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ziro4ka [17]
4 years ago
11

Plz help me and I will give u a brainliest in return

Physics
2 answers:
GalinKa [24]4 years ago
7 0
A galaxy is a system of millions or billions of stars, together with gas and dust, held together by gravitational attraction.

There are 100 billion galaxies

The Sun is just one of those 200 billion to 400 billion stars
vladimir1956 [14]4 years ago
4 0
A galaxy  is a system of millions to billions of stars, and is held together by gravitational attraction. There are around 2 trillion galaxies.
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The eyepiece of a light microscope has a magnification level of 10x. If you were looking at a paramecium under the lowest-power
tester [92]

Answer:

The total magnification will be 40x.

Explanation:

As we know if the magnification of the eyepiece of a microscope be m_{e} and that of the objective be m_{o}, then the total magnification is given by

m = m_{e} \times m_{o}

Given, m_{e} = 10x and m_{o}  = 4x

Therefore total magnification is m = 10 \times 4 = 40x

4 0
3 years ago
Question: A 12 volt car battery is connected to a 3 ohm brake light. What is the current carrying energy to the lights?
Natali [406]

Answer:

4 A

Explanation:

V = IR, where V=voltage, I=current, R=resistance. This is Ohm's Law. (remember that for units V = volts, Ω = ohms, A = amperes.)

V = IR

12 V = I * 3 Ω

12/3 = I

<u>I = 4 A</u>

8 0
4 years ago
Convert the number from scientific into standard notation: 5.9 x 10-2
guapka [62]
Move the decimal point to:
Left : (if the exponent of ten is a negative number -) ... OUR CASE HERE (-2)
or to
Right : (if the exponent is positive +).

You should move the point as many times as the exponent indicates.
Do not write the power of ten anymore.

So, standard form is:
Two points to the left {Exponent of Ten is Negative (-2)}
0.059 ... (without the 10)
6 0
3 years ago
A unit for measuring frequency is? ohm watt ampere hertz
pishuonlain [190]

"Frequency" is a measure of how frequent something is.

Its unit is the "Hertz".

1 Hertz  =  1 per second

8 0
3 years ago
When a pulse is palpated and counted which pressure would be characteristic?
blagie [28]
When a pulse is palpated and counted, the pressure that would be a characteristic is : Sytolic
When your pulse is palpated and counted, you would feel the maximum pressure of your ventricle that you used to force the blood to travel throughout your body.
6 0
3 years ago
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