A simple machine used to raise a flag is a

The crest of one wave lines up with the trough of another wave. What happens between the waves? A. A breaking wave B. Destructive interference C. Constructive interference D. Wave reflection

What is a element that tends to be shiny, easy shaped, and a good conductor of heat?

What's the main drawback of "concurrent think aloud," "retrospective think aloud," "concurrent probing", and "retrospective probing" approaches to usability testing?

Is the density of an object constant?

Having landed on a newly discovered planet, an astronaut sets up a simple pendulum of length 0.971 m and finds that it makes 319 complete oscillations in 846 s. The amplitude of the oscillations is very small compared to the pendulum's length.

A thermometer is placed in water in order to measure the water's temperature. What would cause the liquid in the thermometer to drop? A. The molecules in the water spread apart. B. The molecules in the thermometer's liquid spread apart. C.

The amount of energy carried by a wave is proportional to the square of the wave's A. frequency B. amplitude C. wavelength D. period ... ?

The pressure at the bottom of a jug filled with water does not depend on

at what other angle will a thrown ball go the same distance as one thrown at an angle of 75 degrees?

A record player turntable initially rotating at 3313 rev/min is braked to a stop at a constant rotational acceleration. The turntable has a rotational inertia of 0.031kg? m2.