# Yahoo Web Search

1. Sort by

1. ### what is the maximum speed a single ion (m= 3.82×10^-26 kg) can reach when it experiences the –0.07 V (resting) potential difference?

By work energy relation: =>W = ∆KE =>qV = 1/2mv^2 =>1.6 x 10^-19 x 0.07 = 1/2 x 9.1 x 10^-31 x v^2 =>v = √[2.46 x 10^10] =>v = 1.57 x 10^5 m/s

1 Answers · Science & Mathematics · 01/06/2020

2. ### A 2.2k resistor is rated at '1/2 W'. What is the highest voltage you could apply to the resistor without damage to it from overheating?

... = volts^2 / ohms In this problem, you have 0.5 W = V^2 / 2200. ============= The original question clearly had 2.2k.  "k"...

5 Answers · Science & Mathematics · 04/06/2020

3. ### A monarch butterfly is on the floor of a closed elevator. The monarch butterfly is always in contact with the floor of the elevator. ?

As v = constant, =>a = 0 Thus by N = mg =>5.14 = m x 9.8 =>m = 0.524 kg OR 524 gm

1 Answers · Science & Mathematics · 04/06/2020

4. ### Quick Chemistry Question?

... would be: Cu2+ + 2 e- --> Cu(s) Eo = 0.52 V Pb2+ + 2 e- --> Pb(s) Eo = -0.13 V So, by...

1 Answers · Science & Mathematics · 31/05/2020