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Oppositely charged parallel plates are separated by 5.26 mm. A potential difference of 600 V exists between the plates. (a) What is the magnitude of the electric field strength between the plates? 1 . N/C (b) What is the magnitude of the force on an electron between the plates? 2 N (c) How much work must be done on the electron to move it to the negative plate if it is initially positioned 2.91 mm from the positive plate? 3 J
The objective lens in a microscope with a 21.0 cm long tube has a magnification of -50.0 and the eyepiece has a magnification of 15.0. What is the focal length of the objective
A student decides to move a box of books into her dormitory room by pulling on a rope attached to the box. If the coefficient of friction is unchanged, what is the new acceleration of the box
The intensity of an electromagnetic wave is 8 x 10^7 W/m^2. What is the amplitude of the magnetic field of this wave
A 3-kg block is suspended by a spring and is at rest on the floor. The spring has a spring constant k equal to 360 kg/s2. what is the unstretched length of the spring
A 4 kg model rocket is launched, expelling 40.00 g of burned fuel from its exhaust at a speed of 550m/s. What is the velocity of the rocket after fuel has burned? Hint: Ignore the external forces of gravity and air resistance.
A laboratory ultracentrifuge is designed to produce a centripetal acceleration of 5.0 x 10^6 g at a distance of 4.00cm from the axis. What angular velocity in rev/min is necessary.
A 1200 kg car whose transmission is in neutral is coasting down
There are 5 pairs of plates: A,B, and D are charged plastic plates and C is an electrically neutral copper plate. A is attracted to B, C to A, C to D, B to D, How can you tell if they attract or do not
A 2.0 kg block is kicked up a wooden ramp that is inclined at a 30? angle to the horizontal. How long does the entire up and down trip take
The plates of a parallel-plates capacitor each have an area of 4.0cm^2 and are seperated by 0.02mm. The plates are charged with 30 uC, How much electrical energy is stored in the capacitor
An electric field given by = 6.0· - 3.9(y2 + 3.5)· pierces a Gaussian cube of edge length 3.2 m and positioned as shown in Fig. 23-56. (The magnitude is in newtons per coulomb and the position x is in meters.) What net charge (in Coulombs) is enclose..
Suppose that you hear a clap of thunder 18.4 s after seeing the associated lightning stroke. The speed of sound waves in air is 343 m/s and the speed of light in air is 3.00 x10^8 m/s. How long are you from the lightning stroke.
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