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bixtya [17]
4 years ago
11

Let's start by calculating what acceleration the rocket must produce to launch into earth orbit. In order to attain orbit around

earth, the ATLAS V rocket must accelerate up to a speed of about 7700 meters per second in about 4.2 minutes. What average acceleration is required to accomplish this
Physics
1 answer:
blondinia [14]4 years ago
8 0

Answer:

30.56 m/s^2

Explanation:

Given that In order to attain orbit around earth, the ATLAS V rocket must accelerate up to a speed of about 7700 meters per second in about 4.2 minutes.

The average acceleration that is required to accomplish this will be

Average acceleration = change in velocity / time

Average acceleration = 7700/ 4.2 × 60

Average acceleration = 7700/252

Average acceleration = 30.56 m/s^2

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Two point charges are separated by 6 cm. The attractive force between them is 20 N. Find the force between them when they are se
Scorpion4ik [409]

Answer:

5 N

Explanation:

F_1 = 20 N

r_1 = 6 cm

r_2 = 12 cm

k = Coulomb constat

q = Charge

\dfrac{F_1}{F_2}=\dfrac{\dfrac{kq_1q_2}{r_1^2}}{\dfrac{kq_2q_2}{r_2^2}}\\\Rightarrow \dfrac{F_1}{F_2}=\dfrac{r_2^2}{r_1^2}\\\Rightarrow \dfrac{F_1}{F_2}=\dfrac{12^2}{6^2}\\\Rightarrow \dfrac{F_1}{F_2}=4\\\Rightarrow F_2=\dfrac{F_1}{4}\\\Rightarrow F_2=\dfrac{20}{4}\\\Rightarrow F_2=5\ N

The force is 5 N

7 0
3 years ago
Light is incident from air on the surface of a glass slab, which has an index of refraction of 2.5 In the air the light beam mak
djverab [1.8K]

Answer:

13.26°

Explanation:

Using Snell's law as:

n_i\times {sin\theta_i}={n_r}\times{sin\theta_r}

Where,  

{\theta_i}  is the angle of incidence  ( 35.0° )

{\theta_r} is the angle of refraction  ( ? )

{n_r} is the refractive index of the refraction medium  (glass, n=2.5)

{n_i} is the refractive index of the incidence medium (air, n=1)

Hence,  

1\times {sin35.0^0}={2.5}\times{sin\theta_r}

Angle of refraction= sin⁻¹ 0.2294 = 13.26°.

<u>13.26° is the angle of the beam with the normal in the glass.</u>

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the greatest number of protons is astatine (At)

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