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A capacitor has a capacitance of 7.38 . What amount of excess charge must be placed on each of its plates to make the potential difference between the plates equal to 26.0 ?
Three equal point charges, each with charge 1.00 , are placed at the vertices of an equilateral triangle whose sides are of length 0.350. Illustrate what is the electric potential energy of the system?
A hydrogen molecule with an initial velocity of 1200m / s makes a collision with a molecule of oxygen at rest. The reason for the masses of molecules is mO / mH = 16. What are the speeds of the molecules after collision.
The total volume of water in the oceans is approximately 1.40 multiplied by 109 km3. Find the increase in mass of the oceans produced by an increase in temperature of 4.8°C
The graphite in a pencil has a resistivity of7.84×10−6 W×m.The graphite's diameter is 0.700 mm and its length is40.0 mm. (a) Find the resistance of this graphite "wire."
A room measures 3.0 m by 4.5 m by 6.0 m. If the heating and air-conditioning ducts to and from the room are circular with diameter of 0.30 m, WHat is the necessary flow speed in the duct
A basketball leaves a player's hands at a height of 2.20m above the floor. what is the range of initial speeds allowed to make the basket
The helium-neon laser you have used in this lab produces photons with an wavelength of 632.8 nm at a power of 3 milliwatts. How many photons are emitted from the laser every second
A 220 g air-track glider is attached to a spring. The glider is pushed in 12cm against the spring, and then released. A student with a stopwatch finds that 16 oscillations take 11.5.
q1. the rotational inertia of a collapsing spinning star changes to 45 its initial value. what is the ratio of new
A 2.0g lead bullet at 0 C is fired into a large block of ice at 0C, in which it becomes embedded. What speed would result in the bullet being melted
A 10 g bullet traveling at 450m/s strikes a 8.0kg , 1.0-m-wide door at the edge opposite the hinge. What is the angular velocity of the door just after impact
A simple harmonic oscillator consists of a block of mass 1.70 kg attached to a spring of spring constant 144 N/m. What is the amplitude of the oscillations
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