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2 years ago

What does the subscript 2 indicate in the compound MgCl2?

Physics

2 answers:

horsena [70]2 years ago

6 0

2 chlorine molecules for every one magnesium molecule. Cl——Mg——-Cl.

tresset_1 [31]2 years ago

4 0

It means there are two chlorine molecules and there is only one magnesium molecule (because no subscript really just means there is an invisible 1 that isn't listed).

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The portion of electromagnetic spectrum is occupied by signal is called

Alex Ar [27]

Answer:

the portion of electromagnetic spectrum is occupied by signal is called bandwidth

Explanation:

Bandwidth is the part of electromagnetic spectrum which is occupied by the signal. It is also called as the range of frequency over which the receiver or any other electronic circuit works. Bandwidth is the amount of the data been transmitted from one point to other within the network in the specific amount of the time. It is expressed as the bit rate and are measured as bits per seconds (bps). Bandwidth is the sum of the connections.

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2 years ago

3. A car does an emergency stop from 144 km\h in 4s<br> What was its deceleration?

strojnjashka [21]

Answer:

36?

Explanation:

5 0

2 years ago

A figure skater skates across a rink of length 50 m in 12.1 seconds. a. What is the average speed of the skater? (2 points) b. I

melamori03 [73]

(a) The skater covers a distance of S=50 m in a time of t=12.1 s, so its average speed is the ratio between the distance covered and the time taken:
$v= \frac{S}{t}= \frac{50 m}{12.1 s}=4.13 m/s$

(b) The initial speed of the skater is
$v_i = 4 m/s$
while the final speed is
$v_f = 5.3 m/s$
and the time taken to accelerate to this velocity is t=2 s, so the acceleration of the skater is given by
$a= \frac{v_f - v_i}{t}= \frac{5.3 m/s-4.0 m/s}{2.0 s}=0.65 m/s^2$

(c) The initial speed of the skater is
$v_i = 13.0 m/s$
while the final speed is
$v_f=0$
since she comes to a stop. The distance covered is S=8 m, so we can use the following relationship to find the acceleration of the skater:
$2aS=v_f^2 -v_i^2$
from which we find
$a= \frac{-v_i^2}{2S}= \frac{-(13.0m/s)^2}{2 \cdot 8.0 m}=-10.6 m/s^2$
where the negative sign means it is a deceleration.

4 0

2 years ago

What is a substance?

Alika [10]

Answer:

A single component that can’t be separated

brainliest please ;)

5 0

3 years ago

how does the composition of a mixture of hydrogen and oxygen differ of hydrogen and oxygen differ from the composition of a comp

mafiozo [28]

In a mixture, there will be a solute and solvent. The hydrogen and oxygen are still two different atoms that just mixed together. But in a compound, the hydrogen and oxygen have a bond, making a new and bigger molecule. A mixture can easily be separated by physical means but a compound isn't.

6 0

2 years ago