The table lists several radioisotopes that have technological uses. Which radioisotope would be used by both archaeologists and botanists (scientists who study plants) ? uranium-238 carbon-14 iodine-131 technetium-99

True or false a liquid does not have a definite shape, but it does have a definite volume.

How does height impact potential energy

A member of the cross country team is training for the big race. She runs 7.85 km one afternoon. How many miles is this?

A box of mass 14 kg sits on an inclined surface with an angle of 52degrees. What is the component of the weight of the box along the surface?

Julia produces a 2 mA current by moving the south pole of a bar magnet into a solenoid. The solenoid contains 150 loops of wire. Which change should Julia make to generate a larger current

15 grams of liquid plastic are frozen in a physical change that increases the volume. What can be known about the plastic after the change?

A Car is lifted a certain distance in a service station and therefore has potential energy relative to the floor. if it was lifted twice as high, how much potential energy would it have?

How long does it take a 750-w coffeepot to bring to a boil 0.75 l of water initially at 11°c? assume that the part of the pot which is heated with the water is made of 280 g of aluminum, and that no water boils away?

An electric motor rotating a workshop grinding wheel at a rate of 151 rev/min is switched off. Assume constant angular deceleration of magnitude 2.23 rad/s 2. Through how many revolutions does the wheel turn before it finally comes to rest

1. What is the atomic number of an atom? Why is this number important? |