Select the correct answer.
what can we say about a polarizing filter with vertically aligned chemical molecules?
o a.
it will allow vertically polarized light to pass through it.
b.
it will allow horizontally polarized light to pass through it.
c.
it will block unpolarized light.
d. it will allow all light to pass through it unchanged.
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When an object is heated it contracts. a. true b. false

Suppose a diode consists of a cylindrical cathode with a radius of 6.200×10^−2 cm , mounted coaxially within a cylindrical anode with a radius of 0.5580 cm . the potential difference between the anode and cathode is 260 v . an electron leaves the surface of the cathode with zero initial speed (v initial=0). find its speed vfinal when it strikes the anode.

You've already seen the value of 9.8 in this lesson. what's this value called? what quantity does it represent?