Answer:
Tension.
Explanation:
The tighter a string is, the more tension is applied to it; the more loose a string is, less tension is applied to it.
Therefore, when you adjust the tightness of a string you are tackling with it's tension.
Hope it helped,
BiologiaMagister
The complete question is;
James Joule (after whom the unit of energy is named) claimed that the water at the bottom of Niagara Falls should be warmer than the water at the top, 51 m above the bottom. He reasoned that the falling water would transform its gravitational potential energy at the top into thermal energy at the bottom, where turbulence brings the water almost to a halt. If this transformation is the only process occurring, how much warmer will the water at the bottom be?
Answer:
Water becomes warmer by a temperature of ΔT = 0.119 K
Explanation:
If we assume that gravitational kinetic energy will be converyrf into thermal enrgy, we will have;
Q = U
So, m•c_w•ΔT = mgh
Where;
c_w is specific heat capacity of water with a value of 4184 J/Kg.K
ΔT is change in temperature indicating how warmer the water will be. Thus making ΔT the subject, we have;
ΔT = gh/c_w
So, ΔT = 9.8 x 51/4184 = 0.119 K
Answer:
Acceleration of the elevator = 13.242 m/s2.
Explanation:
Force is defined as the push or pull on an object with mass in kg that causes a change velocity. Force as a vector means it has both magnitude and direction.
Mathematically,
F = M*a
Where
F = force in Newton.
M = mass of the object in kg.
a = acceleration due to gravity in 9.81 m/s2.
Acceleration of the elevator = 821/62
= 13.242 m/s2.
Answer:
1 is a great answer for this question
The appropriate response is hydrogen ions. It entirely, the core of a hydrogen particle isolated from its going with an electron. The hydrogen core is comprised of a molecule conveying a unit positive electric charge, called a proton.
I hope the answer will help you.