Answer: It is the same amount of weight as the girl is putting on the pogo stick. When you are pushing something downward then gravity will push back with the equal amount of force.
Explanation:
Answer:
100 times brighter
Explanation:
The apparent luminosity of a star follows the inverse square law, which means that the luminosity is inversely proportional to the square of the distance:
where r is the distance.
In this problem, star A and star B have same intrinsec luminosity, but star B is 10 times farther than star A:
We can write the luminosity of star A as follows:
While the luminosity of star B will be:
Substituting :
So, star A will appear 100 times brighter than star B.
Answer:
Explanation:
The energy of a photon is: when h is the Planck constant.
Then, we calculate the energy of a photon with a wavelength equal to 550 nm.
To find the number of photons we can use this equation:
Have a nice day!
Answer:
See Explanation
Explanation:
The relationship between angle of an incline and the acceleration of an object moving down the incline.
As the angle of an incline increases, so does the acceleration of the body moving down the incline increases, resolving the force acting on an inclined object
Parallel force = mgsin, perpendicular = mgcosΘ
With th weigh component 'mg' of the parallel force accounting for the acceleration of the body down the incline.
mgsinΘ = ma
Fnet = ma
B.) From Fnet = ma
Fnet = ma
a = Fnet / m
Where Fnet = Net force = mgsinΘ, a = acceleration
A group of protons and neutrons surrounded by electrons