Answer:
Explanation:
Given
Power output
efficiency
Engine expels
Efficiency is given by
where =Heat supplied
Work Produced by cycle
Time interval for which power is supplied
Answer:
D
Explanation:
Moji could've chosen hardness tests that were not reliable.
The net force on the sled is 300 N
Explanation:
First of all, we start by finding the acceleration of the bobsled, by using the suvat equation:
where:
v = 6.0 m/s is the final velocity of the sled
u = 0 is the initial velocity
a is the acceleration
s = 4.5 m is the displacement of the sled
Solving for a, we find
Now we can find the net force on the sled by using Newton's second law:
F = ma
where
F is the net force
m = 75 kg is the mass of the sled
is the acceleration
Solving the equation, we find the net force:
Learn more about acceleration and Newton laws here:
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Answer:
40.68 trillion kilometers.
Explanation:
Multiply 4.3 × 9.46, the product which you get is your answer in trillion km