Answer:
Explanation:
a.) hypermetropia is the reason for his problem
b.)Image is formed farther from the near point
c.) defect is corrected by convex lens
Answer: 5 km/hr
Explanation:
speed= distance divided by time
20/4
= 5 km/hr
Sugar dissolves faster in hot water because, the higher the temperature the faster the molecules move.
Answer:
Gravity
Explanation:
When the ball is falling to the ground, it is already detached from the table, so the table does not exert any force on it.
Gravity is always present, therefore it is acting on the ball (acting downward), so it must be included into the free-body diagram. Apart from that, there are no other forces acting on the ball (if we neglect air resistance, which is negligible, and it is not mentioned in the options given), therefore the only force which has to be included in the diagram is gravity.
<h2><u>ANSWER</u></h2>
Two isotopes of helium ( helium 3 and helium 4) show superfluidity whem they are liquified by cooling to a very low specific temperature. One isotope of rubidium and lithium posses this property at low temperature.
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