An element's mass number tells the number of protons in its nucleus true or false?

Does decomposing water require high activation energy

which of the following does not represent a significant negative environmental impact of using nuclear fuel

A 30 kg child on a 2 m long swing is released from rest when the swing supports make an angle of 34 ◦ with the vertical. The acceleration of gravity is 9.8 m/s 2. If the speed of the child at the lowest position is 2.

The amp is the basic unit of electrical A. current. B. voltage. C. power. D. energy.

Describing motion using words instead of numbers is called ... kinematics?

The smallest hydrocarbon that has isomers is

A motor does 3,441 joules of work in 13.66 seconds. What is the power of the motor?

The distance from the Earth to the Sun equals 1 AU. Neptune is 30 AU from the Sun. How far is Neptune from the Earth?

The second law of thermodynamics states that: Group of answer choices The entropy of a perfect crystal is zero at 0 K. The entropy of the universe is constant. The energy of the universe is increasing. The entropy of the universe is increasing.

A student is testing the kinematic equations for uniformly accelerated motion by measuring the time it takes for light-weight plastic balls to fall to the floor from a height of 3 m in the lab. The student predicts the time to fall using g as 9.