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1. A spring with k =130.0 N/ m on surface is mounted to a vertical wall . A 5.00-kg box on the surface is placed in front of the spring. The coef?

...8) + (86)(0.8)] / ½(5) v = 7.1 m /s (b) Balance the forces...5)(9.81) = 19.62 N Fs = k Δx = (130)(0.8) = 24 N 86 - 19.62 - 24 = (5) a a = 8.5 m /s²

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

2. A block with mass m = 12 kg rests on a frictionless table and is accelerated by a spring with spring constant k = 4784 N/ m after being?

...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

3. Physics - Magnetic Fields?

I'll use a slightly different convention: v = (1.2e6, 0.8e6, 0) m /s to show the i, j, and k components and by the same convention B = (0.2, 0, 0.08) T...

2 Answers · Science & Mathematics · 10/07/2020

4. A single mass (m1 = 2.7 kg) hangs from a spring in a motionless elevator. The spring constant is k = 306 N/ m .?

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

5. A mass m = 13 kg rests on a frictionless table and accelerated by a spring with spring constant k = 5032 N/ m . Th?

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

6. pH buffer concentration?

...solution using 0.100 M benzoic acid (p K a = 4.20 ) and 0.160 M sodium benzoate.   pH = pKa  + log...-]/[HA] =  10^-0.20 = 0.631   V = vol. sodium benzoate   100.0- V = vol. benzoic...

1 Answers · Science & Mathematics · 06/02/2020

7. The volume of an ideal gas?

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

8. I need help on a calculus problem. I' m very stumped?

( a ) pi*(16 ft)*(3 ft)^2 = 144 pi ft^3. (b) V = pi*h*r^2 => dV/dt = pi*r^2 dh/dt or in this case 9*pi dh/dt. (c) dV/dt = k *h^(1/2) => k = (-2) / sqrt(16) = -1/2. 9*pi dh/dt = (-1/2)*h^(1/2) => 18*pi...

2 Answers · Science & Mathematics · 11/08/2019

9. A 80 kg trampoline artist jumps vertically upward from the top of a platform with a speed of 5.5 m /s. ( a ) How fast is he going as he lands..?

( a ) easiest is v² = ... * 3.0m = 89 m²/s² v = 9.4 m /s (b) KE + GPE become "spring... I'll assume you meant k = 5.2E4 N/ m ½...

1 Answers · Science & Mathematics · 07/02/2020

10. Two particles of masses m and 4m are moving toward each other along the x-axis with the same speed v .?

... momentum is the same before, during, AND after the collision -- p = (4m - m )* v = 3mv ← #1 Q2/ For an elastic head-on collision, the relative velocity of...

1 Answers · Science & Mathematics · 17/06/2020