What would be the final temperature if you mixed 1 kg of 20℃ water with 2 kg of 40℃ water?

If a 340 N girl sits on a seesaw and is lifted 1.4 m in 1.6 s, how much work was done by the child on the other side?

What kind of gas cloud is most likely to give birth to stars? what kind of gas cloud is most likely to give birth to stars? a cold, dense gas cloud a hot, dense gas cloud a hot, low-density gas cloud a cold, low-density gas cloud?

Suppose V = 24 V, I = 0.1 A, mw = 46 gm, cw = 4.18 J/g∘K, mr = 8 g, and cr = 3.7 J/g∘K. If the water is initially at room temperature, how long will it take for the water to heat up 2 K? (Hint: dT/dt is approximately equal to ΔT/Δt.)

Galileo's observational contributionsGalileo Galilei was the first scientist to perform experiments in order to test his ideas. He was also the first astronomer to systematically observe the skies with a telescope.

What is the change all living things undergo as the grow

Which of the following statements about Em waves is true? A. Em waves all have the same speed B. Em waves all have the same wavelength C. Em waves only travel through water D. Em waves all have the same amount of energy

A teacher has asked four students to state a scientific theory. Which student is correct?

What are the two main currents that affect the US on the east and west coast?

What role do volcanoes play in the flow of energy and cycling of matter on earth?

How does uniform linear motion differ from uniform circular motion?