Which has more mass, a kilogram of feathers or a kilogram of iron?

What do scientitsts do to easily share mesurment data they can understand

A wave has a frequency of 900 Hz and a wavelength of 200 m. at what speed is the wave traveling

You travel 20.0 mph for 0.500 hour, 40.0 mph for 1.00 hour, 30.0 mph for 0.500 hour, and 50.0 mph for 2.00 hours. What is the average speed? 165mph 65mph 23.5mph 41.3mph

A housefly with a mass of 0.00100 kilograms zooms through the room at a rate of 2.20 m/s. How much kinetic energy does it have?

Artistide rows his raft across the river. If he hits the dock head on to stop what will happen to the ball?

The planet earth orbits around the sun and also spins around its own axis. 33% part (a) calculate the angular momentum of the earth in its orbit around the sun in kg • m2/s

An electron experiences a magnetic force of magnitude 4.60 x 10^-15 N when moving at an angle of 60.0° with respect to a magnetic field of magnitude 3.50 x 10^-3 T. Find the speed of the electron.

If you jump vertically while inside a fast-moving train that is slowing down, you land: a. a bit behind your original position. b. at your original position. c. a bit ahead of your original position.

In the sky, you see a red star and a blue star. Which one is hotter? A. The red star B. They are probably the same temperature C. The blue star D. The answer will depend on how far away the stars are

Describe the relationship between force and mass when the acceleration of two objects remain constant