First let us compute for the total growth in population.
Growth = 155 million * 0.01
Growth = 1.55 million
Since there are 12 months in a year, therefore the new
jobs every month should be:
new jobs per month = 1.55 million / 12
<span>new jobs per month = 0.129 million = 129,167 </span>
Concave mirror...as it focus the light at a given point..... concave mirror is converging !!!
Answer: Electrons
Explanation: For a neutral atom the number of positively charged protons inside the nucleus must be equal to the number of electrons in the orbital shells. Both charges will cancel out having a charge of 0 which makes an atom electrically neutral.
Answer:
The speed of bullet and wooden bock coupled together, V = 22.22 m/s
Explanation:
Given that,
Mass of the bullet, m = 0.04 Kg
Mass of the wooden block, M = 0.5 Kg
The initial velocity of the bullet, u = 300 m/s
The initial velocity of the wooden block, U = 0 m/s
The final velocity of the bullet and wooden bock coupled together, V = 0 m/s
According to the conservation of linear momentum, the total momentum of the body after impact is equal to the total momentum before impact.
Therefore,
mV + MV = mu + MU
V(m+M) = mu
V = mu/(m+M)
Substituting the values in the above equation,
V = 0.04 Kg x 300 m/s / (0.04 Kg+ 0.5 Kg)
= 22.22 m/s
Hence, the speed of bullet and wooden bock coupled together, V = 22.22 m/s
Answer:
Speed = 0
Restoring force = maximum
Explanation:
Suppose this situation as a spring with a mass attached to it, that oscilates.
The force that the spring does (the restoring force in this case) is something like
F = K*L
where K is the constant of the spring, and L is the difference between the length of the spring (stretched) and the length of the spring at rest.
Then, when the harmonic oscillator is at its maximum displacement, L takes its maximum value, which means that at this point the restoring force must also have a maximum.
And for the velocity, at this point we have the maximum displacement, this means that, if the mass was moving to the right, after this point the mass stops going to the right, and then returns to the equilibrium position to the left.
Then the velocity has a change of sign, (like an object that reached its maximum height) this means that at that exact moment, the velocity must be zero.
Then:
Speed = 0
Restoring force = maximum
