What is the magnitude of the force of gravity between two 1 000 kg cars which are separated by a distance of 25.0 kilometers on an interstate highway? The force between these two cars will be (Hints--you need all distances to be in meters and all masses to be in kg; use Newton's Law of universal Gravitation. You may assume that the cars' masses are both known to the nearest kilogram, so your answer should have 3 significant figures.)

When a spring is compressed, the energy changes from kinetic to potential. which best describes what is causing this change? work power gravitational energy chemical energy

True or false when elements combine to form a mixture, the resulting chemical properties may be very different from those of the elements that make it.

Two 1.20-m nonconducting wires meet at a right angle. one segment carries + 2.50 µc of charge distributed uniformly along its length, and the other carries - 2.50 µc distributed uniformly along it, as shown in fig. 21.50. ( a. find the magnitude and direction of the electric field these wires produce at point p, which is 60.0 cm from each wire. ( b. if an electron is released at p, what are the magnitude and direction of the net force that these wires exert on it?