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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 2.83-kg object is thrown vertically upward from the surface of Mars, where the acceleration due to gravity is g1 = 3.71 m/s2. The initial velocity is v1, and the object reaches a maximum height of y1.
An electrician connects two different bulbs in seriesto 120 V circuit. One bulb is rated as 40 W for a nominal voltage 220V, Which of the two bulb is producing more light
a 62g hollow copper cylinder is 10cm long and has an inner diameter of 1.0cm. the current density along the length of
Imagine fitting a mixture of ten Gaussians to data in a twenty-dimensional space. Estimate the computational cost of implementing inferences for this model by enumeration of a grid of parameter values.
What is the frequency heard by a person driving 62.41 km/h toward a blowing factory whistle (f = 425.84 Hz) is the air temperature is 20.03 oC
A baesball of mass 75gram is traveling 40m/s when it is caught. What average force is exerted by the ball when it is caught
You have a 2.0m long copper wire. You want to make an N-turn current loop that generates a 2.0mT magnetic field at the center when the current is 1.6A. What will be the diameter of your coil
A 0.500-kg particle has a speed of 2.30 m/s at point A and kinetic energy of 7.40 J at point B a) what is its kinetic energy at pt A. b) what is its speed at pt B.
A diffraction grating has 4436 lines/cm. Light that contains all wavelengths between 447 and 650 nm shines on the grating. Calculate the width of the dark area
A 1.9-kg block slides down a frictionless ramp. The top of the rampis 1.5m above the ground; the bottom of the ramp is 0.25m above theground. The block leaves the ramp moving horizontally, and lands ahorizontal distance d away. Find the distance d.
A landing craft approaches the surface of Penitgy, a planet in a far-away galaxy. The landing craft has two engines attached to the bottom, each angled 30 from the vertical. what is the mass of the landing craft
an electric field is generated by a charge imbalance and the field is expressed by coulombs law. what is the value and
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