Answer: 172
Explanation: Because yeah
A manipulated variable is the independent variable in an experiment. It’s called “manipulated” because it’s the one you can change. In other words, you can decide ahead of time to increase it or decrease it. In an experiment you should only have one manipulated variable at a time. The manipulated variable is the independent variable in an experiment.
Answer: Gravitational force
Explanation:
The sun is known as a star in the centre of the solar system. It is the most important source of energy for life on earth. It is also known as a yellow dwarf star with gravity that holds the solar system together in its orbit. Our seasons, ocean current, weather, climate and radiation belts are motivated by the interaction between the sun and earth. The sun is made up of 91% hydrogen and 8.1% helium by atoms, 70.6%hydrogen and 27.4% helium by mass.
The sun and other stars masses are held by Gravitational force attraction that accounts for the great heat and light they generate.
Gravitational force is the force by which planets or other body draws objects toward its center. The gravitational force of the sun keep the earth in orbit around which enables the great heat and light generated by the sun. This also applies to other stars.
Ans: Intensity = I = 
Explanation:First you need to find out the speed of Electromagnetic wave:
Since
v =
v =
Plug in the values:
v =
v =
m/s
Now that we have "v", we can use the following formula to find the intensity of wave:
Intensity = I =
800 going upwards
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