wave
vacuum
medium
PLZ help me!
Answer: wave
Explanation:
These are the basic definitions and characteristic of the terms given, which show tha the only rigth answer is the second option: wave.
1) Force is an interaction. There are four natural forces: electrostatic, gravity, strong nuclear force and weak nuclear force.
2) Wave: is a sequence of pulses or vibrations that cause the continuous transportation of energy (propagation). There is not transport of mass, only energy.
Some examples of waves are sound waves, electromagnetic waves (light, radio waves, micro waves, infrarred waves, ultraviolet waves).
3) Vacuum: is the absence of matter; empty space. Only electromagnetic waves can travel through vacuum; other waves need a medium to travel.
4) Medium: any matter is a medium: a solid, the air, a liquid, all of them are media through which waves can transport its energy, depending of the wavelength.
B. The work done is equal to the area under the curve.
C. Work cannot be determined from this type of graph.
D. The work done is equal to length of the curve.
E. The work done is equal to the slope of the curve.
The work done by a force over a given displacement, as represented in a force versus position graph, is equal to the area under the curve.
In a force versus position graph, the work done by the force over the given displacement is represented by the area under the curve. The work done is the integral of the force with respect to displacement which, in a graphical representation, translates to the area under the curve of the force versus position graph. For example, if the force is constant, the graph will be a rectangle, and the work done will be the product of force (height of the rectangle) and displacement (width of the rectangle). If the force is variable, the area under the curve might need to be calculated by dividing it into small sections and summing up their areas.
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B) These advancements do not contribute to the greenhouse effect.
Eliminate
C) These advancements use cleaner fuels thereby reducing pollution.
D) These advancements are very expensive and not available to everyone.
Technical advancements in transportation are very expensive and not available to everyone.
A revolution is currently taking place in transportation technology. While new ideas are ready to completely transform how we move, new technologies are increasing the effectiveness of existing transportation techniques.
The newest transportation revolution has seen a growth in different technologies.
Although these modern technologies are established to be environmental friendly, These advancements are very expensive and not available to everyone. This is one among the disadvantages of technological advances in transportation.
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Answer:
Option D
Explanation:
These advancements are very expensive and not available to everyone. The others are positive aspects of these advancements in transportation.
b. Refraction
c. Resonance
d. Diffraction
Answer:
Photons have no mass, they do have energy, and the gravity of a black hole (or any other gravitating body) will attract them.
Explanation:
is that what you wanted?
Answer:
The pull the astronauts feel in the moon will be gravitational too.
Explanation:
The pull will be gravitational too because there's a gravitational force exerted by the moon over the astronaut, this force keeps pulling the astronaut towards the moon surface but it's weaker than in earth because the mass of the moon is significantly less that the mass of the earth.