Which group on the periodic table contains only metals?
the left-hand side of the table begins with group 1 element. group 1 elements begin with hydrogen. group 2 elements begin with beryllium. group 3 through group 12 are in the center of the table. the top row of these element groups include the elements scandium, titanium, vanadium, chromium, manganese, iron, cobalt, nickel, cooper, and zinc. on the right side of the periodic table are found groups 13 through 18. group 13 begins with boron. group 14 beings with carbon. group 15 begins with nitrogen. group 16 beings with oxygen. group 17 begins with fluorine. group 18 begins with helium.
along the bottom

a.
the second group

b.
the last group

c.
along the top

d.

Which of the following correctly describes the early view of catastrophism?

Air is held within a frictionless piston-cylinder container, which is oriented vertically. the mass of the piston is 0.45 kg and the cross-sectional area is 0.0030 m2. initially (state 1) the pressure of the gas is sufficient to support the weight of the piston as well as the force exerted by the atmospheric pressure ( 101.32 kpa). the volume occupied by the air within the cylinder in state 1 is 1.00 liter. one end of a spring (with spring constant k = 1000 n/m) is attached to the top of the piston, while the other end of the spring is attached to a stage that can move vertically. initially the spring is undeflected and therefore exerts no force. then the stage is then moved quasistatically downward a distance of 10.0 cm, at which point the system reaches state 2. the piston-cylinder is not insulated; rather it remains in diathermal contact with the surroundings, which are at a constant temperature of 300 k. what is the change of pressure within the container?

The mass of the sun is 1.99×1030kg and its distance to the earth is 1.50×1011m. what is the gravitational force of the sun on the earth?