Describe the Milky Way. What does it contain?

Answers

Answer 1

Answer: It consists of our Solar system. Also, it contains many stars and alot of dust and gases. Our milky way is a galaxy full of amazing stuff, many stars blow up and cause auroras in the sky. If you go to watch the aurora borealis(northern lights) , its amazing and beautiful. The sky turns green and blue and the stars appear.

Answer 2

Answer:

Answer:

The milky way consists of our solar system

Explanation:

edge 2022

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A police car is traveling at a velocity of 18.0 m/s due north, when a car zooms by at a constant velocity of 42.0 m/s due north. After a reaction time of 0.800 s the policeman begins to pursue the speeder with an acceleration of 5.00 m/s2. Including the reaction time, how long does it take for the police car to catch up with the speeder?

Answers

Answer:

t = 10.4 s

Explanation:

given,

velocity of the police car = 18 m/s

reaction time of policeman = 0.8 s

acceleration of the policeman to catch up the speeder = 5 m/s²

time taken to catch the speeder be t₁

distance traveled by the police and the speeder will be same

$D_p = D_s$

$u t_1 + (1)/(2)at_1^2 = u' t_1$

$18* t_1+ 0.5 * 5* t_1^2= 42* t_1$

$2.5 t_1^2 - 24 t_1 = 0$

$(2.5 t_1 - 24)t_1 = 0$

$t_1 = (24)/(2.5)$

t₁ = 9.6 s

total time taken by the policeman

= reaction time + t₁

= 0.8 + 9.6

t = 10.4 s

Total time taken by the policeman to catch the speeder is 10.4 s

How many people can die from an atomic bomb in 1 minute?

Answers

Answer:

no one says it that but

in hirosima their are 70000 people die instant

A derived unit is a combination of fundamental units. Which of the following is an example of a derived unit?a) centimeter (used to measure distance)

b) gram (used to measure mass)

c) cubic centimeter (used to measure volume)

Answers

Answer:

Option (c)

Explanation:

The combination of two or more fundamental units is called derived unit. For example, cubic metre, newton per metre, metre per second.

Thus, cubic centimetre is a derived unit.

C)Cubic centimeter is derived unit here;

Usain bolt can run the 100 m dash in 9.58 s. what is usain's average acceleration during this sprint?

Answers

Assuming Usain Bolt starts from rest (so, its initial velocity is zero), and that his motion is uniformly accelerated, his position at time t is given by
$S(t) = (1)/(2)at^2$
where a is the average acceleration and t the time. In our problem, the distance covered is S=100 m and the time taken is t=9.58 s, therefore the average acceleration can be found by re-arranging the previous formula:
$a= (2S)/(t^2)= ((2)(100 m))/((9.58 s)^2)=2.18 m/s^2$

What does it mean if an experiment is replicable? Why is it important that experiments be replicated?

Answers

If an experiment is replicable it means that the conduction of the experiment can be done multiple times to obtain data and or results. It is important that experiments be replicated because to basically avoid error in obtaining data. And to make sure a particular set of results aren't because of chance or error in measurement or analysis.

An electron microscope is usually used for microorganisms that are _____. too small to be seen with the unaided eye too small to be seen with an optical microscope not possible to observe with any instrument

Answers

Answer;

too small to be seen with an optical microscope

Explanation;

An electron microscope is a type of microscope that is used to observe very tiny specimens whose features can not be observed by other types of microscopes. It uses a beam of electrons to generate an image of a given specimen whose features can be clearly observed and studied.
Electron microscope has very high resolution and magnification as compared to other optical microscope hence can be observed in the study of micro-organisms such as viruses which would be difficult to study their features using optical microscopes.

An electron microscope is usually used for microorganisms that are too small to be seen with the unaided eye. You can adjust the size of the microorganism to see it more clearly by adjusting its magnification lens.

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In a Broadway performance, an 77.0-kg actor swings from a R = 3.65-m-long cable that is horizontal when he starts. At the bottom of his arc, he picks up his 55.0-kg costar in an inelastic collision. What maximum height do they reach after their upward swing?