.80×106m/s when the antimatter reactor fails, blowing the ship into three pieces. What is the speed of the third piece
A spherical shell 28 in diameter carries a total charge of 81 distributed uniformly over its surface. A 4 point charge is located at the center of the shell. What is the electric field strength 8 from the center.
A mass is attached to a vertical spring, which then goes into oscillation. At the high point of the oscillation, What is the period of oscillation
If astronauts could travel at v = 0.950c, we on Earth would say it takes (4.20 / 0.950) = 4.42 years to reach Alpha Centauri, 4.20 light-years away. How much time passes on the astronauts' clocks
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