Which event is an example of a contact force?

A.

a nail being attracted to a magnet

B.

an electric charge jumping from a sweater to a person

C.

a leaf falling from a tree

D.

a person pulling a sled

How many moles of solute are contained in 200 milliliters of a 1 M solution? (1) 1 (3) 0.8 (2) 0.2 (4) 200

Which of these scenarios involve a reaction that is at equilibrium? A. The reaction is producing more products than reactants. B. The reaction is producing more reactants than products. C. The amount of products and reactants is changing. D.

Rick runs 100 feet in 20 seconds what's his speed?

Assume prices increase from $15 to $18, yet quantity remains at 25. What is the total revenue? A: $450 B: $240 C: $625

Calculate the molar mass FeCl3 Fe2 (SO4) 3 PbO PbO2 Pb3O4

Explain mitosis and meiosis in your own words.

What device changes mechanical energy into electrical energy? Question 4 options: transformer generator copper wire light switch

Reaction rates are affected by how often the particles collide true false

A 25 N and 5 N force pull to the right. Friction is 10 N. If the object is 5 kg, find the net force and acceleration.

What properties of matter are intensive independent of their size