You don't have any matches, so you want to focus sunlight to ignite a pile of twigs for a campfire. Which mirror would be best to use? A. convex mirror B. concave mirror C. flat mirror D. plane mirror

A 2-kg block slides along a rough horizontal surface and slows to 10 m/s after traveling 20 m. If the kinetic coefficient of friction between the block and surface is 0.2, the initial speed (m/s) of the block was most nearly:

If a magnet is cut into unequal size pieces, how many north and south poles will each of the pieces have?

When a sound wave first enters the auricle, which part of the ear does it travel through on its way to the eardrum? auditory nerve cochlea hammer ear canal

Which would have more friction, a car traveling down a street or a toy remote-control car traveling on the same street? Why?

Which of the following is not biomass? A-Corn B-Cow manure C-evergreen tree D-Rusted iron railing

A train accelerates from a station with a = 1.841m/s? Upon reaching a speed of 23.52m/s the train travels at a constant velocity for a period.

A what is used to measure air pressure.

What is 6.9*10to the 7th power

Un lote de construcción rectangular mide 100 metros por 150 metros. Calcula el área de este lote en yardas cuadradas. (20 puntos)

4. The place on a magnet where the magnet exerts the strongest magnetic force is the magnetic A. pole. B. force. C. domain.