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1. ### Attach an object A of mass m to the left end of the spring with a spring constant k and an object B of 2m to the right end as shown?

...a 3. 0.5m[ (dx/dt)^2 + 2(dy/dt)^2 ] + 0.5k[y(t) - x(t) - a]^2 = 0.5m(v_0)^2 (v_0)^2 - (dx/dt)^2 - 2(dy/dt)^2 = (k/m)[y(t) - x(t) - a]^2 4. When dx/dt = 0 then dy/dt = v_0 / 2 Plug into energy d_1...

1 Answers · Science & Mathematics · 28/06/2019

2. ### a m=1.50 kg block attached to a massless spring (k=1400N/m). The block is pulled to a position 5.00 cm to the left of its equilibrium?

...1.50) v^2 1/2 's cancel 3.5 = 0.56 + 1.50 v^2 1.50 ^2 = 2.94 v^2 = 1.96 v = 1.4 m/s When you get a good response, please consider giving a best answer. This is...

1 Answers · Science & Mathematics · 17/04/2019

3. ### A mass-spring system oscillates with an amplitude of 5.80 cm. If the spring constant is 275 N/m and the mass is 582 g,?

1) E = 1/2 k A^2 E = 0.5 * 275 * 0.058^2 = 0.46 J 2) v = w A = sqrt(k/m) A v = sqrt(275/0.582) * 0.058 = 1.26 m/s 3) a = w^2 A = (k/m) A a = (275/0.582) * 0.058 = 27.41 m/s^2

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

4. ### At t = 0 a block with mass M = 5 kg moves with a velocity v = 2 m/s at?

...61.2 / 5) ω = 3.50 rad/s x = Acos(ωt + φ) v = -ωΑsin(ωt + φ) 2 = -3.50Αsin(3...find the amplitude -0.33 = Acos(3.5(0) + 1.047) A = -0.660 m Now we find the times when the position...

1 Answers · Science & Mathematics · 29/04/2019

5. ### 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

6. ### physics help!?

... need to accelerate from 0 m/s to 82.1 m/s in a space of 2000 meters a(t) = a v(t) = int(a * dt) = at + C v(0) = 0 v(t... s(0) = 0 s(t) = (1/2) * a * t^2 v(k) = 82.1 s(k) = 2000 82.1 = a * k 2000 = (1/2...

1 Answers · Science & Mathematics · 18/07/2019

7. ### You have a sample of a gaseous compound which has a density of 8.51g/L at 52.0 Celsius and 88.6 k/Pa. What is the molar mass of the gas?

...; solve for M M = mRT/(PV) ... note that density = m/V M = dRT/P M = (8.51g/L)(8.314 L kPa/mole K)(325 K) / (88.6 kPa) M = 259.53 g/mole <&...

4 Answers · Science & Mathematics · 28/07/2019

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. ### A student pushes a baseball of m = 0.19 kg down onto the top of a vertical spring that has its lower end fixed to a table.?

... + GPE as leaves spring 1/2 k x^2 = 1/2 m v^2 + m g h 1/2(630)(0.18^2) = 1/2 (0.19) v^2 + 0.19...5) = 51.95 Vf = 7.2 m/s When you get a good response, please consider giving a best...

1 Answers · Science & Mathematics · 03/07/2019