Answer:
The magnitude of the resultant force is 6201 N
The direction of the resultant force is 72°
Explanation:
Please find the attached file for explanation;
Answer:
Estimation: year 1110.
Explanation:
We need to know how much time it takes to move 100 arcseconds if it moves at 0.11 arcsecond per year. Similarly to any velocity equation
, where in our case the distances are angular, we will obtain the time by doing:

Which, considering from 2019, the explosion ought to have been observed around 1110 (in reality it was observed by Chinese astronomers in 1054).
In simpler terms, a proton and neutron weigh 1 amu (atomic mass unit) each.
The nucleus has 15 protons and 18 neutrons. Since a proton's and a neutron's weight is only 1 amu, we can simply add the number of protons and neutrons to find the total mass of the nucleus:

The nucleus' mass is 33 amu.
Answer:
The wavelength is 
Explanation:
From the question we are told that
The frequency of operation of the microwave is 
Generally the wavelength is mathematically represented as

Here c is the speed of light with value 
So

=>
converting to nanometer

Answer:
25 m
9.9 m/s
22 m/s
Explanation:
m = Mass of ball
v = Velocity
g = Acceleration due to gravity = 9.81 m/s²
Applying conservation of energy

The height above the ground is 5.09683+20 = 25.09683 m = 25 m

The ball's speed as it passes the window on its way down is 9.9 m/s

The speed of impact on the ground is 22 m/s