Amelia

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

Questions

The following questions were asked by visitors named Amelia.

Hi guys, would appreciate some help with this problem: When a light turns green, a car speeds up from rest to 50.0 mi/h with a constant acceleration of 8.80 mi/h·s. In the next bike lane, a cyclist speeds up from rest to 20.0 mi/h with a constant accelera...

Is ice inorganic and why?

I am doing a presentation on Greenland. I decided to dress up like a Greenlandic. I have a coat that would work, but I'd like to have Greenlandic looking boots. I've seen pictures of them before, and I love the way they look. I'd like to buy a pair for bo...

differentiate from first principles y=1/x^2 i get to this then i get stuck f(x+h)-f(x) = 1/(x+h)^2 - 1/x^2 = x^2 - x^2 -2xh -h^2 above divided by(x^2+2xh+h^2)(x^2) = -2xh -h^2/x^4+2x^3h+h^2x^2 then i know i need to divide by h but i cant seem to get to wh...

with amino acid ionisation staes do the r groups/side chains deprotonate first or the nh3+ group im talking about aspartic acid if that's relevant Thank you

How do i use energy coupling to work out how many molecules of ATP dG =-55 kJ/mol needed to make a peptide bond dG = +25 kJ/mol i don't really understand how to go about this do i need atp to activate the amino acids how can i calculate this??

differentiate using product, chain and quotient rule ln x / 5x-7 and e^x / 2x^3 - 1 could you help me out with the first and just point me in the right direction for the first i cant seem to get the steps in the right order and then it gets all muddled th...

Integration By substitution ive been given this equation int x^2(x^3-6)^3 dx using u = x^3 -6 but i don't understand how to do it please help

i keep getting stuck and i think im missing something integrate by parts e^(bx) cos x dx thanks

keep getting stuck for integrate e^(bx) cos x i get = cos x e^bx/b - int -sin x e^bx/b = cos x e^bx/b - -sin x e^bx/b^2 - int - cos x e^bx/b^2 this is where i get stuck please help

The Moon's period of revolution around the Earth is 27.3 d. How far away is the moon?

Can you give me some help with this question im not sure how to even start in a reaction A to P the mass of A at any given time T is Mt and the rate of transformation of A at time T is prportional to Mt given that the original mass of A is 130g and that 5...

A furniture store sells recliners at a 70% mark-up (based on price). If the recliner costs the store $240, what price will they charge?

A furniture store sells recliners at a 70% mark-up (based on price). If the recliner costs the store $240, what price will they charge? Formula: %Markup on cost=%markup on selling price/100% - % markup on selling price x = 70%/100%-70% x = 70%/30% x = 233...

EXTENDING THE LESSON If you add any two rational numbers, the sum is always a rational number. So, the set of rational numbers is closed under addition. Is the set of rational numbers closed under subtraction. multiplication,and division also? Explain.

How does geography affect where people live and work in Canada?

What is the domain of f (x) = sqr root of x^2 - 5x - 14?

I need help with writing a thesis statement for a paper on discrimination in a diverse culture

2/5Q is less than or equal to -18 i am really stuck and i am not surehow to figure it out!

Our debating topic is 'That good news is not news.' I am on the negative team so I am saying that good news is, in fact news. I personally believe the good news really isn't news and so I'm struggling to debate for the negative team. I am the first speake...

A boat moves through the water with two forces acting on it. One is a 5.3 103 N forward push by the motor, and the other is a 0.9 103 N resistive force due to the water. a)) If it starts from rest, how far will it move in 6 s? b) What will its velocity be...

When serving a tennis ball, the player hits it when its velocity is zero (at the highest point of a vertical toss). The racket exerts a force of 560 N on the ball for 5.00 ms, giving it a final velocity of 45.0 m/s. Using these data, find the mass of the...

A projectile is thrown upward with an initial velocity of 272 feet per second. After t seconds, its height h(t)above the ground is given by the function : h(t)=-16t^2+272t. a. Determine the projectile's maximum height. b. Determine how long it takes the p...

Using energy considerations, calculate the average force a 60.0 kg sprinter exerts backward on the track to accelerate from 2.00 to 6.00 m/s in a distance of 25.0 m, if he encounters a headwind that exerts an average force of 30.0 N against him.

During a workout, the football players at State U. ran up the stadium stairs in 61 s. The stairs are 145 m long and inclined at an angle of 30°. If a typical player has a mass of 105 kg, estimate the average power output on the way up. Ignore friction and...

