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Karo-lina-s [1.5K]
3 years ago
13

Most galaxies are in ________, which contain hundreds or thousands of galaxies.

Physics
2 answers:
Gala2k [10]3 years ago
8 0
The answer is probably galaxy clusters.
Yanka [14]3 years ago
4 0
The answer is: "galaxy clusters" .
___________________________________

<span>Most galaxies are in <u> galaxy clusters </u> , which contain hundreds or thousands of galaxies.
_______________________________________________________</span>
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calculate how much charge passes through the LED in 1 hour if the current flowing in the circuit below is 350mA
Morgarella [4.7K]

Given the the current flowing in the circuit and the elapsed time, the charge that passes through the LED is 1260 Coulombs.

<h3>What is Current?</h3>

Current is simply the rate of flow of charged particles i.e electrons caused by EMF or voltage.

If a charge passes through the cross-section of a conductor in a given time, the current I is expressed as;

I = Q/t

Where Q is the charge and t is time elapsed.

Given the data in the question;

  • Time elapsed t = 1hr = 3600s
  • Current I = 350mA = 0.35A
  • Charge Q = ?

We substitute our given values into the expression above to determine the charge.

I = Q/t

Q = I × t

Q = 0.35A × 3600s

Q = 1260C

Therefore,  given the the current flowing in the circuit and the elapsed time, the charge that passes through the LED is 1260 Coulombs.

Learn more about current here: brainly.com/question/3192435

#SPJ1

3 0
3 years ago
In a thermostat, what property of the bimetallic coil allows it to contract and expand? The two metals absorb different amounts
madam [21]
Hello!

In a thermostat, the property of the bimetallic coil that allows it to contract and expand is that The two metals absorb different amounts of thermal energy. 

This bimetallic coil is used to transform thermal energy into mechanical movement. Two metals with different thermal expansivity are joined together parallelly and the changes of temperature cause bending in different directions depending on if the temperature is rising or descending. 

The differences in the thermal energy absorption of the two metals are the basis for the mechanism of this device. 
3 0
4 years ago
Read 2 more answers
Derive an expression to show tha v=✓2Gr​
Elza [17]

Answer:

From this equation, it can be said that the escape velocity depends on the radius of the planet and the mass of the planet only and not on the mass of the body. Escape Velocity of Earth= 11.2 km/s. This was the derivation of the escape velocity of earth or any other planet.

Explanation:

8 0
2 years ago
What velocity in km/hr would it take to accelerate a 2 kg object to the same momentum of a 1500 kg object with a velocity of 1.6
Lynna [10]

Answer:

v = 4374 Km/h

Explanation:

Given that,

Mass of the smaller object, m = 2 Kg

Mass of the bigger object, M = 1500 Kg

Velocity of the bigger object, V = 1.62 m/s

Velocity of the smaller object, v = ?

The product of its mass and velocity of a body is equal to its linear momentum. It is given by the formula

                                p = mv  Kg m/s

To find the momentum of the bigger object, substitute M and V in the above equation

                                p = 1500 Kg x 1.62 m/s

                                   = 2430 Kg m/s

The velocity imparted to the small body to attain this momentum is given by the relation

                               v = p/m  m/s

                                   = 2430 Kg m/s  /  2 Kg

                                   = 1215 m/s

By converting the velocity to Km/h

                                v = 4374 km/h

Hence, the velocity of the 2 Kg object is v = 4374 km/h

6 0
3 years ago
All ecosystems need<br> and<br> in order to survive.
Triss [41]

Answer:

An ecosystem is a community of living things and their non-living environment, and may be as large as a desert or as small as a puddle. An ecosystem must contain producers, consumers, decomposers, and dead and inorganic matter. All ecosystems require energy from an external source – this is usually the sun.

Explanation:

4 0
3 years ago
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