Answer:
0.255 meters
Explanation:
cause formula to calculate work done against gravity is mgh where m refers mass g refers acceleration due to gravity and h refers height
<h2>Conduction, Convection, and Radiation</h2>
Explanation:
- The transfer of heat generally depends on the difference in the temperature in the surroundings.
The best methods for the transfer of heat are conduction convection, radiation and sometimes evaporation also.
- Conduction: This is the transfer of heat through the system that is solid.
- Convection: Convection is the process in which warm surfaces of a liquid or gas rises to cooler surfaces in the liquid or gas that is the transfer of heat from the surface. Natural convection occurs as air is heated: it expands, rises, and is replaced by cooler air.
- Radiation: This is a process where energy is radiated among the surroundings in the form of electromagnetic radiation.
- Evaporation: The latent heat of a liquid is used to transfer heat by absorbing the energy needed to evaporate that liquid. The heat absorbed is released by condensing the liquid outside the enclosure.
Answer:
Galileo Galilei is know as he father of Modern physics
Explanation:
hope it help
Answer:
22510.8J
Explanation:
Given parameters:
Mass of lead = 4.68kg
Initial temperature = 25°C
Final temperature = 62°C
Unknown:
The heat needed to cause this temperature change = ?
Solution:
To solve this problem, we use the expression below:
H = m c Ф
H is the quantity of heat
m is the mass
c is the specific heat capacity
Ф is the temperature change
So;
Specific heat capacity of lead = 130J/kg°C
Insert the parameters and solve;
H = 4.68 x 130 x (62 - 25) = 22510.8J
