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never [62]
3 years ago
6

What has occurred when metal changes color because of tarnishing?

Physics
2 answers:
ycow [4]3 years ago
8 0
Answer is: A chemical change occured when a metal changed color because it reacted with another substance. In chemical change new substances are formed, the atoms are rearranged and the reaction is followed by an energy change
Arisa [49]3 years ago
6 0
I believe the answer is A
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A new ride being built at an amusement park includes a vertical drop of 71.6 meters. Starting from rest, the ride vertically dro
Allisa [31]

Answer: 2.6x107

Explanation:

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3 years ago
a boy steps off the end of a high diving board and drops into the water below. it takes the boy 0.78 seconds to reach the water.
tino4ka555 [31]

Answer:

7.644 feet

Explanation:

Free fall means that an object is falling freely with no forces acting upon it except gravity, a defined constant, g = -9.8 m/s2. The distance the object falls, or height, h, is 1/2 gravity x the square of the time falling.

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2 years ago
1. The property of a material to absorb liquid like water is called
frez [133]

Answer:

A hygroscopic substance is one that readily attracts water from its surroundings, through either absorption or adsorption.

Explanation:

A hygroscopic substance is one that readily attracts water from its surroundings, through either absorption or adsorption.

3 0
2 years ago
Match each type of wave to the way it moves.
OverLord2011 [107]

Answer:

Transverse wave- Back and forth at right angles to the direction of the wave arrow.

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electromagnetic wave- two alternating waves moving at right angles to each other.

Explanation:

In a longitudinal wave, the particles vibrate at right angles in reference to the wave motion.

In a transverse wave, the particles vibrate parallel to the wave motion

Electromagnetic waves occur as a result of the interaction between two  waves and are normally transverse in nature.  

8 0
3 years ago
An areoplane initially at rest, undergoes a constant acceleration on of 2.5m/second down the runway for 30sec before taking off​
ikadub [295]

Answer:

I'll just assume that the question is what's the velocity of the airplane before it takes off because you haven't included a question. Where u: velocity, a: acceleration, t: time

u = a \times t \\ u = 2.5 \times 30 \\ u = 70ms

4 0
3 years ago
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