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prohojiy [21]
3 years ago
12

Why does the moon have a layer of powdery "soil" on its surface?

Physics
2 answers:
sweet-ann [11.9K]3 years ago
8 0
<span>The powdery soil is the result of  tons tiny impacts by small particles striking the Moon.</span>
daser333 [38]3 years ago
3 0
<u><em>Lunar soil is the fine fraction of the regolith found on the surface of the moon. Its properties can differ significantly from those of terrestrial soil.</em></u>

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Would a pair of scissors with really long blades and a short handle be practical? Why or why not?
Lana71 [14]
Yes, for balance.hope this helped.

6 0
3 years ago
The speed of a boat in still water is 20 mph. it travels from one pier to another with the current in 4 hours and back against t
saw5 [17]
The answer is, "the speed of the current is 5 miles per hour."

To calculate the speed of the current,
let's assume speed of current =  xmph. Time taken to travel from one pier to another with the current = 100/(20+x)h


But the time taken to travel from one pier to another with the current, which is given is = 4 hours. So,  4=100/(20+x) 80+4x = 100

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3 0
3 years ago
A 58.5 kg sprinter starts a race with an acceleration of 4.40 m/s2. What is the net external force on him?
mote1985 [20]

Answer:

External force on him = 257.40 N

Equation is; F = ma (where 'f' is force, 'm' is mass and 'a' is acceleration)

Explanation:

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According to Newton's second law of motion; F = ma

External force on the sprinter = 58.5 kg × 4.40 m/s² = 257.40 N

4 0
3 years ago
A charged particle A exerts a force of 2.45 μN to the right on charged particle B when the particles are 12.2 mm apart. Particle
Brilliant_brown [7]

Answer:

F_2 = 1.10 \mu N

Explanation:

As we know that the electrostatic force is a based upon inverse square law

so we have

F = \frac{kq_1q_2}{r^2}

now since it depends inverse on the square of the distance so we can say

\frac{F_1}{F_2} = \frac{r_2^2}{r_1^2}

now we know that

r_2 = 18.2 mm

r_1 = 12.2 mm

also we know that

F_1 = 2.45 \mu N

now from above equation we have

F_2 = \frac{r_1^2}{r_2^2} F_1

F_2 = \frac{12.2^2}{18.2^2}(2.45\mu N)

F_2 = 1.10 \mu N

5 0
3 years ago
What is work?(theoretically)
emmasim [6.3K]

Answer:

force×distance

Explanation:

work is the ability of an object to move a distance as a result of the force being applied

4 0
3 years ago
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