Answer:
a)
b)
Explanation:
First, we need to obtain the linear momentum of the photons of wavelength 350nm.
We are going to use the following formula:
So the linear momentum is given by:
Having the linear momentum of the photon, we can calculate the speed of the hydrogen molecule to have the same momentum, we can use the classic formula for that:
The mass of the hydrogen molecule is given by:
What we've done here is to use the molecular weight of the hydrogen, and covert it kilograms, we had to multiply by two because the hydrogen molecule is found in pairs.
so:
Complete Question:
A horizontal tube consists of a 7.0-cm-diameter pipe, that narrows to a 2.0-cm-diameter throat. In the pipe, the water pressure is twice atmospheric pressure and the water flows with a speed of 0.40 m/s. What is the pressure in the throat, assuming that the water behaves like an ideal fluid. The density of water is 1000 kg/m^3, and the atmospheric pressure is 1.01 x 10^5 Pa.
Answer:
1.9 atm is the pressure in the throat
Explanation:
First find velocity of water and then find the pressure using Bernoulli's Principle.
The other elements are Carbon , Hydrogen, Nitrogen, Sulfate and Phosphorus
Answer:
A rocket with more mass will speed up more slowly, just as in the horizontal example, but there is another effect. The force of gravity is now acting in the opposite direction to the thrust, so the resultant force pushing the rocket upwards is also less.
Explanation:
Given that,
Mass of ring = m
Mass of sphere = M
Radius = R
Distance = √8R
We need to calculate the intensity of gravitational field
Using formula of intensity
Put the value into the formula
We need to calculate the force of attraction between the ring and the sphere
Using formula of attraction force
Where, M = mass of sphere
E = intensity of gravitational field
Put the value into the formula
Hence, The force of attraction between the ring and the sphere is