Africtionless circular ring 1.00 m in diameter is placed flat on the floor, and a 100-g ball is sent around its inside surface with an initial speed of 2.00 m/s. after one full revolution, the speed of the ball measured to be 1.85 m/s. (a) how much energy is converted to internal energy, heating up the ball and the floor, per revolution

What are igneous intrusions and extrusions

Suppose you have a box. which of these is not necessarily a true statement regarding the relationship between the force applied to the box, the work done on the box, and the distance the box is moved? a. if the box is not moved, no force is being applied to the box. b. if no force is applied to the box, no work is done on the box. c. if work is done on the box, then a force is applied to the box. d. if work is done on the box, then the box is moved a distance.

Hydrogen atoms are excited by a laser to the =4n=4 state and then allowed to emit. what is the maximum number of distinct emission spectral lines (lines of different wavelengths) that can be observed from this system? 8 6 2 7 4 5 1 3 calculate the wavelength of the 4⟶14⟶1 transition. =λ=