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3 years ago

Condensation _____.

2 answers:

8 0

Hey there!

Condensation _____.

Answer: 
is the change from liquid water to water vapor

Hope this helps
Have a great day (:

lions [1.4K]3 years ago

3 0

The answer is letter A!!

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Two bulbs marked 200 W-250 V and 100 W-250 V are joined in

lozanna [386]

Answer:

P = 66.67 W

Explanation:

Joule Heating

It's the process by which the electric current passing through a conductor produces heat.

Also known as Joule's first law or the Joule–Lenz law, states that the power of heating generated by an electrical conductor (P) is proportional to the product of its resistance (R) and the square of the current (I).

It can be described by the equation that follows:

$P = I^2.R$

Also, we can calculate the voltage V with the formula of Ohm's law:

$V = I.R$

Combining both equations, power can be related to the voltage:

$\displaystyle P=\frac{V^2}{R}$

Given the power and the voltage, the resistance can be calculated by solving for R:

$\displaystyle R=\frac{V^2}{P}$

There are two bulbs marked P=200W V=250V and P=100 W V=250.

The first bulb has a resistance of:

$\displaystyle R_1=\frac{250^2}{200}$

$\displaystyle R_1=312.5\Omega$

The first bulb has a resistance of:

$\displaystyle R_2=\frac{250^2}{100}$

$\displaystyle R_1=625\Omega$

When connected in series, the total resistance is

$R = R_1 + R_2=312.5\Omega+625\Omega$

$R=937.5\Omega$

The total power consumed when connecting them to a V=250 V supply is:

$\displaystyle P=\frac{250^2}{937.5}$

P = 66.67 W

4 0

3 years ago

Give an example of a situation when it would be appropriate to round a number and a situation in which it would not be appropria

anzhelika [568]

A number might be rounded when determining the number of people who will attend a basketball game. A number should not be rounded when determining the number of students who will participate in a chemistry lab. Only an estimate is needed for attendance at a basketball game because everyone will still get to see the game. In a chemistry lab the correct number of students should be known so that everybody has the proper equipment to use.

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3 years ago

An emergency first aid kit should include

AlekseyPX

I say B

hope this helps

6 0

4 years ago

In which situations is gravitational potential energy present?

Assoli18 [71]

Gravitational potential energy is associated with the shape or position of an object.
1.)When an object is placed at height h above ground, gravitational potential energy associated with it is given by,
P.E = mgh
2.)In projectile motion during upward motion, kinetic energy of object is converted into potential energy.

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3 years ago

As speed increases, how does the potential, kinetic, and total energy levels change?

Anastaziya [24]

Potential equals kenecric at the bottom so potential would also increas

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3 years ago