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ValentinkaMS [17]
3 years ago
5

A. I am a natural indicator. I turn my pink color to deep pink in an acid and green in a basic solution. I am …………………. B. I am a

synthetic indicator. I turn red in acidic solution and yellow in basic solution. I am ………………. C. I am an organic dye. I am colorless. Bases turn me pink while acids and neutral substances do not affect me. I am ……………….
Physics
1 answer:
olga nikolaevna [1]3 years ago
3 0

Answer:

A. China rose

B. Methyl red

C. Phenolphthalein

Explanation:

An indicator is a substance used to detect the presence of an acid or base as characterized by the indicators color change. An indicator can either be natural or synthetic depending on whether it is obtained from naturally occurring substance (natural) or synthesized in a laboratory (synthetic).

A. China rose is a type of natural indicator that turns deep PINK or MAGENTA in the presence of an acid or GREEN in the presence of a base.

B. Methyl red is a synthetic Indicator that turns RED in the presence of an acid or YELLOW in the presence of a base.

C. Phenolphthalein is an organic dye that is originally colorless but turns PINK in the presence of a base but remains colorless in the presence of an acid or neutral substance.

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_______ currents assist in the transfer of thermal energy from warmer climates to cooler climates.
Leya [2.2K]
<span>It is convection currents that carry thermal energy from warmer places to cooler places. The process operates upon planetary scales, as suggested by the question, but also operates on more local scales such as in your own house. For example, if there is a heater within a single room within your house, convection will drive heat energy to adjacent colder rooms. </span>
4 0
3 years ago
A negative body image can affect your fitness because being healthy asks you to keep
larisa [96]

Answer:

True

Explanation:

because if your body image is negative your holistic health is will affect

7 0
3 years ago
g Two masses are involved in a collision on an axis (one dimensional). One mass is six times the mass of the second. Both masses
statuscvo [17]

Answer:

v₁f = 0.5714 m/s   (→)

v₂f = 2.5714 m/s   (→)

e = 1  

It was a perfectly elastic collision.

Explanation:

m₁ = m

m₂ = 6m₁ = 6m

v₁i = 4 m/s

v₂i = 2 m/s

v₁f = ((m₁ – m₂) / (m₁ + m₂)) v₁i +  ((2m₂) / (m₁ + m₂)) v₂i

v₁f = ((m – 6m) / (m + 6m)) * (4) +  ((2*6m) / (m + 6m)) * (2)  

v₁f = 0.5714 m/s   (→)

v₂f = ((2m₁) / (m₁ + m₂)) v₁i +  ((m₂ – m₁) / (m₁ + m₂)) v₂i

v₂f = ((2m) / (m + 6m)) * (4) + ((6m -m) / (m + 6m)) * (2)

v₂f = 2.5714 m/s   (→)

e = - (v₁f - v₂f) / (v₁i - v₂i)   ⇒   e = - (0.5714 - 2.5714) / (4 - 2) = 1  

It was a perfectly elastic collision.

8 0
3 years ago
A 60.watt light bulb runs for 5.0 seconds. How much energy does it use?
VikaD [51]

"watt" means "Joule of energy per second"

"60 watts" means "60 Joules per second"

(60 joules per second) x (5 seconds) = <em>300 Joules of energy</em>

5 0
4 years ago
in california the pacific plate slides past the north american plate. If the pcific plate is moving at a speed of 5 centimeters
frozen [14]

Answer:

6.34×10⁹ seconds

Explanation:

Applying,

V = d/t............. Equation 1

Where V = speed plate, d =  distance covered by the plate, t = time it takes the plate to travel

make t the subject of the equation

t = d/V............ Equation 2

From the question,

Given: d = 5 cm/yr = (5×3.154×10⁻⁹) = 1.577×10⁻⁸ m/s,  d = 100 meter

Substitute these values into equation 2

t = 100/1.577×10⁻⁸

t = 6.34×10⁹ seconds

Hence the time it takes the the plate to travel is 6.34×10⁹ seconds

3 0
3 years ago
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