How many valence electrons does a neutral atom of hydrogen have

In what era did the first land plants appear?

The ph indicator bromothymol blue turns yellow when co2 gas is added to a solution and blue when co2 is removed from a solution. which statement is a hypothesis you could test using a solution with bromothymol blue? a.

A circuit contains a 12-volt battery and two 3-ohm bulbs in series. a. Calculate the total resistance of the circuit. b. Calculate the current in the circuit. c. Calculate the power of each bulb. d. Calculate the power supplied by the battery.

If you stop your bike very fast and fly over the handlebars which of newton's 3 laws would that be

Light cannot be linearly polarized by: transmission reflection diffraction diffraction

Resistors in parallel together contain less resistance than resistors in series together. Create an analogy to explain this phenomena and post it here.

Unlike the idealized voltmeter, a real voltmeter has a resistance that is not infinitely large. part a a voltmeter with resistance rv is connected across the terminals of a battery of emf e and internal resistance r.

The acceleration of an object is the slope of its velocity-time graph. True False

When a cannon fires a cannonball, the cannon will recoil backward because the?

True or False: As we learn more about organisms how we classify them can continue to change. O True O False