How many microphones are in a megaphone?

What are two extrusive rocks

The star Antares has an apparent magnitude of 1.0, whereas the star Procyon has an apparent magnitude of 0.4. Which star appears brighter in the sky?

Most of the stars in the Milky Way will end their lives as

Which has a greater mechanical advantage. a doorknob or screwdriver?

A 60 kg bungee jumper jumps from a bridge. She is tied to a bungee cord that is 15 m long when unstretched and falls a total distance of 31 m. Calculate (i) the spring constant of the bungee cord.

Which term defines the energy of motion? a. chemical energy b. electrical energy c. gravitational energy d. kinetic energy user: what is electromagnetic energy that travels in transverse waves? a. nuclear energy b. potential energy c.

The mass of a lift is 600kg. the maximum tensile force that the cable supporting the lift can withstand is 7kN. Calculate:maximum upwards acceleration allowed?

In an experiment if doubling the manipulated variable results in doubling of the responding variable the relationship between the variable is a (n) ?

What color does Indigo turn things?

Why is temperature a good criterion for searching for earth like exoplanets