When using science to investigate physical phenomena, which characteristic of the event must exist?

a. predictable

b. observable

c. provable

d. readable

A parachutist is falling with terminal velocity. Which of the following statement is not correct? a) Gravitational potential energy is converted into kinetic energy of the air b) G. P. E is converted into K. E of the parachutist c) G. P.

Calculate the average value of an AC signal with a peak amplitude of 10V and a frequency of 10 kHz.

Which object will NOT allow an electric current to flow through it? A) copper wire B) an iron nail C) a rubber eraser D) an aluminum key

A person of weight 40kg is running with a velocity of 20m/s. Find power.

What is a cloud model

Which of the following choices best represents a potential stressor?

How do you distinguish between speed, velocity, and acceleration?

The force of friction on a sliding object is 10n. the applied force needed to maintain a constant velocity is:

What is the best hypothesis to use for this investigation

Quantum physics would most likely be needed to understand the motion of which of the following? A. an atom B. a cell C. a ball D. a galaxy