Spencer

This page lists questions and answers that were posted by visitors named Spencer.

Questions

The following questions were asked by visitors named Spencer.

how long will it take to earn $787.50 on $5000 at 5 1/4%(percent) what is the rate it is compounded? annually, semi-annually, monthly, what? dat information is not given aren't you supposed to be using the interest rate formula? if so, then u have two var...

Susan collected $1.20 interest after 6 months. What was the amount of her deposit if the bank pays 6% interest? Solve this equation: .06x = $2.40 the answer is 40

I've been working forever to figure out this problem! If two flagpoles are 10m and 70m tall and are 100m apart, find the height of the point where a line from the top of the first to the bottom of the second intersects a line from the bottom of the first...

What article in the constitution does it state Who has the power to settle disputes involving the United States?

A 68.0 g hollow copper cylinder is 90.0 cm long and has an inner diameter of 1.0 cm. The current density along the length of the cylinder is 1.60×10^5(A/m^2). What is the current in the cylinder? Ive tried many ways but am not getting the correct answer.

A slab of metal of volume V is made into a rod of length L. The rod carries current I when the electric field inside is E.Find the resistivity of the metal?

Three electrons form an equilateral triangle 1.00 nm on each side. A proton is at the center of the triangle.What is the potential energy of this group of charges?

A proton and an alpha particle ( q= + 2e, m=4u ) are fired directly toward each other from far away, each with an initial speed of 0.01 c.What is their distance of closest approach, as measured between their centers?

A Geiger counter detects radiation such as alpha particles by using the fact that the radiation ionizes the air along its path. A thin wire lies on the axis of a hollow metal cylinder and is insulated from it. View Figure A large potential difference is e...

An ammeter is connected in series to a battery of voltage V_b and a resistor of unknown resistance R_u The ammeter reads a current I_0. Next, a resistor of unknown resistance R_r is connected in series to the ammeter, and the ammeter's reading drops to I_...

The corroded contacts in a lightbulb socket have 8.20 Omega resistance. How much actual power is dissipated by a 105 W (120 V) lightbulb screwed into this socket?

A battery with EMF 90.0 V has internal resistance R_b = 8.68 Omega. What is the reading V_v of a voltmeter having total resistance R_v = 485 \Omega when it is placed across the terminals of the battery? Express your answer with three significant figures....

using the Amperes Law The circle on the integral means that B(r) must be integrated A. over a circle or a sphere. B. along any closed line that you choose. C. along the path of a closed physical conductor. D.over the surface bounded by the current-carryin...

Which of the following choices of path allow you to use Ampère’s law to find B(r). 1. The path must pass through the point r_vec. 2. The path must have enough symmetry so that B(r)x dl is constant along large parts of it. 3. The path must be a circle. cho...

If a truck that has a back ramp on it is going 70 miles an hour down the road, and you are traveling 75 behind it, you would soon reach it. If you were to try to get up onto its ramp, would you: A: Since you are going 75 miles an hour and it is going 70,...

I need a summary on ch.13,14,15 on "Death on the Ice." by Cassie Brown I would really appreciate your help.

You have a 0.600-m-long copper wire. You want to make an N-turn current loop that generates a 1.30 mT magnetic field at the center when the current is 0.600 A. You must use the entire wire. What will be the diameter of your coil? this doesnt seem that har...

Magnetic resonance imaging needs a magnetic field strength of 1.5 T. The solenoid is 1.8 m long and 75 cm in diameter. It is tightly wound with a single layer of 2.50-mm-diameter superconducting wire. What size current is needed? Thanks in advance

WOW this problem is making me mad. I know force between two wires is mu*I1*I2*L/2pi*d. Ive used this and tried to find the magnitude but it says its wrong. What Am i doing wrong? I made sure to subtract the two forces one going up and one going down. Ther...

