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3 years ago

10

1. The electromagnetic waves described in the reading are different in which two ways:

1 answer:

Kipish [7]3 years ago

8 0

Answer:

D is the answer

Explanation:

But do u know if im right test it out then surprise

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What is plasma made of and what are its properties.<br> why do we need to study plasma in physics

Elis [28]

Plasma is made up of about 90% water. It also has salts and enzymes.

Plasma has:

no fixed shape
no fixed volume
are less dense than liquids and solids

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3 years ago

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What is role of force on the speed of moving object?

aivan3 [116]

Explanation:

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From inside to out, describe the components of an atom. What makes one element's atoms differ from another element's atoms?

Vesna [10]

From the outside is it’s shell, and on the inside is the nucleus (on the middle) which is made or protons (positive charge) and neutrons (neutral charge which is negate and positive) and Lastly there are electrons (negative charge) that orbit the nucleus like planets orbiting the Sun. The shell gets made as the electrons orbit the nucleus.
How do atoms differ from eachother?- their atoms might have different elections, neutrons, and/ or protons inside of it. Plus the location of the elections might be different too.

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4 years ago

You are woken up in the morning on the farm by a rooster. The rooster is located 30 meters away on top of the 5 meter barn house

algol [13]

Complete Question

The complete question is shown on the first uploaded image

Answer:

The velocity is $v = 18.73 \ m/s$

Explanation:

From the question we are told that

The distance of the rooster from farm house is $d = 30 \ m$

The height of the rooster from the ground is $h = 5 \ m$

The angle at which the alarm clock is thrown is $\theta = 53 ^o$

Let the velocity at which the alarm clock is thrown be v

So the horizontal component of v is mathematically represented as

$v_h = v cos \theta$

The distance covered by the alarm clock toward the horizontal direction at velocity v is

$d = v_h$

=> $d = v_h = vcos \theta * t$

=> $vcos \theta * t = 30$

substituting for $\theta$

$v (cos (53)) * t = 30$

=> $v * t = 50$

Considering the motion of the alarm clock in the vertical direction

So the vertical component of v is mathematically represented as

$v_v = vsin \theta$

The distance covered in the vertical direction is mathematically evaluated as follows

From the equation of motion we have

$h = vsin\theta * t - \frac{1}{2} g t^2$

$v* t sin\theta - 4.9t^2 = 5$

Recall $v * t = 50$

So

$50 \ sin \theta -4.9t^2 = 5$

substituting for $\theta$

$50 \ sin (53) -4.9t^2 = 5$

=> $t =\sqrt{7.1289}$

$t =2.673 \ s$

Now

$v * t = 50$

So

$v * 2.673 = 50$

=> $v = 18.73 \ m/s$

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3 years ago

How much would a 70.0-kg person weigh on Mercury?

Agata [3.3K]

AS Weight = w =mg

m= 70kg

g on mercury =3.7 m/s²

so W = (70kg) ( 3.7m/s²)

w=259 kgm/s²

w = 259 N

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4 years ago