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Doss [256]
3 years ago
10

What is the frequency of this wave?

Physics
2 answers:
Musya8 [376]3 years ago
8 0

Answer:

its 2, not 4

Explanation:

brainlyest pleaseeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee

Reptile [31]3 years ago
3 0
It’s 4 because a coiled springs is closely spaced then widen
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Select the three correct parts that make up the cell theory.
Lana71 [14]

Answer:

Options A, D and E....make up cell theory

8 0
3 years ago
Assessing and monitoring your fluid levels will help you optimize your car's _______.
juin [17]

Answer:

A. fuel mileage and longevity          

Explanation:

           For a person purchasing a car, car longevity is one of the main concern. They are also interested in many things such as maximum mileage and service life.

           By properly monitoring and assessing few measures one can maintain the efficiency and longevity of the car. One such thing is by monitoring the liquid levels of the car. Certain liquids like the coolant or radiator water level should be well maintain in proper level in order to run the car economically.

Thus by doing this, one can optimize the car's longevity and the fuel mileage.

Hence the correct option is (A).

3 0
3 years ago
A compressed spring is compressed between a 5kg and 3 kg cart, respectively. When the spring is released, what will be the same
stira [4]

The momentum of the two carts will be the same

Explanation:

First of all, we notice that the system consisting of the two carts + the spring is an isolated system: this means that there are no external forces acting on it.

As a result, the total momentum of the system must be conserved.

Since the spring is at rest, the total momentum of the system after the two carts are released is:

p_f = p_1 + p_2

where

p_1 is the momentum of the 1st cart

p_2 is the momentum of the 2nd cart

The total momentum of the system at the beginning, when the spring is compressed, is zero:

p_i=0

Since the total momentum must be conserved, we have:

p_i = p_f\\0 = p_1 + p_2\\\rightarrow p_2 = -p_1

Which means that the two carts will have equal and opposite momenta.

Learn more about momentum:

brainly.com/question/7973509

brainly.com/question/6573742

brainly.com/question/2370982

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#LearnwithBrainly

4 0
3 years ago
what did classical physics predict about electron flow as a result of light shining on a metal surface?
stiv31 [10]
This looks like the photo electric effect ... classical physics reckoned that if you shone an intense enough light beam on a metal you could get electrons ejected from the metal (maybe in analogy to thermionic emission - heat). It sort of "forgot" about the frequency and photon/particle nature of light.
Enter the "photo electric" effect experiment, Einstein's explanation, and the Nobel committee having an excuse to award E a Nobel prize, even though said prize was probably more for relativity.
8 0
3 years ago
A 0.27 kg rock is projected from the edge of the top of a building with an initial velocity of 11.7 m/s at an angle 58◦ above th
tester [92]

Incomplete question.The complete question is

A 0.27 kg rock is projected from the edge of  the top of a building with an initial velocity of  11.7 m/s at an angle 58  above the horizontal. Due to gravity, the rock strikes the ground at  a horizontal distance of 15.9 m from the base  of the building.  How tall is the building? Assume the  ground is level and that the side of the building is vertical. The acceleration of gravity is  9.8 m/s

Answer:

Total height of the building =6.78 m

Explanation:

v = 11.7 m/s

Horizontal component of velocity = v x cos 58 = 11.7*cos 58 = 6.2 m/s

Total time of flight = Horizontal distance / Horizontal component of velocity = 15.9 / 6.2 = 2.56 sec.

Vertical component of velocity = v x sin 58 = 11.7 x sin 58 = 9.92 m/s

Time taken to reach maximum height = Vertical component of velocity / g = 9.92 / 9.81 = 1.01 sec.

Hence, Time taken to reach ground from maximum height = 2.56 - 1.01 = 1.55 sec.

Hence, Maximum height from ground = 0.5 x g x t^2 = 0.5 x 9.81 x 1.55^2 = 11.78 m

Maximum height from the top of building = 0.5 x 9.81 x 1.01^2 = 5 m

Hence, Total height of the building = 11.78 m - 5 m = 6.78 m

6 0
3 years ago
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