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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 one-meter-long glass tube is sealed at one end. How far from the midpoint will the mercury be when the closed end of the tube is immersed in boiling water
what is the potential difference between the plates. A particular freely falling object requires 1.85 s to travel the last 31.0 m before it hits the ground. From what height above the ground did it fall.
q1. points a and b have electric potentials of 243 v and 129 v respectively. when an electron released from rest at
A blue ball is thrown upward with an initial speed of 23.3 m/s, from a height of 0.7 meters above the ground. 2.9 seconds after the blue ball is thrown, What is the speed of the blue ball when it reaches its maximum height
a) Determine the magnitude and direction of the electrostatic force acting on particle A in the figure given below due to particles B and C . The values of the charge on these particles are indicated in the figure.
tennis ball A is dropped from a height of 15 m. Tennis ball B is thrown horizontally from a height of 15 m with a horizontal velocity of 25 m/s
Intense white light is incident on a diffraction grating that has 720 lines/mm. What is the angular separation between the violet edge (400 nm) and the red edge (700 nm) of the first order spectrum produced by the grating
An object starts from rest at t= 2 s at an initial position of x = 7.2 m and moves with constant acceleration. What is the magnitude of the acceleration of the object
A room with a pine ceiling measured 10 m x 6 m x 2 cm thick. On a cold day the temperature on inside of the ceiling is T1 = 24 oC, Find the rate the heat is moving through the pine ceiling
A galaxy located at a distance D of 1 million light years away has an angular size A= 5 degree. What is the approximate diameter of this galaxy
The hydraulic piston/cylinder system has a cylinder diameter D = 0.1 meter with a piston and rod mass of 25 kg. The road has a diameter of 0.01 m with an outside atmospheric pressure of 101 KPa. The inside hydraulic pressure is 250 KPa. How large a f..
Consider the collision between two hockey pucks in the figure below. They do not stick together. What is the final velocity of the other puck
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