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Consider the following.
(a) A rectangular block has the dimensions l x w x h. When a battery with a voltage V is connected across the end faces as shown in the left figure above, a current I1 flows through the circuit. If the same battery is connected across the top and bottom faces of the block as shown in the right figure, what is the current I2 that flows through the circuit? Give your answer in terms of I1. (Use the following as necessary: l, w, h, I1)
(b) Suppose l = 3.20 cm, w = 2.2 cm, and h = 2.00 cm; the battery voltage is 1.5 V and I1 = 3.30 A, determine the value of I2.
Calculate the ratio of the coulomb and gravitational forces between two protons. How does this ratio vary with the distance between them
A 200g, 40cm diameter solid cylindrical turntable rotates on frictionless bearings at 60rpm. A 20g block sits at the center of the turntable. the block then slides outward along a frictionless groove in the surface of the turntable.
The electromagnetic wave that delivers acellular phone call to a car has a magnetic field with an rms valueof 1.5 x 10^ -10 T. How much energy does this wave carry through the window during a 45s phonecall
An electric field of 7.85 10^5 V/m is desired between two parallel plates, each of area 42.0 cm2 and separated by 2.45 mm of air. What charge must be on each plate.
What is the direction of the induced current flowing through the moving rod? What is the rate that thermal energy is being dissipated in the moving rod?
An Eskimo pushes a 24.5 kg sled over snow with a force of 61.5 over a level distance of 6.0 m. a coefficient of kinetic friction (uk) of 0.100 exists between the sled and the snow. What is the final velocity of this sled
q1. the sun falls on a concave mirror and forms an image 4.5 cm from the mirror. if an object 22 mm high is placed 12.7
A projectile is fired straight upward from the Earth's surface at the South Pole with an initial speed equal to one third the escape speed. What is the altitude of the projectile at this instant
Three text books are stacked on the table, the math book has a mass of 0.5 kg, the English book has a mass of 1.0 kg and the Physics book has a mass of 1.5 kg. What is the normal force acting on the Physics book
a rocket initially at rest on the ground accelerates straight upward from rest with constant acceleration 44.1ms2 . the
Write your answer in scientific notation and show all your calculations.
A tanker ship spills oil (n=1.40) into the sea. Looking at this disaster from a helicopter overhead, what predominant wavelength of visible light do you see if the oil is 390nm thick
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