Answer:
4) C.mass
5) C. Potential Energy
Explanation:
4) Kinetic energy (KE) of an object is the energy that it possesses due to its motion. If a mass is in motion ,it has a kinetic energy .
By definition
what matters in Kinetic energy is the mass and the velocity only .
there fore the answer is
C.mass
5) Potential energy is the energy stored in an object, due to the object's position or arrangement.
By definition
in potential energy the height matters.higher the height , higher the energy
therefore the answer is
C.Potential Energy
Explanation:
Given that,
The distance between two conducting plates is 7 cm.
The difference in potential between the plates is 560 V.
To find,
We need to tell is the positive or the negative plate at the higher potential?
Solution,
We know that the electric potential is defined as the work done in moving a test charge from one position to another. So, the positive plate is always at the higher potential.
Hence, this is the required solution.
If ball 1 has a higher speed than ball 2, then ball 1 has higher kinetic energy than ball 2, since kinetic energy is the energy of movement.
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Answer:
we can conclude that mass of air that has entered the tank is 7.80 kg.
Explanation:
given data
volume = 1.85 m³
density 1 = 1.18 kg/m³
density 2 = 5.30 kg/m³
solution
we know that density is the mass present in per unit volume so that is
mass = density × volume ........................1
here density is change so put here value in equation 1 we get
mass = ( 5.30 - 1.18 ) kg/m³ × 1.85 m³
solve it we get
mass = 7.807 kg
so we can conclude that mass of air that has entered the tank is 7.80 kg.