Acceleration (magnitude anyway) = (change in speed) / (time for the change) .
Change in speed = (10 - 30) = -20 m/s
Time for the change = 4.0sec
Magnitude of acceleration = -20/4 = <em>-5 m/s² </em>
Hey
<span>.0081/300 = .000027 = 2.7 x 10^-5
</span>
Hoped I Helped
Answer:
The correct answer is - option A. The mashed potatoes will transfer heat into the gravy.
Explanation:
In this case, where Yamel heats the mashed potatoes but forgets to heat the gravy and put the cold gravy on the hot mashed potatoes. Heat always transfers from the high-temperature object to the low-temperature object. So the hot mashed potatoes will transfer the heat to the gravy according to option A. Cold is not a form of heat but the condition of absence of heat or very low temperature.
Thus, the correct answer is - option A. The mashed potatoes will transfer heat into the gravy.
13.6g
136g
Explanation:
Given parameters:
Density of mercury = 13.6g/cm³
Unknown:
Mass of :
1cm³ of mercury
10cm³ of mercury
Solution:
Density is the mass per unit volume of a substance. It is the amount of matter in a given volume.
Density = 
Since the unknown in the problem is mass;
Mass = density x volume
Mass of 1cm³ of mercury = 13.6 x 1 = 13.6g
Mass of 10cm³ of mercury = 10 x 13.6 = 136g
learn more:
Density problems brainly.com/question/3433940
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