Physics, 03.06.2021 02:00 emmmssss21
The power in a lightbulb is given by the equation P= PR, where /is the current
flowing through the lightbulb and Ris the resistance of the lightbulb. What is
the current in a circuit that has a resistance of 25.0 and a power of 30.0 W?
Answers: 2
Physics, 22.06.2019 11:00
If a simple machine reduces the strength of a force, what must be increased?
Answers: 3
Physics, 22.06.2019 14:00
How much energy must a refrigerator absorb from 225 g of water so that the temperature of the water will drop from 35°c to 5°c
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Physics, 23.06.2019 12:00
Awave is propagating from left to right in a medium. the particles in the medium are also vibrating from left to right. what kind of wave does this describe? a. longitudinal wave b. transverse wave c. mechanical wave d. electromagnetic wave
Answers: 2
Physics, 23.06.2019 16:30
Figure shows a simple cathode-ray tube. a beam of particles, emitted by the cathode, strikes the centre of the screen.a. why the cathode must be heated? b. what is the principal energy change that occurs when the beam strikes the screen? c describe and explain what you would expect if the two deflecting plates g and h were connected to an alternating voltage supply
Answers: 3
The power in a lightbulb is given by the equation P= PR, where /is the current
flowing through the...
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