Two grains of sand carry a charge of 5.2 x 10 -11 C and -8.6 x 10 -5 C are separated by a
distance of 0.03m.

Trumpeter a holds a b-flat note on the trumpet for a long time. person c is running towards the trumpeter at a constant velocity. person b is running away from the trumpeter at the same rate. person d is standing still the whole time. which person hears a frequency that is lower than the b-flat?

If the wheels lock when braking suddenly the vehicle: a: loses traction b: lose steering wheel ability c: gain speed slightly d: gain steering ability

What is the average speed of a car that travels 40 mph for 1 hour and 60 mph in another hour?