1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
borishaifa [10]
3 years ago
11

Which of the following represents an upright image? A. -do B. +m C. -m D. +do

Physics
1 answer:
Tom [10]3 years ago
5 0

Answer:

B. +m

Explanation:

The magnification of an image is defined as the ratio between the size of the image and of the object:

m = \frac{y'}{y}

where we have

y' = size of the image

y = size of the object

There are two possible situations:

- When m is positive, y' has same sign as y: this means that the image image is upright

- When m is negative, y' has opposite sign to y: this means that the image is upside down

Therefore, the correct option representing an upright image is

B. +m

You might be interested in
A gas undergoes a process in a piston–cylinder assembly during which the pressure-specific volume relation is pv1.3 = constant.
Galina-37 [17]

Answer:

Change in specific internal Energy=250\ \rm Btu/lb

Explanation:

Given:

  • Mass of the gas, m=0.4 lb
  • Initial pressure and volume are p_1=160\ \rm lbf/in^2\ and\ v_1=1\ \rm ft^3\\
  • Final pressure and temperature are p_1=480\ \rm lbf/in^2
  • Heat transfer from the gas is 2.1 Btu

Since the process is isotropic we have

p_1v_1^{1.3}=p_2v_2^{1.3}\\160\times 1^{1.3}=480\times v_2^{1.3}\\v_2=0.43\ \rm ft^3\\

So the final volume of the gas is calculated.

Work in any isotropic is given by w

w=\dfrac{p_1v_1-P_2v_2}{n-1}\\\\w=\dfrac{160\times1-480\times0.43}{1.3-1}\\w=-154.67\ \rm Btu\\

According to the first law of thermodynamics we have

Q=\Delta U+w\\-2.1=\Delta U-154.67\\\Delta U=152.56\ \rm Btu\\

So the Specific Internal Change is given by

\Delta u=\dfrac{\Delta U}{m}\\\Delta u=\dfrac{152.56}{0.4}\\\Delta u=250\ \rm Btu/lb

So the specific Change in Internal energy is calculated.

6 0
3 years ago
The amount of matter in an object is called its
Serga [27]
The amount of matter in an object is called its, mass. How much the mass weights would be referred to as weight
7 0
3 years ago
Read 2 more answers
A book is pushed across the table by a student. The student stops pushing on the book and the book slows down and stops. The for
VashaNatasha [74]
A. inertia 

Because it has to do with the motion of something, especially if it changes its pace. In this example, the book's motion, when sliding on the table, decreased because of less force being given off from the student. 
3 0
3 years ago
Read 2 more answers
How is most of the electricity we use at home generated?
Sveta_85 [38]
Nuclear power plants, wind farms, water farms, and geothermal heating
3 0
3 years ago
When we touch things, how close do atoms get together? Or does anything touch anything else?? Full answer Please 50 - 100 words
kkurt [141]
Well, im pretty sure that when we do touch eachother, the atoms themselves are touching. idk if this is what ur looking for but hope this helps.
3 0
3 years ago
Read 2 more answers
Other questions:
  • Walking converts what type of energy into mechanical energy
    14·2 answers
  • The passengers in a roller coaster car feel 50% heavier than their true weight as the car goes through a dip with a 20 m radius
    9·2 answers
  • You are driving downhill on a rural road with a 3% grade at a speed of 45 mph. While playing on the side of the road, a child ac
    8·1 answer
  • A covalent bond in which electrons are shared equally is called a
    14·1 answer
  • During combustion reactions, explain why the energy of the reactants must exceed the total energy of the products​
    6·1 answer
  • What is the difference between Helium3, and Helium?
    14·1 answer
  • Ifa truck starts from rest and it has acceleration of 4 m/s for 5 second
    8·1 answer
  • Calculate the potential energy stored in an object of mass 50 kg at a height of 20 m from the
    8·1 answer
  • An oil droplet is levitated and held at rest in a region where the electric field is 1.4x104 N/C directed vertically downwards.
    7·1 answer
  • Need help ASAP, 1 MC
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!