Answer:
both
Explanation:
really you don't know something from kindergarden
Explanation:
The relation between pressure and area is as follows;
Here, P is the pressure, F is the applied force and A is the area.
There is an inverse relationship between the pressure and area.
If the area is less then the pressure is more. If the area is more then the pressure is less.
It is given in the problem that It is much easier to slice a piece of pie with the edge of a sharp knife than with the edge of a pencil. The area of the edge of a pencil is more than the area of the edge of the knife. Then, less pressure is applied in case of using the edge of the pencil.
More force is required to cut the slice of pie by using pencil.
Answer:
a common temperature is reached.
Explanation:
The principle of heat transfer is that heat flows from a substance of higher temperature to that of lower temperature until when a common temperature is reached.
For ice on getting in contact with a hot body; it changes to water at 0°c utilising the latent heat of fusion. After ice has been converted to water at 0°c, water starts increasing in temperature till a common temperature is reached.
Answer:
The correct option is A
Explanation:
Buoyancy can be described as the upward force that causes an object to float on water. <u>When the buoyant force of a liquid is greater than the weight of an object, the object will move to the surface of the liquid and float (because the buoyant force would be able to push it upwards)</u>. If the buoyant force is lesser than the weight of the object, the object will sink (because the buoyant force would not be able to push the object upwards). And when the buoyant force and weight of an object cancel out, the object would be suspended at the depth that this occurs.
Thus, from the explanation above, it can be deduced that for an object to float, buoyant force must be greater than weight of the object. Thus, the correct option is A.