The answer to this question is A - 25 N
The initial speed of the ball is 5 m/s
Explanation:
We can solve the problem by using the law of conservation of momentum: in absence of external forces, the total momentum of the skater + ball system must be conserved. So we can write:
![p_i = p_f](https://tex.z-dn.net/?f=p_i%20%3D%20p_f)
![mu=(m+M)V](https://tex.z-dn.net/?f=mu%3D%28m%2BM%29V)
where:
m = 5 kg is the mass of the ball
u is the initial velocity of the ball
M = 45 kg is the mass of the ice skater
V = 0.5 m/s is the final velocity of the skater+ball together
Solving for u, we can find the initial velocity of the ball:
![u=\frac{m+M}{m}V=\frac{5+45}{5}(0.5)=5 m/s](https://tex.z-dn.net/?f=u%3D%5Cfrac%7Bm%2BM%7D%7Bm%7DV%3D%5Cfrac%7B5%2B45%7D%7B5%7D%280.5%29%3D5%20m%2Fs)
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Answer:
It has only 1 electron in its valence shell and if that electron is removed it will acquire noble gas configuration
Explanation:
Sodium forms an ion of charge +1 as in its ionic state it has inert gas configuration
It forms an ion of charge +1 when the valence shell electron is removed to gain the noble gas configuration and the electrons can be removed mostly from its valence shell because inner shell electrons will be tightly bounded to the nucleus of the atom and it requires high energy to remove the electron present in the inner shell when compared to the valence shell (outermost shell)
The path difference is 1.57 × 10⁻⁶ m
Distance is the amount of space between things. From distance, it is the hard to tell if someone's wearing the a vampire costume abd just a chic black outfit.
For constructive interference thai is formation of bright fringe through a diffraction grating is given by:
d sin θ = n λ
here, d is the distance between slits.
θ is the angle of diffraction
n is the order of fringe
and λ is the path difference.
λ = (d sin θ)/ n = (0.60 *10 ⁻³m) (sin 0.30°) ÷ 2 = 1.57 * 10⁻⁶ m
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Robert threw the Frisbee at 10 m/s.
This is because the formula for average speed is: v = d/t
v = Average speed or average velocity
d = Distance
t = Time
so the formula would say v = 50m/5s; v = 10m/s