A van is traveling at a constant speed of 54km. h^-1 in a 40km. h^-1 and the policeman starts his car from rest just as the van passes him. the police car accelerates at 2m. s^-2 until it reaches a maximum velocity of 20m. s^-1. Which vehicle between the van and police car will be ahead at the time of 10m. s^

explanation:

could i give you a exaplo that could you?

the answer is b, have negligible mass

the higher the current the higher the mag field around it the higher the influence on the compass

answer: the metamorphic rocks are formed when they are exposed to high pressure and high temperatures. this happens when one of the earth's plates comes in contact with the other plate by traveling in opposite directions, straight into each other or slipping under one another. the friction that is caused by this activity results in   melting of rocks and when it cools they are known as metamorphic rocks. this process needs a controlled amount of pressure and temperature otherwise it may turn into magma.