Tarzan swings on a 26.2 m long vine initially inclined at an angle of 28° from the vertical. (a) what is his speed at the bottom of the swing if he starts from rest? m/s (b) what is his speed at the bottom of the swing if he starts with an initial speed of 3.00 m/s? m/s

An important dimensionless parameter concerned with very high-speed flow is the mach number, defined as v/c, where v is the speed of the object such as an airplane or projectile, and c is the speed of sound in the fluid surrounding the object. for a projectile traveling at 1170 mph through air at 50 ˚f and standard atmospheric pressure, what is the value of the mach number?

Is there a point between a 10 nc charge and a 20 nc charge at which the electric field is zero?

Four objects each with charge +2.0×10−7c are located at the corners of a square whose sides are 2.0 m long. part a what quantities can be determined using this information? check all that apply. the electric force on a charged object placed at the center of the square. the mass of each object. the total electric potential energy of the system consisting of the four charged objects. part b find the electric force on a charged object placed at the center of the square.