The total force is the Lorentz force, given by the following. F = qE + qvector v × B = q E + vector v × B We substitute the unit-vector coefficients given above and use the following rules for multiplying unit vectors in a cross product. î × î = ĵ × ĵ = k × k = 0 î × ĵ = −ĵ × î = k ĵ × k = −k × ĵ = î k × î = −î × k = ĵ (a) After substituting and combining the resulting coefficients according to the rules above, we have the following. F = 3.2 × 10−19 C î − ĵ + k N/C = î − ĵ + k × 10−18 N

Aforce of 34n stretches a very light ideal spring 0.73 m from equilibrium, what is the force constant (spring constant) of the spring? (a) 47n/m (b) 38n/m (c) 53n/m (d) 25n/m

Aprojectile is launched from ground level with an initial velocity of v 0 feet per second. neglecting air resistance, its height in feet t seconds after launch is given by s equals negative 16 t squared plus v 0 t. find the time(s) that the projectile will (a) reach a height of 192 ft and (b) return to the ground when v 0equals112 feet per second. (a) find the time(s) that the projectile will reach a height of 192 ft when v 0equals112 feet per second. select the correct choice below and, if necessary, fill in the answer box to complete your choice.

The difference between a red shift and a blue shift has to do with wavelength frequency. t or f