Physics College

When an object is placed 30.0 cm in front of a concave mirror, a real image is formed 60.0 cm
from the mirror's surface. Find the focal length.
Answer=20.0cm

I need the steps I have a final exam and I’m confused can someone help and type it please ?

Answers

Answer 1

Answer:

1 / f = 1 / o + 1 / i = (i + o) / o * 1

f = o * i / (o + i) = 60 * 30 / (60 + 30) = 1800 / 90 = 20 cm

Both the object and image are in positive space for a mirror

Related Questions

If a current uses 31 amperes and has a voltage of 110 volts, how many watts does it dissipate?

Answers

Considering the Watt's law, if a current uses 31 amperes and has a voltage of 110 volts, it dissipates 3,410 Watts.

Current

Current is the physical magnitude that expresses the amount of electricity that flows through a conductor in unit time and is measured in amps.

Voltage

The voltage is the difference between the electrical charge that leaves the source and the one that finally reaches the end of the circuit. It is expressed in volts.

Watt's Law

Watt's Law refers to the electrical power of an electronic component or device and is defined as the power consumed by the load is directly proportional to the voltage supplied and the current flowing through it. The unit of power is the Watt.

Knowing the voltage and current, this law is expressed as:

P = V×I

Power in this case

In this case, you know:

V= 110 voltsI= 31 amperes

Replacing in Watt's Law:

P = 110 volts× 31 amperes

Solving:

P= 3,410 Watt

Finally, if a current uses 31 amperes and has a voltage of 110 volts, it dissipates 3,410 Watts.

Learn more about Watt's Law:

https://brainly.com/question/15267655

https://brainly.com/question/15032960

https://brainly.com/question/10844605

#SPJ1

Which scientific method could I use to test this hypothesis? "If the mass and the volume of an object are known, then its density can be calculated dividing the object's mass by its volume."

Answers

Answer:

Multiple so you can test multiple hypothesis at once

Explanation:

because

Answer:

To test the hypothesis, we need to make an observation or perform an experiment associated with the prediction. For instance, in this case, we would plug the toaster into a different outlet and see if it toasts.

inspired by answer up there

sorry i couldn't add details because think its bad

Hypothesis testing is a formal procedure for investigating our ideas about the world using statistics. It is most often used by scientists to test specific predictions, called hypotheses, that arise from theories.

If the mass of the sun is 2x, at least one planet will fall into the habitable zone if I place a planet in orbits___, ____, ____, and ____, and all planets will orbit the sun successfully.
Pleas help this is Flvs comprehensive science class
6.01 please please help

Answers

So, the complete sentence is If the mass of the sun is 2x, at least one planet will fall into the habitable zone if I place a planet in orbits 84, 1, and 5, and all planets will orbit the sun successfully for the best conditions.

When the mass of the sun is larger, Earth moves around the sun at a faster pace and When the mass of the sun is smaller, Earth moves around the sun at a slower pace.

When Earth is closer to the sun, its orbit becomes faster and When Earth is farther from the sun, its orbit becomes slower.

When Earth is closer to the sun, there will be a hotter climate. A little movement that takes one closer to the sun could lead to a huge impact, as the sun is very hot.

So, it can be concluded that If the mass of the sun is 2x, at least one planet will fall into the habitable zone if I place a planet in orbits 84, 1, and 5, and all planets will orbit the sun successfully for the best conditions.

Learn more about Sun here:

https://brainly.com/question/15837114

#SPJ10

How to put a new command in the command prompt​

Answers

Typing in the commands and instructions and pressing enter will put a new command in the command prompt​.

What is a Command?

This refers to a words or phrase which causes the computer to execute certain tasks or functions.

Typing the exact instruction and entering it will ensure that the chosen tasks are found in the command prompt.

Read more about Command here https://brainly.com/question/25243683

#SPJ1

what will happen to the pressure in a gas if you compressed it into a volume that was one third the size? why?​

Answers

Answer:

Pressure will triple   (Boyle's Law)  

Explanation:

Assuming a constant temperature:  (compressing gases usually raises the temp significantly):

P1V1 = P2V2

P1V1 / V2   = P2      

   Now change V2  to 1/3 V2:

P1V1 / (1/3 V2 ) = P2 / (1/3 )

P1V1/ (1/3 v2 ) = 3 P2                <======= THE PRESSURE WILL TRIPLE

    This is Boyle's Law

After watching the video below and based on your personal experiences, is there a difference
between areas in precision of control? Could there be differences between left and right cortex
based on experience such as handedness or specific skills such as playing a guitar?

