PHYSICS HIGH SCHOOL

What is the focal length of a lens?A.
the distance between the object and the image
B.
distance between the object and the center of the lens
C.
the distance between the center of the lens and the image
D.
the distance between the focal point and the center of the lens

Answers

Answer 1
Answer:

Answer is D.the distance between the focal point and the center of the lens.
Answer 2
Answer:

Answer:

it is B i took the test and got it wrong when someone said it was A

Explanation:

it is the one that says the sizing of the objects will appear unusual

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The frequency of a purple photon is 7.14×10^14 Hz. Which equation should be used to solve for the wavelength of the photon?

Answers

Answer:

420.17 nm

Explanation:

Given:

f = 7.14 × 10¹⁴Hz

c = 3 × 10⁸ m/s

c = fλ

λ = c/f

  =(3*10^8)/(7.14*10^(14))

  =(3)/(7.14)*10^((8-14))

  =0.42017*10^(-6)

  =420.17*10^(-9)

  = 420.17 nm

Elle is playing with a ball in a bus that moves in a straight line with constant velocity. What can you say about the motion of the ball in the moving bus if Elle throws the ball vertically upwards?a the ball will fall back to her

b the ball will land ahead of her

c the ball will land behind her

d the ball will move to the right

Answers

Given that they are all on the same bus that is travelling in a straight line at the same velocity, when Elle throws the ball directly upwards, the ball will simply fall back to her. This is because the bus, Elle, and the ball are all travelling in the same direction and at the same speed. Among the choices, the correct answer is A.

Answer:

the ball will fall back to her

Explanation:

What large gymnosperm is found in the tropics?

Answers

Gymnosperms are a plant group that share unique characteristics: they bear seeds however the seeds do not develop within an ovary. One large gymnosperm  that grows in tropical regions, it is named as conifers. Conifers have about 558 living species. It is the most ecologically and economically essential group. Most conifers are trees which bear seeds within a cone.

The distance from one Crest to the next cest is the

Answers

Hi


The distance from one Crest to the next crest is the wavelength


I hope that's help !

The image formed by a convex spherical mirror will always bea. inverted and larger than the object.
b. upright and larger than the object.
c. inverted and smaller than the object.
d. upright and smaller than the object.

Answers



a. inverted and larger than the object.

A mirror is used to see your own reflection. Earlier in the days, people would use a still water to see their reflection. It is basically used for grooming. Spherical mirrors have been used by earlier mathematicians and physicist to conduct experiments related to geometry. 

Penn Foster STudents:  d. upright and smaller than the object.

One property that makes electromagnetic waves differ from other types of waves is that they canmove particles in a medium

travel in a vacuum

transfer energy

create a disturbance

Answers

Create a disturbance
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