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IgorLugansk [536]
3 years ago
9

Hạt nhân nguyên tử được tạo bởi

Chemistry
1 answer:
Anna007 [38]3 years ago
8 0

Answer:

The FitnessGram™ Pacer Test is a multistage aerobic capacity test that progressively gets more difficult as it continues. The 20 meter pacer test will begin in 30 seconds. Line up at the start. The running speed starts slowly, but gets faster each minute after you hear this signal. [beep] A single lap should be completed each time you hear this sound. [ding] Remember to run in a straight line, and run as long as possible. The second time you fail to complete a lap before the sound, your test is over.

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Describe two advantages and two disadvantages of building your 3D model with modeling clay. (5 points)
marishachu [46]

Answer:

A model or simulation is only as good as the rules used to create it. It is very difficult to create an entirely realistic model or simulation because the rules are based on research and past events. The main disadvantage of simulations is that they aren't the real thing.

Explanation:

8 0
3 years ago
The period of a ripple on a lake is half a second. what is the frequency of the wave
Nataly_w [17]

Answer:

2 Hertz

Explanation:

<em>The frequency would be 2 Hertz.</em>

<u>The frequency of a wave is defined as the rate at which the particles of a medium vibrates when the wave is passed through it while the period of a wave is the time it takes the particles to make a complete cycle of vibration.</u>

The frequency of a wave is inversely related to its period and is defined by the following equation:

f = 1/t, where f is the frequency (in hertz) and t is the period (in seconds).

Hence, if the period of a ripple is 1/2 or 0.5 seconds, the frequency becomes;

f = 1/0.5 = 2 Hertz

7 0
3 years ago
Why do some substances react with each other while others do not
kolbaska11 [484]
It depends on the Chemical the Substance has. The more Chemicals, the better the Substance gets when its mixed with another.
7 0
3 years ago
What is the equations that decompose hydrogen peroxide
Rufina [12.5K]
2H2O2 decomposes into the products 2H2O + O2(g)
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Which characteristics is ALWAYS true for all members of the plant kingdom
fgiga [73]

Answer:

it is heterotrophic. it is unicellular. it does not have a nucleus.

Explanation:

6 0
2 years ago
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