When a person is making cardiovascular gains through aerobic activity they are increasing the amount of oxygen to the heart and lungs. This keeps the heart and lungs of a person very healthy. It decreases the chance of heart diseases.
Explanation:
We have,
Mass of the running back, m = 82 kg
Initial speed of the running back, u = +5.6 m/s
Final speed of the running back, v = -2.5 m/s
It is required to find the momentum change of the running back. For this we will subtract final momentum to the initial momentum. So,
So, the magnitude of the change in momentum of the running back is 664.2 m/s in west direction.
The answer is B. surface water can seep downward to become groundwater
Answer:
It will stretch by 2ΔL
Explanation:
The young modulus for the metals in both cases is the same as it is a property of the metal.
Y1 = Y2
Tensile force and area in both cases are the same.
Let the unknown increase in length be x.
F/A × L/ΔL = F/A × 2L/x
By canceling out like terms and rearranging, x = 2ΔL.
Answer:
Remember that the nucleus of an athom is neutral, which means protons, neutrons and electrons have the same and opposite charge so that the net electircal field is zero. In that case, we say the nucleus is estable.
Now, to mantain the equilibrium of the given element, we need an electrical field equal in magintude +2e with opposite direction, that will balance it.