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**r**total cha**r**ge Q, that cha**r**ge enclosed at**r**< R is q = Q*(**r**/ R )³ You...1 Answe

**r**s · Science & Mathematics · 03/02/2021a.

**R**= ρL/A = 1.72e-8Ω·m * 3.00m / π(0.000250m)² = 0.263 Ω b. p.d. = I***R**= 0.400A * 0.263Ω = 0.105 V c. field E = p.d. / ...1 Answe

**r**s · Science & Mathematics · 15/02/2021### Conside

**r**the ci**r**cuit shown in (Figu**r**e 1). Suppose that ΔV = 7.5 V. What is the value of**r**esisto**r**R ?total

**R**= E/I = 7.5/0.1 = 75 Ω**R**= 75 – 10 – 15 = 50 Ω2 Answe

**r**s · Science & Mathematics · 27/01/2021... necessa

**r**y, conve**r**t it to**r**adians pe**r**second. A) v = ω ***r**= ω * 1m B) a_c = ω² ***r**= ω² * 1m C) F_c...2 Answe

**r**s · Science & Mathematics · 28/01/2021... kinetic ene

**r**gy KE**r**= (J/2)*ω^2 moment of ine**r**tia J = 2/5*m***r**^2 (it has a mass dist**r**ibuted homogeneously) ω^2 = V^2/**r**^2...2 Answe

**r**s · Science & Mathematics · 23/02/2021...the

**r**e is f**r**iction sufficient to keep the angula**r**velocity of the ball such that ω = v/**r**Fo**r**a solid sphe**r**e, I = (2/5)mR² and**r**otational KE...2 Answe

**r**s · Science & Mathematics · 11/02/2021...and you want to know the velocity of an object 4 m f

**r**om the cente**r**of**r**otation. v = ω**r**v = 2π(4) = 8π m/s ≈ 25 m/s◄1 Answe

**r**s · Science & Mathematics · 29/01/2021d

**r**op on diode = 0.5 V I1 = 24/(56*2) = 0.214 A I2 = 24/56 = 0.428 A I3 = (24-0.5)/56 = 0.420 A Ib = I1+I2+I3 = 1.06 A (1.1 with jut 2 sign. figu**r**es)2 Answe

**r**s · Science & Mathematics · 23/02/2021Call the sta

**r**ting height h. At the top of the t**r**ack, the block's speed is momenta**r**ily ze**r**o. Thus mgh = mg(2R) --> h = 2R At the end of the t**r**ack the block has total ene**r**gy of E = 1/2mv^2 +mgR and by conse**r**vation of ene**r**gy E...1 Answe

**r**s · Science & Mathematics · 18/02/2021**R**= p.d.² / P = (6V)² / 30W = 1.2 Ω1 Answe

**r**s · Science & Mathematics · 03/02/2021