All categories

3 years ago

How does the brightness of a bulb tell you about the energy of electrons passing through it?

1 answer:

8 0

The brightness of the bulb doesn't tell you anything about the energy of the
electrons passing through it.

It tells you how much total energy is lost by the total flow of electrons through
the bulb. You can't tell what part of that is due to a large or small number of
electrons, or what part of it is due to each electron losing a large or small amount
of energy on the way through.

You might be interested in

The rate traveled from Amarillo to Austin by a bus averages 60 miles per hour. The bus arrived in Austin after eight hours of tr

jeyben [28]

Answer:

the car would arrive after 10 hr to Austin.

Explanation:

bus average from amarllo to austin = 60 miles per hour

time takne by bus to reach austin = 8 hr

automobile average from amarllo to austin = 60 miles per hour

from the information given in the question:

60 mph --- 8 h

48 mph --- x h

By using The inverse variation:

60 : 48 = x : 8

60* 8 = 48* x

480 = 48*x

x = 480/48

x = 10 h

the car would arrive after 10 hr to Austin.

3 0

3 years ago

The flow rate in a firehose is 0.524 m3/s. It is able to shoot water to the top of a building 40.4 m tall, but not higher. You r

Marrrta [24]

Answer:

A fire hose must be able to shoot water to the top of a building 35.0 m tall ... Water enters this hose at a steady rate of 0.500 m3/s and shoots out of a round nozzle. ... I know that Flow rate=0.500 m3/s=A*V. I know the pressure needed to ... The first equation has no potential while the second has no kinetic.

Explanation:

3 0

3 years ago

Please someone help

SCORPION-xisa [38]

holding it and slowly moving forward 2.0m

4 0

3 years ago

A football player kicks a 0.94 kg football with a force of 2.4 N.

Artyom0805 [142]

2.6m/s²

Explanation:

Given parameters:

Mass of football = 0.94kg

Force on ball = 2.4N

Unknown:

The acceleration of the ball = ?

Solution:

According to Newton's second law of motion "the net force on a body is the product of its mass and acceleration".

Net force = mass x acceleration

Make acceleration the subject of the expression;

Acceleration = $\frac{net force}{mass}$

Acceleration = $\frac{2.4}{0.94}$ = 2.6m/s²

learn more:

Acceleration brainly.com/question/3820012

#learnwithBrainly

6 0

3 years ago

Read 2 more answers

When the temperature of an ideal gas is increased, what happens to its pressure?

lorasvet [3.4K]

<h2>Answer: Its pressure is also increased</h2>

Explanation:

The expression for an Ideal Gas is:

$P.V=n.R.T$

Where:

$P$ is the pressure of the gas

$n$ the number of moles of gas

$R$ is the gas constant

$T$ is the absolute temperature of the gas

As we can see, there is a direct proportional relation between the temperature and the pressure, which means that if the temperature increases the pressure of the gas increases as well.

6 0

3 years ago