By definition, we have:
Heat:
Energy that is manifested by an increase in temperature and comes from the transformation of other energies; is originated by the vibratory movements of the atoms and the molecules that form the bodies
Temperature:
The temperature is a magnitude referred to the common notions of heat measurable by a thermometer. In physics, it is defined as a scalar quantity related to the internal energy of a thermodynamic system
Some similarities are:
1) The more heat there is, the higher the temperature.
2) The less heat there is, the lower the temperature.
3) Mathematically the heat and the temperature difference between two points are proportional.
Answer:
bend toward the normal line
Explanation:
When light passes from a less dense to a more dense substance, (for example passing from air into water), the light is refracted (or bent) towards the normal. In your question the light is moving from rarer to denser medium
Upon refracting from air to glass, light will bend towards the normal line, reducing the angle of incidence due to the principle of Snell's Law, which governs how light refracts between media. However, the exact refracted angle cannot be determined without the refractive indices of air and glass.
According to the Law of Refraction, also known as Snell's Law, light changes direction when it passes from one medium to another due to a change in speed, which is determined by the mediums' refractive indices. When light passes from air (a medium with a lower refractive index) into glass (a medium with a higher refractive index), it bends towards the normal line, the imaginary line perpendicular to the surface at the point of incidence.
Given that the angle of incidence is 30 degrees, following the formula of Snell's law: n₁ sin θ₁ = n₂ sin θ₂ where n₁ and n₂ are the refractive indices of air and glass, and θ₁ and θ₂ are the angles of incidence and refraction, we could solve for θ₂ which will be the angle of refraction in glass. However without information of refractive indices of air and glass, an exact angle cannot be determined.
In summary, the light ray will bend towards the normal upon entering the glass, hence decreasing the angle of incidence, according to the Law of Refraction or Snell's Law.
#SPJ3
Increase, decrease, or remain the same
Answer:
33.3 g ≈ 33 g
Explanation:
Please see attached photo for explanation.
From the attached photo, M is the mass that we must obtain to balance the plank.
The mass, M can be obtained as follow:
Anticlockwise moment = clockwise moment
Anticlockwise moment = 50 x 20
Clockwise moment = M x 30
Anticlockwise moment = clockwise moment
50 x 20 = M x 30
Divide both side by 30
M = (50 x 20)/30
M = 33.3 g ≈ 33 g
Therefore, the mass that will balanced the plank at the 70 cm length is appropriately 33 g