Answer:d
Explanation:
Given systems are state of matter and do not contain any heat instead Heat is required to change Phase or raise the temperature of the particular system.
For example 600 kg of ice at
Heat Required to convert it to water at is
Where L=latent heat of Fusion
Answer: (2) 108 C
Explanation:
Electric charge of 1 coulomb has said to have passed when a current of 1 Ampere is passed for 1 second.
Q= charge in coloumb = ?
I = current in amperes = 0.120 A
t= time in seconds = 900 sec
Answer:
False
Explanation:
Acceleration is the rate of change of velocity
Acceleration the negative acceleration means the speed of the object decreases
Negative acceleration does not mean that velocity will also negative
For example if the the speed of the object decreases from 20 m/sec to 15 m/sec in 5 sec then acceleration will be here acceleration is negative but velocity is positive