Since lower case m stands for both the prefix. milli and for unit for length meter, how do we tell which one is meant when they are used?
a: a prefix is never used alone. so a lone m (lower case) would refer to a unit, the meter (the si metric unit of length.)
b: the prefix comes before the unit, so mm (both lower case) would stand for millimeter.
c: the prefix comes before the unit, so mg (both lower case) would stand for milligram.
d: all of the other 3 answer choices.

D: all of the other 3 answer choices

Explanation:

Milli- is a prefix, so a lowercase m in front of any other letter means milli-.  For example, mm = millimeter and mg = milligram.

An m by itself means meters.

D: all of the other 3 answer choices.

Explanation:

A: a prefix is never used alone. So a lone m (lower case) would refer to a unit, the meter (the SI metric unit of length.)

Above statement is true because here we can see that when prefix is placed before any SI unit then only we use it let say if we use only unit "m" then it is clearly assumed to be meter

B: the prefix Comes before the unit, so mm (both lower case) would stand for millimeter.

TRUE

Since prefix is always used before SI unit then we have to use the prefix like it is shown here for length. when we give unit as "mm" then it will show millimeter.

C: the prefix comes before the unit, so mg (both lower case) would stand for milligram.

TRUE

Since prefix is always used before SI unit then we have to use the prefix like it is shown here for mass. when we give unit as "mg" then it will show milligram.

answer: d. a cme increases the amount of energy in the solar wind

explanation:

coronal mass ejections, also called cmes, are large clouds of plasma and magnetic field that erupt from the sun. only when the cloud is aimed at earth will the cme hit earth and therefore cause impacts. high-speed solar wind streams come from areas on the sun known as coronal holes.

the box does not move because you need to use a force greater than 300 n. you are only using 50 n. it needs to at least be 301 n for the box to move because then it is an unbalanced force and it will move the way that the greater force is pushing it. if you use only 300 n it will be a balanced force and will not move because the force you are exerting on the   box is the same as its force.

hope this !

im sorry if i went too in depth, i am going to include a link to a video on khan academy that will explain this.   hope that you like the video and that it explains more in detail to you.

that is the link.