Answer:
D) 1000 m/s
Explanation:
![wavelength = \frac{velocity}{frequency}](https://tex.z-dn.net/?f=wavelength%20%3D%20%5Cfrac%7Bvelocity%7D%7Bfrequency%7D)
You have the wavelength and frequency, you just need to solve for velocity. You can do this by multiplying each side of the equation by frequency.
Hope this helps.
Answer:
The magnitude of the electrostatic force is ![7.615\times10^{-8}\ N](https://tex.z-dn.net/?f=7.615%5Ctimes10%5E%7B-8%7D%5C%20N)
Explanation:
Given that,
Charge ![q_{1}= 5.70\ nC](https://tex.z-dn.net/?f=q_%7B1%7D%3D%205.70%5C%20nC)
Charge ![q_{2}=-8.55\ nC](https://tex.z-dn.net/?f=q_%7B2%7D%3D-8.55%5C%20nC)
Distance = 2.40 m
We need to calculate the electrostatic force
Using formula of electrostatic force
![F= \dfrac{kq_{1}q_{2}}{d^2}](https://tex.z-dn.net/?f=F%3D%20%5Cdfrac%7Bkq_%7B1%7Dq_%7B2%7D%7D%7Bd%5E2%7D)
Where, k = coulomb's constant
q = magnitude of the charge
d = distance
Put the value into the formula
![F=\dfrac{9\times10^{9}\times5.70\times10^{-9}\times8.55\times10^{-9}}{(2.40)^2}](https://tex.z-dn.net/?f=F%3D%5Cdfrac%7B9%5Ctimes10%5E%7B9%7D%5Ctimes5.70%5Ctimes10%5E%7B-9%7D%5Ctimes8.55%5Ctimes10%5E%7B-9%7D%7D%7B%282.40%29%5E2%7D)
![F=7.615\times10^{-8}\ N](https://tex.z-dn.net/?f=F%3D7.615%5Ctimes10%5E%7B-8%7D%5C%20N)
Hence, The magnitude of the electrostatic force is ![7.615\times10^{-8}\ N](https://tex.z-dn.net/?f=7.615%5Ctimes10%5E%7B-8%7D%5C%20N)
Answer:
Orbital motion
1.is a gravitational motion.
2.they move in the same direction.
3.move are the same time.
Axial motion
1.is a rotary motion
2.move around it own axis
3. revolution takes one year
A sun-sized star will spend most of its lifetime as a main sequence star. It is the stage in a star's life cycle where it maintains as a stable nuclear reaction. The sun in our solar system is a clear example of this. The number of years that these stars would spend at this stage depends largely on the mass of the star. These stars would fuse atoms of hydrogen forming them into helium atoms inside their cores. Fusion reactions are continually happening as days and years pass at this stage. Approximately ninety percent of the stars found in the universe are main sequence stars.