3 years ago

One property that makes electromagnetic waves differ from other types of waves is that they can

Physics

1 answer:

Flauer [41]3 years ago

5 0

travel through a vacuum at the speed of light. Other waves need a medium; sound waves need molecules that vibrate.

You might be interested in

The minute hand on a watch is 1.00 cm in length. Assume the origin of the xy-plane is at the center of the clock face, the x-axi

levacccp [35]

Answer:

fhfgfhffhfhfhfhfhhf

Explanation:

5 0

3 years ago

In 2000, a 20-year-old astronaut left Earth to explore the galaxy; her spaceship travels at 2.5 x 10^8 m/s. She returns in 2040.

lina2011 [118]

Answer:

42.11 years old

Explanation:

Given that:

In 2000, a 20-year-old astronaut left Earth to explore the galaxy; her spaceship travels at 2.5 x 10^8 m/s. She returns in 2040

To find her age we use:

$\Delta t_m=\frac{\Delta t_s}{\sqrt{1-\frac{v^2}{c^2} } }\\$

Δtm is time interval for the observer stationary relative to the sequence of

events = 2040 - 2000 = 40 years

Δts is is the time interval for an observer moving with a speed v relative to the sequence of event

v = velocity = 2.5 x 10^8 m/s

c = speed of light = 3 x 10^8 m/s

$\Delta t_s=\Delta t_m}{\sqrt{1-\frac{v^2}{c^2} } }\\\Delta t_s=40\sqrt{1-\frac{(2.5*10^8)^2}{(3*10^8)^2}}\\\Delta t_s=22.11\ yr$

Here age in 2000 is 20 year, therefore when she appear she would be 20 year + 22.11 year = 42.11 years old

7 0

3 years ago

Movement of a rocket

makkiz [27]

Answer:

as the fuel burns,games push against the rocket moving it upward

8 0

3 years ago

Read 2 more answers

(A)

AveGali [126]

What you have to show us a photo or else we don’t know

4 0

3 years ago

Can you have a changing speed and constant velocity?

igor_vitrenko [27]

No, a body can not have its velocity constant, while its speed varies. Rather, it can have its speed constant and its velocity varying. For example in a uniform circular motion.

7 0

3 years ago