There is a probability that heat will flow from warmer to cooler substances,
and a probability that heat will flow from cooler to warmer substances.
The probability that heat will flow from a cooler to a warmer substance is
so small that it is ignored. It's accepted as a 'law' of thermodynamics that
heat always flows from higher temperature to lower temperature.
The missing part of the incomplete question is given below:
Which important step of scientific design is Shameka conducting?
repetition
replication
verification of results
using controlled variables
Answer:
Verification of results
Explanation:
The way toward gathering five examples of water from various sources is conveyed to confirm the outcome. By gathering water from five distinct areas of a similar source the analyst can genuinely find out the nature of the water in her region of remain.
On the off chance that after examples are tried it is found the water isn't sound, the outcomes would be acknowledged as it has been appropriately checked and a proper move would be made.
Thus, the correct answer is - verification of results
Answer:
Explanation:
Given
Pivot is at h=0.76 L
Where L is the length of String
Conserving Energy at A and B
where u=velocity at bottom
After coming at bottom the ball completes the circle with radius r=L-0.76 L
Suppose v is the velocity at the top
Conserving Energy at B and C
Eliminating m
Answer:
Initial height L = 323.3m
Explanation:
Given:
Change in Length ∆L = 19.4cm 0.194m
Change in temperature ∆T = 41 -(-9) = 50°C
Coefficient of linear Thermal expansion of steel k = 12 × 10^-6 m/mK
Using the formula for linear expansion:
∆L = Lk∆T
L = ∆L/k∆T ....1
Substituting the given values into equation 1
L = 0.194/(12 × 10^-6 × 50)
Initial height L = 323.3m
