1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Andre45 [30]
3 years ago
15

A projectile is shot directly away from Earth's surface. Neglect the rotation of the Earth. What multiple of Earth's radius RE g

ives the radial distance (from the Earth's center) the projectile reaches if (a) its initial speed is 0.520 of the escape speed from Earth and (b) its initial kinetic energy is 0.520 of the kinetic energy required to escape Earth
Physics
1 answer:
Anna35 [415]3 years ago
3 0

Answer:

a)r_1=1.36R

b)r_2=2.083R

Explanation:

<u>Given:</u>

a) when the initial velocity of the projectile is 0.520 times the escape velocity from the earth.

Let r be the radial distance from the earth's surface Let M be the mass of the Earth and R be the radius of the Earth

Now using conservation of Energy at earths surface and at distance r we have

\dfrac{-GMm}{R}+\dfrac{m(0.52V_e)^2}{2}=\dfrac{-GMm}{r_1}\\\dfrac{-GMm}{R}+\dfrac{m\times 0.52^2\times \dfrac{2GM}{R}}{2}=\dfrac{-GMm}{r_1}\\r_2=1.36\ R

b) when the Initial kinetic Energy of the projectile is 0.52 times the Kinetic Energy required to escape the Earth

Conservation of Energy we have

\dfrac{-GMm}{R}+0.52\times KE_{escape}=\dfrac{-GMm}{r_2}\\\dfrac{-GMm}{R}+0.52\times\dfrac{m\times \dfrac{2GM}{R}}{2}=\dfrac{-GMm}{r_2}\\r_2=2.083\ R

You might be interested in
A box is pushed to the right with a force of 5N and at the same time it is pushed with a force of 3.6 N to the left. If the box
Aliun [14]

Answer: a= 0.175 m/s²

Explanation: To solve for acceleration we will use Newton's Second Law of Motion which is F=ma. Since there are multiple forces acting on the object, we need to summate the forces involved. Derive to find acceleration.

a= F/m

= 5 N - 3.6 N / 8 kg

= 0.175 m/s²

8 0
3 years ago
1. A school bus moves at 15 m/s relative to Logan standing on the street. If Harrison walks towards the
bekas [8.4K]
Answer:
18 m/s

Explanation:
15 m/s + 3 m/s = 18 m/s
6 0
3 years ago
Your diagram is a muscle that helps you breathe. do you think this muscle is voluntary or involuntary? Explain.
PIT_PIT [208]
The diaphragm is primarily an involuntary muscle. Although voluntary means can be achieved, such as when you hold your breath while swimming, this is temporary as the diaphragm will eventually work on its own to supply your body with oxygen.
3 0
3 years ago
In the amusement park ride known as Magic Mountain Superman, powerful magnets accelerate a car and its riders from rest to 43.4
Anton [14]

Answer:

Average net force, F = 15157.15 N

Explanation:

It is given that,

The mass of the car and riders is, m=3\times 10^3\ kg

Initial speed of the car, u = 0

Final speed of the car, v = 43.4 m/s

Time, t = 8.59 seconds

We need to find the  average net force exerted on the car and riders by the magnets. It can be calculated using second law of motion as :

F = m a

F=m(\dfrac{v-u}{t})

F=3\times 10^3\ kg\times (\dfrac{43.4\ m/s-0}{8.59\ s})

F = 15157.15 N

So, the average net force exerted on the car and riders by the magnets. Hence, this is the required solution.

5 0
3 years ago
Calculate the mass of -1.5C of electrons​
algol13
The electron is a type of low-mass, very negatively charged with a particle. As such, it can easily be deflected by passing close to other electrons or the positive nucleus of an atom. m = mass of an electron in kg = 9.10938356 × 10-31 kilograms. e = magnitude of the charge of an electron in coulombs = 1.602 x 10-19 coulombs. Hope this helps!
8 0
3 years ago
Other questions:
  • How many milliliters are in 3.65L
    14·2 answers
  • In a vacuum, which has a greater acceleration while in free fall: a7 kg bowling ball or a 0.007 kg feather?
    9·1 answer
  • Is an object moving in a circle at a constant speed accelerating?
    7·1 answer
  • How to find power in physics?
    11·1 answer
  • Hearing the siren of an approaching fire truck, you pull over to the side of the road and stop. As the truck approaches, you hea
    14·1 answer
  • 12. Energy from the breaking of atomic bonds in molecules (ex: C4 explosion)
    14·1 answer
  • What is the ƒ if v = 50 m/s and λ = 10 m?
    5·1 answer
  • Every day, every hour, every second one of the most important events in life is going on in your body—cells are dividing. When c
    10·1 answer
  • Can anyone say this is from which book And can you solve these question
    11·1 answer
  • PLEASE REAL ANSWERS IM SUPER BEHIND
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!