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
Reika [66]
3 years ago
6

When a distant star explodes, a visible light telescope and s radio telescope located on earth receive signals from the explodin

g star at the same time
which feature of the electromagnetic theory does the evidence support

A. Visible light waves are more energetic than radio waves

B. Radio wavelengths are longer than visible light wavelengths

C. Electromagnetic radiation can have a wide range of frequencies

D. The speed of electromagnetic waves is independent on wavelength
Physics
1 answer:
lorasvet [3.4K]3 years ago
4 0

Answer:

the correct answer is D

Explanation:

When the star explodes the radiation travels through empty space at the speed of light c= 3 10⁸ m/s

This speed has been experimentally proven to be constant, therefore two two instruments arrive at the same time

Therefore the correct answer is D

You might be interested in
Someone please help!
Schach [20]

Answer:

a. 1.81

b. using the lap button feature

Explanation:

a. avg of the times

8 0
3 years ago
Read 2 more answers
The diagram shows a position-time graph What is the displacement of the object
algol13

The object is moving, so at different times, it has different displacement.  I'm guessing that you probably want to know the displacement at the end of the time on the graph ... 5 seconds.

Displacement is the distance and the direction FROM (the position at the  beginning) TO (the position at the end).

At the beginning ... time=0 ... the position is 1 meter.

At the end ... time=5 ... the position is zero.

The distance FROM the beginning TO the end is (zero - 1m) .  That's  <em>-1m </em>.


5 0
3 years ago
What symbol would best represent an electric fan in an electric circuit?
ladessa [460]

For this case we have, by definition, that:

Resistance is a component that is responsible for limiting the amount of current that can pass through a circuit, converting excess heat.

Consume energy.

Option A represents a swicth, option B represents a luminaire and option D represents a voltage source.

So, the correct option is C,

Answer:

Option C

3 0
3 years ago
Read 2 more answers
PLS HELP 30 POINTS IF U HELP
USPshnik [31]

Answer:

its D so yeah.........

Explanation:

tell me if it's wrong

8 0
3 years ago
Read 2 more answers
A ball whirls around in a vertical circle at the end of a string. The other end of the string is fixed at the center of the circ
never [62]

Answer:

T_b=m(g+\frac{v_b^2}{R})

Explanation:

At the bottom the tension would be upwards and the weight downwards, their difference being the centripetal force. Taking the upwards direction as positive we then have:

T_b-mg=F_{cp}=ma_{cp}=m\frac{v_b^2}{R}

where we have used the equation for centripetal acceleration. Thus we have:

T_b=m(g+\frac{v_b^2}{R})

4 0
3 years ago
Other questions:
  • Which two together represent the maximum penalty for violation of the cigarette contraband trafficking act CCTA?
    10·1 answer
  • Please help .. there could be more than one answer to this question.
    13·1 answer
  • Three point charges 2uc,-4uc and 6uc are held at the cotners of an equilateral triangle with sides equal to 3 cm. What is the re
    10·1 answer
  • Sodium ions (Na+) move at 0.844 m/s through a bloodstream in the arm of a person standing near a large magnet. The magnetic fiel
    7·1 answer
  • To be safe, the engineers making the ride want to be sure the normal force does not exceed 1.5 times each persons weight - and t
    7·1 answer
  •  A container of gas is at a pressure of 3.7 × 105 Pa How much work is done by the gas if its volume expands by 1.6 m3?
    15·1 answer
  • To warm up for a match, a tennis player hits the 58.0 g ball vertically with her racket. If the ball is stationary just before i
    10·1 answer
  • Endorphins are the body's natural pain killers because they block pain from the brain. Please select the best answer from the ch
    10·2 answers
  • What does it take to change the direction or speed of an object
    7·1 answer
  • A skateboarder, starting from the top of a ramp 4,5 m above the ground, skates down the ramp. The mass of the skateboarder and h
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!