09/17/20

Can anybody help me with this question?
1. An electric circuit contains a resistance R and a capacitor C in series, and abattery supplying a time-varying electromotive force V(t). The charge q onthe capacitor therefore obeys the... more
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09/16/20

How do I find average velocity without being given distance or time?
The problem for my homework is: "A car travels up a hill at a constant speed of 44 km/h and returns down the hill at a constant speed of 67 km/h. Calculate the average speed for the round trip".
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09/05/20

Two particles with charges +6e and -6e are initially very far apart (effectively an infinite distance apart). They are then fixed at positions that are 6.52 x 10-12 m apart.

Two particles with charges +6e and -6e are initially very far apart (effectively an infinite distance apart). They are then fixed at positions that are 6.52 x 10-12 m apart. What is EPEfinal -... more
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09/05/20

a certain force increase the length of wire by 1mm. which force is required to increase the length by 2mm??
its physics question plz Ans quickly its urgent...options....A 2f B 16f C 4f
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09/03/20

Integrating something that already has a dx in it
What would integrating both sides of x*(dT/dx)=C in terms of x look like?I keep getting that T(x)=C, but i don't think that's right. boundary conditions: 𝑇(𝑥1 ) = 𝑇1 and 𝑇(𝑥2 ) = 𝑇2 Thank you
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08/31/20

Find the coordinates of the point 7/10 of the way from A(-4,-5) to B(12,7)
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08/27/20

If a 5.01 M aqueous solution of sodium hydroxide (NaOH, 40.00 g/mol) has a density of 1.21 g/mL, what is the mole fraction of sodium hydroxide?

{hint: assume 1 L of solution} Enter your value using three significant figures.
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08/25/20

Vibrations question
Suppressive vibrations (oscillations) happen so that the amplitude of the third vibration is 11,02 times greater than the amplitude of the sixth vibration. The frequency of the vibrations is 0,5... more
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08/23/20

i need help with this chemistry isu question, please help, would be greatly appreciated!!
An organic compound used in the production of sweet-smelling perfumes was isolated and examined. It was found to contain the composition of 54.52 % carbon, 9.17% hydrogen, and the remaining... more
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08/22/20

What’s the greatest value of k for which you should use four posts rather than three?
Quarantined in your apartment, you decide to entertain yourself by building a large pen for your pet hamster. To create the pen, you have several vertical posts, around which you will wrap a sheet... more
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08/08/20

Hard physics electricity problem
I apologize for my poor English.12 resistors, each with resistance R, are connected into a cube-shaped framework, which has one resistor on each side.How to create scheme of equivalent circuit if... more
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08/04/20

need a little help
Two straight roads diverge at an angle of 40°. Two cars leave the intersection at 2:00 P.M., one traveling at 38 mi/h and the other at 60 mi/h. How far apart are the cars at 2:30 P.M.? (Round your... more
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07/30/20

Consider the function f ( x ) whose second derivative is f ' ' ( x ) = 2 x + 2 sin ( x ) . If f ( 0 ) = 3 and f ' ( 0 ) = 3 , what is f ( 3 ) ?

Consider the function f(x) whose second derivative is f''(x)=2x+2sin(x). If f(0)=3 and f'(0)=3, what is f(3)? this is my... more
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07/28/20

Arc length with parametric curves
Find the exact length of the curve x= 2+12t^2y= 8+8t^30≤ t≤ 2
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07/25/20

all of these points
A quiet whisper is measured at 30 dB and a loud shout at 110 dB. (Aear canal = 1.54×10−4 m2, Zair = 413 kgm−2 s−1)(a) What power, in watts, is delivered to the opening of the ear canal during the... more
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07/24/20

How to calculate pH of buffer solutions?
Calculate the pH of the following two buffer solutions: (a) 2.0 M CH3COONa/1.8 M CH3COOH. (b) 0.2 M CH3COONa/0.2 M CH3COOH. 
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07/24/20

Power series: Find the radius of convergence R of the series
n=1 8^n(x+6)^n / sq root (n)R=find their interval of convergence I of the series. (Use interval notation)I=
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07/23/20

Find an equation of the form y=c+blogax whose graph contains the points (4,10) and (2,12)
I'm completely stuck on this question. It's on our exam review worksheet and all they give us is the correct answer. They don't show how to solve this. I am able to do the y=ca^x problems just fine... more
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07/22/20

electromagnetism
A 4uC linear charge is distributed in a square of side 0.7m, which is contained in the 'yz' plane and has its center at the origin. The 'x' axis passes through the center of the square. Find the... more
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07/19/20

can someone please give the definition for i= √-1?
aka i2=-1. i know i is an imaginary number, and if the number inside the square root is negative then the result is an imaginary number.
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07/14/20

Find the equation of the plane through the center of...
Let Line L be the line of intersection of the planes x-2y+z=0 and 3x+y-2z=9.Find the equation of the plane through the center of the sphere x2 -8x+y2-2y+z2=8 and perpendicular to line L.
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07/13/20

I need help with this old physics problem I got wrong?
At a distance of 12m from a sound source the sound intensity is found to be 0.1W/m^2. What is the sound intensity at a distance 36m from the source?A. 0.011 W/m^2B. 0.1 W/m^2C. 0.3 W/m^2D. 0.033... more
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07/11/20

Use the following information to find the distance between Point A and Point B.

Use the following information to find the distance between Point A and Point B. Point A is the center of the sphere x2 + 4x + y2 + z2 − 2z = 0. Point B lies in the middle of the line segment... more
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07/06/20

Find the radius of convergence and interval of convergence of the following series.
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07/06/20

Find the radius of convergence and interval of convergence of the following series.
Find the radius of convergence and interval of convergence of the following series.
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