9. Find the instantaneous velocity of the particle described in Figure P2.1 at the following times:
(a)t = 1.0 s, (b)t = 3.0 s, (c)t = 4.5 s, and (d)t = 7.5 s. calculate

Suppose you have three polarizing filters, with the second at an angle of 42∘ to the first and the third at an angle of 90∘ to the first. by what perfect will the original intensity of unpolarized light be reduced to after passing through all three filters?

Select the three ways that the parallel-plate capacitor differs from a car battery.

The first-order reaction a→2b+c has rate constant 0.538 s−1. if the initial concentration of a is 0.867 mol l−1, what is the half-life of the reaction in seconds? remember to use correct significant figures in your answer (round your answer to the nearest hundredth). do not include units in your response.