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# elephanto -_-

Questions14
• ### Physics help!!!!?

https://www.flipitphysics.com/Content/smartPhysics...

As shown above, two beams of laser light are shown onto two different pieces of plastic. The two beams both have a wavelength of λ = 630 nm and start out in phase 2.5 m to the left of the plastic pieces. The top piece, #1, has an index of refraction of 1.26 and a thickness of 3.2 μm. The bottom piece, #2, has an index of refraction of 1.44 and a thickness of 2.8 μm. The beams continue on and shine on a wall 2.2 m to the right.

Expressed in terms of wavelengths, what is their phase difference when they both have emerged from the plastic?

• ### Physics Problem!!!????

In a region of space, the electric field varies according to E = (0.08 N/C) sin(1900t), where t is in seconds. Find the maximum displacement current through a 1 m^2 area perpendicular to E.

• ### How do I find maximum displacement current?

In a region of space, the electric field varies according to E = (0.08 N/C) sin(1900t), where t is in seconds.

Find the maximum displacement current through a 1 m^2 area perpendicular to E.

Physics9 months ago
• ### Math help!!!?

Let Line 1:

x = 2-2t, y = 4t, z = 1-t

and Line 2:

x = s, y = 3 -3s, z = 1

a) Verify that the lines are skew lines. (i.e., show that they do not intersect and are not parallel).

b) Find the equations of the parallel planes through each line.

I understand part a, i need help with part b

• ### Chemistry help enthalpy?

C (s) + 2 H2O (g) ---> CO2 (g) + 2 H2 (g)

Estimate Delta Hrxn using bond enthalpy

• ### Chemistry Bond Enthalpy?

C (s) + 2 H2O (g) ---> CO2 (g) + 2 H2 (g)

Estimate Delta H using bond enthalpies

• ### Chemistry Help!!!!!!!!!!!?

2 NH4NO3 (s) -----> 2 N2 (g) + 4 H2O (g) + O2 (g)

how many liters of gases would be formed at 450 C and 1.25 atm pressure by explosion of 45.0 g of NH4NO3?

• ### Chemistry help!!!!!!!!?

How many ml of NH3 will be produced by the reaction of 25 ml of N2 gas with 75 ml of H2 gas to form NH3 via the given equation if pressure and temperature are kept constant:

N2(g) + 3 H2(g) --> 2 NH3 (g)

• ### Physics Help Gravitation.?

A 170 kg rocket is moving radially outward from the earth at an altitude of 190 km above the surface with a velocity of 3.5 km/sec. At this point, its final stage engine shuts off.

1) Ignoring any minor air resistance, what is the rocket's velocity 790 km above the surface of the earth?

____ m/sec

2) Again ignoring any minor air resistance, what is the rocket's velocity 790 km above the surface of the earth if its mass were 340 kg?

_______m/sec

3) What is the maximum height of the rocket above the earth's surface (using the initial rocket mass of \$