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A car has a 12 W reading lamp in the ceiling. This lamp operates with a potential difference of 12 V across it. Determine how much current flows through the lamp?
(in A)
a spherical capacitor is comprised of a solid inner conduction sphere of radius a with positive charge q and an
A beaker with a capacity of exactly 100mL contains 99.5mL of ethanol at 19degrees C. If it's temperature rises at what temperature will it overflow? (Ignore expansion of the beaker). The answer is not 23.6 degrees C so I am not sure how to figure it ..
A square coil and a rectangular coil are each made from the same length of wire. Each contains a single turn. The long sides of the rectangle are twice as long as the short sides.
A 4.5 kg fish swimming 2 m/s swallows an absent minded 1 kg fish swimming toward it at a velocity that brings both fish to a halt at once after lunch. What is the velocity v of the smaller fish before lunch.
Although they don't have mass, photons-traveling at the speed of light-have momentum. How fast could the ship be moving after 35 days
An atom is cooled to zero K, and confined in a harmonic potential V (x) = 1 m?2x2. At 2t=0, the potential is switched off, such that V (x) = 0
A small statue has a height of 3.5 cm and is placed in front of a concave mirror. The image of the statue is inverted, 1.5 cm tall, and located 12 cm away from the mirror. Find the focal length of the mirror.
You see lightning flash followed 8.2 seconds later by the sound of thunder. The ambient air temperature is 12°C. Approximately how far are you from the lightning
Waly Whacko claims to have invented a heat engine that will revolutionize industry. It runs between a hot source at 300oC and a cold sink at 25oC. What is the actual maximum efficiency of his engine
A car of mass 1530 kg traveling at 24 m/s is at the foot of a hill that rises 110 m in 3.8 km. Find the average power delivered by the car's engine
initially a yoga ball is partially blown up and its surface area measured. afterwards it is filled completely and its
An electron drops from the L shell to the K shell and gives off a K X-ray with a wavelength of 0.2510 nm. What is the atomic number of this atom
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