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
Ugo [173]
3 years ago
15

An object is 25.0 cm from the mirror, its height is 5.0 cm, and focal length is 8.0 cm. What is the distance from the image to t

he mirror? 0.085 cm 1.6 cm 9.8 cm 12 cm
Physics
2 answers:
Vaselesa [24]3 years ago
8 0
The equation needed to solve the problem is
\frac{1}{f} = \frac{1}{d_{o}} + \frac{1}{d_{i}}
where
f = focal length, 8.0 cm
do = object distance, 25.0 cm
di = image distance

Therefore
\frac{1}{8} = \frac{1}{25} + \frac{1}{d_{i}} \\ 0.125 = 0.04 +  \frac{1}{d_{i}} \\  \frac{1}{d_{i}} =0.125-0.04=0.085\\d_{i}= \frac{1}{0.085} =11.765 \, cm
The closest answer is 12 cm.

Answer: 12 cm


Oksana_A [137]3 years ago
3 0
1.) Use the formula to solve - 
             1/f = 1/do + 1/di; Where f = focal length; 1/do + 1/di
             1/f = 1/do + di
            1/8 = 1/25 + 1/?
          .125 = .04 + 1/di
   .125 -.04 = 1/di (transferred .04 to the left side of the equation)
       .085/1 = 1/di
.085di/.085 = 1/.085 (multiplied both sides by di and divided both sides by .085)
               di = 11.76 or 12
2.) Therefore, 12 cm is the distance from the image to the mirror
You might be interested in
A car travels a distance of 540km in 6 hours. What speed did it travel at?
maria [59]

Speed v = distance travelled / time taken

v = d / t

v =  540 / 60h

v =   9 km /h

4 0
3 years ago
Read 2 more answers
A bike travels 4 miles in half an hour at what speed
Sloan [31]
8 miles per hour
because if it is moving at 4 miles every half hour that means you have to multiply it by two to get it in miles per hour and we all know that 4 times 2 is 8 so it would be 8 miles per hour =)
5 0
3 years ago
Read 2 more answers
An elevator has a mass of 1000 Kg. What force is needed to accelerate it upward at a rate of 2 m/s/s?
zubka84 [21]

The force needed to accelerate an elevator upward at a rate of 2 m / s^{2} is 2000 N or 2 kN.

<u>Explanation: </u>

As per Newton's second law of motion, an object's acceleration is directly proportional to the external unbalanced force acting on it and inversely proportional to the mass of the object.

As the object given here is an elevator with mass 1000 kg and the acceleration is given as 2 m / s^{2}, the force needed to accelerate it can be obtained by taking the product of mass and acceleration.

                  \text {Force}=\text {Mass} \times \text {Acceleration}

                  \text { Force }=1000 \times 2=2000 \mathrm{N}=2 \text { kilo Newon }

So 2000 N or 2 kN amount of force is needed to accelerate the elevator upward at a rate of 2 m / s^{2}.

3 0
3 years ago
Consider an oil droplet of mass m and charge q. We want to determine the charge on the droplet in a Millikan-type experiment. We
Katen [24]

Answer:

q=\frac{mg}{E_o}              

Explanation:

Given:

Charge = <em>q</em>

Electric field strength =E_o

weight of the droplet = <em>mg</em>

The charge is suspended motionless. This is because the electric force on the charge is balanced by the weight of the droplet.

electric force on charged droplet, F=qE_o

This is balanced by the weight, mg

Equating the two:

qE_o=mg\\\Rightarrow q=\frac{mg}{E_o}

4 0
3 years ago
A 52 kg child on a swing is travelling at 6 m/s . What is his gravitational potential energy if he has 1000 J of the mechanical
DiKsa [7]

Answer:

The correct answer is "64 J".

Explanation:

The given values are:

Mass,

m = 52 kg

Velocity,

v = 6 m/s

Mechanical energy,

= 1000 J

Now,

The gravitational potential energy will be:

⇒ P.E=1000-\frac{1}{2}mv^2

           =1000-\frac{1}{2}\times 52\times (6)^2

           =1000-26\times 36

           =1000-936

           =64 \ J

7 0
3 years ago
Other questions:
  • Willing to give a brainliest!
    6·2 answers
  • Which form of nitrogen can immediately be used by plants
    11·1 answer
  • A car of mass 940.0 kg accelerates away from an intersection on a horizontal road. When the car speed is 42.5 km/hr (11.8 m/s),
    9·2 answers
  • A 60​-m-long chain hangs vertically from a cylinder attached to a winch. Assume there is no friction in the system and that the
    7·1 answer
  • A hot-air balloon and its basket are accelerating upward at 0.265 m/s2, propelled by a net upward force of 688 N. A rope of negl
    13·1 answer
  • A tennis ball with a velocity of +10.0 m/s to the right is thrown perpendicularly at a wall. After striking the wall, the ball r
    5·1 answer
  • Of the 5000 species of mammals, 250 species are carnivorous. What is the ratio of carnivorous to mammals?
    8·1 answer
  • The area around a charged object that can exert a force on other charged objects is an electric ___
    15·1 answer
  • Which of the following situations describes a change that will result in a new kind of matter with different characteristics?
    11·1 answer
  • A cheetah running initially at a velocity of 20 m/s accelerates
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!