1. A car speeds up as it turns from traveling due south to heading due east. When exactly halfway around the curve, the car’s acceleration is 1.8 m/s2, 23° north of east. What are the radial and tangential components of the acceleration at that point?
2. In the Bohr model of the hydrogen atom, an electron (mass =
3. A highway curve of radius 410 m is designed for traffic moving at a speed of 90 km/hr. What is the correct banking angle of the road?