For phyics again , pls !!!

1 answer:

3 0

Answer: same

Explanation: They both weigh a kilogram and there is no friction

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11111nata11111 [884]

<u>Thermal energy</u><u> from the room-temperature water will continuously flow to the boiling water.</u>

The second law states, in a straightforward manner, that heat cannot naturally go "uphill."
When a pan of boiling water and a pan of ice are in touch, the hot water cools and the ice melts and warms up.

<h3>THE FIRST LAW OF THERMODYNAMICS</h3>

Adiabatic Process - is a procedure that is carried out without the system's heat content changing.
Water is heated to a temperature of 1000C during the boiling process, making it an isothermal process. As steam, the excess heat leaves the system.

Learn more about first law of thermodynamics brainly.com/question/3808473

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8 0

2 years ago

Zinaida [17]

Answer:

v = 6.3 m/s

Explanation:

Since no significant air resistance exists, total mechanical energy must be kept constant at any time.
At the top of the cliff, all the energy is gravitational potential energy, as follows:

$E_{i} = K_{i} + U_{i} = 0 + U_{i} (1)$

If we choose the ground level as our zero reference level for the gravitational potential energy, Ui is simply:
Ui = m*g*h (1)
At any height, the sum of the kinetic and the gravitational potential energy must be equal to (1).
We know from the question, that at the point of interest, both types of energies must be equal each other, so we can write the following expression from (1):

$m*g* h = 2*\frac{1}{2}*m*v^{2} (2)$