Answer: Doppler effect
Explanation:
The Doppler effect refers to the change in a wave perceived frequency when the emitter of the waves, and the receiver (or observer in the case of light) move relative to each other.
In other words, it is the variation of the frequency of a wave due to the relative movement of the source of the wave with respect to its receiver.
Another important aspect is that the effect occurs in all waves (including light and sound). However, it is more noticeable to humans with sound waves.
The Doppler effect is the apparent change in frequency of waves due to the motion of a source.
astronomers named the planet Kepler-186f
Astronomers named the planet they discovered Kepler-186f after the Kepler space telescope, which took the first picture of the planet.
a loss of gravity on earth would stop pulling down the air,water and earth's atmosphere
ther would be a sudden and significant loss of air pressure
the lack of any forceful gravitational pull would turn humans
Without gravity, humans and other objects would become weightless.
B.) the universe may continue to expand
C.) stars could burn out , causing the universe to become dark and cold
D.) gravity could pull galaxies back together causing a reverse of the Big Bang
Answer:
B.) the universe may continue to expand
Explanation:
The steady state theory which states that the universe was, is and will be the same, has been discredited by two physicists who found the leftover energy from the big bang.
If you are listening to FM radio, you might have heard some static noise while changing stations, that noise is from the leftover energy from the big bang. This energy is called the dark energy.
The dark energy tries to rip everything apart while gravity tries to hold everything together.
It was observed that the dark energy is stronger than gravity.
The distance between the galaxies is increasing. This proves that the dark energy successfully defeated the gravity and expanted two massive objects in the universe.
Because of this dark energy the universe will continue to expand.
Note: Dark energy is also increasing the distance between protons in atomic nucleus in every atom in our body too. Chilly right?
the answer is B! it would continue to expand.....just took the test XD
When you lift a box up off the floor, you must exert a force at least equal to the weight of the box. If you lift the box at constant speed, you "do work" on the box that would be equal to the force you exert (the weight of the box) times the height through which you lifted the box. If you exert a force of 50 Newtons on the box and lift it 1 meter high, then you did (50 N)x(1 m) or 50 N-m of work on the object. 1 Newton-meter is called a Joule (J), pronounced "jewel." In lifting the 50 N box upward 1 meter at constant speed, you would do 50 Joules of work on the box. That means your body used 50 J of energy to lift the box.
and here is the Equation for Work: Work = Force x distance, or W = F d.
When you lift a box up off the floor, you must exert a force at least equal to the weight of the box. If you lift the box at constant speed, you "do work" on the box that would be equal to the force you exert (the weight of the box) times the height through which you lifted the box. If you exert a force of 50 Newtons on the box and lift it 1 meter high, then you did (50 N)x(1 m) or 50 N-m of work on the object. 1 Newton-meter is called a Joule (J), pronounced "jewel." In lifting the 50 N box upward 1 meter at constant speed, you would do 50 Joules of work on the box. That means your body used 50 J of energy to lift the box.
and here is the Equation for Work: Work = Force x distance, or W = F d.