a cannonball is launched horizontally from the top of a 108 m cliff with an original speed of 31.1 m/s

Which of the following are considered noble gases? a. bromine b. neon c. argon d. chlorine

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?

Using the free-body diagram, calculate the net force acting on the sled. is the sled in a state of dynamic equilibrium?