Улитка движется из т. А
в направлении, показанном на рисунке и, описав одну полную "восьмёрку", возвращается в начальное положение через

мин

с
Радиус
большой окружности в
раза больше радиуса
малой. Скорость улитки постоянна по модулю всё время движения и равна

мм
с
Определите радиус
малой окружности. Ответ выразить в
см
округлив до десятых. Длина окружности равна
где
— радиус окружности. Число

1. a net force of 100 newton’s is applied to a wagon for 5 seconds. this causes the wagon to undergo a change in momentum of

Aperson gives a shopping cart an initial push along a horizontal floor to get it moving, and then lets go. the cart travels forward along the floor, gradually slowing as it moves. consider the horizontal force(s) on the cart while it is moving forward and slowing. which of the following statements is correct? (a) both a forward and a backward force are acting on the cart, but the forward force is larger. (b) only a forward force is acting which diminishes with time. (c) both a forward and a backward force are acting on the cart, but the backward force is larger. (d) only a backward force is acting, no forward force.

Which of the following changes will increase the capacitance of a parallel-plate capacitor? (there could be more than one correct choice.) a) increase the charge on the plates b) decrease the poten5al between the plates c) increase the potential between the plates d) introduce a dielectric material between the plates e) decrease the separation between the plates