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timama [110]
3 years ago
15

Why is the sky blue?

Physics
2 answers:
ladessa [460]3 years ago
5 0

The sunlight of all colors passes through air, the blue part causes charged particles to oscillate faster than does the red part. More of the sunlight entering the atmosphere is blue than violet, however, and our eyes are somewhat more sensitive to blue light than to violet light, so the sky appears blue.

WINSTONCH [101]3 years ago
3 0

Answer:

it's blue

Explanation:

because gases and particles in earth's atmosphere scatter sunlight in all directions Blue light is scattered more than other colors because it travels as shorter smaller waves this is why we see a blue sky most of the time

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where would the spaceprobe experience the strongest net (or total) gravitional force exerted on it by Earth and Mars
Arte-miy333 [17]

Answer:

r = 41.1 10⁹ m

Explanation:

For this exercise we use the equilibrium condition, that is, we look for the point where the forces are equal  

                  ∑ F = 0

                  F (Earth- probe) - F (Mars- probe) = 0

                  F (Earth- probe) = F (Mars- probe)

Let's use the equation of universal grace, let's measure the distance from the earth, to have a reference system

the distance from Earth to the probe is        R (Earth-probe) = r

the distance from Mars to the probe is        R (Mars -probe) = D - r

where D is the distance between Earth and Mars

                   

                 G  \ \frac{m \ M_{Earth}}{r^2} = G  \ \frac{m \ M_{Mars}}{(D-r)^2}

                 M_earth (D-r)² = M_Mars r²

                 (D-r) = \sqrt{ \frac{M_{Mars}}{ M_{Earth}} }    r

                  r ( 1 + \sqrt{ \frac{M_{Mars}}{M_{Earth}} }) = D

                  r = \frac{D}{ 1+ \sqrt{\frac{M_{Mars}}{ M_{Earth}} } }

We look for the values ​​in tables

                  D = 54.6 10⁹ m (minimum)

                  M_earth = 5.98 10²⁴ kg

                  M_Marte = 6.42 10²³ kg = 0.642 10²⁴ kg

                   

let's calculate

                  r = 54.6 10⁹ / (1 + √(0.642/5.98)  )

                  r = 41.1 10⁹ m

5 0
2 years ago
A VW beetle goes from zero to 27m/s in 7.6 seconds. What is the acceleration?
Firlakuza [10]
Initial speed(u)=0m/s
Final speed(v)= 27m/s
Time(t)=7.6s
Use the equation of motion: v = u + at
27 = 0 + a(7.6)
27/7.6 = a
a = 3.55 m/s^2  (3 s.f)


7 0
3 years ago
do u ever think that how are u living cause we could not even be here and God but made us but had did it all started I believe i
Katena32 [7]

Answer:

What is the question

Explanation:

lol

5 0
3 years ago
Which state of matter has a definite volume but no definite shape
a_sh-v [17]
The answer is liquid.
6 0
3 years ago
PLEASE HELP ASAP!!
kirza4 [7]

Answer:

A. Distance over which the force is applied

Explanation:

As we know that in pulley system the mass of the car is balanced by the tension in the string

so here we will have

T = r \times F

so here in order to decrease the force needed to lift the car we have to increase Distance over which the force is applied

So here if we increase the distance over which force is applied then it will reduce the effort applied by us in this pulley system as the torque will be more if the distance is more.

7 0
3 years ago
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