For an object in uniform circular motion, its velocity and acceleration vectors are always perpendicular to each other at every point in the path

A) True
B) False


Answer: A

Physics & Space Science

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Flux: A flat coil is in a uniform magnetic field. The magnetic flux through the coil is greatest when the plane of its area is

A. parallel to the magnetic field. B. at 45° with the magnetic field. C. perpendicular to the magnetic field.

Physics & Space Science

Transformers: The primary of an ideal transformer has 100 turns and its secondary has 200 turns. Neglecting frictional losses, if the power input to the primary is 100 W, we can expect the power output of the secondary to be

A. 50 W. B. 100 W. C. 200 W. D. none of the given answers.

Physics & Space Science

A star is observed with a surface temperature of 3,000 K and a luminosity of 105 solar. What is the approximate radius of this star?

A) 30 Msun B) 0.3 Msun C) 3 Msun D) The radius cannot be determined.

Physics & Space Science

The law of conservation of angular momentum states that the angular momentum of an object remains constant if there are no external ______________ torques acting

Fill in the blank(s) with correct word

Physics & Space Science