Answers

Based on my personal experiences, I believe that there is a difference between areas in precision of control because there are different part of the brain that controls the functions of the body.

What is the difference between left-handed and right-handed people?

From the standpoint of  brain lateralization, differences do exist such as based on experience such as handedness or specific skills such as playing a guitar.

Note that Left-handers are said to have reduced or little lateralized brains, which tells us that the two halves of the brain are little different than as seen in the right-handers.

Therefore, I can say that based on my personal experiences, I believe that there is a difference between areas in precision of control because there are different part of the brain that controls the functions of the body.

Learn more about brain from

https://brainly.com/question/1247675

#SPJ1

Other Questions
Jan eats 2,000 calories daily and expends 1,500 calories. Based on energy balance, how will Jan's weight be affected Which statement best paraphrases this excerpt?O Goble was going to assume that the men who satacross from her, shared her telephone line, and.sometimes played bridge with her at lunch felt thesame; she just needed to help them see their blindspots.O Goble speculated that the wise men she workedwith and sometimes socialized with at lunch sharedher opinions; she only needed to explain to themwhy they were wrong.O Goble decided to think that the capable men sheworked with held the same overall perspective sheheld; she only needed to make them aware of theirfaults.O Goble decided to assume that the intelligent men.she worked and socialized with shared her feelings;she just needed to help them see her perspective. Several paint mixtures are made by mixing blue paint and white paint. Paint Colors Blue Paint White Paint Mixture A 5 cups 12 cups Mixture B 6 cups 6 cups Mixture C 4 cups 12 cups Mixture D 5 cups 6 cups Which mixture has the highest ratio of blue paint to white paint? mixture A mixture B mixture C mixture D Which is true of dependent events? a.) the probability of all dependent events can be calculated using the or formula b.) you can use a two-way frequency table to calculate the conditional probability of events that are dependent. c.) the outcome of one event has no effect on the outcome of a second event. d.) you can find the and probability of dependent events using the formula branliest to correct answer please no guessing The radius of a circle is 7 kilometres. What is the length of a 90 arc? What is the relationship between historical questions and historicalarguments?A. Historical arguments are formed to answer historical questions.B. Historical questions provide vidence to support historicalarguments.C. Historical arguments connect multiple historical questions.D. Historical questions are used to turn historical arguments intoessays. How does the standard order of accounts in the general ledger and in adjustedtrial balances facilitate the preparation of financial statements? URGENT PLEASE HELP If a+b= -5, find |a+b|+5 / |-a-b| How quickly must you file a report with the michigan dnr if property damage exceeds $2,000?. Which of the following is a safe place to pass another vehicle on a two-lane country road? Question 1 of 10What can an author use to give the reader more information about acharacter?OA. Information about the author's previous worksOB. Information about the character's social statusOC. Information about events in a story that are trueOD. Information about how a story's central conflict will be resolved What evidence from the text best represents the central point of Wiesel's Nobel Prize acceptance speech? Mark divided a basket of apples evenly into small bags. The number of bags was equal to the number of apples in each bag. Which could be the total number of apples?A. 25 B. 27 C. 20 D. 18 how many times bigger is the radius of a helium atom then the radius of an alpha particle what is primary care giver Given: AB = CE CD = EFProve: AB = DFProof:1What is the next step in the given proof? Choose the most logical approach. The ability for a muscle to work against a resistance for an extended period of time is. Read the excerpt from an essay about fairy tales.The Grimms fairy tales address the experiences of people who are living in difficult situations. For example, there is the story of Rapunzel. There is also the story of Hansel and Gretel, who had to escape their house in order to find food and were locked out.Which revision would best help the author support the thesis more effectively?The author should explain why Hansel and Gretel were locked out.The author should explain how Rapunzels story fits into the thesis.The author should add one more story as an example to support the thesis.The author should explain why Hansel and Gretel's situation is difficult. There are 7 pieces of pie left over in the cafeteria l. If 5 pieces are apples and 2 are cherry, what fraction of the remaining pieces are cherry? Based on the tone of both excerpts, what can logically be concluded about the authors beliefs about justice system reform?