A worker bumblebee transports pollen from a flower to the hive. Assume the mass of a worker bumblebee is 0.21 g, that it is carrying pollen grains with a total charge of +0.15 PC, and that when you observe it, it is flying northwest at a speed of 3.7 m/s. At this location, the earth's magnetic field is 40 µT (pointing north) and the local electric field is 100 V/m (pointing down, towards the center of the earth).

1. Determine the gravitational force acting on the bee.

2. Determine the electrical force acting on the bee.

3. Determine the magnetic force acting on the bee.

4. Rank the magnitudes of these forces. Which is the most significant? 5. Determine the total force acting on the bee. (Remember to include the magnitude and direction of all vector quantities in your answers!)