Answer:
the first one is D
Explanation:
so if the others u put are right the the second would be c
Properly input current above 40 voltage or 100 for example elecrical fan machine is used to perform a task, work output is always more than work
Find refractive index first



Now






Answer:
1000 kgm²/s, 400 J
1000 kgm²/s, 1000 J
600 J
Explanation:
m = Mass of astronauts = 100 kg
d = Diameter
r = Radius = 
v = Velocity of astronauts = 2 m/s
Angular momentum of the system is given by

The angular momentum of the system is 1000 kgm²/s
Rotational energy is given by

The rotational energy of the system is 400 J
There no external toque present so the initial and final angular momentum will be equal to the initial angular momentum 1000 kgm²/s

Energy

The new energy will be 1000 J
Work done will be the change in the kinetic energy

The work done is 600 J
Answer:
Robert Oppenheimer made the first atomic bomb.