Conveniently, some scientists have already figured out how much heat energy it takes to increase the temperature of one gram of water by exactly 1 degree Celsius. That is called the specific heat of water and it's value is 4.184J/g.
So simply multiply the specific heat with the number of grams and the number of degrees C like this:
When only ________ acts on an object's mechanical energy is conserved.
<u>Answer</u><u>:</u>
Momentum
FORCE ACTING ON THE BODY , F = 200N
AREA ON WHICH THE FORCE IS ACTING , A = 0.05 CM²
= 0.05*(10⁻²)
= 0.05*10⁻² M²
TO CONVERT CM TO M * BY 10⁻²
PRESSURE = FORCE / AREA
PRESSURE = 200/0.05*10⁻⁴
= 200*10⁴/0.05
= 200*10⁴*10²/5
= 20*10⁵/5
= 4*10⁵ N/M².
HOPE THIS HELPS.
Answer:
Workdone = 1250Nm
Explanation:
<u>Given the following data;</u>
Force, F = 500N
Distance, d = 2.5m
Workdone is given by the formula;
Substituting into the equation, we have
Workdone = 1250Nm
Therefore, the actual work done by the worker is 1250 Newton-meter.
2.496 HZ is the resistance change the resonant frequency.
Given, Supply frequency, f = 60 12
number of poles, P = 4
Full load speed, Ne= 1725 rpm
Synchronous speed; No= 1201= 120X60 = 1800 rpm
P
4
We know the formula for Full load-speed
Ne = N's (1 - Sf)
where se = full load rotor ship
Ne = 1 - SP
SQ = 1- Ne = 1- 1725 = 0.0416 DY 4-16%
1800
SQ= 4. 16 % or 0.0416
Frequency of rotor, fy= Sgif = (0.0416) ( 60 ) = 2.496 Hz
fr = 2.496 HZ
Learn more about Frequency here: brainly.com/question/16148316
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