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White raven [17]
3 years ago
11

What is the author's MAIN purpose for including information about viruses? D to suggest that it could be dangerous for explorers

to bring home life from other planets B to provide an example that illustrates the difficulty of defining life in some cases on Earth С to demonstrate the need for extra protective gear when explorers go into space D to highlight the differences between natural life and artificial life mixed in a lab Back Submit​
Physics
1 answer:
yan [13]3 years ago
5 0

Answer:

B

Explanation:

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A liquid with a mass of 75 g is at its boiling point. It completely boils off when AQ = 15000000) of heat energy is added to it.
aev [14]

Answer:

2 × 10⁸J/kg

Explanation:

Specific latent heat of vaporization (steam)  is the quantity of heat required or needed to change a unit of mass of liquid to gaseous state at constant temperature (boiling point) and pressure.

It can be calculated mathematically using,

Q = mL

Where,  Q = quantity of heat

m= mass in kg

L = specific latent heat (J/kg)

Therefore,from the question

Q= 15000000J

mass (m)  = 75g = 75/1000 kg = 0.075kg

Q = mL

L = Q/m

L = 15000000  ÷ 0.075

L= 200000000J/kg

L = 2 × 10⁸J/kg

I hope this was helpful, please mark as brainliest

8 0
3 years ago
On a speed-time graph, a horizontal line shows the change in speed is ____.
spayn [35]

On a speed/time graph, the height of the line at any point
shows the speed at that moment.  If the line is horizontal,
then its height isn't changing, meaning that the speed isn't
changing.  It's constant.  The change is zero, until the line
starts rising or falling.

4 0
4 years ago
Which is an electromagnetic wave A. The waves that heat a cup of water in a microwave oven B. A flag waving in the wind C. Turni
viva [34]

Answer:

The answer would be A. The waves that heat a cup of water in a microwave oven

7 0
3 years ago
A train travels 400km in 2 hours. what is its velocity in km/hr?
Alex_Xolod [135]
Velocity = displacement / time
v = 400 / 2
v = 200 km/h

In short, Your Answer would be 200 km/h

Hope this helps!
7 0
4 years ago
Read 2 more answers
When nuclear fission occurs, some mass is lost. Where does the mass go?
Hoochie [10]
The situation when nuclear fission occurs, some mass is lost is also called the mass defect and as a result  the matter turns into energy. If you want to know where the mass does go  Albert Einstein will be your helping hand :  E = mc^2. Using this formulae you will solve the task and find out the  direction of mass.
3 0
3 years ago
Read 2 more answers
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