A spherical water drop 1.9 μm in diameter is suspended in calm air due to a downward-directed atmospheric electric field of magnitude E = 1790 N/C. (a) What is the magnitude of the gravitational force on the drop? (b) How many excess electrons does it have?
A spherical water drop 1.9 μm in diameter is suspended in calm air due to a...
A spherical water drop 1.6 um in diameter is suspended in calm air due to a downward-directed atmospheric electric field of magnitude E = 1000 N/C. (a) What is the magnitude of the gravitational force on the drop? (b) How many excess electrons does it have? (a) Number _______ Units _______ (b) Number _______ Units _______
A spherical water drop, 1.60 μm in diameter, is suspended in calm air owing to a downward-directed atmospheric electric field E = 492 N/C. What is the weight of the drop? How many excess electrons does the drop have?
A small drop of water is suspended motionless in air by a uniform electric field that is directed upward and has a magnitude of 8110 N/C. The mass of the water drop is 2.72 × 10-9 kg. How many excess electrons or protons reside on the drop?
A small drop of water is suspended motionless in air by a uniform electric field that is directed upward and has a magnitude of 12000 N/C. The mass of the water drop is 3.23 × 10-9 kg. How many excess electrons or protons reside on the drop?
A small drop of water is suspended motionless in air by a uniform electric field that is directed upward and has a magnitude of 8200 N/C. The mass of the water drop is 3.81x 10^-9 kg. (a) Is the excess charge on the water drop positive or negative? Why? (b) How many excess electrons or protons reside on the drop?
A small drop of water is suspended motionless in air by a unilform electric field that is directed upward and has a a magnitude of 8560 N/C. The mass of the water drop is 3.64 x 10ko. (a) Is the excess charge on the water drop positive or negative? O positive O negative This answer has not been graded yo (b) How many excess electrons or protons reside on the drop? Additional Materials Lu Section 18
66. A small drop of water is suspended motionless in air by a uniform electric field that is directed upward and has a magnitude of 8480 N/C. The mass of the water drop is 3.50 × 10-9 kg. (a) is the excess charge on the water drop positive or negative? Why? (b) How many excess elec- trons or protons reside on the drop?
In the famous Millikan oil-drop experiment, tiny spherical droplets of oil are sprayed into a uniform vertical electric field. The drops get a very small charge (just a few electrons) due to friction with the atomizer as they are sprayed. The field is adjusted until the drop (which is viewed through a small telescope) is just balanced against gravity and therefore remains stationary. Using the measured value of the electric field, we can calculate the charge on the drop and...
Honeybees acquire a charge while flying due to friction with the air. A 120 mg bee with a charge of + 23 pC experiences an electric force in the earth's electric field, which is typically 100 N/C, directed downward. What is the ratio of the electric force on the bee to the bee's weight? F/W = ______ What electric field strength would allow the bee to hang suspended in the air? E= _______ What electric field direction would allow the...
In the famous Millikan oil-drop experiment, tiny spherical droplets of oil are sprayed into a uniform vertical electric field. The drops get a very small charge (just a few electrons) due to friction with the atomizer as they are sprayed. The field is adjusted until the drop (which is viewed through a small telescope) is just balanced against gravity and therefore remains stationary. Using the measured value of the electric field, we can calculate the charge on the drop and...