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3 years ago

How to use heliocentric in your own sentence?

Physics

1 answer:

Alexus [3.1K]3 years ago

8 0

According to the heliocentric theory, the sun is the center of everything in the universe.

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Two stones are thrown vertically upward from the ground, one with three times the initial speed of the other. Assume free fall.

maw [93]

A) Vf = Vo - g*t
Vf = 0
g = 9.8 m/s^2

Vo = g* t => t up = Vo / g

t total = 2*t = 2*Vo / g

t slow = 2*Vo / g

t fast = 2*[3Vo] / g = 6Vo / g => Vo = g * t fast / 6 = 9.8 m/s^2 * 8.00 s / 6 = 13.07 m/s = Vo

t slow = 2 * 13.07 m/s / 9.8 m/s^2 = 2.67 s.

B)

Vf ^2 = Vo ^2 - 2gy

Vf = 0 => Vo ^2 = 2gy

Vo ^2 = 2gH

[3Vo]^2 = 2gy

=> [3Vo]^2 / Vo^2 = 2gy / 2gH
=> 9 = y/H => y = 9H

6 0

3 years ago

Two charged particles separated by a distance of = 3 and experienced electrostatic forces of = 60 . What would be this force if

klemol [59]

Answer: 539.4 N

Explanation:

Let's begin by explaining that Coulomb's Law establishes the following:

"The electrostatic force $F_{E}$ between two point charges $q_{1}$ and $q_{2}$ is proportional to the product of the charges and inversely proportional to the square of the distance $d$ that separates them, and has the direction of the line that joins them"

What is written above is expressed mathematically as follows:

$F_{E}= K\frac{q_{1}.q_{2}}{d^{2}}$ (1)

Where:

$F_{E}=60 N$ is the electrostatic force

$K=8.99(10)^{9} Nm^{2}/C^{2}$ is the Coulomb's constant

$q_{1}$ and $q_{2}$ are the electric charges

$d=3 m$ is the separation distance between the charges

Then:

$60 N= 8.99(10)^{9} Nm^{2}/C^{2}\frac{q_{1}.q_{2}}{(3 m)^{2}}$ (2)

Isolating $q_{1}$ and $q_{2}$ :

$q_{1}q_{2}=6(10)^{-8} C^{2}$ (3)

Now, if we keep the same charges but we decrease the distance to $d_{1}=1 m$ , (1) is rewritten as:

$F_{E}=8.99(10)^{9} Nm^{2}/C^{2}\frac{6(10)^{-8} C^{2}}{(1 m)^{2}}$ (4)

Then, the new electrostatic force will be:

$F_{E}= 539.4 N$ (5) As we can see, the electrostatic force is increased when we decrease the distance between the charges.

4 0

3 years ago

Maggie completed a 10000-m race at an average speed of 160

Gala2k [10]

Answer: 200m/min

Explanation:

Divide 10000m by 160m/min, you will get the answer 62.5. You then subtract 12.5 from 62.5 to understand what you will need your answer for the other person’s speed will be. 10000m divided by 50min is 200m/min.

3 0

4 years ago

g In Example 31.1, Select one: a. Only this is correct. I. the induced magnitude emf is calculated by taking the absolute value

Aleksandr-060686 [28]

Answer:

Check the explanation

Explanation:

(31)

induced EMF depends on change in angle

$E=BA\frac{d(cos\theta )}{dt}$