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If your roommate turns up the radio, increasing the sound level from 70 dB to 82 dB, what is the factor by which the intensity (in W/m^2) increases?
Assume a typical hummingbird has a lifespan of 4.00 years and an average heart rate of 1300 beats per minute. Compute the number of times a hummingbird's heart beats in its life, and express it in scientific notation. Make use of 365.24 days per y..
A gasoline engine with an efficiency of 0.4 generates 1800 W of power. how many liters of gasoline does the engine consume each hour
Radiation can supplement the energy needs of a home's water heater, Find what volume of water can be heated per hour from a temperature of 16.0oC to a temperature 61.0oC
One electron collides elastically with a second electron initially at rest. After the collision, the radii of their trajectories are 1.50 cm and 2.90 cm, Determine the energy (in keV) of the incident electron
A skateboarder, starting from rest, rolls down a 12.5 m ramp. When she arrives at the bottom of the ramp her speed is 6.10 m/s. (a) Determine the magnitude of her acceleration, assumed to be constant. .m/s2 (b) If the ramp is inclined at 26.5° wit..
A 1.0 μF capacitor has a potential difference of 6.0 V applied across its plates. how much additional energy does the capacitor store
An asteroid, who's mass is 7.8 × 10-4 times the mass of Earth, revolves in the circular orbit around the Sun at a distance that is 2.5 times the Earth's distance from the Sun.
What is the wavelength of the waves emitted by source? What is the difference in frequency between directly radiated waves and the waves reflected from a whale travelling straight toward the ship at 4.99? Suppose that the ship is at rest in the water..
How kinetic energy is related to linear momentum and What is the difference between elastic and inelastic collisions
A camper is trying to start a fire by focusing sunlight onto a piece of paper. The diameter of the sun is 1.39 × 109 m, What is the area of the sun's image on the paper
A charge of -4.26 micro-Coulombs is fixed at the center of a compass. find direction of the net electrostatic force acting on the charge
This question will ask you to determine the area of a flat piece of metal according to the data in the table below. etermine the mean, standard deviation, and the standard deviation of the mean for the width measurements
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