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4 years ago

What important discovery did physicists michael faraday and joseph henry make?

Physics

1 answer:

Evgen [1.6K]4 years ago

4 0

Both michael faraday and joseph henry had give law of electromagnetic induction

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A "synchronous" satellite is put in orbit about a planet to always remain above the same point on the planet’s equator. The plan

zepelin [54]

Answer:

h = 1.014 x $10^{8}$ m

Explanation:

Given that,

The planet rotates once every 10.2 h

Therefore, in one hour it would take 1/10.2 rev/h

The rotational speed of the planet

= 0.098 rev/h

Converting into seconds

= 2.72 x $10^{-5}$ rev/s

Converting to radians, the rotational angular velocity is

ω = 1.709 x $10^{-4}$ rad/s

The mass of the planet, M = 2.2 x $10^{27}$ Kg

Radius of the planet, R = 6.99 x $10^{7}$ m

Gravitational constant, G = 6.67 x $10^{-11}$ Nm²/Kg²

To find the height 'h' of the synchronous orbit above the planet surface,

The orbital velocity of the planet is given by the expression

V = $\sqrt{\frac{GM}{R + h} }$

Since

V = (R+h)ω

Substituting in the above equation

(R+h)ω = $\sqrt{\frac{GM}{R + h} }$

Squaring on both sides

{(R+h)ω}² = ${\frac{GM}{R + h} }$

(R+h)³ = ${\frac{GM}{w^{2}}}$

Solving for h

h = $\sqrt[3]{{\frac{GM}{w^{2}}}}$ - R

Substituting the values in the above equation

h = $\sqrt[3]{\frac{6.67X10^{-11}X2.2X10^{27} }{(1.709X10 ^{-4})^{2} }}$ m

h = 1.014 x $10^{8}$ m

So, the height of the synchronous orbit above the surface is 1.014 x $10^{8}$ m

7 0

3 years ago

A 29.0 g ball is fired horizontally with initial speed v0 toward a 100 g ball that is hanging motionless from a 1.0 m long strin

balandron [24]

Answer:

$v_0 = 5.89 m/s$

Explanation:

As we know that the ball swings out to maximum angle of 50 degree

so we will have use energy conservation to find the initial speed of the ball

$\frac{1}{2}mv^2 = mgL(1 - cos\theta)$

$v = \sqrt{2gL(1 - cos\theta)}$

so we have

$v = \sqrt{2(9.81)(1)(1 - cos50)}$

$v = 2.65 m/s$

now we can use momentum conservation for this collision

$m_1v_0 = m_1v_{1f} + m_2v_{2f}$

$29 v_0 = 29v_{1f} + 100(2.65)$

$v_0 = v_{1f} + 9.14$

also we know that it is elastic collision

so we will have

$2.65 - v_{1f} = v_0$

now from above two equations we have

$v_0 = 5.89 m/s$

7 0

3 years ago

Deep ocean currents form when denser ocean water sinks. The flow of deep currents is also affected by the Coriolis effect and by

patriot [66]

What did his mother tell him about the worm

4 0

3 years ago

A box that has a mass of 80 kg slides down a ramp with a 30 degree angle. The free-body diagram shows the forces acting on the b

zimovet [89]

The first one I believe

8 0

3 years ago

Read 2 more answers

What changes dead plants and animals into ammonia compounds?

lapo4ka [179]

Nitrogen fixing bacteria changes dead plants and animals into ammonia compounds.

<h2>What is nitrogen fixation?</h2>

Atmospheric nitrogen is converted into nitrogen oxides by the action of lightning, which helps its incorporation into the soil.

<h3>Characteristics of Nitrogen fixing bacteria</h3>

Nitrogen is fixed by these bacteria and other prokaryotes through various metabolic processes, which convert it into different usable compounds, such as ammonia (NH3) and ammonium ion (NH4+).

These microorganisms can be found in soil and water, or as plant symbionts.

Therefore, we can conclude that nitrogen fixing bacteria fix nitrogen from the air, that is, they originate soluble compounds by plants, such as ammonia.

Learn more about nitrogen fixation here: brainly.com/question/14726009

7 0

2 years ago