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1. ### Physics: Springs: A block of mass 1.4 kg is attached to a horizontal spring that has a force constant 1100 N/m as shown in the figure...?

...½mv² = 0.22 - ½kx² - 4.2*(0.020 - x) differentiate w/r/t x ½m * 2v * dv/dx = -kx + 4.2 we want the point where dv/dx = 0...

1 Answers · Science & Mathematics · 18/10/2019

2. ### thermodynamics?

... have n and ΔE. For a diatomic gas, Cv = (5/2)R and R = 8.314 J/mol·K So you can compute the temperature...

1 Answers · Science & Mathematics · 24/09/2019

current flows through, not across first get total R 20 parallel with 35 = 20•35/55 = 12.73 in series with 15 that is 27.73 ...

2 Answers · Science & Mathematics · 19/09/2019

4. ### Find the voltage drop between A and B in the circuit help please thank you so much?

The resistance between A and B is 1/R = 1/30 + 1/40. That should be all the hint you need.

2 Answers · Science & Mathematics · 18/09/2019

5. ### help with this EMF question.?

I = (E1-E2)/(r1+r2+R) = (2-1)/(0.1+0.2+2.7) = 1/3 A V1 = E1-r1*I = 2-0.1/3 = 1.967 V V2 = E2-r2*I = 1-0.2/3 = 0.933 V

1 Answers · Science & Mathematics · 18/09/2019

6. ### We have three isolated spherical shells on which we put positive charges. For each shell, this next figure shows?

.... The potential is constant within the shell -- that is, for r < R_shell. Shell 1 has the largest...

1 Answers · Science & Mathematics · 18/09/2019

7. ### Physics Help Plx (plz provide answer and not formula) THX!!!!?

we must use r^2 v= constant. r is the radius and v is the velocity. first condition...4*4=1. This remains a constant. In the second segment r=1. velocity =1 m/s. In the third segment (1/4)^2 v=1. v=16 m/s...

3 Answers · Science & Mathematics · 15/09/2019

8. ### At what distance from a 1.00*10^-5 C charge will the electric potential be 10000 V?

V = kq/r so r = kq/V = 8.98755179e9 * 1e-5/1e4 = 8.98755179e9 * 1e-5/1e4 = = 8.98755179e9...

3 Answers · Science & Mathematics · 15/09/2019

9. ### Physics: Vectors, velocity.?

2. The angle is given w/r/t horizontal, so Ax = A*cos45.0º Ay = A*sin45....

1 Answers · Science & Mathematics · 15/09/2019

10. ### A 2.55 x 10^-4 C charge has an electric potential energy. Of 35.7?

... energy between two charges, in Joules U = kQ₁Q₂/r Q₁ and Q₂ are the charges in coulombs...

1 Answers · Science & Mathematics · 14/09/2019