3 years ago

A light bulb has 0.25 A of current using a voltage of 120 V. What is the power rating for this bulb?

1 answer:

6 0

We can't tell what RATING is printed on the package of bulbs, but right now, the bulb is dissipating IxE= 30 watts of heat and light.

You might be interested in

Green plants give us oxygen to breathe using photosynthesis. Here is the unbalanced chemical reaction that occurs:

bekas [8.4K]

Books are always useful . Give me a "thank you" if i've been helpful

4 0

3 years ago

Read 2 more answers

Which exoplanet has the most Earth-like orbit?

Digiron [165]

Answer: Kepler-452b

I think

hope it helps

4 0

3 years ago

An electron with charge −e and mass m moves in a circular orbit of radius r around a nucleus of charge Ze, where Z is the atomic

shepuryov [24]

Answer:

$v=\sqrt{\frac{kZe^2}{mr}}$

Explanation:

The electrostatic attraction between the nucleus and the electron is given by:

$F=k\frac{(e)(Ze)}{r^2}=k\frac{Ze^2}{r^2}$ (1)

where

k is the Coulomb's constant

Ze is the charge of the nucleus

e is the charge of the electron

r is the distance between the electron and the nucleus

This electrostatic attraction provides the centripetal force that keeps the electron in circular motion, which is given by:

$F=m\frac{v^2}{r}$ (2)

where

m is the mass of the electron

v is the speed of the electron

Combining the two equations (1) and (2), we find

$k\frac{Ze^2}{r^2}=m\frac{v^2}{r}$

And solving for v, we find an expression for the speed of the electron:

$v=\sqrt{\frac{kZe^2}{mr}}$

6 0

3 years ago

Yuliya22 [10]

As wavelength increase, frequency decrease

8 0

3 years ago

The force of gravity on you is greatest when you are standing _____.

I am Lyosha [343]

The force of Earth's gravity on you is greatest when you stand as
close as you can to the center of the Earth (but not underground).

From the choices listed, that would be (c).

8 0

3 years ago