The frequency of a periodic signal is 20 MHz, state it's period?

A ball is thrown downward at 5ms from roof 10m high its velocity when it reaches the ground is?,

Which object exerts more gravitational force, object A with a mass of 25 grams and a density of 2 g/cm3 or object B with a mass of 55 grams and a density of 0.5 g/cm3?

What is significant about the temperatures - 40° F and - 40° C?

Which best describes the materials that make up an electrical cord?

An indication of no linear relationship between two variables x and y would be: a. a coefficient of correlation of - 1 b. 0.5 c. a coefficient of determination of 1 d. a coefficient of correlation of 1 e. a coefficient of correlation of 0

The transfer of energy between two objects by electromagnetic waves is called

What is the unit of k (spring constant) in SI system?

The teacher prepares 2.50 liters (L) of a salt solution for a class experiment. How many quarts (qt) are in 2.50 L? (1 quart = 0.943 liters)

What is a scavenger give some examples

What is a mealworm a worm, an insect or an amphibian