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Darya [45]
3 years ago
8

Please help me out with this questions

Physics
2 answers:
tatuchka [14]3 years ago
8 0
True

Explanation: Since the cornea is a curved surface, it acts like a convex lens and begins to focus the light rays. The light then passes through the pupil and hits the lens of the eye. The lens, also convex, further focuses the light so that it will hit the retina at the back of the eyeball.
Lena [83]3 years ago
4 0

The answer may be true I don't know but, my heart is set on true. Pick what you think it is but my answer is true.

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Traveling at a speed of 50 kilometers per hour, how far does the car move in 3.5 hours? *
expeople1 [14]

Answer:

175 kilometers

Explanation:

50 × 3.5 = 175

or

50 x 3 = 150 +

50 x 0.5 = 25

150 + 25 = 175 kilometers

3 0
3 years ago
Calculate the resistance in a circuit with a 16 volt battery and 4 amps of current.
GrogVix [38]

Answer:

4 ohms

Explanation:

16v=Ω(4A)

4 0
3 years ago
A catapult’s lever holds a cannonball. The lever is attached to a tightly held rope. When the rope is released, the lever spring
vlada-n [284]
The answer is ELASTIC
6 0
4 years ago
Read 2 more answers
Carl measures the temperature of the water at different depths of the lake to see if there is a relationship.
Oksi-84 [34.3K]
Independent variable - Water depth

The independent variable is something that is purposely changed in order to see the effects of change on the dependent variable. So since Carl wants to measure the temperature of water at different depths we will purposely change the depth of the water in order to observe how this would affect the temperature. 

Dependent variable - Temperature of the water 

The dependent variable is something that is dependent on the independent variable and is assumed to change as the independent variable changes. So we can determine that the temperature of the water is the independent variable as Carl expects it to change with the depth of the water. Another reason we can determine this is the dependent variable is because Carl can change the depth of the water measured but not the temperature of the water depths. 
4 0
3 years ago
What are properties of what and there importance
kirill [66]

Answer:

Physical and chemical properties

Explanation:

There are different types of properties

<u>Physical properties</u>

The physical properties of matter are those characteristics specific to the substance, to be observed or measures do not produce new chemical species, for example:

Smell, color, taste, crystalline shape, temperature melting temperature, boiling temperature, density, viscosity, surface tension, vapor pressure, solubility, hardness, brightness, malleability, ductility, conductivity, etc.

<u>Chemical properties</u>

The chemical properties of matter are those which, when observed or measured, produce new chemical species, by

example: reactivity to oxygen, water or acid.

And these are classified as follows.

Properties that do not depend on the amount of substance considered are called intensive properties, such as melting temperature or density. The so-called extensive properties are those that depend on the amount of material substance, such as volume or mass.

Intensive properties are also called specific because they are characteristics that make it possible to differentiate one substance from another. Also, extensive properties are known as general properties because they are present in all kinds of substance and do not allow them to be differentiated from each other.

On the other hand, chemical properties are those whose measurement implies a change in composition, usually irreversible. Flammability or that a substance is easily oxidized are chemical properties.

5 0
4 years ago
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