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alexandr1967 [171]
3 years ago
12

Need help with #7 and 8 ASAP

Physics
1 answer:
NeTakaya3 years ago
6 0

Answer:

a) 0.278    b) 22.2

Explanation:

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The line that is drawn perpendicular to the point at which a wave intersects a boundary is know as the
fomenos
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When the normal is drawn, the incident ray makes an angle with it known as the angle of incidence and the reflected ray makes an angle with it known as the angle of incidence. These angles are always equal.
 
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A body travels 80 meters in 8 seconds <br> at a steady speed calculate it's average speed<br>​
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Explanation:

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3 years ago
Consider the following True/False statements:
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Answer:

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Explanation:

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What is a risky behaviour​
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2 years ago
Read 2 more answers
Ali mixes 20g of Sodium Chloride in 100g of water at 15 Degree °C. Calculate the mass of the solution
Lera25 [3.4K]

Answer:

The mass of the solution is 120 g.

Explanation:

The mass of the solution is given by:

m_{sol} = m_{1} + m_{2}

Where:

m_{sol}: is the mass of the solution

m_{1}: is the mass of the solvent

m_{2}: is the mass of the solute

In the solution, the solvent is the majority compound (in mass) and the solute is the minority (in mass), so the solvent is the water and the solute is sodium chloride.          

Hence, the mass of the solution is:

m_{sol} = m_{1} + m_{2} = 100 g + 20 g = 120 g  

I hope it helps you!                  

7 0
2 years ago
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