Which is not a property of a pure substance

A slinky is stretched across a classroom to 9 meters. A compression travels along the slinky at a velocity of 2 m s. How long does it take the compression to travel the entire 9m length of the classroom?

A ramp leading to the freeway overpass is 210 feet long and rises 31 feet. what is the measure of the angle formed between the ramp and the freeway?

Uma pessoa exercita-se em uma esteira rolante manual. Ela andou 20 minuots com velocidade de 5.4km/h e consumuiu 200 quilocalorias. Qual a distancia percorrida por essa pessoa se estivesse na rua? Qual seu deslocamento em relação ao solo?

You and a friend each drive 53 km to the same destination. You travel at 88.8 km/h and your friend at 92.6 km/h. How long will your friend wait for you at the end of the trip?

What is the relationship between frequency and wavelength?

Most of the mass of the Milky Way exists in the form of: a.) starsb.) gasc.) dustd.) dark matter

A 55kg cart is pushed by a force of 225 n. what is the carts acceleration?

F we wanted to compare muscular endurance between a very large person and a very small person, what method would be the best method to use? a. absolute method b. maxing out c. callisthenic method d. fixed percentage of rm method

After creating a question and forming a hypothesis, what is the next step in the scientific method

Roger sees water balloons fall past his window. He notices that each balloon strikes the sidewalk 0.51 s after passing his window. Roger's room is on the second floor, 10 m above the sidewalk.