Ive tried multiple answers but cant get it right. Which of the following changes would induce an electromotive force (emf) in the loop? When you consider each option, assume that no other changes occur. a. The magnitude of B_vec increases. b. The magnitud...

A 59.0 -turn, 4.10-cm-diameter coil with R = 0.530 {\Omega} surrounds a 1.70-cm-diameter solenoid. The solenoid is 21.0 cm long and has 170 turns. The 60 Hz current through the solenoid is I_sol = (.470A)*sin(2*pi*f*t). I guess f is the frequency. Find th...

please look at my earlier question below thank you

Shrinking Loop. A circular loop of flexible iron wire has an initial circumference of 167 cm, but its circumference is decreasing at a constant rate of 10.0 cm/s due to a tangential pull on the wire. The loop is in a constant uniform magnetic field of mag...

what is the dihydrogen phosphate ion? and the answer is not H2PO4-, H2PO4, HPO4... =(

(cotxsec2x - cotx)/ (sinxtanx + cosx) = sinx prove. i keep getting (if i start from the left side) = cosx instead of sinx please help!

okay so in my review packet under the "calculator" section it says law of sines and law of cosines. i don't know what that means. i wikipedia-ed it but i don't understand what they are saying. Please help!

I have to write about the: constitutional, political and practical concerns of the Indian Removal act. i get the constitutional point but i don't understand what a political concern is or what a practical concern is is practical like they were afraid that...

if you have how do u do 2^2x - 2^x - 6 =0 (calc)how do u do it? using logs??

I always get the Hutus and the Tutsis from Rwanda confused. Which was the group favored by the Dutch, and which was the group who initiated the genocide?

Can some one explain to me in baby words what the panic of 1819 was? like it was caused by the united states bank because...how?? like its says stuff about loans and speculators but i don't know what that means! thanks

was the bank war basically just the opposition of jackson towards the bank or was there mor to it? i already checked google.

I Need to write a letter to a girl in spanish for my spanish class. how do i start? how do i say, hi i really like you?

The concentration of H2SO4 in a solution is 3.20 10-6 M. Assume the acid dissociates completely in solution. What is the [H3O+] in the solution? What is the [OH-] in the solution? What is the pH of the solution? What is the pOH of the solution? OK SO I KN...

0.70 M KOH find the pH

0.70 M KOH find the pH

pawn: make a sentence does this work? my dad always said, "dont be a pawn, be your own boss."

Calculate the percent ionization of benzoic acid at the following concentrations: 0.00014 M i got 68% but it says its wrong

0.10 M methylamine (CH3NH2) kb= 4.38e-4 calc the percent ionization so i did the ICE table to find that x=6.26e-3 and then i divided by .1 and then multiplied by 100. but i got the wrong answer whats did i do wrong?

NEWW- 0.10 M methylamine (CH3NH2) kb= 4.38e-4 calc the percent ionization so i did the ICE table to find that x=6.62e-3 (that was a typo the first time) and then i divided by .1 and then multiplied by 100. but i got the wrong answer whats did i do wrong?...

Calculate the concentrations of all species present in a 0.33 M solution of ethylammonium chloride (C2H5NH3Cl). Okay so i tried doing HA = H + A ice table regular it doesnt work idk what Ka to use. b/c of the chloride. i have to find [C2H5NH2][H+][OH -][C...

Determine between which consecutive integers one or more real zeros of f(x)=3x^4+x^3-2x^2+4 are located? A. no real zeros B. 0 and 1 C. -2 and -3 D. -1 and 0 I was thinking it's either A or C? I need lots of help.

what does this mean.... Que son algunas comidas tipicas en latinoamerica?

Compare and contrast the particle arrangement (density) of a solid, liquid and gas?

someone already posted something similar to mine but i think they're in my class and we have way different problems to work on... name if the following involve, seperation in powers, checks and balances, judicial review, federalism, or some combination of...

