The curl-up test is performed on a mat that is marked for your hands to slide up on once your fingertips reach the marks line you have completed a successful curl up true or false PLEASE ANSWER

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?

The strong nuclear force acts over a small distance than the electrostatic force. true or false

Use 4 to 5 complete sentences, explain the concepts of beats and how beats are produces.