D discussion of an investigation allows students find errors and change results I think
Answer:
G = 1.670 ×
Explanation:
From Newton's law of universal gravitation,
F =
Where F is the force of attraction, G is the gravitational constant, M is the mass of the earth, R is the radius of the earth.
From Newton's second law of motion,
F = mg
mg =
g =
⇒ G =
If the radius of the earth becomes half,
R = , then;
G =
Given that: g = 9.8 m/, radius of the earth is 6371000 m, mass of the earth is 5.972 × kg, then;
G =
= 1.670 ×
Answer:
The speed of the ball is 9.23m/s
Explanation:
Using kinematic equation for the vertical height is given by:
h = Ut + 1/2 gt^2
Where h = 36m as given from the question
g = acceleration due to gravity= 9.81
Initial velocity, U =0
t = time
Substituting into the equation
36 = 0 + 1/2 ×9.81 × t^2
36 = 4.905t^2
36/4.905 = t^2
7.34 = t^2
Sqrt(7.34) = t
2.71 seconds = t
Speed = distance / time
Speed = 25m/ 2.71s
Speed = 9.23m/s
Answer:
Cosmic ray is not considered electromagnetic radiation.
Explanation:
Electromagnetic radiation refers to
- It is Radiation that has both electric and magnetic fields and travels in waves.
- Electromagnetic radiation can vary in strength from low energy to high energy.
X rays are the rays produced when a negatively charged electrode is heated by electricity and electrons are released, thereby producing energy. It is a type of radiation called EM waves.
Radio wave are wave from the portion of the electromagnetic spectrum at lower frequencies than microwaves. It is an EM wave.
Ultraviolet wave Invisible rays that are part of the energy that comes from the sun. It is an example of EM wave.
Cosmic ray is a high-speed particle either an atomic nucleus or an electron that travels through space.
Cosmic ray is not an electromagnetic wave.
Hence
Cosmic ray is not considered electromagnetic radiation
learn more about electromagnetic radiation here:
<u>brainly.com/question/13695751</u>
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What? Do you have a picture of the problem ?