A circular coil of radius 0.110 m contains a single turn and is located in a constant magnetic field of magnitude 0.320 T. The magnetic field has the same direction as the normal to the plane of the coil. The radius increases to 0.290 m in a time of 0.0740 s. (a) Determine the magnitude of the emf induced in the coil. (b) The coil has a resistance of 0.670 Ω. Find the magnitude of the induced current.

1) is right

step-by-step explanation:

answer

a,b, and d

explanation

a reflection angle is more than

but less than;

an angle that measures

is a reflex angle.(true)

an angle that measures less than

is acute.(true)

provided we are considering angles greater or equal to zero.

an acute angle lies in the range.

an obtuse angle is less than 180° but more than 90°

an angle that measures 300° is obtuse (false)

an angle that measures 65° is an acute angle.(true)

step-by-step explanation:

given that there are two triangles j'k'l' and jkl>

the former is got by dilating the second one.

when drawn on a grid, (graph paper) coordinates of vertices of first triangle is

(6,12)j, (9,6)k and (12,9)l

side jk has length = distance between j and k

=

side j'k'=distance between j' and k'

=

ie j'k'l' has sides 1/3 of that of corresponding sides of jkl.

hence scale factor of 1/3 is used to get j'k'l'from jkl

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