Astronauts on the Moon set up a simple pendulum of the length 1 m and measured its period to be 4.93 s. What is the acceleration due to gravity to the moon?

Which of the following elements is in the same period as phosphorus? a. carbon c. nitrogen b. magnesium d. oxygen select the best answer from the choices provided a b c d

The charge on an electron is 1.60218 × 10−19 c and its mass is 9.10939 × 10−31 kg. how strong a magnetic field must be experienced by the electron if its path is a circle of radius 5.5 cm? answer in units of t.

Ascientific blank must be testable and capable of being proven false?