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
OleMash [197]
3 years ago
9

I have been given this question

Physics
1 answer:
iVinArrow [24]3 years ago
6 0
Frequency is no. of times this wave vibrates or complete its one cycle per unit time. As it vibrates 30000 times per second its frequency is 30000 per second or 30000 Hz [1 Hz = once per second].
You might be interested in
Could someone explain to me how to got the answer B, thank you very much​
Mnenie [13.5K]

Answer:

since -6 lasted for 5 seconds, multiplying both would result in -30

3 lasted for 10 seconds, so multiplying both would give +30

average = ( 30 + (-30) ) / 2

30 -30 is already equal to zero, so the answer should be 0

4 0
3 years ago
Explain how skeletal muscles work in pairs.<br><br> plzzzz answer asap !!
Olegator [25]

Answer:

it holds the bone and helps to move

I don't know if this is right

3 0
3 years ago
A 10 kg ball is held above a building with a height of 30 m. What is the
Darina [25.2K]

Answer: 2940 J

Explanation: solution attached:

PE= mgh

Substitute the values:

PE= 10kg x 9.8 m/s² x 30 m

= 2940 J

6 0
3 years ago
After 16.5 s, a jogger’s displacement is 200.0 m. What is her average velocity in m/s? In km/h?
vivado [14]

Answer:

12.12 m/s

Explanation:

3 0
2 years ago
Plzzz Help
m_a_m_a [10]

Answer:

The electromagnetic waves appear more blue in color.

Explanation:

Doppler's Effect: When a source moves with respect to the observer the frequency of the wave emitted from the source changes. If the source moves away from the observer, the frequency decreases and wavelength increases and vice versa.

Here the light source is moving towards the observer so the frequency will increase and wavelength will decrease. Thus the spectrum will shift towards the blue part. This is known as blue shift. The light wave will appear blue in color.

8 0
3 years ago
Other questions:
  • FOR 50 POINTS! -- Your car is parked at the high school. After school you take off and travel for 27 km towards Iowa City. At th
    5·2 answers
  • HELP!
    15·2 answers
  • If the current in a wire of a cd player is 12.0 ma, how long would it take for 6.50 c of charge to pass a point in this wire? an
    8·1 answer
  • If the gravitational forces exist between all objects in the universe why aren't people affected by the gravitational force exer
    9·1 answer
  • This is a machine that converts electrical energy into mechanical energy.
    6·1 answer
  • Alloys are mixtures of ________.
    9·2 answers
  • Two long, straight, parallel wires 7.2 cm apart carry currents of equal magnitude I. They repel each other with a force per unit
    15·1 answer
  • The actual depth of a shallow pool 1.00 m deep is not the same as the apparent depth seen when you look straight down at the poo
    13·1 answer
  • a 2000 kg car moving down the road runs into a 5000 kg stationary suv. The car applies a force of 1400 n on the suv what is the
    10·1 answer
  • Due Tomorrow Hellpp plzzzz
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!