The number 0.00243 has how many significant digits?

a. 3

b. 4

c. 5

d. 6

A lab assistant has been given data with units from an experiment to enter into the computer. Unfortunately, there are only numbers and no labels. Which of the following could be a wavelength? A. 10 m/s B. 20 Hz C. 30 cm D. 40 s

An electric heater of 1000w is used for 2 hours a day. What is the cost for using in for a month of 28 days, if 1 unit costs 3.00 rupees.

The reactivity of an atom arises primarily from ___. a. the energy difference between the electron shells. b. the potential energy of the outermost shell. c. the average distance of the outermost shell from the nucleus. d.

Which is least likely to cause a landslide? A. The force of gravity B. The growth of vegetation C. An increase in the slope of a hill D. Saturation of the ground by water

Describe a situation when you might travel at a high velocity but with lo acceleration

Whats a similarity between distance and displacement

What is the difference between analog and digital sound transmission?

A 20 kilogram ball rolls down a 10 meter ramp at the rate of 15 meters per second.

Why does the falling speed of a ball keeps increasing every second when it is dropped from a building?

In your own words describe an interaction between the chromosphere and the hydrosphere