The pony express was a popular method of moving the mail quickly in the mid-1800s. suppose a pony's momentum is calculated to be
the mass of the pony is 450 kg. what is the magnitude of the pony's velocity?
a) 16 km/hr
b) 320 km/hr
c) 630 km/hr
d) 160 km/hr

Write maxwell's equations and discuss the terms involved and the results of each equation in classical electrodynamics. if it is possible to write these equations in integral form, give the integral forms. find the wave equation for electromagnetic waves from the maxwell equations. what is the propagation velocity of electromagnetic waves in space according to the wave equation you find?

Why is metal often used for cooking pan?

A1,700kg car is being used to give a 1,400kg car a push start by exerting a force of 140n the impulse on the smaller car during the 30.0s of contact is +670kg*m/s. what is the impulse of the smaller car on the larger car? -814 kg*m/s 0kg *m/s -670kg*m/s -550kg*m/s