One number is three times another. Their sum is 144. What are the numbers?

What did B. F. skinnier believe drove ones behaviors

Which part of the eye controls whether or not the pupil dilates or constricts? iris retina optic nerve cornea

The distance between the 1st and 2nd maxima is 0.3 cm when the screen is located 2 m away. If d = 0.4 mm, a) what is the wavelength? b) what is the size of central peak?

A horizontal mass-spring system is in SHM. The mass is 0.25kg, the spring constant is 15N/m, and the amplitude is 20cm.

A tube, open at only one end, is cut into two shorter (nonequal) lengths. The piece that is open at both ends has a fundamental frequency of 416 Hz, while the piece open only at one end has a fundamental frequency of 678 Hz.

What is the source of energy for the process of evaporation?

How could you compare the energy carried in two different longitudinal waves

The instantaneous velocity of an object is the blank of the object with a blank

Which of the following best describes the earth's average surface temperature for the past 900,000 years? A. a steady warming trend B. fairly steady temperatures until recently C. prolonged periods of cooling and warming D.

What should you always include in a great summary? (Select all that apply) A. investigation plan B. possible errors C. predictions D. new questions