A generator is designed to produce a maximum emf of 170 V while rotating at 3200 rpm. The 1525 coils of the generator are circular with diameter 7.5 cm. Assuming the magnetic field in the generator is 0.075 T, what is the necessary magnetic field for the generator?
A. 0.0079 T
B. 0.30 T
C. 0.075 T
D. 0.24
C. 0.075 T
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An object is attached to a vertical spring and bobs up and down between points A and B. Where is the object located when the elastic potential energy of the system object-spring is a maximum?
A) at either A or B B) midway between A and B C) one-third of the way between A and B D) one-fourth of the way between A and B E) at none of the above points
The _______________ model explains pulsars using beams of radiation that sweep around the sky
Fill in the blank(s) with correct word
A spring scale typically indicates the magnitude of the tension force exerted on its bottom hook. What will the scale read in each of the cases shown in the diagram?
A. 49 N
B. 98 N
C. 196 N
D. Other (specify)
In a 1-g gravitational field, 1 second after turning on a flashlight its beam will curve beneath a perfectly straight line by
A) less than 4.9 m. B) 4.9 m. C) more than 4.9 m.