True or false, only a radioactive isotope will have a half-life

In an electron cloud, an electron farther east away from the nucleus has?

Mendeleev gave the name eka aluminum to an

Velocity vs time graph Time (sec) Displacement (m) Velocity (m/s) 0 0 0 0.5 1.25 5 1 5 10 1.5 11.25 15 How is the acceleration related to the time for the data table? A) The acceleration is a constant. B) The acceleration is constantly decreasing.

A 0.10 newton spring toy with a spring constant of 160 newtons per meter is compressed 0.05 meter before it is launched. When released the spring toy pops up and reaches a maximum height of 1.5 meters.

In his proposed model of the atom, JJ Thomson imagined the atom contained

A student pulls a 60 Newton sled with a force having a magnitude of 20 Newton's. What is the magnitude of the force that the sled exerts on the student

The four basic properties of lighting are

Which of the following is the correct SI unit to use in measuring the mass of a boulder A. ounces B. tons C. kilograms D. pounds (I'm sorry If I didn't pick the right subject!)

Which of the following can be thought of as either a wave or a particle? a. light b. an electron c. a proton d. all of the above

Universal law in effect at all times?