A car of mass 1490 kg makes a 23.0 m radius turn at 7.85 m/s on
flat ground. What is the (minimum)
coefficient of static friction?

Avery long solenoid of inner radius 2.75 cm creates an oscillating magnetic field of the form = for this solenoid, =0.00425 t and =319 rad/s. (a)what is the maximum value of the induced electric field at a perpendicular distance 1.45 cm from the axis of the solenoid? (b) what is the maximum value of the inducted electric field at a point 5.85 cm perpendicular from the axis of the solenoid?

You've already seen the value of 9.8 in this lesson. what's this value called? what quantity does it represent?

It is really hard for me right know