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yKpoI14uk [10]
3 years ago
8

Which statement correctly describes gravity?

Physics
1 answer:
Advocard [28]3 years ago
5 0

Answer:

a force that attracts matter to the earth

Explanation:

depends on where you are the gravity can be different in space there is no gravity on Earth there is , that's why when you jump you come back down

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True or false: (a) Maxwell's equations apply only to fields that are constant over time.(b) The wave equation can be derived fro
Andre45 [30]

Answer:

(a) False

(b) True

(c) True

(d) True

(e) True

(f) True

Explanation:

(a) Maxwell's equations not only applies to constant fields but it applies to both the fields, i.e., Time variant field as well as Time Invariant field.

(b) We make use of the Modified form of the Ampere's law and Faraday's Law to derive the wave equation.

(c) Electromagnetic waves contains both the electric and magnetic fields and these fields oscillates at an angle of 90^{\circ}C to the direction of wave propagation.

(d) In free space both the electric and magnetic fields are in phase while considering electromagnetic waves.

(e) In free space or vacuum, the expression for the speed of light in terms of electric and magnetic field is given as:

c = \frac{E}{B}

Thus the ratio of the magnitudes of the electric and magnetic field vectors are equal to the speed of light in free space.

(f) In free space or in vacuum the energy density of the electromagnetic wave is divided equally in both the fields and hence are equal.

3 0
3 years ago
A spring with a spring constant of 1200 N/m has a 55-g ball at its end. The energy of the system is 5.5J. What is the amplitude
ad-work [718]
You reach the max amplitude when all the energy is in the spring and the kinetic energy of the ball is zero.

4 0
3 years ago
Read 2 more answers
You desire to observe details of the Statue of Freedom, the sculpture by Thomas Crawford that is the crowning feature of the dom
ad-work [718]

Answer:

the focal length of the eyepiece is 17.23 cm

Explanation:

The computation of the focal length of the eyepiece is shown below:

= Focal length of objective lens ÷ angular magnification magnitude

= 86.3 ÷ -5.01

= 17.23 cm

Hence, the focal length of the eyepiece is 17.23 cm

We simply divided the angular magnification magnitude from the focal length of objective lens so that the focal length of the eyepiece could come

4 0
3 years ago
What is an atmospheric window?
Salsk061 [2.6K]

Answer:

A

Explanation:

Because it is a region in atmosphere that allows an particular wavelength of EMWs to pass through and of the options above only visible light is allowed to pass through

4 0
3 years ago
Is a motor a load that can be found in a circuit?
Marrrta [24]

Answer:

yes you can find a motor in a circuit

6 0
3 years ago
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