Answer:
31,360J
Explanation:
Gravitation potential energy (gpe) is calculated from the formula mgh.
That implies, gpe = mgh
Therefore substituting the values of m and h as given in the question, knowing in mine that the acceleration due to gravity( g) is 9.8 N/kg, will give 31,360J
Never forget to put your SI units, because even if your answer is numerical correct, it will be incorrect because it represents no physical quantity.
Answer:
Science is changing because little by little scientists descover new things.
Explanation:
Discovery
Hope this helps:)
Complete Question
The complete question is shown on the first uploaded image
Answer:
The value of 
and 
Explanation:
Considering the diagram,
Taking moment about the pivot , we have
=>
Generally given that the bar is at equilibrium then the upward forces is equal to the down ward force
So
=> 
=>
Answer:
Time, t = 0.57 hours
Explanation:
It is given that,
Speed of the school bus, v = 35 mi/hr
Distance covered by the bus, d = 20 miles
We need to find the time taken by the bus to get to school. Time taken by the bus is given by :
t = 0.57 hours
So, the time taken by the bus to reach school is 0.57 hours. Hence, this is the required solution.
