3 years ago

Which statement describes a way electromagnetic waves are different from mechanical waves?

Physics

1 answer:

Goryan [66]3 years ago

7 0

a. Wrong. EM waves can travel through matter OR vacuum.

b. True, but so can mechanical waves.

c. Wrong. Waves transfer energy, not matter.

d. This is it. EM waves can travel through empty space, and mechanical waves can't.

You might be interested in

I WILL MARK BRAINLIEST!!ASAP!!! Wet Lab - Coulomb's Law lab from edge!!

anyanavicka [17]

Answer:

i don't get what I have to do

8 0

3 years ago

A car travels along a highway with a velocity of 24 m/s, west. The car exits the highway; and 4.0 s later, its instantaneous vel

zloy xaker [14]

Answer:

$4.25 m/s^{2}$

Explanation:

Change in velocity considering the x component will be

Final velocity-Initial velocity

$\triangle v_x= 16cos 45^{\circ}-24=-12.6862915 m/s$

Change in velocity considering the y component will be

Final velocity-Initial velocity

$\triangle v_y= 16sin 45^{\circ}-0=11.3137085 m/s$

Resultant change in velocity $=\sqrt {(-12.6862915 m/s)^{2}+(11.3137085 m/s)^{2}}=16.9982938 m/s$

Acceleration= change in velocity per unit time hence

$a= \frac {16.9982938}{4}=4.24957345\approx 4.25 m/s^{2}$

5 0

3 years ago

Why doesnt food have energy

Nataly_w [17]

Food has calories which feeds your bones in your body from eating away your muscles, it doesn’t have “energy” on the other hand pop and drinks do.

3 0

3 years ago

Read 2 more answers

If your heart is beating at 76 beats per minute what is the frequency of your heart's oscillations

PSYCHO15rus [73]

That would be a frequency of 1.2666... beats per second. This can be phrased as your heart beats at 1.27 Hz.

4 0

4 years ago

4. A student measures a temperature several times. The readings lie between 29.6 and 30.2 K. This

Alona [7]

Answer:

(read 29.9 plus or minus .3 K)

8 0

3 years ago