How long have humans been migrating?

А

2,000 years

about 200,000 years

about 60,000 years

D

1,000 years

Which factors affect the strength of a magnetic field around a current-carrying wire? Check all that apply. the type of metal of the wire the amount of the current the direction of the current the temperature of the wire the distance from the wire

What is the major outcome of evolution

A sound wave travels across a 2,100-meter wide valley in 7.0 seconds.

1. The upward force exerted on an object falling through air is _ a. terminal velocity c. air resistance b. momentum d. weightless

Is the use of a toaster 100% efficient? Why or why not

When a fork is placed in a hot piece of lasagna, thermal energy is transferred up the fork by ...

Levi observed properties of four different waves and recorded observations about each one in his chart.

A rocket is shot straight up from the earth, with a net acceleration (acceleration by the rocket engine minus gravitational pullback) of during the initial stage of flight until the engine cut out at sec.

Which moon has a thick atmosphere made mostly of nitrogen?

J. J Thompson proposed that atoms were made up of positively charged particles with electrons scattered into them. How did he reach this conclusion?