What are the primary differences between stars and planets

Answers

Answer 1

Answer: Stars don't have moons and planets do

Answer 2

Answer: stars aren't big enough to emit enough kight and heat meaning they cant cause nuclear reactions

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What is the magnitude of a vector if the x component is - 12 m and the y component is 21m?290m 17m 24m 580m
Determine the amount of potential energy of a 5-newton book that is moved to three different shelves on a bookcase. The height of each shelf is 1.0 meter, 1.5 meters, and 2.0 meters.
Which statement comparing examples of renewable and nonrenewable resources is true? A. Wind is a renewable resource because it can't be used up, but coal is a nonrenewable resource because it will eventually run out. B. Wind is a nonrenewable resource because it can't be used up, but coal is a renewable resource because it will eventually run out. C. Both wind and coal are renewable resources because they will never run out. D. Both wind and coal are nonrenewable resources because they will eventually run out.
A change from one form of energy into another is calleda. gravitational potential energy. b. work. c. conservation of energy. d. an energy transformation.
An element can be identified by its spectrum. True False

What component of Star Wars is possible based on our current understanding of physics?

Answers

A planet can orbit around twin stars...like Luke's home planet.

The storm troopers are actually all 12 year old girls so that explains why they have such bad aim :D

two truckers are traveling directly away from each other at the same speed. If one trucker sounds her horn at a frequency of 206 Hz, and the other trucker hears a frequency of 189 Hz, determine the speed of the trucks. Use the speed of sound as 343 m/s. m/s

Answers

Answer:

v' = 14.76 m/s

Explanation:

given,

frequency of the one truck = 206 Hz

apparent frequency ,f' = 189 Hz

speed of sound, v = 343 m/s

speed of observer (v_o)and source (v_s) = v'

now, using Doppler's effect

$f' = (v-v_o)/(v+v_s)\ f$

$f' = (v- v')/(v+v')\ f$

$189 = (343- v')/(343+v')\ 206$

$0.9174= (343- v')/(343+v')$

314.69 + 0.9174 v' = 343 - v'

1.9174 v' = 28.30

v' = 14.76 m/s

hence, the speed of the truck is equal to 14.76 m/s

The average distance from the sun to Pluto is approximately 6.10 time 10^9 km. How long does it take light from the sun (384,000 km/s) to reach Pluto?

Answers

From the information as given in the question, the transit time
for light from the sun would be

   (6.1 x 10⁹ km) / (3.84 x 10³ km/sec) = 15,885 seconds (rounded).
   (4.4 hours) .
==============================

-- A better figure for Pluto's average distance from the sun is 5.874 x 10⁹ km.

-- " 384,000 km/sec " is about 28% too high for the speed of light.
    A much better figure is 300,000 km/sec.

Using these numbers, the transit time is

   (5.874 x 10⁹ km) / (3 x 10⁵ km/sec) = 19,580 seconds
   (5.4 hours)

In scientific terms, how is power related to work? A.Power is the ability to do work.

B.Power is the force of work over a certain distance.

C.Power is the rate at which work is accomplished.

D.Power is the energy supplied in a force.

Answers

The answer is c. Hope this helps :)

Which of the following would you describe as a change in state?A) melting ice
B) burning paper
C) film being exposed to light
D) a piece of paper being cut in half

Answers

Melting ice is a change in state. (A)

A. Melting ice, because it is changing water from its solid state (ice) to its liquid state.

When electrons are moving we call it _______

Answers

It *can* be called "Dynamic Electricity".

Hope that helps a little bit XD.

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What is a limitation of the electron cloud model theory that a law about electrons would not have?

What is the potential energy of a 2-kilogram potted plant that is on a 1 meter-high plant stand?