How can a scientist ensure that his or her data are reliable?

What is units and dimensions? what are dimensions less quantities?

In a playground, there is a small merry-go-round of radius 1.20 m and mass 160 kg. Its radius of gyration is 91.0 cm. (Radius of gyration k is defined by the expression I=Mk2.) A child of mass 44.0 kg runs at a speed of 3.

a rocket launched into outer space travels 2.4 times 10^5 km during the first 6 hours after launching. what was the rockets average velocity in m/s and km/hr

If, while you're machine stitching, your fabric puckers and the stitches break, what should you do first? a. Lower the tension. b. Raise the tension. c. Change the thread. d. Change the needle.

What will happen to the absorption and/or emission spectral lines of an object moving away from Earth at high speed? a. They will be shifted toward the blue end of the spectrum. b. They will be made more intense. c.

The basic building block of life is

What is the reason for Mary's resemblance to her mother. Mary's relatives and friends feel she had her mothers feature

Is a balance scale used to describe how much matter is in an object

At distances greater than 2 femtometers, the nuclear strong force is stronger than (select all that apply): gravity electromagnetic forces nuclear weak force none of the above

Identifying the Functions of Parts of the Ear Which part of the ear changes sound to a signal that the brain can understand? Which part of the ear carries the signal to the brain?