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
elena-s [515]
2 years ago
13

What is the danger to spacecraft and astronauts from micrometeoroids?

Physics
1 answer:
Sloan [31]2 years ago
7 0

Answer:

Suppose the micrometeoroid weighed 1 g = .001 kg

Suppose also the spacecraft were moving at 18,000 mph (1.5 hrs per rev)

Usually, the smaller particle would be moving but for simplicity suppose that it were stationary wrt the ground

v = 18000 miles / hr * 1500 m/mile / 3600 sec/hr = 7500 m/s

KE = 1/2 * .001 kg * (7500 m)^2 = 28,125 Joules

One can see that 28000 Joules could be damaging amount of energy

You might be interested in
What does digital media allow you to do?
kifflom [539]
Digital media<span> are any </span>media<span> that are encoded in machine-readable formats. </span>
4 0
3 years ago
A 3,000-N force gives an object an acceleration of 15 m/s^2. The mass of the object is
Bingel [31]
<h2>Answer:</h2>

<em>Hello, </em>

<h3><u>QUESTION)</u></h3>

According to the second Newton's Law,

<em>✔ We have : F = m x a ⇔ m = F/a </em>

  • m = 3000/15
  • m = 200 kg

The mass of the object is therefore 200 kg.

7 0
3 years ago
Read 2 more answers
PLZ HELP AND HURRY
Rainbow [258]
Earth-like planet in another solar system
Hope this helps!!
8 0
3 years ago
How can you prove that air contains carbon dioxide?​
pickupchik [31]

Answer:

Limewater can be used to detect carbon dioxide. If carbon dioxide is bubbled through limewater then it turns from clear to cloudy/milky in colour. This is why limewater used in a simple respirometer can show that more carbon dioxide is present in exhaled air compared to inhaled air.

Explanation:

4 0
3 years ago
Read 2 more answers
Which are precautions to take when working with heat and fire?
shtirl [24]
Always wear protected face gear and body gear, make sure you have an adult present and a fire extinguisher
3 0
3 years ago
Other questions:
  • Reaction time is the lapse of time between muscular movement and external stimuli. True or false
    13·2 answers
  • 20 POINTS!!!! question 4 a, c, g, h from the sheet please answer as fully as possible
    13·1 answer
  • Newton's second law of motion says that the mass of an object times its acceleration is equal to the net force on the object. Wh
    11·1 answer
  • 2. This diagram represents a top-down view of an experiment on a table. The 250 g and 100 g masses are falling and are pulling t
    15·2 answers
  • What is the magnitude of an electric field in which the electric force on a proton is equal in magnitude to its weight?Use 1.67×
    7·1 answer
  • Date Page 2. A bicycle of 15kg is moving with the velocity of 10m/s. calculate the kinetic energy. ​
    11·1 answer
  • What makes the element named iron (Fe) different from the element named nickel (Ni)? A. Iron is a solid but nickel is a gas. B.
    8·1 answer
  • Four satellites are in orbit around the Earth. The heights of their four orbits
    11·1 answer
  • What is the net force on a bathroom scale when a 150-pound person stands on it
    12·1 answer
  • A bicycle has a momentum of 50.00 kg·m/s and a velocity of 5.0 m/s. What is the bicycle’s mass?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!