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
mafiozo [28]
3 years ago
13

How do scientist learn about stars and galaxies even tough humans have never been there?

Physics
1 answer:
sergiy2304 [10]3 years ago
5 0
Through satellites they launch into space.
You might be interested in
A compact car, mass 664 kg, is moving at 19 km/h toward the east. What is the car's momentum in kg x m/s?
Natasha2012 [34]

Answer:

3504.4 kgm/s

Explanation:

First, convert km/hr to m/s:

19 km/hr x 1000m/1km x 1/60min x 1/60s = 5.28 m/s

p = mv

p = (664 kg)(5.28 m/s) = 3504.4 kgm/s

6 0
3 years ago
The blood vessels that carry blood away from the heart to the rest of the body are
Digiron [165]
Arteries push blood to the rest of the body after leaving the heart.
5 0
3 years ago
Read 2 more answers
The average kinetic energy of particles of matter is called
GenaCL600 [577]

Answer:

The answer is Temperature.

8 0
3 years ago
A very long, straight horizontal wire carries a current such that 8.15×1018 electrons per second pass any given point going from
Maksim231197 [3]

Magnetic field 'B' at a distance 'r' from an substantially large conductor carrying current 'i' = (2x10^ -7)('i' ) / r 

Magnetic field 'B' beyond the wire= (2x10^ -7)(8.15x10^18x1.6x10^ - 19 ) /0.046 =5.7 x10^ -12 tesla 

As electrons move from west to east, the conventional current is from east to west. 

By means of Maxwell's right handed corkscrew rule, the way of magnetic field is from south to north.

3 0
3 years ago
Read 2 more answers
The velocity of waves having wavelength 0.643 m and frequency 3.25 e 10 hz is
Alexeev081 [22]

The relationship between velocity (v), wavelength (w) and frequency (f) is expressed as:

v = w f

Plugging in the given values into the equation:

v = 0.643 m (3.25 e 10 Hz)

Where Hz = 1 / s , therefore:

v = 0.643 m (3.25 e 10 / s)

v = 2.09 <span>e 10 m / s</span>

4 0
4 years ago
Other questions:
  • The arrow in a chemical equation means which of the following?
    8·1 answer
  • Do takis burn the inside of your stomach
    10·1 answer
  • True or false: (a) the induced emf in a circuit is proportional to the magnetic flux through the circuit.
    15·1 answer
  • What should Lidia do if she is planning to have children one day?
    6·1 answer
  • Two crewmen pull a raft through a lock, as shown in the figure(Figure 1). One crewman pulls with a force of 130 N at an angle of
    14·1 answer
  • Which phase must the moon be in during a solar eclipse?
    8·1 answer
  • Calculate the least velocity of projection required to give
    8·1 answer
  • I am totally stuck on number 7 can someone help!!!
    9·1 answer
  • What type of solution is seltzer water?
    12·1 answer
  • Which of the following are vector quantities? Select all that apply.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!