Answer:
1. The best definition of refraction is ____.
a. passing through a boundary
b. bouncing off a boundary
c. changing speed at a boundary
d. changing direction when crossing a boundary
Answer: D
Bouncing off a boundary (choice b) is reflection. Refraction involves passing through a boundary (choice a) and changing speed (choice c); however, a light ray can exhibit both of these behaviors without undergoing refraction (for instance, if it approaches the boundary along the normal). Refraction of light must involve a change in direction; the path must be altered at the boundary.
Oxygen... Hope this Warner helps
Answer:
The fractional kinetic energy will be lost if the collision is inelastic. In inelastic collision, the kinetic energy is converted into other forms of energy.
The lost energy became heat and sound energy.
Explanation:
During inelastic collision, the kinetic energy of a moving object does not conserve. It changes into another form of energy such as sound energy and heat energy etc.
For example, when a moving car hit another car or wall etc, the kinetic energy is converted into sound and heat energy. This type of collision is inelastic collision.
Is is found in the noble gases group
The thermal energy used by the tires is 1.14 J.
Here, the thermal energy used will be the work done by Mark.
Given,
Distance = 140 m
Force exerted = 160 N
Thermal energy = ?
We know,
Work = force * displacement
But here the thermal energy of tires is asked.
In this question, the thermal energy used is the energy consumed to do the work.
So, using the formula of work we can find the thermal energy.
W = 160 / 140 = 1.14 J
Therefore the thermal energy used by the tires is 1.14J
To learn more about thermal energy, refer: brainly.com/question/1687193
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