Atoms of which element have two protons and two electrons?

a. Carbon

b. Helium

c. Hydrogen

d. Lithium

Why don't' we use vacuums anymore to collect hair and fibers?

Which type of radiation on the electromagnetic spectrum has the greatest energy and why?

A stone is dropped down a well and hits the water 2.50 s later. What is the depth from the edge of the well to the water? 61.3, 12.3, 30.6

This is the simplest type of fold where the rock bends like this: a. syncline b. dome c. anticline d. monocline

The Earth exerts a gravitational force of 920 N on an object. What is the object's mass in kg.

Suppose gene A on the left chromosome is damaged and no longer functions. what form of the trait would show? Why?

What is the use of scientific knowledge and research for an action

How do evaporation and condensation relate to heat

Resistance = 0.1 ohm Current = 60 amps Voltage = ? 0.6 6 60 600

The velocity of a roller coaster as it moves down a hill is where v0 is the initial velocity and h is the vertical drop in feet. An engineer wants a new coaster to have a velocity of 90 feet per second when it reaches the bottom of the hill.