Answer:
there are uncountable sun are there but sun is star therefore there are uncountable stars are there
C.
The range of temperatures on Earth allows water to exist in all of its states.
The rate of a reaction increases if:<span>
The temperature is increased.
The concentration of a dissolved reactant is increased.
The pressure of a reacting gas is increased.
Solid reactants are broken into smaller pieces.
A catalyst is used.</span>
Answer:
4.8 watts
Explanation:
power = voltage * current = 12.0 * 0.40 = 4.8 watts
Answer:
Frictional force will be equal to 126.04 N
Explanation:
We have given mass of the bullet m = 28 gram = 0.028 kg
Initial velocity u = 55 m /sec
Width of sand = 30 cm = 0.3 m
So initial kinetic energy 
Final velocity of the bullet v = 18 m /sec
So final kinetic energy 
So change in kinetic energy = 42.35 - 4.536 = 37.814 j
From work energy theorem this change in kinetic energy will be equal to work one by frictional force
So 
