A beam on a wall is held up by a string. the string is 4 m from the wall with a 30° angle. The other side of the beam there is a 20.0 kg weight 2 m from the string. what is the tension

this means that the temperature of both substances will be equal

we need to know the time interval during which the force acts. impulse of force = momentum change

the minimum amperage that the current in this wire would have to have so that its weight is completely supported by the magnetic force due to earth's field, assuming that no other forces except gravity act on it

igneous rocks also form where plates converge. the subducting plate melts as it sinks into the crust of the earth, and the melt rises into the overriding plate forming volcanoes. metamorphic rocks are formed mainly in the lithosphere, wherever there is high pressure and high temperature. -woods