In the 1950s, an experimental train that had a mass of 3.30 104 kg was powered across level track by a jet engine that produced a thrust of 4.90 105 N for a distance of 600 m. (a) Find the work done on the train. 1 J (b) Find the change in kinetic energy....

A steel ball has a mass of 3.8 kg and rolls along a smooth, level surface at 56 m/s. (a) Find its kinetic energy. 1 I got 404.32J bu it doset work (b) At first, the ball was at rest on the surface. A constant force acted on it through a distance of 22 m t...

Mary weighs 450 N and she walks down a flight of stairs to a level 4.50 m below her starting point. What is the change in Mary's potential energy? 1 J whats the PE formula? and setup?

A 17-kg rock is on the edge of a 103-m cliff. (a) What potential energy does the rock possess relative to the base of the cliff? 1 . J (b) The rock falls from the cliff. What is its kinetic energy just before it strikes the ground? 2 . J (c) What speed do...

A steam iron draws 6.5 A when connected to a potential difference of 120 V. (a) What is the power rating of this iron? 1 W (b) How many joules of energy are produced in 20.0 min? 2 J (c) How much does it cost to run the iron for 20.0 min at $0.014/kW·h? $...

Four resistors are connected to a battery with a terminal voltage of 12.0 V, (R1 = 40.0 , R2 = 80.0 , R3 = 140.0 and R4 = 15.0 ) (a) Determine the equivalent resistance for the circuit. 1 (b) Determine the current in the battery. 2 V (c) Determine the cur...

How much charge passes through a cross-sectional area of a copper wire in 0.8 s if I = 3.5 A? 1 C

Calculate the cost of operating a 65 W light bulb continuously for a 30-day month when electrical energy costs $0.23/kW·h. $ 1

The operating potential difference of a light bulb is 120 V. The power rating of the bulb is 105 W. Find the current in the bulb and the bulb's resistance. Current 1 A Resistance 2 I got 0.916 for A and 115 for B but they are wrong

(a) Two microwave frequencies are authorized for use in microwave ovens: 900 and 2560 MHz. Calculate the wavelength of each. 1 cm (frequency = 900 MHz) 2 cm (frequency = 2560 MHz) (b) Which frequency would produce smaller hot spots in foods due to interfe...

Citizen's band (CB) radio utilizes frequencies between commercial AM and FM. What is the frequency of a 11.34 m wavelength CB channel? 1 MHz How do you solve for MHz

Electromagnetic radiation having a 12.0 µm wavelength is classified as infrared radiation. What is its frequency? 1 Hz i got 1.31e+13???

TV-reception antennas for VHF (channels 2 through 13) are constructed with cross wires supported at their centers, as shown in Figure 23.24. The ideal length for the cross wires is one-half the wavelength to be received, with the more expensive antennas h...

What is the wavelength of an electron moving at 2.60% of the speed of light? 1 m

(6y)/(y^2+y-72 divided by (y^6)/(8-y).

When you are focusing an object under the microscope, explain why some parts are in focus and some part are out of focus?

assume 8 males audition, one of them being Miles, 6 females audition, one of them being Jackie, and 4 children audition. The casting director has 3 male roles available, 1 female role available, and 2 child roles available. How many different ways can the...

Consider the collisions between a car and a truck whose weight is much heavier than the car (M ≫ m). Friction is so small that it can be ignored. If they are both moving at the same speed when they collide, what best describes the size (or magnitude) of t...

b) If the car is moving much faster than the heavier truck when they collide, what best describes the size (or magnitude) of the forces between the car and the truck? 1. Not enough information is given to pick one of these answers. 2. Neither exerts a for...

The average height of Al, Anne, and Allan is 66 inches. If Arnel is included in the group, their average height becomes 70 inches. How tall is Arnel?

What is the difference between "weighted mean" and "arithmetic mean?"

Czarina is working part time at a pastry shop baking cupcakes. If she works for 30 hours in one week on the average, how many hours a day does she work if she works 5 days a week?

An elevator accelerates upward at 1.2 m/s2. The acceleration of gravity is 9.8 m/s2 . What is the upward force exerted by the floor of the elevator on a(n) 92 kg passenger? Answer in units of N

007 (part 1 of 2) An elevator accelerates upward at 1.2 m/s2. The acceleration of gravity is 9.8 m/s2 . What is the upward force exerted by the floor of the elevator on a(n) 92 kg passenger? Answer in units of N 008 (part 2 of 2) If the same elevator acce...

An inventive child named Chris wants to reach an apple in a tree without climbing the tree. Sitting in a chair connected to a rope that passes over a frictionless pulley, Chris pulls on the loose end of the rope with such a force that the spring scale rea...

