Answer:
When a color (colored fabric) absorbs light, it turns the light into thermal energy (heat). The more light a color absorbs, the more thermal energy it produces. Black fabric absorbs all colors of light and is therefore warmer than white fabric which reflects all colors.
Answer: 0.81 GHz
Explanation:As written in the question police radars works by determining the beat frequency between sent and reflected wave. This beat frequency is just difference of the frequencies of the sent and reflected wave.
To Calibrate the Radar the turning fork must produce the beat frequency similar to that produce by reflected wave at right speed which in this case is 55mph
Hence we know that turning fork frequency=Δf
Δf=f'-f
here f=10.5 Ghz
f=10.5 *10^9
f=10500000000
also
v_s=55mph
v_s=24.5872 m/s
since the source is moving a/c to doppler effect
taking speed of sound to be v=344m/s
f'=11.3*10^9
Δf=8.08*10^8
Δf=0.81 GHz
“Baking soda mixed into vinegar, because the production of bubbles indicates that a new substance was formed.” This is the chemical change Tiguan observed.
Answer: Option B
<u>Explanation:
</u>
In the given options, if Tiguan has mixed ice with oil, sugar dissolving in water and sand mixing with water, it is a physical change as the composition of the both the solid and liquid reactants will remain same.
The mixing of baking soda with vinegar leading to release of bubbles is the chemical change. Its state is completely different and also it did not inherit any properties from baking soda and vinegar.
So, the formation of new compound with different properties is termed as occurrence of chemical change between reactants. Thus, Tiguan has considered solid as baking soda and liquid sample as vinegar and observed the chemical change of formation of bubbles.
I think the answer would be 2 because strength can be learned and acquired with weights or other equipment
Hope this helps
Have a great day/night
Feel free to ask any questions
Answer:
its either A or D
Explanation:
lazy-.
1.Unwilling to do work or make an effort; disinclined to exertion.
2.Causing idleness; relaxed or leisurely.
3.Sluggish; slow-moving.
Sedentary
1.Not moving; relatively still; staying in the vicinity.
2.medicine, of a job, lifestyle, etc. Not moving much; sitting around.
3.obsolete inactive; motionless; sluggish; tranquil
i think it's sedentary
