The number 0.03 has how many significant figures?
a. 2
b. 3
c. 5
d. 6
e. 7
a
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Angular momentum is defined as
A. Moment of inertia * velocity B. Mass * angular velocity C. Mass * velocity D. Moment of inertia * angular velocity
A 1.37-kg block is held in place against the spring by a 74-N horizontal external force (see the figure)
The external force is removed, and the block is projected with a velocity v1 = 1.2 m/s upon separation from the spring. The block descends a ramp and has a velocity at the bottom. The track is frictionless between points A and B. The block enters a rough section at B, extending to E. The coefficient of kinetic friction over this section is 0.24. The velocity of the block is at C. The block moves on to D, where it stops. The initial compression of the spring is closest to A) 2.7 cm. B) 1.4 cm. C) 0.96 cm. D) 5.3 cm. E) 3.6 cm.
What type of plate boundary results from two plates moving away from each other?
What will be an ideal response?
In a double slit experiment, the distance between the slits is 0.2 mm and the distance to the screen is 150 cm. What is the phase difference (in degrees) between the waves from the two slits arriving at a point P when the angular distance of P is 10° relative to the central peak, and the wavelength is 500 nm? (Convert your result so the angle is between 0 and 360°.)
a. 145° b. 155° c. 165° d. 135° e. 95°