Friday

April 18, 2014

April 18, 2014

Total # Posts: 50

**physics**

Two long, parallel wires carry current in the x-y plane. One wire carries 30 A to the left along the x-axis. The other carries 50 A to the right along a parallel line at y = 0.28 m. At what y-axis position in meters is the magnetic field equal to zero?

**physics**

Consider an aluminum wire with 1 mm diameter below its critical temperature of 1.2 Kelvin. It's critical magnetic field is 0.01 Tesla. What is the maximum current in Amps that you can send down this wire for it to remain superconducting?

**electricity**

Two long, parallel wires carry current in the x-y plane. One wire carries 30 A to the left along the x-axis. The other carries 50 A to the right along a parallel line at y = 0.28 m. At what y-axis position in meters is the magnetic field equal to zero?

**math**

3x3=9 12x12=144

**math**

3x3=9

**ENG1511**

Education open many doors for the majority,

**5th grade math**

tulips are planted every four feet in a rectangular garden the sides are 16 feet and 12 feet how many tulips are there?

**math**

tulips are planted every four feet on a rectangle the sides are 16 feet and 12 feet how many tulips are there?

**7th grade science help Ms.Sue please help**

Connection academy Cheater;)

**Math-unit rates**

20 mi in 5 h

**chemistry**

1.10 is allowed to react with 9.57 , producing 2.50 . What is the theoretical yield for this reaction under the given conditions?

**CHEMISTRY**

If 6.50 g of the unknown compound contained 0.217 mol of C and 0.433 of H, how many moles of oxygen,O, were in the sample?

**College Physics**

An electric dipole consists of 2.0 g spheres charged to 5.0 nC (positive and negative) at the ends of a 12 cm long massless rod. The dipole rotates on a frictionless pivot at its center. The dipole is held perpendicular to a uniform electric field with field strength 1400V, th...

**math**

All you need is the volume of a cylinder which is pi*r^2*height so 60436.36in^3=261.93Gallons

**College Physics**

A parallel plate capacitor is made of two 3.5 cm x 3.5 cm square plates that are separated by 1.6 x10 -5 m. The plates are charged to 4.8 nC each (positive and negative). An electron is released from rest at the surface of the negative plate and simultaneously a proton is rele...

**Physics!**

Two metal spheres with masses 4.0 g and 6.0 g are tied together with 6.0 cm long massless string and are at rest on a frictionless surface. Each sphere is charged to + 5.0 nC. a. What is the energy in the system? b. What is the tension in the string? c. The string is cut. What...

**Physics!**

Two metal spheres with masses 4.0 g and 6.0 g are tied together with 6.0 cm long massless string and are at rest on a frictionless surface. Each sphere is charged to + 5.0 nC. a. What is the energy in the system? b. What is the tension in the string? c. The string is cut. What...

**Physics!**

An electron orbits a 3.0 cm diameter metal ball 5.0 mm above the surface. The orbital period of the electron is l2.0 micro seconds. What is the charge on the metal ball? I think I use E=kq/r*R but im unsure! Please help! Thanks

**Physics**

Two metal spheres with masses 4.0 g and 6.0 g are tied together with 6.0 cm long massless string and are at rest on a frictionless surface. Each sphere is charged to + 5.0 nC. a. What is the energy in the system? b. What is the tension in the string? c. The string is cut. What...

**Chemistry**

Use Equation 7.1 and assuming that core electrons contribute 1.00 and valence electrons contribute nothing to the screening constant,S , calculate Zeff for these two ions. Repeat this calculation using Slater's rules to estimate the screening constant, S.

**Chemistry**

How many grams of methane must be combusted to heat 1.05 of water from 24.0 to 89.0, assuming as a product and 100% efficiency in heat transfer?

**chemistry**

How many grams of methane must be combusted to heat 1.05 of water from 24.0 to 89.0, assuming as a product and 100% efficiency in heat transfer?

**Math**

How do I illistrate Aunt May hides 10,000 dollars in $20 dollar bills under her mattress. If she spends $20 dollars every day, how many days will it take her to run out of money? Do I really need to draw 500 $20 dollar bills?