A football is thrown at 14.0 m/s at an angle of 35.0 degrees. How far away does it land?

golf club with a mass of 250 g travels at 50 meters per second hits a 40 g golf ball and continues traveling at 35 m/s. What is the speed of the golf ball after impact?

Hi I need to know how much ground water presuure would be required to lift a 1.200m diameter plastic tank weighing 650kg out of the ground please, Please supply the answer in Kpa or psi Cheers

If a tank is standing up i.e 1.200 dia x 1.100 high with 650 kg inside, How much water pressure to lift it Cheers

the sides of the triangle are in ratio 2:4:5. If the perimiter of the triangle is 88 meters, determine the legnth of each side.

415V 505V 515V .------------.------------. There are 3 points w/same distance from each other (6x10-3m between each point). What is the magnitude and direction of electric field (E) in the vicinity of the origin (the middle point – 505V) ? Thank you!

which factors would you multiply first to find the product of 2x5x3? Explain your reasoning.

why was the aztec civilization considered warlike???

1) How where the Anasazi able to grow crops in their dry land?

Also, how did the Anasazi create homes that were adapted to their environment?

How were the Pueblo people like the Anasazi???

A horizontal force of 10 N is applied to the outer edge of a door at an angle of 32° to the door, as shown in a view from the top looking down. The width of the door is 0.80 m. The magnitude of the torque of this force on the door with respect to the hing...

Point P is located at the intersection of the unit circle and the terminal side of angle theta in standard position. Find the coordinates of P to the nearest thousandth.

Perform the indicated operation and simplify if possible. Assume any factors you cancel are not zero. s/(s^2-5s-24)-4/(s+3)

would you eat more if you ate 1/3 of a small pizza or 1/3 of a medium pizza

Zak, helping his mother rearrange the furni- ture in their living room, moves a 59 kg sofa 2 . 6 m with a constant force of 36 N. What is the work done by Zak on the sofa?

A driver brings a car traveling at 22m/s to a full stop in 2 seconds. How fast does the car uniformly decelerate?

Student budgeted a $25 a month for phone service. If the telephone company charges $18 a month for basic service and $.05 a minute for each long distance call, how many minutes can be spent on long distance calls each month?

Ann, Sam and you take a trip to the orbiting International Space Station, bringing along a hula hoop that is 1.02 m in diameter (= 2R) and has a mass Mh = 2.0 kg. You are watching from a viewport while Sam and Ann go outside for a (space) walk. You see bo...

The teacher of a mathematics class has written up the final exam, but wants the questions to be random for each student. There are 28 students in the class, and the test has 100 questions. Each question has four possible answers. a. After reading carefull...

Standard form for both equation with steps 16x^2-96x+144+25y^2=400 16x^2+192x+576+25y^2=1600

At a school with 100 students, 35 take French, 32 take German, and 30 take Spanish. Twenty students take only French, 20 take only German, and 14 take only Spanish. In addition, 7 students are taking both French and German, some of whom also take Spanish....

A fireman used a ladder with 56 rungs. The rungs are 14 inches apart and 1.5 inches thick. What is the distance from the bottom of the lowest rung to the top of the highest rung? Check if I solved correctly please. I multiplied 55*14 because there would b...

105 students were asked if they liked soccer, rugby, or football. 4 liked only rugby, 40 liked rugby, 12 liked only rugby and football, 63 did not like football, 21 didn't like any, 16 liked only soccer and football, 60 liked soccer. How many liked only f...

A spotlight on the ground is shining on a wall 24\text{m} away. If a woman 2\text{m} tall walks from the spotlight toward the building at a speed of 0.6\text{m/s}, how fast is the length of her shadow on the building decreasing when she is 2\text{m} from...

As an eager scientist on a hot summer day you wish to determine how much ice to buy to add to your cooler which is filled with 4.0 × 101 cans of soda which are warm at 82.9°F. Each can has a mass of 378 g and ideally you want the temperature of the drinks...

