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mario62 [17]
3 years ago
11

Will mark brainlest helpp!!!!!!​

Physics
2 answers:
cestrela7 [59]3 years ago
7 0
  • initial velocity=u=0m/s
  • Final velocity=60km/h=v

Convert to m/s

\\ \Large\sf\longmapsto v=60\times \dfrac{5}{18}=16.6m/s

  • Time=t=5min=5×60=300s

We know

\boxed{\Large{\sf Acceleration=\dfrac{v-u}{t}}}

\\ \Large\sf\longmapsto Acceleration=\dfrac{16.6-0}{300}

\\ \Large\sf\longmapsto Acceleration=\dfrac{16.6}{300}

\\ \Large\sf\longmapsto Acceleration=0.05m/s^2

  • Distance=s

Using second equation of kinematics

\boxed{\Large{\sf s=ut+\dfrac{1}{2}at^2}}

\\ \Large\sf\longmapsto s=0(300)+\dfrac{1}{2}(0.05)(300)^2

\\ \Large\sf\longmapsto s=0.05\times 150^2

\\ \Large\sf\longmapsto s=0.05\times 22500

\\ \Large\sf\longmapsto s=1125m

Luda [366]3 years ago
6 0

Answer:

I don't know if it is correct or not.

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Thanks + BRAINLIST <br><br> Need correct answer ASAP
aliina [53]

Answer:

The options are not shown, so it is kinda hard to give you the exact answer.

But i can try to give a general explanation on the topic.

Interference happens when two waves interact between them. We usually use waves with the same wavelength and same phase.

There are two "main" types of interference:

Destructive interference: Happens when the peak of one wave and the trough of the other wave happen in the same place, then when we add these waves, we have a subtraction, and then the amplitude of the resultant wave is smaller than the amplitudes of the original waves (if both initial waves have the same amplitude, then the amplitude of the resultant wave in that position is zero).

Constructive interference: Similar to the previous case, but now the two waves have the peaks or toughs in the same position, then when we add the waves, we have an addition in the amplitude, then the amplitude of the resultant wave will be larger than the amplitudes of the initial waves.

Then if you are looking for constructive interference, you need to look for an option where the peaks of the waves coincide. For example, in the top image we can see, at the top, a wave with an amplitude of 2 units.

And at the bottom a wave with an amplitude of 1 unit.

We also can see that the peaks (and the tough) are in the same place, then we will have constructive interference. Then the amplitude of the resultant wave will be equal to the sum of the amplitudes of the initial waves (2 and 1)

Then the amplitude of the resultant wave is 2 units + 1 unit = 3 units.

5 0
3 years ago
What wavelength ? should the astrophysicist look for to detect a transition of an electron from the n=7 to the n=3 level?
Veseljchak [2.6K]
Using the Debroglies equation,energy can be found,as 1.9773*10*-9
then, energy* wave length= hc
c is the speed of light and is the planks constant.
wave length =1.006*10*-16 m
7 0
3 years ago
I need help real quick. Please help me!!
dimaraw [331]
<h3><u>Answer;</u></h3>

D) Standing wave

<h3><u>Explanation;</u></h3>
  • Standing wave also called stationary wave  is a wave which oscillates in time but whose peak amplitude profile does not move in space.
  • A standing wave pattern is a vibrational pattern created within a medium when the vibrational frequency of the source causes reflected waves from one end of the medium to interfere with incident waves from the source.
  • Examples of standing waves include the vibration of a violin string and electron orbitals in an atom.
4 0
3 years ago
A drop of oil of volume 10m it spread out on water to make a circular firm of radius 10m calculate the tickness of the firm
Effectus [21]

Answer:

h = 3.1 cm

Explanation:

Given that,

The volume of a oil drop, V = 10 m

Radius, r = 10 m

We need to find the thickness of the film. The film is in the form of a cylinder whose volume is as follows :

V=\pi r^2 h\\\\h=\dfrac{V}{\pi r^2}\\\\h=\dfrac{10}{\pi \times 10^2}\\\\h=0.031\ m\\\\h=3.1\ cm

So, the thickness of the film is equal to 3.1 cm.

8 0
2 years ago
At what point will the electric field of a charged object be strongest?
puteri [66]

Answer:

The answer is C because they have to be close to be able to interact

7 0
2 years ago
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