Physics Answers

Acetylene gas is used in industrial works such as welding metals. The

temperature needed to weld is approximately 2200°C at 1500 psia. Calculate its

density at this given temperature and pressure in kgm per cubic meter

Find the electric field midway between a 2 -μC point charge which are 2.5 m apart.

What is the magnitude of the electric field at a distance of 1.5m from a point charge with q=3.5C?

Sphere A has a charge of +10.0 C.It is brought in contact with a neutral sphere B and then separated.Find the final charges on spheres A and B if the spheres have equal radius and if the radius of sphere B is twice the radius of sphere A

A square metal plate with a length of 0.20 m and with a charge of 9.7 x 10 -7 C.

Find the electric field of the square metal plate.

A race car makes one lap around a track of radius 60 m in 6 s. What is the average velocity of the car as it goes around the circular track? Round your answer to one decimal place.

We assume the existence of a uniform electric field E= 500 i N/C without specifying which charges are the source. To this field is added that of a point charge of 2 uc located at the origin. What is the resultant electric force acting on a charge of 5 uc located at the point (3m,4m)?

The answer is (4.66i + 2.88j)x10^-3 N but I'm not sure how they got it?

There is a point charge Q1 at x= 0 and a charge Q2 at x=d. What is the relationship between these charges if the resulting electric field is zero at the following points: a) x= d/2 b) x= 2d c) x= -d/2?

A 1.5 kilogram projectile launched at some angle leaves the ground with kinetic energy totally 250 joules at the highest height, its kinetic energy is 105 joules. To what vertical height did the projectile rise?

A proton is placed in uniform electric field that is directed downward and has a magnitude of 5.0 N/C. What is the magnitude and direction of the electric force experience by the proton?