An object's color is determined by the wavelengths of light that it _______. A. diffracts. B. reflects. C. refracts. D. absorbs.

Answer:

b

Explanation:

defenettly right

Answer:

A-the energy of the wave decreases gradually

Explanation:

when a wave is acted upon by an external damping force the energy of the wave decreases gradually.

The energy degrades into the form of heat which is considered to be of less value and use. The reason is because it disperses and spreads more widely.

So therefore it end up as heat with a little sound but that is close to none because that too disperses into heat i.e. decreased form of energy.

Answer:

A

Explanation:

PLATO

Answer:

Shown from explanation

Explanation:

You have heard that expression what ever goes up must come down that's usually used to mean when you throw an object up, it comes down on its accord. This is due to a force on the earth that occurs in nature known as gravity.

So when an object falls under this influence it's said to fall freely.

Note not all heavenly bodies have gravitational pull, from experience by scientists who went to the moon they found out whatever goes up keeps flying endlessly so in that case an external force is needed to keep objects in the moon on ground level.

Hence the parachute falls on earth freely without an external force but on the moon it must fall with an external force inputed on the parachute system.

This means in the earth we have free fall but in the moon no such thing exist. So a body falls freely when there is gravity.

If the upward acceleration is equal to the acceleration due to gravity (), then the apparent weight would be zero, indicating that the passenger is experiencing weightlessness or is in a state of free fall.

When the box has left the rubber band but is still moving upward, the passenger's apparent weight would be less than their actual weight.

The apparent weight of an object is the force exerted on it by a supporting surface, which in this case is the floor of the box. It is equal to the normal force acting on the object.

As the box accelerates upward, there are two main forces acting on the passenger: the gravitational force (weight) pulling them downward and the normal force pushing them upward. The normal force is responsible for providing the upward acceleration to the passenger.

Since the passenger is moving upward, the normal force exerted by the floor must be less than their actual weight to create the net upward force necessary for upward acceleration. Therefore, the passenger's apparent weight is reduced.

The exact value of the apparent weight depends on the magnitude of the upward acceleration and the mass of the passenger. The apparent weight can be calculated using the equation:

Apparent weight = Actual weight - (Mass of passenger * Magnitude of upward acceleration)

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