Physics, 16.06.2021 14:00 makayladurham19
Hi!! If someone wouldn't mind helping me with my physics extra credit questions, that'd be nice :)) Here they are:
1. Find the wavelength of the lowest frequency sound (f=20 Hz) that is audible to the human ear.
2. Find the wavelength of the highest frequency sound (f=20,000 Hz) that is audible to the human ear.
3. After seeing a lightning flash, you hear the clap of thunder 2 seconds later. How far away is the lightning?
Answers: 3
Physics, 20.06.2019 18:04
A0.17kg ball rolls at 0.75m/s to the right on a frictionless surface and collides with a 0.17kg ball rolling to the left at 0.65m/s. (elastic collision) what is the final velocity of the second ball when the first is 0.5m/s to the left? what is the change in kinetic energy before and after?
Answers: 1
Physics, 21.06.2019 18:20
What color of light must blue light mix with to create white light? a. yellow b. white c. blue d. green
Answers: 2
Physics, 22.06.2019 13:00
The magnitude of the amount of energy released by burning a fuel source, measured in energy per unit mass, is called its fuel value. note that the fuel value is the negative of the isobaric specific heat of combustion for the fuel. if all the energy obtained from burning 1.23 pounds of butane with a fuel value of 10.85 kcal/g is used to heat 128.0 kg of water at an initial temperature of 18.3 °c, what is the final temperature? note that 1 lb = 453.6 g.
Answers: 3
Hi!! If someone wouldn't mind helping me with my physics extra credit questions, that'd be nice :))...
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