How would the balloons interaction with each other change if balloon #1 has more negative charges on it? Explain.

Asample of aluminum foil contains 8.60 × 1023 atoms. what is the mass of the foil?

Imagine that you push on a large rock. at what point does your effort change the rock’s mechanical energy?

In november 1987, a massive iceberg broke loose from the antartic ice mass and floated free in the ocean. the chunk of ice was estimated to be 98 mi long, 25 mi wide, and 750 ft thick. a typical backyard swimming pool contains about 24,000 gallons of water. how many of these pools could you fill from the water in this iceberg? (assume the iceberg is a rectangular solid of the above dimensions and consists of water only). express answer in scientific notation.