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
jarptica [38.1K]
3 years ago
5

If 10 waves pass a point each second and their wavelength is 30m, what is their speed?

Physics
1 answer:
svet-max [94.6K]3 years ago
5 0

Answer:

300m/s

Explanation:

velocity = frequency(wavelength)

Since 10 waves pass a point each second, frequency is 10

therefore, speed = (10)(30 = 300m/s

You might be interested in
To calculate the change in kinetic energy, you must know the force as a function of _______. The work done by the force causes t
QveST [7]

Answer:

(c) position

Explanation:

From the work-energy theorem, the workdone by a force on a body causes a change in kinetic energy of the body.

But, remember that the work done (W) by a force (F) on a body is the product of the force and the distance d, moved by the body caused by the force. i.e

W = F x d

This distance is a measure of the position of the body at a given instance.

Therefore, the work done is given by the force as a function of distance (or position).

3 0
3 years ago
To move a heavy object, like a refrigerator what could be used to help decrease the frictional force?
Olenka [21]

Answer:

A. Remove everything in the refrigerator to lighten the load.

B. Put a lubricant between the surface of the object and the floor

C. Use round objects, like pencils , to decrease the friction and push the refrigerator over the pencils more easily

Explanation:

Force of friction is a resistance force which acts between two surfaces which are in relative motion. Friction is both boon and bane. Due to friction, we are able to sit, walk etc but also, due to friction there is dissipation of energy. Friction can be reduced by applying lubricants, reducing contact area, reducing the load.

F = μN where N is the normal force which depends on the mass.

Thus, by reducing the load, force of friction can be reduced. Round objects like wheels can also be used. By this the contact area reduces.

8 0
3 years ago
A charge is moving in a magnetic field that points to the left. What direction can the charge move and experience no magnetic fo
tiny-mole [99]
The answer is left and right. 
4 0
3 years ago
Read 2 more answers
Which of the following STEM discoverers is known for inventing the circular saws used in sawmills? Babbitt Edison Gates Hawking
Jet001 [13]
Among the STEM discoverers, the one who is known for the invention of the circular saws that are used in sawmills is Babbitt or better known as Sarah "Tabitha<span>" Babbitt, an American inventor and Shaker tool maker. The answer to this is the first option. Hope this helps.</span>
5 0
3 years ago
Read 2 more answers
As you look out of your dorm window, a flower pot suddenly falls past. The pot is visible for a time t, and the vertical length
ololo11 [35]

Answer:

Explanation:

4 0
3 years ago
Other questions:
  • Firecrackers A and B are 600 m apart. You are standing exactly halfway between them. Your lab partner is 300 m on the other side
    8·1 answer
  • The area of a rectangular loop of wire is 3.6 × 10-3 m2. The loop is placed in a magnetic field that changes from 0.20 T to 1.4
    9·1 answer
  • What is the<br> snowboarder’s kinetic energy<br> when her speed is 5 m/s?
    10·2 answers
  • The left plate of a parallel plate capacitor carries a positive charge Q, and the right plate carries a negative charge -Q. The
    5·1 answer
  • Explain the difference between a fuse and a circuit breaker. If you were designing a circuit for a reading lamp, would you inclu
    14·1 answer
  • An object acted on by three forces moves with constant velocity. One force acting on the object is in the positive xx direction
    14·1 answer
  • 3. A force is exerted on a positively-charged particle that moves the particle in the direction opposite to that of an electric
    7·1 answer
  • Which phrases describe NASA's goals in the coming years? Check all that apply.
    5·2 answers
  • Which formations are created by wave erosion?
    8·1 answer
  • The diagram illustrates the movement of sound waves between an observer and a race car. As the race car drives away from the obs
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!