In an experiment to create a pendulum, each member of the group measured the length of the string to be a slightly different value. How do we describe these small differences when reporting the length?

Which of the following is NOT a factor that affects the apparent brightness of a star as seen from Earth? A. how old the star is B. how big the star is C. how hot the star is D. how far away the star is

Which three of the five items would be best to include in a safety contract?

If you drop a tennis ball from the top of a ladder, at what rate will it accelerate

What is one way to increase the amplitude if a wave in a medium? A. By applying a vibration at the natural frequency of the medium B. By increasing the velocity of the wave source C.

What are hypotheses suggesting why urban children have more food allergies than children from rural areas? Select the TWO answers that are correct.

A rectangular coil with sides 0.10 m by 0.25 m has 500 turns of wire. It is rotated about its long axis in a magnetic field of 0.58 T directed perpendicular to the rotation axis.

Stars set about how many minutes earlier each day? A. 8 B. 6 C. 4 D. 2

Whose atomic theory explains how atoms emit and absorb light

Closed clusters are groups of closely grouped stars that are located along the spiral disk of a galaxy. a. True b. False

Five forces are exerted on a box as follows: 10 N south 20 N north 50 N east 35 N west 15 N west. What is the resultant force?