A radioactive isotope has a half-life of ten days. how much of a 100 gram sample will be left after 20 days

1. Visible light has a higher frequency than infrared light. True / False? 2. Each color of visible light corresponds to a different wavelength of electromagnetic rays. True / False? 3. Ultraviolet light has a higher frequency than visible light.

A bus is traveling with a uniform acceleration of 2.75 meters/second. If the initial velocity of the bus is 16.5 meters/second, what will its velocity be after 9.00 seconds?

Which circuits correctly show Ohm's law?

The water in a lake is at 5 °C. A diver measures the pressure of the water at two different depths in the lake. He repeats the measurements on a different day when the water is at 15°C.

Crystal of a chemical in a lab slowly disappear from their container they do not become liquid this is an example of which change of state

What is a calorimeter used to measure?

When the mover pushes the box, two equal forces result. Explain why the box moves

What equation expresses the the work-energy theorem?

What is the potential energy for and object with mass of 15 Kg and 20 m above the ground?

What is the z coordinate for the above vector? A vector is r⇀ = 356 m @ θ = 115∘, φ=-30.0∘. 178 m -178 m 120 m 308 m