Suppose a distant world with surface gravity of 7.12 m/s2 has an atmospheric pressure of 7.48 104 Pa at the surface. (a) What force is exerted by the atmosphere on a disk-shaped region 2.00 m in radius at the surface of a methane ocean?________N (b) What...

A collapsible plastic bag contains a glucose solution. If the average gauge pressure in the vein is 1.21 103 Pa, what must be the minimum height h of the bag in order to infuse glucose into the vein? Assume the specific gravity of the solution is 1.03.

Help!! Can you check my answers? 1. The small boat was scudding into the open sea with a full sail. (1 point) getting stuck sinking deeply moving swiftly* rocking harshly 2. As an outdoor enthusiast, Kristina abhorred the fact that people left debris alon...

You pay 3.3 cents per minute for long-distance phone calls on your phone. Your phone bill is $3.40. Write and solve an equation to find the number of minutes m of long-distance calls you made. A. ; 103 minutes B. ; 11 minutes C. ; 83 minutes D. ; 10 minut...

Writing with exponents 2x2x2

A scuba diver dives to a depth of 50 feet, then rises 15 feet, sinks 12 feet, then rises 20 feet. Write an expression to describe this situation. Then solve it.

The question says: when .422 g of phosphorus is burned, .967 g of a white oxide is obtained. Determine the empirical formula of the oxide. I did the calculations and got that there would be 1 mole Phosphorus and 4.29 mol Oxygen. To get the empirical formu...

Which solution would best help control pollution in Lake Tai while keeping Wuxi strong? People should move away to make more parkland. Factories in Wuxi should limit their waste. ** Farmers should grow fewer crops. All factories in Wuxi should be closed.

There are 40 students in a class.14 of these students are girls. What percentage of the class are girls?

Why is there no vertical asymptote on F(x) = x/(x^2+1) What i learned is that to find vertical asymptote you have to set the denominator To 0 and solve for x ? In that case I find that x=-1,1

Determine the quadrant in which an angle, θ, lies if θ = 8π / 7 a. 3rd quadrant b. 1st quadrant c. 4th quadrant d. 2nd quadrant

Determine the quadrant in which an angle, θ, lies if θ = 5.40 radians. a. 4th quadrant b. 3rd quadrant c. 2nd quadrant d. 1st quadrant

Determine the quadrant in which a 130° angle lies. a. 4th quadrant b. 1st quadrant c. 3rd quadrant d. 2nd quadrant

A lawn is 3 m by 5 m there is a path 1 m wide laid around the lawn. Find the area of the lawn (Please help)

Read the following sentences from "The Swimming Contest" "Who the hell fired that shot?" "My gun went off," one of the boys said. When he saw me coming up the officer said, "We've lost that information, damn it! They've killed that Arab of yours" "We've l...

I DONT GET IT; IT SAYS WHICH OF THE FOLLOWING PAIRS OF NUMBERS HAVE A LEAST COMMON MULTIPLE OF 56...... THESE ARE THE PAIRS: 2 AND 28 7 AND 8 4 AND 14 3 AND 17 HELP MEEEE

A train, with an initial velocity of 35ms^-1 along a straight track, deccelerates at a constant 0.25ms^2. Determine how far it travels in 2 minutes.

Calculate the change of volume that occure when a steel bearing with an initial volume of 1.8cm^3 is heated from 20°C to 80°C. Tried to use the formula DeltaV/Vinitial=Beta×DeltaT but kept getting the wrong answer though my maths could be off?

A microphone is attached to a spring that is suspended from the ceiling, as the drawing indicates. Directly below on the floor is a stationary 624-Hz source of sound. The microphone vibrates up and down in simple harmonic motion with a period of 2.31 s. T...

Evaluate the expression √−7/√ −6√−5 and write the result in the form a+bi. I keep getting b as 0.483i but apparently its wrong?

Bromine and chlorine gas react to give bromine monochloride (BrCl) according to Br2(g)+Cl2(g)⇌2BrCl(g) Given initial concentrations [Br2]=1.50 mol L-1, [Cl2]=0.90 mol L-1 and [BrCl]=0 and K=7 determine (to two decimal places) the equilibrium concentration...

What led to conflict in Bosnia between the Bosniaks and Serbians? A. Free elections in Bosnia promoted a Serbian Revolution that sought to rid the region of Bosniaks through mass deportation. B. Military buildup of the Bosnian Liberation Front saw a coup...

