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A resistor with R = 8.04 Ω resistance is connected to a real (i.e. non-ideal) battery as shown in the figure.
The battery produces an electromotive force of E = 15.1 V. When it is connected to the load resistor above, the terminal voltage of the battery drops down to delta Vt = 10.5 V.
What is the internal resistance r of the battery?
What is the electric current flowing in the circuit? What is the power dissipated by the external resistor?
How much power is dissipated inside the battery?
What is the efficiency of the circuit in percent?
A diving board oscillates with simple harmonic motion of frequency 3.23 cycles per second. What is the maximum amplitude with which the end of the board could vibrate in order that a pebble placed there not lose contact with the board during the o..
A driver applies a horizontal force of 20 N (to the right) to the top of a steering wheel. Calculate the angular acceleration of the steering wheel about the central axis
Use a computer to produce a table and graph, like those in this section, for two interacting two-state paramagnets, each containing 100 elementary magnetic dipoles.
Where does an object need to be placed relative to a microscope for its 0.500 cm focal length objective to produce a magnification of -50
A particle has an acceleration of 6.19 m/s^2 for 0.350 s. What was the particle's initial velocity
A solid sphere of mass 0.605 kilogram rolls without slipping along a horizontal surface with a translational speed of 5.19 meter per second. find to what vertical height above the horizontal surface does the sphere rise on the incline
Find the magnitude and direction of the force on a proton at x = -3.2 m, y = 0.9 m.
A block of mass M1=3.5kg moves with velocity v1=6.3m/s on a frictionless suface.It collides with block of mass M2=1.7kg which is initally stationary. What is the coefficient of kinetic friction on the rough surface
A scuba diver and her gear displace a volume of 70.0L and have a total mass of 73.1kg. What is the buoyant force on the diver in sea water
Determine the maximum possible kinetic energy in electron volts of a photoelectron ejected from the metal that absorbs a 190-nm photon
A 1200 kg truck is accelerating uniformly from rest to 20.0 m/s east while travelling 30.0 m east across the level ground. The coefficient of friction between the tires and the road is 0.45.
A plane travels 1.5 km at angle of 38 degrees to the ground, then changes direction and travels 6.9 km at an angle of 11 degrees to the ground. What is the magnitude of the plane's total displacement? Answer in units of km.
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