You can be certain that a collision between two objects is elastic if
A. The system’s total momentum is conserved.
B. The system’s total energy is conserved.
C. The system’s total kinetic energy is conserved.
D. If the objects are bouncy or springy.
E. If the objects stick together after the collision.
C. The system’s total kinetic energy is conserved.
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A coil is wrapped with 300 turns of wire on the perimeter of a square frame (side length = 20 cm). Each turn has the same area as the frame, and the total resistance of the coil is 1.5 ?. A uniform magnetic field perpendicular to the plane of the coil changes in magnitude at a constant rate from 0.50 T to 0.90 T in 2.0 s. What is the magnitude of the induced emf in the coil while the field is
changing? a. 2.4 V b. 1.6 V c. 3.2 V d. 4.0 V e. 8.4 V
Plane waves of ultrasound, f = 51.0 kHz, impinge on a flat plane with a 1.00-cm-wide slit. What is the total angular width (2?) of diffracted sound waves when the speed of sound in air is 340 m/s
a. 167° b. 83.6° c. 19.5° d. 41.8° e. 0.11°
Only at the equator are all the stars visible over the course of the year
Indicate whether the statement is true or false
Which lunar feature most resembles the Moon's original crust?
A) Valleys B) Craters C) Maria D) Bright rays E) Highlands