Where do cosmic rays come from?
Earth's atmosphere
Distant planets
Star explosions
Laser beams

Aregion of space in which a measurable gravitational force is indicated by the force exerted on a test mass is called

Consider a one meter long horizontal pipe with a constant 100 cm^2 cross sectional area. water flows rightward into the pipe at x = 0 with flow velocity 02m/sec at every point within the pipe intake area. at x=1, the rightward flow rate is 0.192 m/sec. assume the water is a conserved quantity in the pipe, so there must be a leak (a sink) somewhere in the pipe. 1. compute net volumetric flow of the source if the system to be in equilibrium. 2. now assume the pipe in the problem has no leaks. compute the net volumetric rate of change for the system.

Acar travels in reverse. it covers 150 meters in 12 seconds what is the velocity of the car what is the speed of the car