Answer:
Raising its temperature by
Explanation:
The specific heat capacity of a substance is defined as the amount of energy needed to raise the temperature of 1 kg of a substance by .
The specific heat capacity of a substance essentially tells us how much energy is needed to heat the substance: the larger it is, the more energy is needed. The amount of energy needed to increase the temperature of a substance is given by
where
m is the mass of the substance
Cs is the specific heat capacity
is the temperature variation of the substance
Answer:
it tells you that the speed increases until about 20 seconds then keeps a steady pace for 20 seconds then the speed drops and stops at 55 seconds in the process.
Answer:
Explanation:
Given
Man takes 3 s while running along the sidewalk
and 15 s while running opposite to sidewalk
Let the speed of man and sidewalk be v and v_0 and distance between the two endpoints of sidewalk is x
Now ----------1
Also ----------2
Divide 1 & 2