A) jakä… dĺ‚ugoĺ›ä‡ powinien mieä‡ mieä‡ bok kwadratu , aby pole tego kwadratu byĺ‚o răłwne polu prostokä…tu o wymiarach 3cm x 4cm ? wynik podaj z dokĺ‚adnoĺ›ciä… do 1mm. b) jakä… dĺ‚ugoĺ›ä‡ ma krawä™dĺş szeĺ›cianu , ktăłrego ma objä™toĺ›ä‡ jest răłwna objä™toĺ›ci prostopadĺ‚oĺ›cianu o wymiarach 2cm x 4cm x 5 cm ? wynik podaj z dokĺ‚adnoĺ›ciä… do 1mm.

Along the line connecting the two charges, at what distance from the charge q1 is the total electric field from the two charges zero? express your answer in terms of some or all of the variables s, q1, q2 and k =14ï€ïµ0. if your answer is difficult to enter, consider simplifying it, as it can be made relatively simple with some work.

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.

If a rock is thrown upward on the planet mars with a velocity of 12 m/s, its height (in meters) after t seconds is given by h = 12t − 1.86t2. (a) find the velocity of the rock after two seconds. m/s (b) find the velocity of the rock when t = a. 12−3.72a m/s (c) when will the rock hit the surface? (round your answer to one decimal place.) t = s (d) with what velocity will the rock hit the surface? m/s