Answer:
towards west
Explanation:
As we know that the speed of the blue car as appear to the bicycle rider is given as
towards west
also it is given that bicycle is moving at speed of 10 km/h towards East
so here we have
so we have
towards west
now speed of the red car is given as 15 km/h towards west
so here the relative speed of blue car with respect to red car is given as
towards west
Answer:
Twice
Explanation:
From the formula for velocity in a circle
V= 2πr/T
Where V is velocity
r is raduis
T is period
We see that as r increases V increases so if r is doubled V becomes doubled
The average range of human hearing is considered to be roughly
from 20 Hz to 20,000 Hz .
A). No. Too high. You hear nothing.
B). No. Too low. You may hear something that sounds like
rapidly pumping wind, but not a sound tone.
C). Yes. 1,000 Hz is roughly the 'C' on the piano that is
two octaves above middle-C .
D). No. 0.10 Hz is only one wave every 10 seconds.
A wave at this rate feels like a breezy day.
A. NaCl (salt) because it is an ionic compound which will dissociate in water and make the water conduct electricity
Explanation:
Sodium chloride (NaCl) is an ionic compound and when is dissolved in water sodium (Na⁺) and chlorine (Cl⁻) ions are formed. The ions in water will promote the movement of electrical charges so the solution will conduct electricity.
Sugar (C₆H₁₂O₆) is a covalent compound and will not form ions when is dissolved in water. The sugar solution will not conduct electricity.
Learn more about:
conduction of electricity by ions
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