The maximum voltage which can be applied before the bulb will break is 50 Volts.
<u>Given the following data:</u>
To find how much voltage can be applied before the bulb will break, we would apply Ohm's law:
Ohm's law states that at constant temperature, the current flowing through an electrical circuit is directly proportional to the voltage applied across the two terminals of the circuit and it's inversely proportional to the resistance in the electrical circuit.
Mathematically, Ohm's law is given by the formula;
<u>Where;</u>
Substituting the given parameters into the formula, we have;
×
<em>Voltage </em><em>=</em><em> 50 Volts.</em>
Therefore, the maximum voltage which can be applied before the bulb will break is 50 Volts.
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The force applied to lift the crate is 171 N
Explanation:
The lever works on the principle of equilibrium of moments, so we can write:
where
is the force in input
is the arm of the input force
is the output force
is the arm of the output force
For the lever in this problem, we have:
(force applied)
Solving the equation for , we find the force applied to lift the crate:
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Answer:
D) 11 m/s
Explanation:
The problem asks us to calculate the velocity of the hot dog with respect to the observer stationary outside the train. This velocity is given by:
where
is the velocity of the train (towards right)
is the velocity of the man (towards right)
is the velocity of the hot-dog (towards left, so we put a negative sign)
Substituting the numbers into the equation, we find
and the positive sign means the velocity is toward right.