Can you

1) this type of dating would be used to identify a frozen woolly mammoth
a) uranium-lead
b) potassium-argon
c)radiocarbon
d)rubidium strontium

2) petrified wood is an example of a placement remain
a) true
b) false

3) most index fossils are still living
a) true
b)false

The graph describes the motion of an object. the object moves with from a to b. it from b to c. it moves with from c to d.

Suppose a wire with a current is pushed upward by a magnetic field. how would the wire move if the direction of the current reversed? explain your answer.

Why does the equilibrium position of the spring change when a mass is added to the spring? will the mass oscillate around the new equilibrium position of the spring or the previous position without a mass attached to the spring? if the equilibrium position of the spring changes by 20 cm (assuming no initial mass) when a mass is added to the spring with constant 4.9 kg/s^2, what is the mass of the object attached to the spring?