What causes this disk to form and flatten?

Choose one:
A. angular momentum
B. linear momentum


A. angular momentum

Physics & Space Science

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As a hiker descends a hill, the work done by gravity on the hiker is

A. positive and depends on the path taken. B. negative and depends on the path taken. C. positive and independent of the path taken. D. negative and independent of the path taken.

Physics & Space Science

Lightning bolts occur between

a. Clouds and the ground. b. clouds. c. Both A and B.

Physics & Space Science

Grandfather clocks often are built so that each one-way swing of the pendulum is a second. How long is the length of a simple pendulum for a 2.00 second period?

A) 0.993 m B) 24.8 cm C) 101.cm D) 0.500 m E) 500. cm

Physics & Space Science

A segment of wire carries a current of 25 A along the x axis from x = ?2.0 m to x = 0 and then along the y axis from y = 0 to y = 3.0 m. In this region of space, the magnetic field is equal to 40 mT in the positive z direction. What is the magnitude of the force on this segment of wire?

A. 2.0 N B. 5.0 N C. 1.0 N D. 3.6 N E. 3.0 N

Physics & Space Science