Two elements are found in the same column of the periodic table. You would expect these elements to have

the same number of electrons

very different properties

similar properties

the same atomic mass

a 7.00 N weight is raised from the ground to 1.80 m above the ground. how much work is done on the weight

Sound waves are actually a form of what kind of energy? A. radiant B. thermal C. mechanical D. electrical

Select the correct answer. Light incident on a surface at an angle of 45° undergoes diffused reflection. At what angle will it reflect? A. only at angles less than 45° B. only at angles greater than 45° C.

What is the maximum and minimum wavelength of echolocation?

A 0.500-kg mass suspended from a spring oscillates with a period of 1.18 s. How much mass must be added to the object to change the period to 2.07 s?

An object travels 8 meters in the first second of travel, 8 meters again during the second second of travel, and 8 meters again during the third second. Its acceleration is A. 0 m/s^2 B. 8 m/s^2 C. 16 m/s^2 D. 32 m/s^2

Why does life be life

How are hypotheses and theories related to each other?

During the refrigeration cycle, what does the refrigerant do? Absorbs and releases thermal energy by first vaporizing then condensing. Absorbs and releases thermal energy by first condensing then vaporizing.

Find the unbalanced force required to accelerate a 6kg mass at 3ms