Answer:
25J
Explanation:
power = work done ÷ time taken.
and work done = force applied × distance covered.
according to the question, the athlete lifts the weight of 100N upto 5m therefore;
100N × 5m = 500N/m
then onwards,
the work done (500 N/m) should be divided by the time taken to calculate the power,
500 ÷ 20s = 25J
is your answer.
hope this helped. :)
The density of an object remains same irrespective of its shape, size and quantity.
Explanation:
Density is an intensive property. This means that regardless of the object's shape, size, or quantity, the density of that substance will always be the same. Even if you cut the object into a million pieces, they would still each have the same density. It is because density in an intensive property of matter.
please mark brainliest
The question is incomplete. The complete question is :
Assume that the energy lost was entirely due to friction and that the total length of the PVC pipe is 1 meter. Use this length to compute the average force of friction (for this calculation, you may neglect uncertainties).
Mass of the ball : 16.3 g
Predicted range : 0.3503 m
Actual range : 1.09 m
Solution :
Given that :
The predicted range is 0.3503 m
Time of the fall is :
...........(i)
...........(ii)
Dividing the equation (ii) by (i)
∴ 
Now loss of energy = change in the kinetic energy
![$W=\frac{1}{2} m [v_0^2-v_1^2]$](https://tex.z-dn.net/?f=%24W%3D%5Cfrac%7B1%7D%7B2%7D%20m%20%5Bv_0%5E2-v_1%5E2%5D%24)
![$W=\frac{1}{2} \times (16.3 \times 10^{-3}) \times [v_0^2-\left(\frac{v_0}{3.11}\right)^2]$](https://tex.z-dn.net/?f=%24W%3D%5Cfrac%7B1%7D%7B2%7D%20%5Ctimes%20%2816.3%20%5Ctimes%2010%5E%7B-3%7D%29%20%5Ctimes%20%5Bv_0%5E2-%5Cleft%28%5Cfrac%7Bv_0%7D%7B3.11%7D%5Cright%29%5E2%5D%24)
If f is average friction force, then
(f)(L) = W
(f) (1) = 
(f) =
Answer:
Explanation:
Traumatic fractures (also called acute fractures) are caused by a direct blow or impact, such as seriously stubbing your toe. Traumatic fractures can be displaced or nondisplaced. If the fracture is displaced, the bone is broken in such a way that it has changed in position (malpositioned).
Answer:
The large diversity of shapes of biological molecules is possible because of the extensive presence of carbon in the molecules.The main classes of biological molecules that are very important for all living things are carbohydrates, lipids, proteins, and nucleic acids.
