The lakes on Titan have not been observed to have any waves. What does this suggest?
What will be an ideal response?
This suggests the presence of viscous, tar-like hydrocarbons.
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A 0.20-kg block rests on a frictionless, level surface and is attached to a horizontally aligned spring with a spring constant of 80 N/m. The block is initially displaced 4.0 cm from the equilibrium point and then released to set up a simple harmonic motion. A frictional force of 0.3 N exists between the block and surface. What is the speed of the block when it passes through the equilibrium
point after being released from the 4.0-cm displacement point? a. 0.45 m/s c. 0.72 m/s b. 0.63 m/s d. 1.2 m/s
The magnetic field lines inside a bar magnet go in what direction?
A. from south pole to north pole B. from north pole to south pole C. from side to side D. There are no magnetic field lines inside a bar magnet.
The sound from a single source can reach point O by two different paths. One path is 20.0 m long and the second path is 21.0 m long
The sound destructively interferes at point O. What is the minimum frequency of the source if the speed of sound is 340 m/s? A) 340 Hz B) 6800 Hz C) 520 Hz D) 680 Hz E) 170 Hz
A car is initially traveling west at 25 mph, and makes a turn north. As the car finishes the turn, its velocity is 20 mph north. It takes 3.5 seconds to complete the turn. What is the average acceleration of the car while it is turning, in mph/s? Let east be the positive-x direction and north be the positive-y direction.
a. -7.1i + 5.7j b. 7.1-5.73 c. 571-7.13 d. -5.7i+71.