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The resistance and the magnitude of the current depend on the path that the current takes. The drawing shows three situations in which the current takes different paths through a piece of material. Each of the rectangular pieces is made from a material whose resistivity is ρ = 1.50 x 10-2 Ω*m, and the unit of length in the drawing is L0 = 3 cm. Each piece of material is connected to a 3.00-V battery. Find (a) the resistance and (b) the current in each case.
A 7.5-m long extension cord carries a current of 12 amps. The cord is made of two wires, Find the force between those two wires
A bat moving with a speed of 3.25 m/s and emitting sound of 36.0 kHz approaches a moth at rest on a tree trunk. What frequency is heard by the moth
A person pulls a toboggan for a distance of 39.7 m along the snow with a rope directed 33.0 ° above the snow. How much work is done on the toboggan by the tension force
A rectangular container measuring 23 cm 51 cm 65 cm is filled with water. What is the mass of this volume of water in kilograms and grams.
A 63.5-kg runner has a speed of 5.80 m/s at one instant during a long-distance event. If he doubles his speed to reach the finish line, by what factor does his kinetic energy change
At a pressure of 0.0500 atm a constant-volume ideal gas thermometer reads a temperature of 345 K. What is the thermometer's triple point pressure, Pt
Find the electrical and gravitational forces between the proton and electron in a hydrogen atom. Which force holds it together
Compute the velocity of the electron assuming that hydrogen is described by the Rutherford-Bohr model
A car traveling on a flat (unbanked) circular track accelerates uniformly from rest with a tangential acceleration of at. Determine the coefficient of static friction between the car and track from these data
A girl whirls a stone attached to a string 1.0m long in a circle with uniform speed. calculate the force provided by the rope to maintain the circular motion of the stone if the mass of the stone is 30.0g
Television stations broadcast in VHF and UHF (VHF is very high frequency). The VHF bands for digital broadcast lie within the frequency range of 54.0 MHz and 216 MHz. What is the broadcast frequency range for channel
If the surface of the water is calm and the pool is h = 1.52 m deep, find out the minimum diameter of the raft that would prevent the diamond from being seen.
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