How much heat energy must be added to 52kg Of water at 68°F to raise the temperature to 212°F? The specific heat capacity for water is 4.186×10 to the third power J/kg times degrees Celsius
Answers
Answer:
The amount of energy added to rise the temperature Q = 17413.76 KJ
Explanation:
Mass of water = 52 kg
Initial temperature = 68 °F = 20° c
Final temperature = 212 °F = 100° c
Specific heat of water
Now heat transfer Q = m × C × ( -
)
⇒ Q = 52 × 4.186 × ( 100 - 20 )
⇒ Q = 17413.76 KJ
This is the amount of energy added to rise the temperature.
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Where does the material for new mountain ranges come from
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Final answer:
Both students do the same amount of work, but Ben delivers more power due to completing the work in a shorter time.
Explanation:
In this case, both Ben and Bonnie are lifting the same 50 kg barbell over their heads, but they are doing it at different rates. Bonnie lifts the barbell 10 times in one minute, which means she is doing the work over a longer period of time. Ben, on the other hand, lifts the barbell 10 times in 10 seconds, doing the work in a shorter amount of time.
The amount of work done is equal to the force exerted multiplied by the distance moved. Since the mass and distance are the same for both students, the work done is equal. However, power is defined as the rate at which work is done, which is calculated by dividing the work done by the time taken to do it. Since Ben completes the work in a shorter period of time, he delivers more power than Bonnie.
Therefore, Ben does the most work and delivers the most power.
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Answer:
Both of them
Explanation:
As the distance increases by a factor, the electric force increases by twice that factor.
As the distance increases by a factor, the electric force decreases by twice that factor.
As the distance increases by a factor, the electric force decreases by the same factor.
As the distance increases by a factor, the electric force decreases by the square of that factor.
Answers
F = 1/d^2
So,
As the distance increases by a factor, the electric force decreases by the square of that factor.
B. resistance
C. potential difference
D. induction
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, resistance, potential difference and induction all don't have the dimension of an energy that difference in electrical potential energy should have. Quite a tricky question, be careful.
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Hope this helps love!
b. frequency.
c. speed.
d. position.
Answers
Final answer:
Moving waves can be described either as a function of time or as a function of d.position.
Explanation:
Moving waves can be described either as a function of time or as a function of position.
When described as a function of time, waves are represented by their amplitude and frequency. Amplitude is the maximum displacement of the wave from its equilibrium position, while frequency is the number of complete cycles of the wave occurring in one second.
When described as a function of position, waves are represented by their wavelength and speed. Wavelength is the distance between two consecutive points in a wave that are in phase, while speed is the rate at which the wave propagates through a medium.
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