The half-life of cobalt-60 is 5.3 years. If you have a sample that contains 10.0 g of the isotope, how much will be left after 15.9 years?

A. 2.5 g

B. 5.0 g

C. 1.25 g

D. 0.625 g

Momentum is the mass of an object multiplied by its velocity. a. True b. False

How are grains and vegetables alike and different

Tidal power can be generated by man without investing a lot of energy into the process. True False

What causes the curved, upper surface of water that commonly appears when using a graduated cylinder?

What would be three forces acting on a roller coaster? I have gravity, air resistance, but I can't think of the third.

What two equations can be used to determine the speed of a wave

Which force has an infinite range and is always attractive?

A ramp with a mechanical advantage of 8 lifts objects to a height of 1.5 meters how long is the ramp

Sodium, atomic number 11, forms an ionic bond with an atom of an unknown element. What is one possible choice for the ther element in the compound?

A ship leaves the island of Guam and sails a distance 255 km at an angle 49.0 o north of west. Part A: In which direction must it now head so that its resultant displacement will be 125 km directly east of Guam?