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alexandr1967 [171]
3 years ago
9

What unit is used to measure wavelength?

Physics
2 answers:
irina [24]3 years ago
5 0

The unit used to measure wavelength is a  Nano-meter

Mashcka [7]3 years ago
3 0

Answer: Nanometer .

Explanation: Hope this helped :)

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When the steel ball drops on the constant velocity cart, it follows a ____ path in the frame of reference fixed to the ____, but
Effectus [21]

Answer:

PARABOLIC, EARTH, VERTICAL, INERTIAL ang PHYSICAL LAWS

Explanation:

In this exercise you are asked to complete the missing words.

When the steel ball falls on the constant speed car, it follows a PARABOLIC path in the reference frame fixed to EARTH, but a VERTICAL straight line in the reference frame of the constant speed car. Without a fixed frame of reference, you cannot tell whether or not you are in an INERTIAL frame of reference. All frames of reference that move at constant speed relative to each other are PHYSICAL LAWS__equivilent__.

\ r

8 0
3 years ago
You charge a parallel-plate capacitor, remove it from the battery, and prevent the wires connected to the plates from touching e
Degger [83]

Answer:

i) C decreases

ii) Q remains constant

iii) E remains constant

iv) ΔV increases

Explanation:

i)

We know, capacitance is given by:

C=\frac{\epsilon_0.A}{d}

\therefore C\propto \frac{1}{d}

<em>In this case as the distance between the plates increases the capacitance decreases while area and permittivity of free space remains constant.</em>

ii)

As the amount of charge has nothing to do with the plate separation in case of an open circuit hence the charge Q remains constant.

iii)

Electric field between the plates is given as:

E=\frac{\sigma}{\epsilon_0}

where:

charge density, \sigma=\frac{Q}{A}

<em>As we know that distance of plate separation cannot affect area of the plate. Charge Q and permittivity are also not affected by it, so E remains constant.</em>

iv)

  • From the basic definition of voltage we know that it is the work done per unit charge to move it through a distance.
  • Here we increase the distance so the work done per unit charge increases.
6 0
3 years ago
Answer each question yes or no. Assume the motions and currents mentioned are along the x axis and fields are in the y direction
Sergeeva-Olga [200]

(a)  Does an electric field exert a force on a stationary charged object? YES ( F = Eq)

(b)  Does a magnetic field do so?- NO ( F= qvB)  

(c)   Does an electric field exert a force on a moving charged object? YES

(d) Does a magnetic field do so? YES ( F = qvB)  

(e) Does an electric field exert a force on a straight current-carrying wire? (  NO)

(f) Does a magnetic field do so? Yes

(g) Does an electric field exert a force on a beam of moving electrons?          Yes  

(h) Does a magnetic field do so?    YeS

To know more about magnetic field    visit : brainly.com/question/10353944

#SPJ4

6 0
2 years ago
A ladybug sits 14 cm from the center of a turntable spinning at 33.33 rpm. The Sun is shining horizontally through the window an
kolbaska11 [484]

Answer:

The maximum velocity is 0.489 m/s

Explanation:

Maximum velocity (v) = angular velocity (w) × radius (r)

w = 33.33 rpm = 33.33×0.1047 = 3.4897 rad/s

r = 14 cm = 14/100 = 0.14 m

v = 3.4897×0.14 = 0.489 m/s

3 0
3 years ago
Explain how you know the car is accelerating when it reaches a curve on the road
horrorfan [7]
Acceleration is a Vector, so speed and direction. If you change your direction you are also changing your acceleration because it's a vector.
6 0
4 years ago
Read 2 more answers
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