**english**

"I hear that Anne is just a silly little goat who doesnt know anything at all and imagines that shes learned a wonderful lot from books" This is found on page 46 and I think she wrote this section because she gets tired of people telling her she is too young and is j...

**english**

Alright, I am also reading Anne Frank, but I'm having trouble with the question about how Anne used humor to relieve the anxiety and boredom of living in the hiding?

**Physics-Resonance**

Sorry, but your answer is incorrect. Since the pipe is 3.00 m long and open at one end, the first resonance will occur with a wavelength four times the length of the pipe, or 12 m. Use 343 m/s for the speed of sound at 20°C. Velocity = Wavelength x Frequency Frequency = Ve...

**chemistry**

how many grams of beryllium chloride would you need to add to 125 ml of water to make a .050 molal solution

**physics**

a snowmobile has a mass of 2.5*10^2 kg. A constant force acts upon it for 60 seconds. The snowmobile's inital velocity is 6 m/s and its final velocity is 28 m/s. a) find its change in momentum of the ball. b) what is the magnitude of the force action upon it?

**physics**

a 4 kg model rocket is launched, shooting 50 kg of burned fuel from its exhaust at an average velocity of 625 m/s. What is the velocity of the rocket after the fuel has burned.? Ignore effects of gravity and air resistance.

**math**

i am an even number that has more ones than tens. My thousands digit is the quotient of 9 divided by 3 and my tens digit is the sum of 3 and 3. i have no hundreds. what number am I>

**Physics**

26.9

**space**

It lets scientists know how fast its going, therefore letting them know what time earth will see it.

**algebra**

12x6=9x8

**math**

What is the value of 7n when n is 7,565?

**Health**

That's right and thanks for answering my question.

**Math - 4th grade**

It could be a line because a line segment.

**physics**

Runner A is initially 6.0 mi west of a flagpole and is running with a constant velocity of 4.0 mi/h due east. Runner B is initially 4.0 mi east of the flagpole and is running with a constant velocity of 5.0 mi/h due west. How far are the runners from the flagpole when they meet?

**Math**

Circle O is centered at the origin and has a radius of 5. Circle O' is the image of circle O after a translation of T1,2. What is the center of circle O'? What is the radius of circle O'?

**Math**

What single rotation is equivalent to Rotate 40 degrees circle, Rotate 60 degrees circle, rotate -10 degrees

**calculus**

Use the chain rule d/dx[f(x)^(n)]= (n(f(x))^(n-1))*(f'(x)).

**calculus**

y'=[(1/2)*(arctan(x))^(-1/2)]*(1/(1+x^(2)))

**calculus**

Note that f'(x) can be rewritten algebraically a f'(x)= x -(1/x). Now, take the integral (anti-drivitive) of f'(x) with respect to 'x' to obtain f(x). So, Int(x-(1/x),x)=((x^(2))/2)-ln(abs(x))+C To understand this you must first look at the rules of integra...

**Calculus**

You are almost right but since u=-t^(2) the limits are [0,-25] then put them into e^(u) and you get, e^(-25)-e^(0)= e^(-25)-1 Then divide that answer by 5 thus the answer is, (e^(-25)-1)/5

**calculus**

sqrt(-16)=sqrt(-1)sqrt(16)=i sqrt(16)=4i sqrt(-25)=sqrt(-1)sqrt(25)=i sqrt(25)=5i I think you can see it now. Just remember i=sqrt(-1). And don't forget your properties of sq-roots.

**6th grade**

IDK

**calculus**

Plug in dp/dt =-14 kpa/min because it is decreasing at a rate. So solving for dv/dt= (1-(V^(1/4)dP/dt))/((1/4)PV^(-3/4)). Your answer so be dv/dt= (1-((340)^(1/4)(-14))/((1/4)(87)(340)^(-3/4)).

**Math**

(square root 5) times (square root 12) x > 0, (square root x) times (square root 3x)

**world history**

what impact did the Reformation have on Western society

**8th grade**

I need a fable to copy.

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