Answer:
This does not violate the conservation of energy.
Explanation:
This does not violate the conservation of energy because the hot body gives energy in the form of heat to the colder body, this second absorbs energy. This will be the case until both bodies reach the same temperature, reaching thermal equilibrium and reducing the transfer of thermal energy. In this way the energy was only transferred from one body to another but the total energy of the system (body 1 plus body 2) will be the same as in the beginning, respecting the principle of conservation of energy or also called the first principle of thermodynamics .
The part of physics that studies these processes is in turn called heat transfer or heat transfer or thermal transfer. Heat transfer occurs whenever there is a thermal gradient or when two systems with different temperatures come into contact. The process persists until thermal equilibrium is reached, that is, until temperatures are equalized. When there is a temperature difference between two objects or regions close enough, the heat transfer cannot be stopped, it can only be slowed down.
Answer:
a) R `= 3.5 ohms
b) energy decipated = 560J
Explanation:
V = I . R
R = V / I
R `= 70 / 20
R `= 3.5 ohms
2)energy decipated = 1/2ij²
energy decipated = 1/2 x 2.8 x (20)²
energy decipated = 560J
Transverse wave as the wave is going up and down no compressions
Answer:
(10 m/s²) (50 m) = (10 m/s²) H + ½ (4 m/s)²
Explanation:
Initially, the orange has only gravitational potential energy.
As the orange falls, it has a combination of potential energy and kinetic energy.
Energy is conserved, so initial energy = final energy:
PE₀ = PE + KE
mgH₀ = mgH + ½ mv²
gH₀ = gH + ½ v²
Plugging in values:
(10 m/s²) (50 m) = (10 m/s²) H + ½ (4 m/s)²
Answer:
The car would travel after applying brakes is, d = 14.53 m
Explanation:
Given that,
The time taken to apply brakes fully is, t = 0.5 s
The velocity of the car, v = 29.06 m/s
The distance traveled by the car in 0.5 s, d = ?
The relation between the velocity, displacement, and time is given by the formula
d = v x t m
Substituting the values in the above equation,
d = 29.06 m/s x 0.5 s
= 14.53 m
Therefore, the car would travel after applying brakes is, d = 14.53 m
