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A 9-volt battery is connected across the plates of a capacitor (70 pF). Calculate the charge on each plate and the number of electrons on the negative plate if the charge on an electron is 1.6 x 10-19 C.
An inventor designs an ice boat that is propelled by pumping a jet of water directly out the rear in a direction parallel to the ice. What is the velocity of the ice boat when the water is gone
A 19.8-g piece of Styrofoam carries a net charge of -0.646 µC and is suspended in equilibrium above the center of a large, What is the charge per unit area on the plastic sheet
A wheel 33cm in diameter accelerates uniformly from 240 rpm to 360 rpm in 6.5s. How far will a point on the edge of the wheel have traveled in this time?
Suppose you are 80 cm from a plane mirror. How large an area of the mirror is utilized to reflect the rays entering one eye from a point on the tip of your nose if your pupil diameter is 4.4 mm?
The two springs in the figure each have a spring constant of 11N/m. They are stretched by 0.80cm when a current passes through the wire. How big is the current
A 238/92U nucleus is moving in the x direction at 5.0 * 10^5 m/s when it decays into an alpha particle 4/2He and a 234/90Th. Write an expression for the conservation of momentun in the x direction
How many times heavier is the electron in the particle accelerator than in the computer monitor?
A sphere of mass m strikes a vertical wall heading to the right and bounces off it now going left. The magnitude of the momentum of the sphere just before impact is pB and just after impact is pA. The sphere is in contact with the wall for time t...
An oil droplet with 13.0 excess electrons is observed between two parallel electrodes spaced 11.0mm apart. What is the radius of the droplet
How many turns of wire would be required to make a 170-mH inductor out of a 34.0-cm-long air-filled solenoid with a diameter of 5.2cm
an electrically neutral thin square metal slab measuring 4.80 on a side is placed in a uniform external field that is
Two tuning forks are producing sounds of wavelength 34.40 cm and 33.94 cm simultaneously. How many beats do you hear each second
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