Answer : The correct option is, (D) 278 K
Explanation :
We are given temperature 
.
Now the conversion factor used for the temperature is,
where, K is kelvin and 
is Celsius.
Now put the value of temperature, we get
Therefore, the temperature 278 K is equal to the
The answer here is <span>The government is expansive</span>
Answer:
A person climbs a set of stairs
Explanation:
Potential energy is said to be possessed by an object due to its position. As the height from the ground level increase, the potential energy increases. It is calculated by the below formula as :
P = mgh
Out of the given options, the option that illustrates an increase in potential energy is option (b) i.e. a person climbs a set of stairs. As he steps one stair, its position from ground increases. It means its potential energy increases.
Answer:
When we see a region of a planet that is not as heavily cratered as other regions, it means that the surface of that region is younger.
Explanation:
There are a number of processes that affect planetary surfaces like erosion, volcanism, plate tectonics and the amount of craters by impact of meteorites.
The density of craters in a given region suggests the age of the surface. If the surface is saturated by craters then is likely very old because a long time should have passed for the planet to be hit by so many meteorites. If there are very few craters this may indicate that the surface is quite young, because the other processes described above wouldn't have had enough time to erase them. In any case we need to study the change of the cratering rate over time to determine the age of a given surface.
