Visible light travels at a speed 3.0 × 108 of m/s. if red light has a wavelength of 6.5 × 10–7 m, what the frequency of this light? a) 2.2 × 10–15 hz b) 2.0 × 102 hz c) 3.0 × 108 hz d) 4.6 × 1014 hz

An open cart is moving along a straight frictionless horizontal track. when rain starts falling vertically into the cart, what happens to the speed of the cart?

Two charged particles, q1 and q2, are located on the x-axis, with q1 at the origin and q2 initially at x1 = 12.2 mm. in this configuration, q1 exerts a repulsive force of 2.62 µn on q2. particle q2 is then moved to x2 = 18.0 mm. what is the force (magnitude and direction) that q2 exerts on q1 at this new location? (give the magnitude in µn.)

The velocity of a car traveling in a straight line increases from 0 meters/second to 30meters/second in 8 seconds. what is the average acceleration of the car?