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Question: The magnitude of the charge on an electron is 1.6 × 10-19 C; it is negatively charged.
a. Could Millikan have done his experiment with the air pumped out of the volume of space where he made an electric field, i.e., between the plates? Why?
b. Find the mass of a droplet of oil of density 0.92gcm-3 if the radius of a droplet is 3 μm.
c. An electric potential difference of 5000V is put across two large conducting plates separated by 2cm. What is the value of the electric field in the space between the plates?
d. If an electric field of 300kV/m exerts a force of 4.8 ×10-14 N on an electrically charged drop of oil, how much is the electric charge of the oil drop?
A .230 kg baseball is thrown with a speed of 41 m/s. If the above ball comes to rest in the catcher's mitt in .085 seconds, how much force does the ball apply on the catcher's mitt
A projectile is fired from ground level with a velocity of 500 m/s at 30° to the horizontal. Calculate its horizontal range, the greatest height it reaches, and the time taken to rise to that height.
after flying for 15 min in a wind blowing 42 kmh at an angle of 20o south of east an airplane pilot is over a town that
Use the simulation in the cannon interactive in this section to answer the following questions. (a) Does cannonball's horizontal velocity change as it moves through the air? (b) Does its vertical velocity change? (c) If you enhance the cannonball's h..
a solenoid 60 cm long and of radius 4.0 cm has 3 layers of windings of 300 turns each. a 2.0 cm long wire of mass 2.5 g
To test the quality of a tennis ball, you drop it onto the floor from a height of 4.66 m. What is its average acceleration during that contact
A uniform circular disk (merry-go-round) of radius R=1.76 m and mass M=28.4 kg freely rotates about a vertical axis, What is the magnitude of the angular velocity of the cat/disk system
An inductor and a resistor are connected in series. When connected to a 60 Hz, 90 V (rms) source, the voltage drop across the resistor is found to be 55 V (rms) and the power delivered to the circuit is 13 W.
A 51-g handball moving with a speed of5 m/s strikes the wall at an angle of37° with the normal, and then bounces off with the same speed at the similar angle by the normal. It is in contact by the wall for 2.0 ms. what is the average force exerted by..
Two sealed containers with volumes V1 and V2, respectively, contain dry air at pressures p1 and p2 and room temperature T. Find an expression (in symbolic form) for the new pressure
A square coil of wire with a single turn is placed perpendicular in a uniform 1.0T magnetic field. Each side has a length of 0.5m. The current through the coil is 20A. Determine the magnitude and direction of the magnetic force on each of the four si..
A rifle with a barrel length of 61.0 cmfires a 10.0 g bulletwith a horizontal speed of 360 {\rm m/s}. How long does it take the bullet to come to rest
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