Which location focuses its use on a nonrenewable energy source? a wind mill farm a natural gas power plant a fruit orchard a com
2 answers:
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Answer:
50mph,60mph
Explanation:
Let speed of southbound train=x mph
Speed of northbound train,y=x+16 mph
Distance between two trains after 1.5 hour,174 miles.
We have to find the speed of two trains.
Distance=
Using the formula
Explanation:
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Answer:
Explanation:
Given:
- mass of car,
- distance of skidding after the application of brakes,
- coefficient of kinetic friction,
<u>So, the energy dissipated during the skidding of car:</u>
<em>Frictional force:</em>
where N = normal reaction by ground on the car
<em>Now from the work-energy equivalence:</em>
is the dissipated energy.