Cordelia researched Ernest Rutherford's experiments. Read her summary below and find the error.

Rutherford's experiment showed the positively charged particles were only deflected by a small percentage of the atoms. If the positive charge in the atom was spread throughout the atom, this could not happen. This meant that the atom must be composed mostly of solid positive particles.

A. Error is in sentence 2. If the neutral charge was spread through the atom, this could not happen.

B. Error is in sentence 1. Positively charged particles were deflected by a high percentage of atoms.

C. Error is in sentence 1. Experiments showed that only a few atoms deflected negatively charged particles.

D. Error is in sentence 3. The atom must be composed mostly of empty space.

Askydiver weighing 140 lb (including equipment) falls vertically downward from an altitude of 19,000 ft and opens the parachute after 18 s of free fall. assume that the force of air resistance, which is directed opposite to the velocity, is of magnitude 0.55|v| when the parachute is closed and is of magnitude 14|v| when the parachute is open, where the velocity v is measured in ft/s. assume that acceleration due to gravity has magnitude 32 ft/s/s; remember that weight is the product of mass and gravitational acceleration. (a) find the speed of the skydiver when the parachute opens. (b) find the distance fallen before the parachute opens. (c) what is the limiting velocity vl after the parachute opens? (d) determine how long the sky diver is in the air after the parachute opens. (e) plot the graph of velocity versus time from the beginning of the fall until the skydiver reaches the ground.

In which of the following would the particles move most rapidly? a. ice at -20 °c b. water at 20 °c c. steam at 110 °c d. boiling water e. ice at 0 °c

Explain what happens at the saturation point when adding salt to water at room temperature.