Answer:
Impulse = 80Ns
Explanation:
Given the following data;
Mass = 3kg
Force = 20N
Time = 4 seconds
To find the impulse experienced by the object;
Impulse = force * time
Impulse = 20*4
Impulse = 80Ns
Therefore, the impulse experienced by the object is 80 Newton-seconds.
Answer:
0.5I0
Explanation:
Because once ligh passes though any polarizer 50% of it is gone. The second polarizer is also oriented in the same direction so it passes through with no effect.
Explanation:
dark matter is a form of matter thought to account for approximately 85% of the matter in the universe and about a quarter of its total mass–energy density or about 2.241×10⁻²⁷ kg/m³. Its presence is implied in a variety of astrophysical observations, including gravitational effects that cannot be explained by accepted theories of gravity unless more matter is present than can be seen. For this reason, most experts think that dark matter is abundant in the universe and that it has had a strong influence on its structure and evolution. Dark matter is called dark because it does not appear to interact with the electromagnetic field, which means it doesn't absorb, reflect or emit electromagnetic radiation, and is therefore difficult to detect.
The human beings use 10 % of the brain and the remaining 90 percent is full of unused potential and undiscovered abilities.
Explanation:
It is stated that every human beings use 10 percent of their brain and the other 90 percent is used only for operating a limited stretch. the average adult human brain can store the 2.5 million gigabytes digital memory.
The human brains contains about 100 billion neurons and around i quadrillion to 1 million connections in the cells. The dendrites provide more information than passive wiring.
The unused part of the brain is not necessary it simply occupies the space. The damaged parts of the brain should be removed.
Potential energy is stored energy in an object or system. Kinetic energy is when the object is in motion. Potential energy is not relative to an objects environment. Kinetic energy is relative to other moving and stationary objects in its main environment.
