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
Tpy6a [65]
1 year ago
10

A child looks at his reflection in a spherical Christmas tree ornament 8.0 cm in diameter in season that the image of his face i

s reduced by 1/2 how far is his face from the ornament
Physics
1 answer:
malfutka [58]1 year ago
8 0

From the information given,

diameter of ornament = 8

radius = diameter/2 = 8/2

radius of curvature, r = 4

Recall,

focal length, f = radius of curvature/2 = 4/2

f = 2

Recall,

magnification = image d

You might be interested in
The sediment deposited by glaciers is called __________ .
nalin [4]

Answer:

The sediment deposited by glaciers is called Glacial deposition.

3 0
3 years ago
Propose a hypothesis for how the position of the ball will affect the amount of its gravitational pull energy
Ray Of Light [21]

<em><u>throwing a ball up initially has a lot of kinetic energy because it is moving upwards ( kinetic energy is energy which a body possesses by virtue of being in motion.) this all then get converted to gravitational potential energy, and for a moment it is stationary before it begins to fall again.  by the time it has returned again, all the gravitational potential energy has turned back into kinetic.</u></em>

4 0
3 years ago
How does NaOH form a basic solution when it dissolves in water
Lubov Fominskaja [6]
It decomposes into CH3COO- and H+ when dissolved in water. The H+ ions react with the water molecules to generate H3O+, making the solution acidic. When NaOH is added to water, it separates into Na+ and OH-. The sodiums have little effect on the solution, but the hydroxyls make it more basic.
8 0
2 years ago
Why do asteroids and comets differ in composition? asteroids and comets formed at different times. asteroids formed inside the f
ExtremeBDS [4]
Im not 100% sure but I beleive the answer is :Because different celestial body's form different shapes and sized of comets and meterors 
8 0
3 years ago
A shopper pushes a grocery cart for a distance of 18m at a constant speed on level ground, against a 37.5N frictional force. he
goldfiish [28.3K]

d = distance to which the grocery cart is pushed = 18 m

f = frictional force = 37.5 N

θ = angle of force below the horizontal = 27.5 deg

W = gravitational force in downward direction

Θ = angle between gravitational force in down direction and displacement in horizontal direction = 90

U = work done on the cart by gravitational force

work done on the cart by gravitational force is given as

U = W d CosΘ

inserting the values

U = W (18) Cos90

U = 0 J


5 0
3 years ago
Other questions:
  • What minerals can Fluorite scratch?
    13·1 answer
  • What is the displacement of the GBS cross-country team if they begin at the school, run 10 miles, and finish back at the school?
    13·1 answer
  • What is electrostatic repulsion?
    9·2 answers
  • A metal ball attached to a spring moves in simple harmonic motion. The amplitude of the ball's motion is 11.0 cm, and the spring
    14·1 answer
  • you are running out and the first mike takes 10 minutes the second mile takes you 20 minutes this is an example of
    11·2 answers
  • What is Newton's universal law of gravitation
    10·1 answer
  • 14. Saeed is pulling a 6 kg heavy rock with an upward force of 40 N but does not succeed to lift it up. What is the magnitude of
    7·1 answer
  • Magnetism is due to the movement of ______.
    8·2 answers
  • The main source of information used by astronomers to learn about objects in space is.
    13·1 answer
  • I need help ASAP!!!! Here’s the question. Stephanie is going to buy an ice cream cone. She can pick a sugar cone or a waffle con
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!