The transfer of energy that occurs when a force is applied over a distance is WORK.
Hope this helps!
I think a is the correct answer
Answer
Q=4479.8 cal
Procedure
To solve the problem you will need to use the specific heat formula

Where;
Q=heat energy
m=mass
c=specific heat capacity
ΔT=change in temperature
Assuming that the heat released from the cracker of unknown material is equal to the heat absorbed by the water, then we can use the c and m for water in our calculations.

Substituting the values in our equation we have

Finally, transform the J to cal
Answer:
In a parallel circuit, current divides through resistors and current might be different depending upon the resistor and all resistors have the same potential difference. Therefore, if a parallel resistor was removed then the total resistance of the circuit will increase.
Answer:
1.88 x 10^5
Explanation:
You have to round because all of the numbers in 187515.4207 are significant
Round to: 188000
Put in scientific notation:
1.88 x 10^5