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suter [353]
3 years ago
9

What type of boat requires navigation lights?

Physics
1 answer:
oksian1 [2.3K]3 years ago
4 0
All the boats that are operating from sunset to sunrise must have navigation lights.
Navigation lights are also for our safety, and it should be powered on after sunset to sunrise. Because at night due to darkness, if it is on, it is an indication that boat is there. Some of the boats which should have navigation lights are sailboats, powerboats, rowboats etc.
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pogonyaev
Cells undergo cell division ( creates more cells to replace dead cells )
8 0
3 years ago
The sun, like all stars, releases energy through nuclear fusion. In this problem, you will find the total number of fusion react
sattari [20]

Answer:

Explanation:

DetaM=4 x 1.02875 - 4.002603

DetaM= 0.028697u

Using E= mc²

= 0.028697 x 1.49x*10^-10

= 4.2x10^-12J

4 0
3 years ago
Explain why engineers leave a gap in a concrete bridge (answer must relate to density)
seraphim [82]
<span>Different materials expand and contract at different rates based on temperature. Just like if you leave a plastic bottle full of water in a freezer it will burst, but if you leave it partially full no problem.....Ok?Expansion joints do the same for bridges. There is a gap to allow for temperature related expansions and contractions. Sometimes you drive over bridges and roadways where this movement is constricted and you might notice a bumpy ride. Engineers can predict the variation of structural length based on span lengths and leave the necessary gaps.....btw, NICE QUESTION:)</span>


6 0
3 years ago
PLEASE HELP ME IF YOU KNOW STUFF ABOUT ENERGY TYSM
Tomtit [17]

Answer:

  1. Kinetic Energy
  2. Potential energy
5 0
3 years ago
Read 2 more answers
How much energy (in Joules) is released when 12.0 g of water cools from 20.0 °C to 11.0 °C? This is a grade 10 question from the
KATRIN_1 [288]

Answer: - 452.088joule

Explanation:

Given the following :

Mass of water = 12g

Change in temperature(Dt) = (11 - 20)°C = - 9°C

Specific heats capacity of water(c) = 4.186j/g°C

Q = mcDt

Where Q = quantity of heat

Q = 12g × 4.186j/g°C × - 9°C

Q = - 452.088joule

7 0
3 years ago
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