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Slav-nsk [51]
3 years ago
13

The magnetic field in the region between the poles of an electromagnet is uniform at any time, (1 point) but is increasing at th

e rate of 0.090 T/s. The area of the conducting loop in the field is 110 cm2. What is the magnitude of the induced emf?
A. 0.12 mV
B. 0.99 mV
C. 0.31 mV
D. 0.82 mV
Physics
1 answer:
olga nikolaevna [1]3 years ago
5 0

Answer:

B)

The magnitude of induced emf in the conducting loop is 0.99 mV.

Explanation:

Rate of increase in magnetic field per unit time = 0.090 T/s

Area of the conducting loop = 110 cm^2 = 0.0110 m^2

Electromagnetic induction is the production of an emf or voltage in a coil of wire due to a changing magnetic field through the coil.

Induced e.m.f is given as:

EMF = (-N*change in magnetic field/time)*Area

EMF = rate of change of magnetic field per unit time * Area

EMF = 0.090 * 0.0110

EMF = 0.00099 V

EMF = 0.99 mV

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Answer:

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Substitute m_2 = m_1/2 \& v_1 = v/3

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3 years ago
A playground merry-go-round of radius 2.00 m has a moment of inertia I = 275 kg · m2 and is rotating about a frictionless vertic
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Answer:

0.2932 rad/s

Explanation:

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\omega_f = Final angular velocity

Here the angular momentum of the system is conserved

I_i\omega_i=I_f\omega_f\\\Rightarrow 275\times 14\times \dfrac{2\pi}{60}=(275+275(2)^2)\omega_f\\\Rightarrow \omega_f=\dfrac{275\times 14\times \dfrac{2\pi}{60}}{275+275(2)^2}\\\Rightarrow \omega_f=0.2932\ rad/s

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7 0
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Answer:

Earth's Tilt and The Seasons. Earth, like all of the planets in the Solar System, travels around the Sun. One complete orbit of the Sun is known as a year and it takes Earth 365 days, 5 hours, 48 minutes and 46 seconds to complete an orbit. The changing seasons are caused by the fact that Earth is tilted. please vote me brainliest i can't message no one cuz i haven't got enough points i'm desperate.

Explanation:

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The equation we use is KE=.5mv^2
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KE=.5(55kg)(16m/s)^2
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The carrot hangs from the ceiling by two ropes (1 and 2).
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Answer:

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