The speed of a wave is 1500 m/s. What is the frequency of the wave if the wavelength is 2 m? O 1502 Hz
O 750 Hz
O 375 Hz
O 300 Hz

What is the role of the ocular lens?

Under the action of a constant force an object accelerates at 7.8 m/s2. what will the acceleration be if (a) the force is halved? (b) the object's mass is halved? (c) the force and the object's mass are both halved? (d) the force is halved and the object's mass is doubled?

A10nc charge sits at a point in space where the magnitude of the electric field is 1500 n/c. what will the magnitude of the field be if the 10 nc charge is replaced by a 20 nc charge? assume the system is big enough to consider the charges as small test charges.