Physics, 06.11.2020 22:50 babyduckies37
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What best describes the greatest height a ball will bounce off the ground after being dropped from a height of 50 centimeters? (5 points)
A.) Less than 50 centimeters, as the ball transforms some of its thermal energy into
sound energy
B.) Less than 50 centimeters, as the ball transforms some of its potential energy into sound energy
C.) Greater than 50 centimeters, as the ball transforms some of its thermal energy into potential energy
D.) Greater than 50 centimeters, as the ball transforms some of its potential energy into thermal energy
Answers: 2
Physics, 22.06.2019 00:20
Suppose that an electromagnetic wave which is linearly polarized along the x−axis is propagating in vacuum along the z−axis. the wave is incident on a conductor which is placed at z > 0 region of the space. the conductor has conductivity σ, magnetic permeability µ and electric permittivity ε. (a) find the characteristic time for the free charge density which dissipates at the conductor. (b) write the maxwell equations and derive the wave equation for a plane wave propagating in a conductor. (c) find the attenuation distance at which the incident amplitude reduces to e ^−1 of its initial value. (d) find the electric and magnetic fields inside the conductor. 8 (e) find the power loss per area of the incident electromagnetic wave at the surface of conductor.
Answers: 1
Physics, 22.06.2019 06:20
Oxygen undergoes an isentropic expansion from 120 degree c and 280 kpa absolute to 140 kpa absolute. determine the final temperature of the oxygen and the amount of work per kg of o_2 produced in the process if it is adiabatic.
Answers: 1
Physics, 22.06.2019 09:00
When a bicycle coasts uphill, it moves slower and slower as it climbs. why? a. its kinetic energy is transforming into heat energy. b. its potential energy is transforming into kinetic energy. c. its kinetic energy is transforming into potential energy and heat energy. d. its potential energy is transforming into kinetic energy and heat energy.
Answers: 1
ASAP I NEED HELP EASY POINTS
What best describes the greatest height a ball will bounce off the gro...
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