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Question: Two bulbs are connected in parallel across a source of emf E = 12.0V with a negligible internal resistance. One bulb has a resistance of 3.0ohms , and the other is 4.0 ohms . A resistor R is connected in the circuit in series with the two bulbs. What value of R should be chosen in order to supply each bulb with a voltage of 2.4 V? For what value of R would the potential difference across each of the bulbs be 2.4 V?
A satellite that has a mass of 300 kilogram moves in a circular orbit of 5.00 x 10^7 meter above the earth's surface. Compute what is the speed of the satellite
two forces act on a 55 kg object. one force has magnitude 65 n directed 59deg clockwise from the positive x-axis and
If she were to use the mattress as a trampoline losing contact with it for part of each cycle. What minimum amplitude of oscillation does she need.
A disk-shaped merry-go-round of radius 3.02 m and mass 159 kg rotates freely with an angular speed of 0.635 rev/s. A 54.1-kg person running tangential to the rim of the merry-go-round at 3.07 m/s jumps onto its rim and holds on. Before jumping on the..
q1. a system consists of a uniform electric field of 42.6 nc directed in the positive x direction together with a
Two stationary point charges +3.00 nC and +2.00 nC are separated by distance of 50.0 cm. An electron is released from rest at point midway among the two charges and moves along the line connecting the two charges. What is the speed of the electron wh..
A cube 22 centimeters on each side contains 2.2 grams of helium at 20° Celsius. 1300 Joules of heat energy are transferred to this gas. What is the final pressure
Three electrons are placed at the vertexes of an equilateral triangle with side length of 5.1 nm. find the potential energy of this arrangement of charges
A potter's wheel is rotating around a vertical axis during its center at a frequency of 1.7 rev/s. The wheel can be considered a uniform disk of mass 6.0 kg and diameter 0.40 m. The potter then throws a3.1 kg chunk of clay that is shaped like a flat ..
two metal objects have net charges of 81 pc and -81 pc which result in a 26 v potential difference between them. a what
question1a 52 kg mountain climber starting from rest climbs a vertical space of 730 m. at the top she is again at rest.
A Gas of diatomic molecules is in equilibrium at a temperature of 340 K. Assuming that the rotational inertia of the molecule is 2.5 x 10-40 kg•m2, Determine the mean angular momentum of the molecules
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