A6 kg block is sliding down a horizontal frictionless surface with a constant speed of 5 m/s. it then slides down a frictionless ramp to another horizontal frictionless surface which is 2 m lower than the first horizontal surface. what is the constant speed with which the block is now sliding along this new horizontal surface?

Two conductors, a and b, are each in the shape of a tetrahedron. but of different sizes. they are charged in the following manner: 1. tetrahedron a is charged from an electrostatic generator to charge q. 2. tetrahedron a is briefly touched to tetrahedron b. 3. steps 1 and 2 are repeated until the charge on tetrahedron b reaches a maximum value. if the charge on tetrahedron b was q/4 after the first time it touched tetrahedron a. what is the final charge qbmax on tetrahedron b?

Which statement is the best definition of an atom? a) anything that has mass and occupies space. b) the smallest particle that has the properties of an element. c) a substance that cannot be broken down chemically into simpler substances. eliminate d) the smallest unit of a substance that exhibits all of the properties characteristic of that substance.

Another word for electromagnetic energy is a. heat b. force c. matter d. radiation