Answer:
Correct answer: V₀ = 9.9 m/s
Explanation:
The subject is a vertical upward shot.
We will use the following formula:
V₀² = 2 · g · h => V₀ = √2 · g · h , where V₀ is initial velocity
V₀ = √2 · 9.81 · 5 = √ 10 · 9.81 = √98.1 = 9.9 m/s
V₀ = 9.9 m/s
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A wave sound is a longitudinal <span>wave.
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Answer:
The voltage (V)
Explanation:
Ohms, in his law, has explained the relationship between current, resistance and voltage.
Ohm's law, which states that the voltage passing through a resistor is directly proportional to both the current and the resistance of the resistor, has the following equation:
V = IR
Where;
V = voltage (volts)
I = current (Amperes)
R = resistance (ohms)
According to this question, Karl measures the current, I, through a resistor. In order to calculate his resistance, R, he will need to measure the voltage, V.
To solve this problem we will use Newton's second law in order to obtain the weight of a person. The second law tells us that
F = ma
Where,
m = mass
a = Acceleration
In this particular case, the acceleration is equal to that exerted by the earth through gravitational acceleration, so if the person's weight is 75Kg and the gravity is 
, the weight of the body will be,
When the elevator is at rest this reads 735.75N and 75Kg (The same mass of the person)
