Answer:
the stone enters the water and slows down
Explanation:
Solution:
- When light is refracted it speed is slowed down or increases depending on the medium it enters. This depends on the ratio of air-water refractive index ratio.
- The speed of an object in air is faster than speed of an object in water. Because the refractive index of air is less than that of water. In refraction, the light changes direction slightly because it slows down or speeds up, depending on what medium it is changing into.
- From this we could say as the rock enters the water and slows down it models as if the light has been refracted.
Anything that is made up of atoms.
Answer:
b. 375 Ohms
Explanation:
<u>Given the following data;</u>
Voltage = 4.5 V
Current = 12 mA
To find the resistance;
Ohm's law states that at constant temperature, the current flowing in an electrical circuit is directly proportional to the voltage applied across the two points and inversely proportional to the resistance in the electrical circuit.
Mathematically, Ohm's law is given by the formula;
Where;
- V represents voltage measured in voltage.
- I represents current measured in amperes.
- R represents resistance measured in ohms.
<u>Conversion:</u>
1000 mA = 1 A
12 mA = 12/1000 = 0.012 A
Substituting into the formula, we have;
Resistance, R = 375 ohms
Answer:
Solute
Explanation:
Something dissolved in a liquid is called a solution. The dissolved substance is called the solute. The liquid used for dissolving is called the solvent.
Potential energy is an object’s stored energy when it is not moving. Kinetic energy is an object’s energy in motion. You can’t be both moving and not moving at the same time, so PE and KE cannot be equal.
