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Galina-37 [17]
4 years ago
5

Why does one side of the moon always face away from the earth?​

Physics
1 answer:
Vladimir [108]4 years ago
5 0

only one side of the Moon is visible from Earth because the Moon rotates on its axis at the same rate that the Moon orbits the Earth :)

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What is the value of g
Mariana [72]
It depends on the environment around you ... the number and size of
the masses around you, and your distance from their center of mass.

If you happen to be on the surface of the Earth, then

                       g  =  9.8 m/s²
       or
                       g  =  9.8 newton/kilogram .

It's different on other planets.  Be sure to look it up
before you leave, so you'll know what to expect.
5 0
4 years ago
Cars A and B are racing each other along the same straight road in the following manner: Car A has a head start and is a distanc
kumpel [21]

Answer:\frac{D_A}{v_B-v_A}

Explanation:

Given

car A had a head start of D_A

and it starts at x=0 and t=0

Car B has to travel a distance of D_A and d_a

where d_a is the distance travel by car A in time t

distance travel by car A is

d_a=v_A\times t

For car B with  speed v_B

d_B=D_A+d_a

v_B\times t=D_A+v_A\times t

t=\frac{D_A}{v_B-v_A}

7 0
4 years ago
Free charges do not remain stationary when close together. To illustrate this, calculate the magnitude of the instantaneous acce
ASHA 777 [7]

Answer:

a=2.304×10¹⁶m/s²

Explanation:

Given data

Distance d=2.5 nm=2,5×10⁻⁹m

Mass of proton m=1.6×10⁻²⁷kg

charge of proton q=1.6×10⁻¹⁹C

To find

acceleration a

Solution

Apply the Coulombs Law

F=k\frac{q_{1}q_{2}  }{r^{2} }

Where k is coulombs constant (k=9×10⁹Nm²/C²)

q=q₁=q₂

r=d

So

F=k\frac{|q^{2} |}{d^{2} }\\ as \\F=ma\\ma=k\frac{|q^{2} |}{d^{2} }\\a=\frac{k}{m} \frac{|q^{2} |}{d^{2} }\\a=\frac{(9*10^{9} )*(1.6*10^{-19} )^{2} }{(1.6*10^{-27} )*(2.5*10^{-9} )^{2} }\\ a=2.304*10^{16}m/s^{2}  

4 0
4 years ago
The energy source used to produce most of the electrical energy in the united states is
quester [9]
Coal power, using fossil fuels. 
5 0
3 years ago
the wires inside a cable each have there own plastic insulation .why does the insulasion have diffrent colours
marta [7]

A cable is a bundle of two wires or three wires or a thousand wires,
inside a single 'tube'.  In order for the cable to be useful, you need to
be able to match each wire at one end of the cable to the same wire
at the other end.  If each wire has a different physical appearance,
then it's easy.

6 0
4 years ago
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