Answer:
Efficiency = 80%
Explanation:
Given the following data;
Work output = 240 N
Work Input = 300 N
To find the mechanical efficiency of a machine;
Substituting into the equation, we have;
Efficiency = 80%
Therefore, the mechanical efficiency of the machine is 80 percent.
Speed v = distance travelled / time taken
v = d / t
v = 540 / 60h
v = 9 km /h
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2. Saving endangered wildlife
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3. Adopting a smarter lifestyle
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- electric cars which are three times more conventional vehicles .
Hope this helps :)
Answer:
Explanation:
Given data
To find
Magnitude of the net magnetic field B
Solution
The magnitude of the net magnetic field can be find as:
