Venus currently has no moons.
Answer:
33 gm.
Explanation:
Heat required by coffee in evaporation = m L = m x 560 cals
Heat released by coffee in cooling = m c Δ T = 350 X 1 X 50 = 17500 cals
Heat released by glass cup = 100 x .2 x 50 = 1000 cals ( specific heat of glass is .2 cals per gram per k)
Total heat released = 18500 cals
Heat gained = heat lost
m x 560 = 18500
m = 33 gm.
Let D be the total distance (say in meters) traveled by the train and T the time (say in seconds) it takes to do so. (Assume the train moves in a straight line in only one direction.) Then the average velocity of the train as it covers this distance is
v (ave) = D/T
We're told the train can traverse a distance of D/4 in a matter of T/2 seconds if it moves at a speed of 5 m/s. This means
D/4 = (5 m/s) (T/2)
⇒ 5 m/s = 1/2 D/T
⇒ v (ave) = D/T = 10 m/s
Answer:
absorb , it absorbs it ...
Answer:
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