Answer:
102 km/h
Explanation:
x = distance of car A at any time from the intersection
x₀ = distance of car A at some time = 0.4 km
= Speed of car A = 75 km/h
y = distance of car B at any time from the intersection
y₀ = distance of car B at some time = 0.3 km
= Speed of car B = 70 km/h
d = distance between the two cars at any time
d₀ = distance between the two cars at some time
v = rate of change of distance between the cars
Using Pythagorean theorem
d²₀ = x₀² + y₀²
d²₀ = 0.4² + 0.3²
d₀ = 0.5 m
Distance between the two cars at any time is given using Pythagorean theorem as
d² = x² + y²
Taking derivative both side relative to "t"
(0.5) v = (0.4) + (0.3)
(0.5) v = (0.4) (75) + (0.3) (70)
v = 102 km/h
Answer:
false
Explanation:
you cant calculate a three variable equation knowing only one of the variables
The answer is d! I’m happy to help :)
I think the correct answer from the choices listed above is the third option. It is the difference in electrical potential that causes the electric charges to flow from one end of the battery to the other. Hope this answers the question. Have a nice day.
1. H2O- The water completely dissolved the salt.
Alcohol- The alcohol dissolved the salt slightly.
Glycerin-The salt has not dissolved at all.
2. Water
3. Like dissolve like basically works on the principle of polarity. It means the substances which possess similar chemical properties may dissolve in each other. For example, ethanol can be dissolved in water because both are polar in nature whereas non-polar molecules can be dissolved in non-polar solvents only.
4. Generally, a solute dissolves faster in a warmer solvent than it does in a cooler solvent because particles have more energy of movement. For example, if you add the same amount of sugar to a cup of hot tea and a cup of iced tea, the sugar will dissolve faster in the hot tea.
Learn more about The choice of solvent here:-brainly.com/question/14918321
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