2 conducting spheres have identical surface areas. sphere A has charge of 4.50 uc. sphere B has a charge of -2.40 uc. spheres A nd B are brought into momentary contact and separated to a distance of 2.50 cm

A man who is 6.0 feet tall wishes to install a mirror on his wall so that he can see all of his body length, but no more. After many rough sketches, he concludes that the mirror should be approximately...?

a device accelerates a projectile from rest using magnetic forceon a on current carrying wire. The wire has a length 70.0cm and a mass of 15.0kg. This wire is totally contained in a perpenducular magnetic field of 1.85 T, and the 2 rails that allow this wire to slide along are 1.0 m long. If this wire is suddenly provided with 1.00 x10⁴ of current what will be the velocity of the wire when it leaves the rail.

a lightning strike transfers 210 C of charge to the ground within 1.5x10^-3 s (1.5 ms). The current during the lightning strike is?

An increasing net force is applied to a 20 kg spacecraft in intergalactic space.

The spacecraft is traveling at 25.0 m/s in the direction of the applied force after 2.0 s.  It's velocity after 6.0 s is a.bc x 10^d m/s.  The values for a, b, c, and d are _, _, _, and _.

yo i need help om physics, specifically on the electricity unit. The charge by induction part is confusing as shit and i don't get what the ground does. 

THe electric feild intensity inhte region between tow deflecting plates of an electronic deflection apparatus within CRT television tube is 3.00 x 10^4 N/C. Determine the force on an electron passing between these plates. What acceleration does the electron experience.

1.A 950 kg car is moving west when it collides with a 1800 kg truck moving north. After the collision, the car is moving at 22.0 km/h at 31oW of N and the truck is moving at 17.0 km/h at 25oN of W. Determine the speed of both vehicles before the collision.

Find the energy equivalence of the mass of an electron.