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3 years ago

What’s the origin of a meteor shower?

Physics

1 answer:

Bogdan [553]3 years ago

6 0

Answer: I hope this helps I read this in a book once

Explanation:

Shower meteors come from the dust released by comets as they travel through our solar system. The dust spreads out along the comet's orbit and forms an elliptical trail of debris that passes around the sun and crosses the orbits of the planets.

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Three point charges are positioned on the x axis. If the charges and corresponding positions are +32 µC at x = 0, +20 µC at x =

Crank

Answer:

Fnet = 12 N

Explanation:

Force on a point charge due to another point charge = kq1q2 / d^2

Force on +32uC = due to + 20uC + due to -60uC

where uC = 1 x 10^-6 C and k = 9 x 10^9 N m^2 / C^2

Net Force =

$= \frac{1}{4\pi \epsilon _0} [\frac{32 \times 10^-^6 \times60\times10^-^6}{(60/100)^2}-\frac{32 \times 10^-^6 \times20\times10^-^6}{ (40/100)^2} ]$

$F_{net}=9 \times10^9\times 10^-^1^2[\frac{32\times60\times10^4}{60\times60} -\frac{32\times20\times10^4}{40\times40} ]$

$=90[32(\frac{80-60}{60\times 80} )]\\\\=90\times32\times0.004167\\\\=12N$

Fnet = 12 N

8 0

4 years ago

A uniform disk of mass 21 kg, thickness 0.5 m, and radius 0.6 m is located at the origin, oriented with its axis along the y axi

goldenfox [79]

Answer:

$29.69 kgm^2/s$

Explanation:

So suppose the axis of rotation is perpendicular to the surface of the disk, then the moment of inertia can be calculated as the following:

$I = mr^2/2 = 21 * 0.6^2/2 = 3.78 kgm^2$

We can convert the rotation speed in term of 0.8 seconds per revolution to the angular velocity knowing that each revolution is 2π

$\omega = 2\pi / 0.8 = 7.85 rad/s$

Then the rotational angular momentum of the disk is:

$\omega I = 7.85 * 3.78 = 29.69 kgm^2/s$

In case the axis of rotation is parallel with the surface, the moment of inertia would have a formula of:

$I = m(3r^2 + h^2)/12 = 21*(3*0.6^2 + 0.5^2)/12 = 2.3275 kg m^2$

5 0

3 years ago

When designing an experiment a benefit of larger sample sizes would be more____. A.variables B.representative data C.time per gr

castortr0y [4]

<span>When designing an experiment a benefit of larger sample sizes would be more representative data. This larger sample size would lead to perfect result. The correct option among all the options that are given in the question is the second option or option "B". I hope the answer comes to your help.</span>

5 0

3 years ago

Read 2 more answers

PLEASE HELP 3 + 2 ∙ 4 = 3 + (2 ∙ 4) True False

Studentka2010 [4]

The answer is true. According to PEMDAS, Parentheses and multiplication goes first in this equation. Since the multiplication sign is in between parenthesis, the order of operation is the same

4 0

4 years ago

A potential drop of 50. volts is measured across a

ollegr [7]

Answer:

Power, P is equal to 10 watts.

Explanation:

Given the following parameters;

Voltage drop, V = 50volts.

Resistance, R = 250ohms.

Power, P =?

The power developed in an electrical circuit is given by;

$P = IV$ ......equation 1

But we also know that;

Ohm's law states that at constant temperature, the current flowing in an electrical circuit is directly proportional to the voltage applied across the two points and inversely proportional to the resistance in the electrical circuit.

Mathematically, V = IR

Making I the subject of formula;

I = V/R

Substituting into equation 1;

$P = (V²)/R$

P = (50²)/250

P = 2500/250

P = 10 watts.

5 0

3 years ago