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Lerok [7]
2 years ago
7

HELPPPPP

Chemistry
1 answer:
Darya [45]2 years ago
8 0

Answer:

Sound waves are faster than light waves when traveling through the air.

(This statement is NOT true)

or

Sound waves and electromagnetic waves are both needed to talk on a cell phone

Explanation:

Sound waves need a medium to travel through, but light does not.

Also, the statement "Sound waves and electromagnetic waves are both needed to talk on a cell phone" might also be NOT true, since, as far as I know, cellphone calls need radio and sound waves, not electromagnetic waves.

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Which plant has a longer orbit. Jupiter or Saturn​
romanna [79]

Answer:

Saturn

Explanation:

One whole orbit is a year on earth. Well it takes Saturn 10,759 days to make one whole orbit. It takes Jupiter 4,333 days to make a whole orbit.

7 0
3 years ago
A 100 g sample of an unknown liquid absorbs 2000 j of heat energy, raising the liquid's temperature from 50 ◦ c to 70 ◦
Mekhanik [1.2K]
Since there is no phase change, we can use the heat equation,
Q = mcΔT 
where Q is the amount of energy transferred (J), m is the mass of the substance (kg), c is the specific heat (J kg⁻¹ °C⁻¹) and ΔT is the temperature difference (°C).

Q = 2000 J
m = 100 g = 0.1 kg
c = ?
ΔT = (70 °C - 50 °C) = 20 °C

By applying the formula,
2000 J = 0.1 kg x c x 20 °C
         c = 2000 J / (0.1 kg x 20 °C)
         c = 1000 J kg⁻¹ °C⁻¹

Hence, the specific heat capacity of the liquid is 1000 J kg⁻¹ °C⁻¹.
5 0
4 years ago
PLEASE HELP ME WITH THE QUESTION IN THE IMAGE AND I WILL MARK AS BRAINLIEST IF CORRECT
ASHA 777 [7]

Answer:

1. absorbs and re-emits infrared radiation

2.three or more atoms in a molecule

Explanation:

research, lots of research.

5 0
3 years ago
Steroids are
valkas [14]
Steroids are lipids and complex carbohydrates
4 0
4 years ago
Plants get the energy they need for photosynthesis from __________________
r-ruslan [8.4K]
Plants get the energy they need for photosynthesis from the sun
5 0
3 years ago
Read 2 more answers
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