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A battery with e = 12.0 Volt and internal resistance r = 1.9 ohm is connected to two 9.5-kΩ resistors in series. An ammeter of internal resistance 0.70 ohm measures the current, and at the same time a voltmeter with internal resistance 12kΩ measures the voltage across one of the 9.5-kΩ resistors in the circuit. Find what does the ammeter read? Find what does the voltmeter read?
An electron is bound in an infinite well (a box) of width 0.1nm. If the electron is initially in then n = 8 state and falls to the n = 7 state, find the wavelenght of the emitted photon
given that the earth rotates once per day about an axis passing through the north and south poles an axis that is
a 5.0-kg ball moving due east at 4.0 ms collides with a 4.0 kg ball moving due west at 3.0 ms. just after the collision
a glass lens has a scratch-resistant plastic coating on it. the speed of light in the glass is 0.670c and the speed of
What is the smallest distance required to stop the plane
A heat pump has a coefficient of performance of 3.90, How much energy does it deliver into a home during 12 h of continuous operation
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
A 800 kg car is travelling forwards at + 25 m s?1 along a level road. What is the acceleration during skidding
In a single slit diffraction experiment, a beam of monochromatic light of wavelength 640 nm is incident on a slit of width 0.400 mm. what are the positions of the first dark fringes
A coin 2.3 cm in diameter is held 37 cm from a concave spherical mirror of 40 cm radius of curvature. Locate the image of the coin
You have a small electromagnet that consumes 300 W from a residential circuit delivering 120 V at 60.0 Hz. What is the internal resistance of the electromagnet
Green laser light (λ=532 nanometer) falls on a double slit of separation 2 millimeter. Determine the linear fringe separation on a screen located in the focal pane of the lens
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