Question

In: Physics

Star A is 3.2 times hotter than Star B. How many times brighter is Star A...

Star A is 3.2 times hotter than Star B. How many times brighter is Star A than Star B?

According to the Stefan-Boltzmann Law, a larger star will appear _________ than a smaller star of the same temperature.

brighter

bluer

redder

fainter

What is the peak wavelength of light coming from a star with a temperature of 4,300 K?
(Submit your answer in nanometers. Remember 1nm = 10^-9 m)

Sitting on the table is a red book and a blue book. Which one is hotter?

The blue book

They are probably the same temperature

The red book

Books are not blackbodies, so they do not emit radiation.

In order for an electron to move from one orbit to another, it must ...

emit or absorb light

increase in temperature

reach absolute zero

hit another electron

Expert Solution

genius_generous answered 2 years ago

Star 2 has a magnitude of m2 = 10.0. Star2 is one hundred times brighter than...

Star 2 has a magnitude of m2 = 10.0. Star2 is one hundred times brighter than Star 1. What is the magnitude Star 1? Give your answer to the nearest integer.

How many times longer than the length of one year is the age of the Earth?

Star X is known to be 30.0 light years away and is 6.50 times larger than...

Star X is known to be 30.0 light years away and is 6.50 times larger than the Sun. You observe that its spectrum peaks at a wavelength of 350 nm. Assume it emits as a blackbody. The Sun has a surface temperature of 5770K. a) What is the surface temperature of Star X? (K) b) What is the ratio of power (luminosity) radiated by Star to that of the Sun? c) Derive an expression for the intensity of light, I,...

A coin is tossed 12 times. a) How many different outcomes are possible? b) What is...

A coin is tossed 12 times. a) How many different outcomes are possible? b) What is the probability of getting exactly 3 heads? c) What is the probability of getting at least 2 heads? d) What is the probability of getting at most 8 heads?

How many times longer than the time constant tau is safe to assume dynamics completed? (assuming...

How many times longer than the time constant tau is safe to assume dynamics completed? (assuming this is talking about order systems...)

PYTHON PROBLEM Given two numbers a and b, count how many times each of the digits...

PYTHON PROBLEM Given two numbers a and b, count how many times each of the digits 0 to 9 occur in all numbers between a and b, inclusive. In order to make your code simpler, implement first the function intToList(n) that takes as input one integer n, and returns a list with the digits of n in the order they appear. For example, intToList(1964) should return [1,9,6,4]. Using the function intToList, implement the function digitsCount(a, b) that returns a list...

How many times of “3” are expected to get in rolling an unloaded dice 50 times?...

How many times of “3” are expected to get in rolling an unloaded dice 50 times? Select one: a. 25 times b. 8 times c. 16.67 times d. 8.33 times

a. How many ways are there to rearrange the letters of Massachusetts? b. How many ways...

a. How many ways are there to rearrange the letters of Massachusetts? b. How many ways are there to rearrange such that M can't be at the beginning and A can't be at the end? c. How many ways are there to have the two t's consecutively (next to each other)?

a) How many moles of Cu are there in 35.7 grams of Cu? b) How many...

a) How many moles of Cu are there in 35.7 grams of Cu? b) How many MOLES of dinitrogen tetrafluoride are present in 3.33 grams of this compound ? c) How many ATOMS of nitrogen are present in 3.29 grams of dinitrogen tetrafluoride ? atoms of nitrogen . d) How many GRAMS of fluorine are present in 6.41×1022 molecules of dinitrogen tetrafluoride ? e) How many GRAMS of dinitrogen tetrafluoride are present in 1.98 moles of this compound ?

It should be tested whether a cube is fair or not. This tells how many times...

It should be tested whether a cube is fair or not. This tells how many times the number 1 appears. With a sample, a dice is thrown 720 times and it showed number one 95 times. The null hypothesis is Ho:p =1/6. Probability of error is specified α=0.05 a)Approximate the binomial distribution according to Moivre-Laplace by normal distribution (without correction ). b) derive a formula for the rejected area or accepted area.