Firstly, you must identify the pure substance first. Then, from a reliable source obtain its density. Density is calculated through the equation,
density = mass / volume
From this equation, the volume can be calculated.
volume = mass / density
The answer is: [C]: "elasticity" .
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<h2>Answer </h2>
The torque is 60 Nm.
<u>Explanation</u>
The torque of a system whose force is 30 N and the length is 2 m, then the torque is 60 Nm. The formula for torque is ( Force ) x ( moment arm ). Hence by putting values in the formula, torque = ( 30 N ) ( 2 m) which is equal to 60 Nm. The unit for torque is newton-meter (Nm). Torque is the turning effect or the force which tends to move the object in a circle and tends to rotate around a circle. Torque is a vector quantity.
The SI base units for torque is kg ⋅ m 2 ⋅ s − 2.
Answer:
Part a)
x = 3.95 cm
Part b)
x = - 11.9 cm
Explanation:
Part a)
Since both charges are of same sign
so the position at which net force is zero between two charges is given as
here we know that
square root both sides
Part b)
Since both charges are of opposite sign
so the position at which net force is zero will lie on the other side of smaller charges is given as
here we know that
square root both sides
so on x axis it will be at x = - 11.9 cm
