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Three resistors, 27, 49, and 79 , are connected in series, and a 0.55 A current passes through them.
(a) What is the equivalent resistance?
(b) What is the potential difference across the three resistors?
The pilot of an airplane traveling 180 km/h wants to drop supplies to flood victims isolated on a patch of land 150 m below. The supplies should be dropped explain how many seconds before the plane is directly overhead?
A 131 kg sign hangs between two buildings by two cables. Cable 1 is attached at a 36 degree angle wrt to the horizontal, and Cable 2 is attached at a 24 degree angle wrt to the horizontal. What is the tension in cable 1.
A certain ac signal at 1000 Hz is applied across an inductor and a 100-ohm resistor. If the power factor of the circuit is 0.4, what is the impedance of the circuit
A radio station broadcasts with a power of 50,000 watts. Estimate the average intensity of the wave at a distance of 50 km from the radio transmitting antenna
A cart of mass M = 1.2 kg can roll without friction on a level track. A light string draped over a light, frictionless pulley connects the cart to a hanger with mass m = 0.5 kg. The cart is released from rest, allowing it to roll, pulled by falling h..
A 2.3 kg pendulum bob is pulled out such that its center of mass is 0.26 m above its lowest point and released. What is the gravitational potential energy of the pendulum
The lowest pedal note on a large pipe organ has a fundamental frequency of 16 Hz, What is the length of the open-closed pipe that makes that note
A goldfish is swimming inside a spherical bowl of water having an index of refraction n = 1.333. find the apparent distance of the goldfish from the wall according to an observer outside the bowl
What is the reading of spring scale
A uniform magnetic field of magnitude 0.80 T is directed perpendicular to the plane of a rectangular loop, calculate the magnetic flux through the loop
A charge of -4.00 nC and a charge of -6.10 nC are separated by the distance of 60 cm. Find out the position at which a third charge of +7.90 nC can be placed so that net electrostatic force on it is zero.
A child playing in a swimming pool realizes that it is easy to push a small inflated ball under the surface of the water while a large ball requires a lot of force
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