A 14000 N slippery hippo runs and then slides along the slippery ground. If the coefficient of kinetic friction between the hippo and the mud is 0.045, what force of friction slows down the hippo? 63 N

63 Kg

630 N

31,000 N

For waves in the ocean, the medium of the waves is a. air b. water c. energy d. a passing boat

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?

You notice the birds sitting on the electrical wires which of the following explain why the birds don't get shocked