What must exist for electric charges to flow?

If a tank contains water 4 m deep, what is the pressure at the bottom of the tank? (Neglect the atmospheric pressure.)

Select the correct answer. G = 6.67 * 10-11 N·m2/kg2 Me = 5.598 * 1024 kg What is the velocity of an Earth satellite that is in a circular orbit with a radius of 7.5 * 107 meters measured from the center of the Earth? A. 2.9 * 103 meters/second B. 2.

What hazard is associated with ionizing radiation? It causes radiation sickness as a result of any exposure. It undergoes radioactive decay, which can damage DNA in cells.

A chain link fence should be cut quickly with a

Do all types of waves need a medium to travel through

Why does icing sugar dissolve more rapidly than granular sugar?

At t = 0 the components of a radio-controlled car's velocity are vx = 0.5 m/s and vy = 1.2 m/s. Find the components of the car's velocity at t = 4.

2) A window washer pulls themselves upward using a bucket pulley apparatus. A) How hard must pull downward to raise herself slowly at a constant speed? B) If she increases this force by 15%, what will her acceleration be?

A star with an original mass of 8 to 25 solar masses will ultimately become a? a) red giant b) white dwarf c) neutron star d) main sequence star

Racewalking involves more impact than running. true false