A voltmeter with resistance RVRVR_V is connected across the terminals of a battery of emf EEEMF and internal resistance rrr. Find the potential difference VmeterVmeterV_meter measured by the voltmeter.

Electric charge is uniformly distributed inside a nonconducting sphere of radius 0.30 m. the electric field at a point p, which is 0.50 m from the center of the sphere, is 15,000 n/c and is directed radially outward. what is the maximum magnitude of the electric field due to this sphere

This is for my 8th grade science class, i really don’t understand. can someone me? , lol.

Aracecar driver has to hold on tightly when going around a banked curve. approximately what is the centripetal force on a 2220.0 kg car going around a circle with a diameter of 190.0 meters at 25.0 m/s?