About how long have wastewater treatment plants been in existence? about how long have wastewater treatment plants been in existence? 50 years 120 years 190 years 220 years 300 years

Using the periodic table, explain the difference between hydrogen, deuterium, and tritium-I. e. hydrogen-1 and hydrogen-3

The diagram shows a 15-kg box resting on a wedge which has an angle of inclination of 30° and a coefficient of friction of 0.15. Find the value of the vector Fg.

A duck with a mass of 0.90 kilograms flies at a rate of 12.0 m/s. What is the kinetic energy of the duck? 130 J 5.4 J 65 J 11 J

A car travels at uniform velocity a distance of 100 meters in 4 seconds. What is the velocity of the car

pitot tube on an airplane flying at a standard sea level reads 1.07 x 105 N/m2. What is the velocity of the airplane?

A mechanic pushes a 3.60 ✕ 103-kg car from rest to a speed of v, doing 5,130 j of work in the process. during this time, the car moves 21.0 m. neglecting friction between car and road, find v and the horizontal force exerted on the car.

Anika asks Eva to roll a basketball and then a bowling ball to her. Which requires more force to roll, and why?

Why does a buoyant force act on every object in a fluid? Pressure pushing up on the bottom of the object is greater than the pressure pushing down on the top.

Give a sentence with the word velocity in it

Which description matches up correctly with each type of particle? Alpha - no mass and no charge; beta - mass of 4 and charge of + 2; gamma - charge of - 1 and mass of 0 Alpha - mass of 0 and charge of - 1; beta - mass of 4 and charge of + 2;