Both kinematics and conse

**r**vation of ene**r**gy lead to an impact speed of v = √(2gh) = √(2g*2**r**) = √(2*9.8m/s²*2*0.1300m) = 2.257 m/s conse**r**ve momentum: 8.70kg * 2.257m/s = 8.70kg * -0.4332 * 2.257m/s + 13.200kg*V whe**r**e V is the speed of the block afte**r**the collision. V = 0.8433 m/s Hope this...1 Answe

**r**s · Science & Mathematics · 09/11/2020...2*1.2m = 149 m²/s² → v = 12 m/s b) T = m*(v²/

**r**± g) at bottom, T = 1.3kg * (14²/1.2 + 9.8)m/s² = 225 ...2 Answe

**r**s · Science & Mathematics · 18/11/2020...210

**r**ad = -2.65**r**ad = -152º using the usual convention magnitude v = ω**r**= 42**r**ad/s * 47m = 1974 m/s (units of "mete**r**s" assumed...2 Answe

**r**s · Science & Mathematics · 05/11/2020...force of tension acts tangent to the pulley and thus the angle between T and

**R**is 90 degrees and the sin(90) is one. =>T x 0.8...1 Answe

**r**s · Science & Mathematics · 05/11/2020...2 = 40 voltsthat means V2 = 180–40 = 140 voltsVoltage ac

**r**oss R is 300–140 = 160 vcu**r****r**ent th**r**u R4 = 140/30 = 4.667 amps cu**r****r**ent...1 Answe

**r**s · Science & Mathematics · 06/11/2020...same, then a³ = (4π/3)

**r**³ whe**r**e a is the cube side length and**r**is the sphe**r**e's**r**adius a = 1.612**r**a**r**ea of the sphe**r**e is 4π...1 Answe

**r**s · Science & Mathematics · 03/11/2020log 9.3 is 0.91907809237607390383276035202726 log 10.5 is 1.0211892990699380727935052671233 Take the difference

2 Answe

**r**s · Science & Mathematics · 03/11/2020No. I expect that table has (or should have)

**R**/10^3. It means that the**R**value, divided by 1000 ohms, is 9.4. Therefore,**R**= 9400 ohms.1 Answe

**r**s · Science & Mathematics · 03/11/2020mg tanθ = mv²/

**r**v²=**r**/m * mg tanθ, but mass cancels v = √(**r**g tanθ) v = √140*9.80665 * 0.3249 = 21.1m/s ((76.0 kph)) You**r**answe**r**is co**r****r**ect except fo**r**missing units.2 Answe

**r**s · Science & Mathematics · 31/10/2020...h = 8.358 x10^6 m G

**r**avitational potential ene**r**gy U = GMm/**r**--> set**r**= a, m = 109 kg and M = 5.972 x 10^24 kg U = 5.195x10...1 Answe

**r**s · Science & Mathematics · 31/10/2020