Which is NOT true about a protostar?

a. It is usually much larger than it will be as a star. b. It glows due to the heat of the gases in its core. c. It may become a brown dwarf. d. It generates pressure by fusing hydrogen.

A fisherman notices that one wave passes the bow of his anchored boat every 4 seconds. He measured the wavelength to be 8.5 meters. How fast are the waves traveling?

The trait for flower color in a plant has red and white alleles. The red color is the dominant trait. What is the phenotypic ratio for a cross between plants with red (Rr) flowers and white (rr) flowers?

Select the true statement regarding first-order neurons. a. First-order neurons originate in the CNS. b. First-order neuron cell bodies reside in a ganglion. c. First-order neurons descend with motor commands. d.

In an ecosystem, why can only one species fill an ecological niche?

7) Three resistors having resistances of 4.0 Ω, 6.0 Ω, and 10.0 Ω are connected in parallel. If the combination is connected in series with an ideal 12-V battery and a 2.0-Ω resistor, what is the current through the 10.0-Ω resistor? A) 0.59 A B) 2.

What was significant about the atomic theory that democrituis proposed?

What is the mechanical advantage of a pulley?

What kind of movement does the heat within the core and mantle directly generate?

Explain why Newton's first law of motion can be difficult to observe in moving objects?

No force is necessary to