PH measures the concentration of hydrogen ions (
) in a solution. Knowing this, you can determine how acidic -or basic- your solution is.
Which statement BEST describes the relationship between our Solar System and the Milky Way galaxy?
2 answers:
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Answer:
the resistance of the second wire is 1 ohm.
Explanation:
Given;
cross sectional area of the first wire, A₁ = 5.00 x 10⁶ m²
resistance of the first wire, R₁ = 1.75 ohms
cross sectional area of the second wire, A₂ = 8.75 x 10⁶ m²
resistance of the second wire, R₂ = ?
The resistance of a wire is given as;
R ∝
Since the length of the two wires is constant
R₁A₁ = R₂A₂
Therefore, the resistance of the second wire is 1 ohm.
The acceleration of the car is
Explanation:
The acceleration of an object is given by
where
v is the final velocity
u is the initial velocity
t is the time elapsed
Here we have to convert the initial and final velocity of the vehicle into SI units. So we have:
is the initial velocity
is the final velocity
t = 5 s is the time elapsed
Solving for a, we find the acceleration:
Learn more about acceleration:
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