Answer: option (D)
Explanation:
The potential energy of each of the students is given below as
P.E(student A) = mgh, where m = mass of student A, g is acceleration due to gravity and h = height of the high dive structure.
The mass of student B is twice as much as that of A, hence his mass is 2m and his potential energy is given below as
P.E ( student B) =2mgh = 2(mgh)
Recall that the relationship between potential energy and work done is that
Work done = - (change in potential)
For student A, work done = - mgh
For student B, work done = - 2mgh
From the equations above it can be seen that student B will do twice the work in getting to the high dive structure than student A hence validating option D.
Answer:
10,000 years
Explanation:
Given that,
Half life of the radioactive isotope, 
= 5000 years
Initial composition, 
= 16 grams
Final composition, 
= 4 grams
We know that,
Therefore, the age of the rock is 10,000 years.
Explanation:
the value of work done is zero because the man failed to move the wall through a distance.
hello! it is velocity.
i say this because, Inertia is the tendency of an object to resist changes in its state of motion. ... The state of motion of an object is defined by its velocity - the speed with a direction.
Answer:
most commonly occurs because of the frequent pumping of water from the ground.
Explanation:
