An infrared wave has a wavelength of 6.5 × 10–4 cm. what is this distance in angstroms, å?

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What is the measurement of how fast an object moves relative to a reference point?

An electron moving at 5.06 103 m/s in a 1.23 t magnetic field experiences a magnetic force of 1.40 10-16 n. what angle does the velocity of the electron make with the magnetic field? there are two answers between 0° and 180°. (enter your answers from smallest to largest.)