Answer and Explanation:
Heat is a form of energy. It is the total energy of a system associated to the the movement of its molecules or molecular motion.
It depends on various factors like enthalpy of the system, its pressure, temperature, etc.
In the case mentioned, the pace at which meat is cooked on a barbecue grill depends on the water content of the meat and the barbecue grill temperature.
The reason for the cooking speed being affected by amount of water in the is that meat heat energy required to remove the excess water for the proper cooking depends on the water content which if removed completely will result in uncooked meat.
The more the water content the more is the energy requirement to remove it.
Answer:
No
Explanation:
Unless there are other external forces, this will never be true. Because according to energy conservation, potential energy will be converted to kinetic energy as the ball falls down (so it loses height and gain speed). And vice versa, kinetic to potential when it bounces back. So the potential energy after must be the same (or smaller if losing heat to external environment), so it can only get the the same height or less, but not more.
Answer:
The force constant of the spring is 317.8 N/m.
Explanation:
Given that,
Frequency 
We need to calculate the reduced mass
Using formula of reduced mass
Where, 
= atomic mass of H
= atomic mass of I
Put the value into the formula
We need to calculate the force constant of the spring
Using formula of frequency
Put the value into the formula
Hence, The force constant of the spring is 317.8 N/m.
The first law of thermodynamics states that energy cannot be created or destroyed, but it can change from one form to another
