What does heterozygous mean

A star is moving toward the earth with a speed of 0.9 c (90% the speed of light). it emits light, which moves away from the star at the speed of light. relative to us on earth, the speed of the light moving towards us (emitted by the star) is

If 4 x 10^21 electrons pass through a wire connected to a 15 ohm resistor in 3 s, how much electric current does the wire have and what is the potential difference used in the wire?

What is the measure of disorder in a system called? A. efficiency B. Enthalpy C. Work D. Entropy

The angle a vector makes with the x-axis of a coordinate system must be what size in order to make one or more of its components negative? less than 30 degrees between 30 and 60 degrees between 61 and 90 degrees greater than 90 degrees

In a thunderstorm, the air must be ionized by a high voltage before a conducting path for a lightning bolt can be created. an electric field of about 1.0 * 106 v/m is required to ionize dry air.

An empty capacitor is connected to a 12.0 V battery and charged up. The capacitor is then disconnected from the battery, and a slab of dielectric material (dielectric constant "k" = 2.8) is inserted between the plates.

how long can you afford to stop for lunch if you can drive a steady 90 km/h on the highway and must take a 225 km trip in 210 min?

Which layer of the Sun's atmosphere is farthest from the surface of the Sun? A) troposphere B) corona C) chromosphere D) photosphere

Which of the following is a supersonic speed? Mach 0.005 Mach 0.05 Mach 0.5 Mach 5

How do you solve this equation ___ Al + ___ Na1 O1 H1 - ___Na3 Al1 O3 + __ H2