Q1. A planet of mass 8 × 1024 kg is at location ‹ -4 × 10^11, 7 × 10^11, 0 › m. A star of mass 7 × 1030 kg is at location ‹ 5 × 10^11, -5 × 10^11, 0 › m. What is the force exerted on planet by the star? (It will probably be helpful to draw a diagram, including the relevant vectors.)
Q2. After being accelerated to a speed of 1.26×105 m/s, the particle enters a uniform magnetic field of strength 2.00 T and travels in a circle of radius 35.0 cm (determined by observing where it hits the screen). The results of this experiment allow one to find.