If a 300g sample of a substance has a half-life of 5 days, how much of the substance will decay after 22 days? A)293.4 g B)290.6 g C)285.8 g D)299.9 g

Examine the redox reaction. As2O3(s) + Cl2(g) + H2O(l) → H3AsO4(aq) + HCl(aq) How many electrons are lost by each As atom during the reaction? A)4 B)3 C)2 D)1

A solubility graph showing the solubility in grams of substance X in 100.0 g of alcohol. At 20 degrees Celsius, 24.0 grams of substance X will dissolve. At 50 degrees, 60.0 grams will dissolve. A saturated solution of X (s) in alcohol is cooled down from...

I have a question on my math homework. The question is "half the perimeter of a garden is 18 feet. The garden is 8 feet longer than it is wide. How wide is the garden." How do i figure this put. urgent

A bug is 12 cm from the center of a turntable that is rotating with a frequency of 45 rev/min. What minimum coefficient of friction is required so that the bug stays on the turntable?

Dr. Pepper left Oakville at 9:00 AM and drove to Central City at 60 km/h. H. Salt left Oakville at 11:00 AM and traveled the same route to Central City. If both men arrived at Central City by 4:00 PM at what rate did H Salt travel. We have to set the ques...

What were the two groups that emerged after the constitutional convention? What did each group want?

One cubic centimetre of aluminum weigh 2.70g. What is the weight in grams of a rectangular block of aluminum 50cm long,7.5cm broad and 12cm high

Mrs.Partsch saw an iPod for sale. The price tag said the iPod cost $128, but a sign announced that it was on sale for "35% off." How much would the iPod cost after the discount?

Analyze Informational Text Unit Test Use the claims about banning plastic bags to complete the activity. Claim 1 What do you think about when you toss a plastic bag into the garbage? If you’re like most people, then you probably do not think about much at...

Analyze Informational Text Unit Test Use the article to complete the activity. Vote No on the Highway 85 Extension by Victoria Vail, Tribune staff writer Next week, the city council will consider a proposal to extend Highway 85 by 10 miles. A small coalit...

Design a transmission line that can transmit 300 MW of electricity across 200 km with only a 29% loss. Assume the wires are to be made of aluminum with 2.82×10-8 .m of resistivity and the transmission voltage is 600 kV. (

How to round to the nearest tenth 6 12 a=__

unit 2 lesson 10 lesson box and whiskers I need help with the answers for 1-6

Answers

The following answers were posted by visitors named Spencer.

There is no inner or outer im guessing it is assumed to be negligibly thick

Nvm Thank you for the insight into the density. I got the anwser now and your right the radius has nothing to do with it.

NVM again sorry I solved it.

The rod is now stretched so that its length is doubled. If the electric field remains the same, what is the new current I' in the rod? The answer to the first part was (EV)/(IL)

Thank you phew I got it done on time

a. Since W=mass x acceleration , when accelerating upward the acceleration due to gravity and the acceleration of the elevator add up. So, a=(9.8+1.7)=11.5m/s^2, so weight = 97kg x 11.5 m/s^2. b. at constant speed their is no acceleration except for earth...

but i think when hey are closest their velocities are not zero since their masses are different. i tried using conservation of momentum also.

thanks i normally look at that site but I wasn't thinking capacitors

wow your right i feel stupid. i thought the other resistor added was different. now it makes sense thanks.

very interesting i get it. Thanks drwls

oops theres a D too. D. over the surface bounded by the current-carrying wire.

