How do you find the radius of a drop?

By observing the terminal velocity of a drop it is possible to determine its radius. r=√9ηv2(ρoil−ρair)g.

What is the radius of the orbit when the electric field is removed?

If the electric field is removed, then the electron will revolve in an orbit of radius is 45 m.

What is the electric charge on the droplet?

The deionized water droplets dispensed from pipette tips had a large positive charge of ~10−10 C (Figure 2c), which is comparable to the charge acquired by direct charging with an electrified electrode under electric field of 3 kV/cm7.

What is R the radius of curvature of the motion of the proton while it is in the region containing the magnetic field?

In a magnetic field, the charge’s direction of motion changes, but the magnitude of the speed of the charged particle remains unchanged. Thus, the radius of curvature of the proton is 1.38m .

Are water droplets charged?

In a completely unexpected finding, MIT researchers have discovered that tiny water droplets that form on a superhydrophobic surface, and then “jump” away from that surface, carry an electric charge. The finding could lead to more efficient power plants and a new way of drawing power from the atmosphere, they say.

Is water vapor positively charged?

Abstract: Positive charge is found in newly formed water vapor.

How do you find the electric field size?

the magnitude of the electric field (E) produced by a point charge with a charge of magnitude Q, at a point a distance r away from the point charge, is given by the equation E = kQ/r2, where k is a constant with a value of 8.99 x 109 N m2/C2.

What is the magnitude of an electric field?

The magnitude of the electric field is simply defined as the force per charge on the test charge. The standard metric units on electric field strength arise from its definition. Since electric field is defined as a force per charge, its units would be force units divided by charge units.

What will happen to the radius of curvature of the trajectory if the magnitude of the magnetic field is doubled?

It becomes one-half as large.

How do electrons move in magnetic field?

All charged particles interact with electromagnetic fields via the Lorentz force. This interaction causes electrons in a magnetic field to move in a corkscrew pattern. According to classical physics, electrons should rotate about the magnetic-field direction with a single frequency, called the “cyclotron frequency”.