How much heat is required to warm 1.70 kg of sand from 28.0 ∘c to 100.0 ∘c?

A gene is to a chromosome as a. a pea to a pod b. a front is to a back c. a bike is to a car d. a building is to a window

You add 10 drops of hot water to the cold water in a clear beaker without stirring. After a short time, the water is warm throughout. Which law of thermodynamics explains the change in temperature? third law second law first law

25. You are asked to find the area of a room that is 4.56 m long and 5.668 m wide. How many significant figures should you show in your answer? A. 5 B. 3 C. 7 D. 4

Whiatvare basic components of the hardy-weinberg model?

when a book falls from a shelf to the ground without anyone pushing on it, no work is done on the book. true or false

What feature of the ocean basin is formed when old oceanic crust is forced under continental plates

Thermal energy from the Earth's core heats rock and creates magma. This hot magma then rises toward the Earth's surface, cools, and sinks back down toward the Earth's core. Which actions below occur during this process? (multiple answers) A.

A surface is bombarded by particles, each of mass small 'm', which have velocity normal to the surface. On average, n particles strike unit area of the surface each second and rebound elastically. What is the pressure on the surface? A. nmv B.

If an atom has twelve electrons, how many electrons are in the n=1 energy level? how many electrons are in the n=2 energy level? how many electrons are in the n=3 energy level?

Which object is largest? star galaxy globular cluster planet?