1. A high-speed drill reaches 2500 rpm in 0.60 s .
A.) What is the drill's angular acceleration?
B.) Through how many revolutions does it turn during this first 0.60 s ?
2. Consider a current-carrying conductor of length L placed in a uniform magnetic field of strength B. Derive the force experienced by the conductor.
3. An 4.0-cm-tall object is 25.0 cm in front of a concave mirror with a focal length of 20 cm. Determine the position of the image. What is the magnification? What is the image size?
4.Find the capacitance of a parallel -plate capacitor with area 23 cm^2, separetion distance 0.95 mm, and dielectric with constant 2.5. usee Epsilon 0 = 8.85 x 10^-12 C^2/N X M^2.