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Firlakuza [10]
3 years ago
5

Are there tutors on here?

Physics
2 answers:
diamong [38]3 years ago
8 0
Yeah there is tutors on here and other people that can help answer difficult questions
UkoKoshka [18]3 years ago
4 0
Im sure there are but im not one of them sorry ..

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Explain why astronomers use the term "blueshifted" for objects moving toward us and "redshifted" for objects moving away from us
ValentinkaMS [17]
<span>Two of them are "redshift" and "blueshift", which are used to describe an object'smotion toward or away from us in space. Redshift indicates that an object is moving away from us. "Blueshift" is a term that astronomers use to describe an object that is moving toward another object or toward us.</span>
8 0
3 years ago
A person walks 25 m east 35 m north 25 me west and 5 m south. What's the distance traveled?
Zolol [24]
With these questions, drawing it out would always help, the answer for this would be 90m if you add them all up. If it’s displacement, it would be 30m. But since it’s asking for the distance TRAVELED then it’s 90m

ANSWER: 90m

8 0
3 years ago
The orbital period of a satellite is 2 × 106 s and its total radius is 2.5 × 1012 m. The tangential speed of the satellite, writ
LenaWriter [7]

The orbital period of the satellite[T] is given as 2*10^{6} S.

The radius of the satellite is given [R] 2.5*10^{12} m.

we are asked here to calculate the tangential speed of the satellite.

Before going to get the solution first we have understand the tangential speed.

The tangential speed of a satellite is given as the speed required to keep the satellite along the orbit. If satellite speed is less than tangential speed,there is the chance of it falling down towards earth. If it is more,then it will deviate from it orbit and can't stick to the orbit further.In a simple way  the tangential speed is the linear speed of an object in a circular path.

Now we have to calculate the tangential speed [V].

Mathematically the tangential speed [V]   written as -

                                V=\frac{2\pi R}{T}

where T is the time period of the satellite and R is the radius of the satellite.

                        V=\frac{2*3.14*10^{12} }{2*10^{6} }

                               = 7.85*10^{6} m/s

There is also another way through which we can get  the solution as explained below-

We know that the tangential speed of a satellite V=\sqrt{\frac{GM}{R^{2} } }

where G is the gravitational constant and M is the mas of central object.

But we know that g=\frac{GM}{R^{2} }

                               ⇒GM=gR^{2}  where g is the acceleration due to gravity of that central object.


Hence    V=\sqrt{\frac{gR^{2} }{R} }

               ⇒   V=\sqrt{gR}

By knowing the value of g due to that central object we can also calculate its tangential speed.

                           

 




7 0
3 years ago
Read 2 more answers
A disk with a hole has inner radius rin and outer radius rout. the disk is uniformly charged with total charge q. find an expres
Effectus [21]
Here it is.  I used the surface charge density σ as q/Area, and then wrote it out in terms of q at the end

3 0
4 years ago
NEED THIS NOW PLZ!!!
SVETLANKA909090 [29]

Answer: velocity

Explanation: Hope this helps :)

8 0
3 years ago
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