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**a**Best Answer from among your results.2 Answers · Science & Mathematics · 07/08/2020

...½mv² = ½ * 12kg * v² v = 9.8 m /s² 3) W = µmgd = 0.44 * 12kg * 9.8m... It's possible you'll have to give that a negative sign. I consider it understood. 4...

1 Answers · Science & Mathematics · 07/08/2020

...by F(net) = F(applied) - F(friction) =>ma = F - μ k x N =>68 x a = 441 - 0.21 x (mg) =>68a = 441 - 0.21 x 68 x 9.8 => a = 4.43 m /s^2 Thus by v = u + at => v = 0 + 4.43 x 4 => v = 17.71 m /s NOTE: As there...

1 Answers · Science & Mathematics · 06/08/2020

... the cross product for

**a**proton (positive charge) experiencing F with direction "-j" and**v**with direction "i" it must be that B has direction "**k**" -- UP. Since**v**and...1 Answers · Science & Mathematics · 29/07/2020

1) Δx = mg / k = 2.7kg * 9.8m/s² / 306N/ m = 0.086 m or 8.6 cm 2) F = mg = 5.4kg * 9.8m...39;s Second, net F = ma = 8.1kg * (9.8 - 1.9) m /s² = 64 N All answers to...

3 Answers · Science & Mathematics · 29/07/2020

...two of them are

**a**closed system (there ...kinetic energy. Let's call**v**the final speed of the 2.0 g object... = EP2 + EK2**k**q^2 / r = 0.5( 4m1 + m2 )**v**^2**v**= 7.746**m**/s or 7.7**m**/s to 2 sig. ...2 Answers · Science & Mathematics · 23/07/2020

...this: U = 2*(1.602*10^-19 C)*

**V**= 9.239*10^-28/sqrt(**a**^2+y^2) J***m**Now, equate the final energy U to the initial energy**K**and solve for y: 9.239*10^-28/sqrt(**a**^2+y^2...1 Answers · Science & Mathematics · 22/07/2020

... when leaving the spring: 4.9 m = v * 0.589 s v = 8.323 m /s Now, use conservation of energy on the ball-spring...final state = 1/2 mv^2 1/2 kx^2 = 1/2 mv^2 => 1/2 k (0.21 m )^2 = 1/2(0.02 kg)(8.323 m /s)^2 0.02205 m ^2...

2 Answers · Science & Mathematics · 22/07/2020

v (rms) = √(3RT/ M ) v² = 3RT/ M M = 3RT/v² M = 3(8.314 J/ K mol)(34 + 273 K )/(214.7)² M = 0.166 kg/mol M = 166 g/mol or 170 g/mol with 2 sig fig

2 Answers · Science & Mathematics · 26/07/2020

1) V = nRT / P = (1.21 mol) × (8.3144626 L kPa/ K mol) × (302 K ) / (101 kPa) = 30.1 L 2) (4/3) × pi x ((2.5 × 10^-10 m ) / 2)^3) = 8.181 × 10^-30 m ^3 = 8.181 × 10...

1 Answers · Science & Mathematics · 19/07/2020