Can someone me? i think it might be (d) but i'm not i need the answer as soon as possible!

which best explains why a washing machine represents an open system?

(a) it has multiple cycles, such as wash or spin

(b) most washers can use a variety of laundry detergent brands

(c) the amount of wash in a load varies

(d) water and power come from external sources

Your town is considering building a biodiesel power plant describe at least two advantages and two disadvantages

Imagine that you have two balloons (or, better yet, actually inflate two balloons, if possible). create static electricity around one of the balloons by rubbing it against your hair or your sweater and then bring that balloon close to the other balloon, which has not been charged. try this with at least one other object—and for variety in the discussion, avoid using an object already described by your classmates. then, for your initial post to the discussion, answer the following questions: what happened with the two balloons?

The total amount of energy contained in an object