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A 20.0\Omega resistor and a 30.0\Omega resistor are connected in series and placed across a 120-V potential dissimilarity.
1. What is the current in the circuit?
2. What is the voltage drop across each resistor?
3. What is the equivalent resistance of the circuit?
4. What is the voltage drop across the 2 resistors together?
In February 1955, a paratrooper fell 365 m from an airplane without being able to open his chute but happened to land in snow, suffering only minor injuries. What is the magnitude of the impulse on him from the snow
An airplane wing is designed so that the speed of the air across the top of the wing is 299 m/s, What is the lifting force on a wing of area 21.0 m2
On a frictionless horizontal surface below, a 1.5 kg mass traveling at 2.5 m/s collides with and sticks to a 3 kg mass that is initally at rest, What will be the max compression of the spring
A spring with constant k = 78 N/m is at the base of a frictionless, 30.0o inclined plane. calculate how far up the incline will it travel before it stops
if your body has a density of 967 kg/m^3, What fration of you will be submerged when in salt water? the density of salt water is 1025 kg/m^3
The loaded cab of an elevator has a mass of 2.8 x 10^3 kg and moves 214 m up the shaft in 23 s at constant speed. At what average rate does the force from the cable do work on the cab.
A weightlifter lifts 200kg from the floor to a height of 2m in 2s. How much work did the weightlifter perform
a fighter jet lands on the deck of an aircraft carrier. it touches down with a speed of 73.5 ms and comes to a complete
Imagine two 5.0 g bags of protons, one at the earth's north pole and the other at the south pole. Calculate the electrical repulsion that each bag exerts on the other.
An engine receives 890 J of heat from a hot reservoir, and gives off 370 J of heat to a cold reservoir. What is the work done? What is the efficiency of this engine?
question a curve in a road forms part of a horizontal circle. as a car goes around it at constant speed 14.0 ms the
Assume that a drop of mercury is an isolated sphere. What is the capacitance of a drop that results when 10 drops each of radius R = 2.80 mm merge
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