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Ad libitum [116K]
4 years ago
8

The torque of a system whose force is 30n and length is 2m

Physics
1 answer:
Helen [10]4 years ago
8 0
<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.

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The velocity of waves having wavelength 0.643 m and frequency 3.25 e 10 hz is
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The relationship between velocity (v), wavelength (w) and frequency (f) is expressed as:

v = w f

Plugging in the given values into the equation:

v = 0.643 m (3.25 e 10 Hz)

Where Hz = 1 / s , therefore:

v = 0.643 m (3.25 e 10 / s)

v = 2.09 <span>e 10 m / s</span>

4 0
4 years ago
When a battery, a resistor, a switch, and an inductor form a circuit and the switch is closed, the inductor acts to oppose the c
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Answer:

The time constant becomes twice.

Explanation:

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T_{1} = initial time constant of the L-R circuit = T

T_{2} = final time constant of the L-R circuit

L_{1} = Initial inductance of the inductor =  L

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For the same resistance, the time constant depend directly on the inductance, hence

\frac{T_{1}}{T_{2}} = \frac{L_{1}}{L_{2}}\\\frac{T}{T_{2}} = \frac{L}{2L}\\\frac{T}{T_{2}} = \frac{1}{2}\\T_{2} = 2T

7 0
4 years ago
Which of the following is a true statement about energy?
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<span>B. Energy is never created nor destroyed.
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3 0
3 years ago
Read 2 more answers
How do scientists determine the age of the solar system?
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The top of a tower much like the leaning bell tower at Pisa, Italy, moves toward the south at an average rate of 1.4 mm/y. The t
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Answer:

\omega=7.16*10^{-13}\frac{rad}{s}

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Here v is the linear speed and r is the radius of the circular motion. The height of the tower is equal to the radius of the circular motion of the top of the tower, since is rotating about its base. We need to convert the given linear speed to \frac{m}{s}:

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