Which waves are mechanical waves?

A.

microwaves

B.

sound waves

C.

light waves

D.

radio waves

three identical metal spheres are labelled a, b and c. initially, a has charge + 5q/2, b has charge + 3q/2 and c has charge - 4q. b is first touched to a, removed, then touched to c and removed.

What are 90 percent of the stars in space called?

A sudden discharge of static electricity during a thunderstorm is called

How can light change matter

A motorist driving a 1000-kg car wishes to increase her speed from 20 m/s to 30 m/s in 5 s. Determine the horsepower required to accomplish this increase. Neglect friction.

Gravitational force is a (n) ? A) attractive force B) repulsive force C) both an attractive and repulsive force D) neither an attractive or repulsive force

A damped harmonic oscillator loses 6.0% of its mechanical energy per cycle. a. by what percentage does its frequency (equation 14-20) differ from its natural frequency? b.

What element will form an ionic bond with carbon

State the condition for maximum current to be drawn from the cell

Anti-reflective coatings on lenses use thin-film interference to eliminate the reflection of a particular color. Suppose a glass lens (ng = 1.53) is covered with a thin film (nf = 1.31) to prevent green light (λ = 534 nm) from being reflected.