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A parallel-plate air capacitor is made from two plates 0.250 m square, spaced 0.900 cm apart. It is connected to a 120 V battery. A) If the battery is disconnected and then the plates are pulled apart to a separation of 1.70 cm. Solve for C, Q, E, U.
An electric motor in a hair dryer is running at normal speedand, thus, is drawing a relatively small current. what happens to the temperature of the coil
question a 47.0-g golf ball is driven from the tee with an initial speed of 48.0 ms and rises to a height of 23.8 m.a
A water droplet of radius 0.015 mm remains hanging stationary in the air. If the electric field of Earth is 100 N/C, how many electrons must the water droplet lack? In which direction the electric field of Earth must be directed for that problem to m..
A gas is compressed at a constant pressure of 0.800 atmfrom 7.00 L to 3.00 L. In the process, 400 J of energy leaves the gas by heat.
If the mass of the electron is 9.109 × 10–31 kg, illustrate what is the magnitude of its relativistic momentum?
The average speed of a nitrogen molecule in air is about 6.70 * 10^2 m/s, and its mass is about 4.68 * 10^-26 kg. What average force does the molecule exert on the wall
The length of a beam increases by 1.26mm when its temperature is raised from 29.87oC to 71.49 oC. What is the length of the beam at the initial temperature
Astronauts on our moon must function with an acceleration due to gravity of 0.170g A. If an astronaut can throw a certain wrench 11.0{rm m} vertically upward on earth, how high could he throw it on our moon if he gives it the same starting speed i..
A frictionless pulley has the shape of a uniform solid disk of mass 2.1 and radius 10. A 1.10 stone is attached to a very light wire that is wrapped around rim of pulley and the system is released from rest.
A boy drops a stone vertically down from the margin of a 24-m cliff. After how many seconds will the two stones pass each other
A computer is reading data from a rotating CD-ROM. At a point that is 0.0256 m from the center of the disk, What is the centripetal acceleration at a point that is 0.0779 m from the center of the disc
Imagine that Earth is struck by a meteor with a mass of 5.23 x 1015 kg, and a speed of 8100 m/s. What speed would such a meteor give Earth in a head-on collision
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