Answer:
Relation between initial speed of bullet and height h is given as
Explanation:
As we know that system of block and bullet swings up to height h after collision
So we have
so we have
so speed of the block + bullet just after the impact is given by above equation
Now we also know that there is no force on the system of bullet + block in the direction of motion
So we can use momentum conservation
now we have
Answer:
Electrons
Explanation:
Only Protons and Neutrons are found in the nucleus
Answer:
OXYGEN
Explanation:brainlyist me
Answer:
It takes over eight minutes
To reach Saturn, the next closest planet, would take another 36 minutes, and a further three hours or so to reach Pluto.
Explanation:
Answer:
Explanation:
The tension in the cable would be then equal to the gravitational force that keeps the Moon in circular orbit around the Earth. So, we just need to calculate the magnitude of this force, which is given by:
where:
is the gravitational constant
is the mass of the Moon
is the mass of the Earth
is the distance between the Earth and the Moon
Substituting these numbers into the formula, we find: