A2.4kg cannon is used to propel a 56-gram tennis ball with a speed of 160 m/s. what is the recoil speed of the cannon, tennis ball, and total before and after? what is the velocity?

Modern atomic theory states that the atom is a diffuse cloud of surrounding a small, dense nucleus. a) electron b) neutron c) proton d) quark eliminate

In a system, when potential energy decreases, then entropy also decreases. true false

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.