How do most complex organisms get their energy?

Why do power plants emit such a high percentage of pollutants?

Victor drew a diagram to show the life cycle of a low-mass star. Which label belongs in the area marked X?

What are two components that make up orbital motion

Which of the following is a vector quantity? A. 800 feet B. 3 km C. 400 m/s south D. 30 m/s

What device is used on a power tool's universal motor to provide a burnout-proof motor? a. Current relay b. Circuit breaker c. Thermal protector d. Fuse

Protecting his nest, a 600-g peregrine falcon rams a marauding 1.5-kg raven in midair. the falcon is moving at 20.0 m/s, and the raven at 9.00 m/s at the moment of impact.

A carousel has a radius of 1.70 m and a moment of inertia of 110 kg · m2. A girl of mass 44.0 kg is standing at the edge of the carousel, which is rotating with an angular speed of 3.40 rad/s.

A 2kg marble is moving at 3 m/s when it strikes another 4kg marble moving in the opposite direction at - 3 m/s. What will be the velocity of the 4kg marble after the collision of the 2kg marble's new velocity is - 4 m/s.

How long did it take to reload a rifle during the 18th 19 century?

Hot spots in electronic and electric circuits can be detected visually with the use of A. dataloggers. B. thermocouples C. oscilloscopes D. infrared cameras.