I may be wrong, but I really don't think there's any such thing as
negative or positive heat. Heat is one of the forms of energy, so
it can never pop up out of nowhere, and it can never disappear.
Like all energy, heat just moves from place to place. If it flows
out of one thing, then it flows into something else. So I don't think
it's ever correct to say that the heat that's over there, or the heat
that's moving from here to there, is positive or negative.
Answer:
The velocity at that time would be . The velocity of this particle is continuously changing.
Explanation:
Differentiate the expression for position with respect to time to find an expression for velocity.
.
Hence, at , velocity would be .
Since velocity changes with time , the velocity of this particle is continuously changing.
Well, one can take 13 and subtract 56 which is -43.
One can also add 56 to 13 to equal 69.
C is the answer.
Answer:
42cm
Explanation:
To find the volume of a box, you simply multiply the length, by the width, then by the heigh!
2cm x 7cm x 3cm = 42cm
I hope my answer helped you! :)