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aalyn [17]
1 year ago
9

How are communication signals on the ground sent to spacecraft?

Chemistry
1 answer:
gogolik [260]1 year ago
3 0

Answer:

d) the signals must be changed to another form at ground stations to travel through space.

Explanation:

Spacecraft use transmitters to communicate with people on Earth. This are sent in the form of signals.

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•What do you think salt water is useful for?
Ivanshal [37]

Answer:

it is good for thermoelectric power plant cooling

it means that there is a lot of salt in the water

Someone would remove salt from water to be able to drink it

lastly, salt can be removed from water with reverse osmosis systems

6 0
2 years ago
To determine the age of fairly recent fossils and organic artifacts, it is possible to analyze the amounts of the isotopes 14C a
dolphi86 [110]

Answer: The net change in the atoms is the conversion of a neutron to a proton, turning Carbon (6 protons) into Nitrogen (7 protons).

Explanation:

Carbon-14, generated from the atmosphere, has 6 protons and 8 neutrons. That's where the 14 comes from, called the mass number, is the sum of protons and neutrons (6+8=14).

Carbon-14 is radioactive and decays by beta decay. That means one of its neutrons spontaneously turns into a proton, an electron, and a neutrino, according to:

^{14} C \rightarrow\ ^{14} N\ +\ e^-  +\ neutrino

After that, the atom has 7 protons and 7 neutrons, maintaining its mass number but changing its atomic number from 6 to 7, turning into Nitrogen.

3 0
3 years ago
Match the term with the definition.
alina1380 [7]
What term and what definition..
5 0
3 years ago
Read 2 more answers
What is the approximate hydronium ion concentration and hydroxide ion concentration in bleach? Which is higher?
maria [59]
Hydroxide ion concentrstion in bleach is higher
6 0
3 years ago
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What is the mass, in grams, of 1.58 mol of water, h2o?
inn [45]
Answer is: mass of 1,58 mol of water is 28,44 grams.
n(H₂O) = 1,58 mol.
M(H₂O) = 2 · 2 g/mol + 16 g/mol.
M(H₂O) = 18 g/mol.
m(H₂O) = n(H₂O) · M(H₂O).
m(H₂O) = 1,58 mol · 18 g/mol.
m(H₂O) = 28,44 g.
n - amount of substance.
M - molar mass.
3 0
3 years ago
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