Answer:
rpm
Explanation:
Given that rotational kinetic energy =
Mass of the fly wheel (m) = 19.7 kg
Radius of the fly wheel (r) = 0.351 m
Moment of inertia (I) =
Rotational K.E is illustrated as
Since 1 rpm =
The image represents a sound wave as it goes through several changes. Describe how the waves changes. where does it get louder?
where does it get softer?how does the pitch change? how do you know?
someone please help me TvT
someone please help me TvT
1 answer:
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Answer:
Explanation:
<u>Density </u>
The density of a substance is the mass per unit volume. The density varies with temperature and pressure.
The formula to calculate the density of a substance of mass (m) and volume (V) is:
The cube has a mass of m=3.75 g and a volume of V=3 ml, thus the density is:
Since 1 kg=1000 mg and 1 lt = 1000 ml, the density has the same value but with different units:
Despite current has a magnitude and a direction, like vectors, it is a scalar because it doesn't obey laws of vector addition. For instance, if we consider a junction of 
in a circuit, and two currents entering this junction, we know that the resultant current is just the algebraic sum of the two currents, not the vector sum, so it is not a vector quantity.