I know its this stupid Mastering Physics site. It can word things that straightforward.

no its a website. and that last choice doesnt make sense cause it asks which allows and that sats it must be...so is that one right? and the r_vec is is some point in the field.

thanks i guess i need to read up on the turns in coils.

nevermind i got it im just stupid with a calculator i guess.

to find N is it L/2d? length being length of solenoid and d is diameter of the wire or solenoid?

i did. so length of solenoid is 1.8m. diameter of wire is 2.5e-3 m. so N=1.8/pi(2.5e-3) I=BL/mu*N shouldnt that be right? with L being 1.8.

ok i got it finally. thanks

got it thank you

the image is a square loop on the xy plane with the B field directed into the page. that should help. Im pretty sure moving it right wont do anything because same number of field lines passing. Im not sure if changing the magnitude does anything.

thats what i thought. so i thought it would be abc. but then wouldnt moving it in the direction of the b field cause more lines to pass in less time? Ive tried abcdf, abcf,abc,c, none of those work.

ok for dB/Dt I get .18025cos(2pift). for induced emf its Area*dB/dt*N(turns). ive tried it with a problem I know and it works fine. at the end do i just plug in the given t into the equation. Please could you work it out i think its calculation but i cant...

please help by 9am.

nvm found it elsewhere. turns out i had my calc in degrees instead of radians. don't you just hate when that happens.

it all looks right and what i did also. yet it seems like the answer should be larger because whenever i input it into the program it seems like its too small because it says the flux should occur since the area is changing. It seems to be taking it as ze...

nvm dangit it works. just off by a small amount.

i'm a junior in high shcool. my reivew packet refers to my midterm review packet.

okay i didn't get 48.8 i got 68...

no because i keep getting .01359 for C2H4NH3^+ but obviously that's wrong i did x^2/.33-x=5.6e-4

i did quadratic and got .02922 and that's not the right answer for the H+ question...

I don't understand why u did the Ka=Kw/Kb why cant u just use Kb? isnt it a base?

but i cant get the answer... that's why i need help

Hi Drwls If the tank is standing up i.e 1.200 dia x 1.100 high with 650 kg inside, would the water pressure to lift it be the same Cheers

can someone please help me???

geeeee thanks. It took you two dingbats THAT long!!!!! scoff!!!!! Just kidding thank you

I need help with my history homework.

No links please.

who is ANA and ARIA???

I have never heard of them before!!!!

what does <g> mean?

And I used to keep the same posts before and then I think you recognized me each time since you never answered my questions. so i always used different names.

And, ok i will keep the same names for each post from now on. But how can you know that I am using the same computer!!!!???? That is kind of scary!!!!

see, i used the same name and now no one will answer

so HOW exactly are they alike???

And I am sorry ms.sue. I didn't treat you very nice. :(

so how are they alike???

I did and i don't see how they are alike

13 is R (MLK Jr.)

13 is R (MLK Jr.) Does anyone know who said, "I'll make a centerpiece out if it."????????

my neighbors across the street have a new car; it's a toyota

You didn't do your work you put in a time how am I suppose to see it is correct without work to prove it. You go to math to learn proofs so use the skill if you are going to publish things. Don't be lazy

so bobpursley for question two is that the answer

100*(25- distance from fulcrum) + 20*(40- distance from fulcrum)= 500(x- distance from fulcrum) 3300=500x Solve for x. then add to 50 because it's in the opposite side of the fulcrum. At the 50.66 cm mark the 500g mass should be placed

use acceleration of gravitation=gravitational constant*mass/(r^2) use the radius and density to find the mass of the large mountain. Find the distance from the center of the sphere (mountain) to the plumb. Find the acceleration due to gravity in the x hor...

Leah is correct, alexis is wrong.

I can tell you that the one above me, UnKnown, is 100% correct. I swear on my life.

How far will 490 j raise a block weighing 7 n

Pretty sure 32/8=4, so it would be log 4

That makes sense now that you've explained it!! Thanks!! :D

Im not sure how to solve the question

How does that help solve the problem?

When I plugged in those numbers it ends up with 300/N=(0.693)(22) which gets me about 19.677. Then 300-19.677 gets me 280.323 and thats not an available answer.

Im not sure what youre trying to say here. Im sorry.

Use Henry's Equation, however make your answer negative since gravity is -9.8m/s^2