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kirill115 [55]
3 years ago
9

A ball is dropped from rest from the top of a building and strikes the ground with a speed . from ground level, a second ball is

thrown straight upward at the same instant that the first ball is dropped. the initial speed of the second ball is , the same speed with which the first ball eventually strikes the ground. ignoring air resistance, decide whether the balls cross paths
Physics
1 answer:
Verizon [17]3 years ago
5 0
Unless the second ball's speed is twice the amount of the first ball's no they will not cross paths
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If a reaction is exothermic and produces large quantities of heat reaching equilibrium, its equilibrium constant will be
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The equilibrium constant will be lowered and the equilibrium will shift to the left if the heat being produced is not removed.
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The net flow of energy into and out of the earths system is referred to as energy budget. which type of energy is lost in space
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D not 100% sure though.
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A child is sliding down a slide at the playground. is the mechanical energy conserved. why or why not.
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C: the mechanical energy isn't conserved. Some energy was lost to friction. 
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Light in the air is incident at an angle to the surface of (12.0 A) degrees on a piece of glass with an index of refraction of (
Orlov [11]

The question is incomplete. You dis not provide values for A and B. Here is the complete question

Light in the air is incident at an angle to a surface of (12.0 + A) degrees on a piece of glass with an index of refraction of (1.10 + (B/100)). What is the angle between the surface and the light ray once in the glass? Give your answer in degrees and rounded to three significant figures.

A = 12

B = 18

Answer:

18.5⁰

Explanation:

Angle of incidence i = 12.0 + A

A = 12

= 12.0 + 12

= 14

Refractive index u = 1.10 + B/100

= 1.10 + 18/100

= 1.10 + 0.18

= 1.28

We then find the angle of refraction index u

u = sine i / sin r

u = sine24/sinr

1.28 = sine 24 / sine r

1.28Sine r = sin24

1.28 sine r = 0.4067

Sine r = 0.4067/1.28

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= 18.5⁰

4 0
2 years ago
Identify the following terms:
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Answer:

atom -
the smallest particle of a chemical element that can exist.

atomic mass-
the quantity of matter contained in an atom of an element

atomic weight -
ratio of the average mass of a chemical element's atoms to some standard

protons-
stable subatomic particle that has a positive charge equal in magnitude to a unit of electron charge and a rest mass of 1.67262 × 10−27 kg

electrons-
a stable subatomic particle with a charge of negative electricity, found in all atoms and acting as the primary carrier of electricity in solids

neutrons-
a subatomic particle of about the same mass as a proton but without an electric charge, present in all atomic nuclei except those of ordinary hydrogen.

energy levels-
one of the stable states of constant energy that may be assumed by a physical system  
[used especially of the quantum states of electrons in atoms and of nuclei. — called also energy state.]

Covalent bonds

the interatomic linkage that results from the sharing of an electron pair between two atoms.

ionic bonds
type of linkage formed from the electrostatic attraction between oppositely charged ions in a chemical compound.

Valence electrons
a single electron or one of two or more electrons in the outer shell of an atom that is responsible for the chemical properties of the atom.

Lewis Dot Diagram
A way of representing atoms or molecules by showing electrons as dots surrounding the element symbol. One bond is represented as two electrons.

4 0
2 years ago
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