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What is the total electric flux through a closed surface containing a 2.0 μC charge?
One CD player is said to have a signal-to-noise ratio of 84 dB
dB, whereas for a second CD player it is 95 dB
dB. What is the ratio of intensities of the signal and the background noise for the first device?
Express your answer using two significant figures.
A crate at rest with a mass of 75 kg is being pushed by a force of 620 N. If the coefficient of kinetic friction between the crate and the floor is 0.55, determine how fast the crate will accelerate, and how far the crate will travel in 3.0 seconds.
The density of gold is 19.3 g/ cm3. What is this value in kilograms per cubic meter?
The nucleus of a plutonium-239 atom contains 94 protons. Assume that the nucleus is a sphere with radius 6.64 fm and with the charge of the protons uniformly spread through the sphere. At the surface of the nucleus, what are the (a) magnitude and (b) direction (radially inward or outward) of the electric field produced by the protons?
What is the energy exchange that occurs when a clock spring unwinds?
- A pendulum has 15J of potential energy at the top of its swing.
a) What is its kinetic energy at the bottom of its swing?
You built a circuit consisting of three parallel plate capacitors with capacitances of 2.0 F, 3.0 F, and 5.0 F, respectively, which are connected in parallel. The whole circuit is connected to a 100 V line. What is the (a) total capacitance, (b) charge stored in each capacitor, and (c) potential difference across each capacitor?
Calculate the gravitational force between two objects when they are 0.630m apart. Each object has a mass of 7.00kg.
Calculate the gravitational force between two objects when they are 0.630m apart. Each object has a mass of 7.00kg.
#340153 on Dec 2023