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
Luda [366]
2 years ago
7

A source produces 20 crests and 20 troughs in 4 seconds. The second crest is 3 cm away from the first crest.Calculate :

Physics
1 answer:
sineoko [7]2 years ago
3 0

Answer:

Solution given:

No of waves[N] =20crests & 20 troughs

=20waves

Time[T]=4seconds

distance[d]=3cm=0.03m

Now

<u>Wave</u><u> </u><u>length</u><u>=</u>3cm=3 × {10}^{ - 2}m

<u>Frequency</u>=\frac{No of waves}{time}

=\frac{20}{4}=5Hertz

and

Wave speed:wave length×frequency=3 × {10}^{ - 2}m×5=1.5 × {10}^{ - 1} \tt{ {ms}^{ - 1}}.

You might be interested in
Sara wanted to paddle her canoe in the swamp to see alligators. She dragged the 45 Newton canoe for 36 seconds down the boardwal
Dafna11 [192]

Answer:

C .96 meters

Explanation: i just had this question

7 0
3 years ago
A roller coaster car of mass m = 300 kg is released from rest at the top of a 60 m high hill (position A), and rolls with a negl
Triss [41]

Answer:

The principle of conservation of energy and angular momentum

Explanation:

At point A, the car experienced maximum of potential energy

As it moves down the hill, the potential energy decreases while the kinetic energy increases.

The maximum kinetic energy of the car is needed for the attainment of enough centripetal force to help the car move through the loop without falling .

7 0
2 years ago
AM Radio Waves
Komok [63]

Answer:

A

Explanation:

6 0
2 years ago
Read 2 more answers
I am thinking of an unreactive nonmetal and Aisha suggested I use bromine. Is this a good choice? Explain your reasoning. If not
galina1969 [7]
G
Jslapa
Bskalapaoa
Dopa kP al
3 0
3 years ago
At 1 AM, a handsome astronomy instructor has just completed a late night dinner with Jennifer Garner and observes a nearly full
oksano4ka [1.4K]

Answer:

The correct answer is: waxing gibbous, 3 days

Explanation:

Waning quarter moon: hair removal time and bangs cuts.

The growing quarter as a moment of growth, development and evolution. On the contrary, the waning moon is associated with a time of completion, debugging or liquidation of pending issues.

We must take advantage of the influence of the lunar cycle in our favor according to the action we are going to take. If you have trouble growing your hair, try to go to the hairdresser in a crescent moon: it will grow faster. It is no nonsense. Since I cut my bangs to the Cleopatra, the touch-ups last me for another 1-1.5 weeks. As I reviewed the bangs in a growing room, in just a couple of weeks I was returning to the hairdresser.

That affects hair removal. There are many people who take appointments to the beautician to shave by consulting the lunar calendar. The hair removal done as soon as the dwindling is the best because it lasts longer, lasts for another week until the next appointment.

6 0
3 years ago
Other questions:
  • A fisherman's scale stretches 3.7 cm when a 3.5 kg fish hangs from it. (a) what is the spring constant? n/m (b) what will be the
    8·1 answer
  • For a plane mirror,how is the object s related to the distance s?
    6·1 answer
  • A girl is sledding down a slope that is inclined at 30º with respect to the horizontal. The wind is aiding the motion by providi
    13·1 answer
  • The relationship between a cathode and an anode involves
    9·2 answers
  • Using the standard convention "positive is up", what is the sign of the acceleration of a rock you throw up (a) as it is going u
    10·1 answer
  • As a substance is changing from a liquid to a gas, the distance
    5·1 answer
  • Explain, in complete sentences, Issac Newton's Laws Of Motion. Explain how each law is applied in the real world​
    7·2 answers
  • A merry-go-round at a playground is a circular platform that is mounted parallel to the ground and can rotate about an axis that
    10·1 answer
  • A cylindrical wire of radius 2 mm carries a current of 3.0 A. The potential difference between points on the wire that are 44 m
    8·1 answer
  • Which combinations of forces would best move a large, heavy box across a room? Choose the three statements that apply.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!