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3 years ago

11

The Milky Way galaxy is believed to be composed of over 200billion stars and to have a diameter of over 100000 light years. What

component of the Milky Way galaxy accounts for most of its mass

1 answer:

Makovka662 [10]3 years ago

5 0

Stars/black holes

Hope this Helps

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Austin performed an experiment. He put 100mL of vegetable oil (density 0.9 g/ml) in a graduated cylinder. He put a 100g mass of

Grace [21]

Answer:

Explanation:

mass of displaced oil = 11 x .9

= 9.9 gm

9.9 x 10⁻³ kg

weight of displaced oil = 9.9 x 9.81 x 10⁻³ N

= .097 N .

buoyant force by oil = .097 N

weight of unknown metal = .1 x 9.8

= .98 N .

weight of metal in oil = .98 - .097

= .883 N .

=

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3 years ago

A thin layer of oil (n = 1.38) on the ocean surface for thousands of miles. As an inspector, you are flying over the ocean surfa

Eddi Din [679]

Answer:

Explanation:

The picture attached shows all the necessary explanations

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3 years ago

True or False? In an RL circuit, the larger the value of R (i.e. the resistance of the circuit), the longer it takes the circuit

Luba_88 [7]

Answer:

1.False

2.4 E

Explanation:

1.We have to find the statement is true or false.

We know that

Time constant, $\tau=\frac{L}{R}$

Time constant is inversely proportional to resistance R .It means when R increases then time constant decreases when R decrease then the time constant decreases.

Statement:The larger the value of R ,the longer it takes the circuit to reach its final steady- state value

It is false.

2.Energy stored in inductor,E= $\frac{1}{2}LI^2$

When I'=2I

Then, $E'=\frac{1}{2}L(2I)^2=\frac{1}{2}LI^2\times 4=4 E$

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It has been proposed that extending a long conducting wire from a spacecraft (a "tether") could be used for a variety of applica

denis23 [38]

Complete Question

The complete question is shown on the first uploaded image

Answer:

The angle between shuttle's velocity and the Earth's field is $\theta = 24.2^o$

Explanation:

From the question we are told that

The length of eire let out is $L = 250 \ m$

The emf generated is $\epsilon = 40 V$

The earth magnetic field is $B = 5.0 *10^{-5} T$

The speed of the shuttle and tether is $v = 7.80 * 10^3 \ m/s$

The emf generated is mathematically represented as

$\epsilon = L\ v\ B\ sin \ \theta$

making $\theta$ the subject of the formula

$\theta = sin ^{-1}[ \frac{\epsilon}{L * B *v} ]$

substituting values

$\theta = sin ^{-1}[ \frac{40}{250 * (5*10^{-5}) *(7.80 *10^{3})} ]$

$\theta = 24.2^o$

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3 years ago

Separate sheet of paper for your answer.

evablogger [386]

Answer:

I think its B. Please keep in mind that I could be wrong.

Explanation:

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3 years ago