Aptitude Test Problems in Physics Science for Everyone by S Krotov ( PDFDrive.com )

Solutions 257 Analyzing the motion of the second ball, we neglect the influence of the first released ball. Then q 2 1 1 1 2 4ne ...

258 Aptitude Test Problems in Physics 3.19. From the equality of the electric and elastic forces acting on the free ball, q2 = k ...

Solutions 259 determine the motion of the centre of mass of the system. Since the masses of the balls are equal, the initial pos ...

Fig. 211 260 Aptitude Test Problems in Physics 3.23. After adding two conductors, the circuit will acquire the form shown in Fig ...

Solut ions (^261) CD: RAB = R/2, where R is the resistance of an edge. Therefore, 2U R ' where U is the applied voltage. The tot ...

262 Aptitude Test Problems in Physics R 3 7 R Ac(D)B , T – =-- — 8 - R R(718)R 7 R Thus, the current I in the leads can be deter ...

Solutions (^263) and for the junction D Is+Is =1 4 + Ib will automatically be observed for the junctions E and F (this is due to ...

(^264) Aptitude Test Problems in Physics Considering that the resistance RAB of the circuit satisfies the equation RAB = (11(1 1 ...

Solutions 265 Solving this equation, we obtain R AB=Rx R (117 — 1) ap —1) -" (^3) — • 3 3.28. It follows from symmetry considera ...

266 Aptitude Test Problems in Physics The voltage across the load will be R 2 = - 5 - U. If the resistance of the load becomes e ...

Solutions (^287) By hypothesis, the current required for melting the first wire must exceed 10 A. Therefore, k • 441 (Tmeit — Ta ...

268 Aptitude Test Problems in Physics Obviously, if W2-FW1 R-Fri > R-Fri-Fr^2 ' he answer will be affirmative. Thus, if the i ...

Solutions (^269) It can easily be verified that Consequently, NN 3 Ar 4 Ar1 =40 W. 3.35. At the first moment after the connectio ...

(^270) Aptitude Test Problems in Physics When the key is switched to position .1, the charge on the capacitor will change during ...

Solutions (^271) The voltages U and U (^3) across the capacitors can be calculated from the formulas U1— R2C2 Cl (r R 2 ) (CI+ C ...

(^272) Aptitude Test Problems in Physics of the new equilibrium position be —x 1. In this case, the charge on the capacitor is q ...

Fig. 220 Solutions 273 5-6 as shown in Fig. 219. Then it follows from sym- metry considerations that there is no current through ...

274 Aptitude Test Problems in Physics Therefore, the required ratio is. Qi2 i/2+ 3)2,_ + 6 Q34 3.41. Since the anode current is ...

Solutions 275 across the capacitor does not change. Hence current does not flow, and UcD is zero. Finally, during the time inter ...

276 Aptitude Test Problems in Physics The voltage across each of the resistors RI and R, can be determined from the formula gRin ...