How many galaxies exist?

If a net force is greater than 0 Newtons, what is the force?

What are the four types of musical instruments and what are the physical behind each type of musical instrument

Calculate the energy needed to heat 4 kg of water from 25 degrees c to 45 degrees c

According to Newton's second law of motion, the acceleration of an object is inversely proportional to which quantity?

When Lisa placed a balloon to her ear, she was able to hear what her sister was whispering from the other side of the room. When she removed the balloon, she was no longer able to hear what her sister was saying.

If a basketball travels a distance of 4 meters in 5 seconds, what is its average speed? A. 4 meters / second B. 0.8 meters/second C. 1.2 meters/second D. 5 meters/second

Discuss the correlation or connection between stars with a higher mass and the amount of fuel they have to work with

Which has the same relationship as circle:cylinder? Triangle:sphere, square:window, rectangle:box, pentagon:counter

Which training principle does this scenario represent?

What is the wavelength of a wave? A. the amount of time that one full cycle takes. B. the distance from the beginning to the end of a cycle. C. the amount of cycles that occur in a given time. D.