I = Δmv = mv₁ - mv₂
m = 0.25 kg
v₁ = 5 m/s
v₂ = - 30 m/s
Answer:

Explanation:
<u><em>Given:</em></u>
Weight = W = 600 N
Acceleration due to gravity = g = 3.7 m/s²
<u><em>Required:</em></u>
Mass = m = ?
<u><em>Formula:</em></u>
W = mg
<u><em>Solution:</em></u>
For m, it'll be
=> m = W/g
=> m = 600/3.7
=> m = 162.16 kg
A: The charge of a proton is positive, a neutron is neutral and an electron is negative. The protons and neutrons are found in the nucules while the electrons orbit the nucules in their given energy levels.
The solution for this problem:
The distance in mega parsec is equal to recession velocity / H, where h is equal to 50 mega parsec.The explanation for this is:1 parsec = 2.E+05 AU, nearly. 50 mega parsec = 1. E+13 AU, nearly. 1 mega means E+06 (million).
Answer:
20kg
Explanation:
heat lost by copper=heat gained by watter