Why are the surface features of the moon essentially unaltered since youth

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

Which branches of natural science include the study of an organism that lived 10 million years ago

For the car in the picture ,in which direction is the normal force? -into the screen -down -out of the screen -up