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Anarel [89]
3 years ago
14

Please fill in question 3 (i) fast please science homework

Physics
1 answer:
Kitty [74]3 years ago
6 0
The answers are 3.3kWh, 1.2kWh, and 120kWh.

Multiply the amount of kW used per hour by the amount of time it was powered and you receive your answer.
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a typical top fuel dragstar has a mass of 900 kg what is the force applied to a dragstar by the static friction of the strip the
AnnZ [28]
Wonderful.
You've given us ' m '.
Now, if we only had ' a ', we could come back at you with ' f '.
6 0
3 years ago
Which statements are part of the safety protocol for this lab experiment? Check all that apply.
tekilochka [14]

Answer:

Always wear safety goggles when performing an experiment.

Use caution when dropping objects and/or launching them into the air.

Use only the materials that your teacher provides or approves.

Check the soda bottle and its cap for cracks and chips prior to use.

Report all accidents—no matter how big or small—to your teacher.

8 0
3 years ago
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The world record for a woman running a marathon is approximately 2.25 hours. If a marathon's distance is 26.2 miles (42164.81 me
netineya [11]

Answer:

11.6mph South East

Explanation:

Given parameters:

Time = 2.25hrs

Displacement  = 26.2miles south east

Unknown:

Velocity = ?

Solution:

Velocity is the displacement divided by the time taken. It is a vector quantity with both magnitude and direction.

 Now;

       Velocity  = \frac{displacement}{time taken}

       Velocity  = \frac{26.2}{2.25}   = 11.6mph South East

8 0
3 years ago
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Which of the following represents a joule?
Andru [333]

Answer:

d. N*m

Explanation:

Workdone which is measured in Joules is calculated using the formula;

Workdone = force * distance

Where;

Force is measured in Newton

Distance is measured in meters.

Therefore, workdone also has the measurement of Newton-meters.

5 0
3 years ago
Explain why adding oil to the moving parts of a machine can increase its efficiency
Vinvika [58]
Adding oil to the moving parts of machines can do that because it makes it smoother and takes the rust off of it.
6 0
3 years ago
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