Turn the recursive function into its equivalent explicit function: f(1) = 18; f(n) = f(n - 1) + 6; n is be greater than or equal to 2* How would I solve this? Any help is appreciated! Thanks! *The symbol for that is the > with a line under it, I couldn't...

(Note): Hello! I am really stuck on this problem and am trying to figure out how to solve it! I don't want the answer, I just want to know how to solve an equation like this: Consider a sequence whose first five terms are: -1.75, -0.5, 0.75, 2, 3.25 Which...

Can someone check my answer please? Read the following sentences from "Marriage is a Private Affair." ""I owe it to you, my son, as a duty to show what is right and what is wrong. Whoever put this idea into your head might as well have cut your throat. It...

True or False: If you take a course and do not pass it, you still get the credit.

Predict whether copper (ii) titrate (CuC2H2O6), Ksp =4.00x10^4, will precipitate if 10.0g of Cu(NO3)2 is added to 0.500L of 0.550M sodium tartate (NaC2H2O6)

What is the domain and range of y=0.13x+27? Please help

Develop an argument that explains whether or not the powers of the presidency as executed since the Great Depression have made the presidency too powerful an office.

What are the lengths of the sides of the arrays that show how 6 boxes can be arranged? A. 1,2,3,6 B.1,2,4,6 C. 1,6 D. 1,3,6

i am an even number between 50 and 99. i am a multiple of 9. my tens digit is 5 more than my units digit. what am i?

i am a multiple of 20. i have 3 digits. my hundreds digit and tens digit add to make 9. half of me is less that 100 what am i

I NEED TO FIND THE ANSWER TO THIS VERY HARD QUESTION

If n (U) = 16, n (A) = 7 and n (B) = 12, Find: a) n (A') b) n (B') c) greatest n (A n B) d) least n (AUB)

what shape garden could Mr.brown create

Line GI bisects angle DGH so that m angle DGI is x-3 and m angle IGH is 2x-13. Fine the value of X

take two hundred and fourteen from three hundred and thirty-nine

Why do restaurants wash their dishes with hot water?(1 point) Responses Hot water has more potential energy than cold water so it is more effective at removing grease and food scraps. Hot water is cheaper than cold water. The molecules of hot water have m...

what is 543 x 67 =______

Answers

The following answers were posted by visitors named Amelia.

d being delta the triangle btw any help would be by me appreciated Ame

That would be the answer for the markup on cost, but the 70% is a markup on selling price not cost. Formula: %Markup on cost=%markup on selling price/100% - % markup on selling price x = 70%/100%-70% x = 70%/30% x = 233.333% cost $240 x (233.33%) = $800 ?...

Can you think of any two numbers that, when subtracted, multiplied, or divided, yield a number that is not rational? For example, take the rational numbers 2 and 3. 2 - 3 = -1 2 * 3 = 6 2 / 3 = 2/3 Are any of the results irrational? And are there any othe...

Allen's hummingbird (Selasphorus sasin) has been studied by zoologist Bill Alther.† Suppose a small group of 11 Allen's hummingbirds has been under study in Arizona. The average weight for these birds is x = 3.15 grams. Based on previous studies, we can a...

I got A and B i cant figure out C

the second answer is supposed to be in the hundreds

both of these are wrong?

the third answer is supposed to be in $

Thank you so much for helping me!!!!

im sorry, i just wanted to group my questions together so they would be easyier to find later

oh its 11.7! got it thank you!

Meg has 20 pet stickers to go on this page 1/4 of them are dog stickers 1/2 of them are cat stickers The rest are rabbt stickers. How many Rabbit stickers does Meg have?

You should break all of your questions into individual questions. With this we can't where to start.

Nevermind, I think I've figured out what I was doing wrong!!

I meant v=wr equation.

I don't get it ?

Yesss okay thank you sir

Use quadratic formula to find all x's and chose the one that is x>0

answers 1-6 on the unit 4 lesson 4 test (connexus) C C B B B C

i am not sure it seems to be describing something more solid

i just don't know what it means by ROUND pellet

I am from connection academy (connexus) in michigan

I got DeltaV=(1/12×10^-6k)(80-20)(1.8cm^3) =1.296×10^-3cm^-3 The answer Im supposed to be getting is 3.9×10^-3cm^-3?

Thank you so much! I had totally forgotton about the formula

Tried that answer as well but the website is till telling me its wrong. Could be a typo will have to check with the instructor.

Please for the love of god explain how i do the last bit of this equation on the calculator

The moment of inertia of a point mass (i.e. the kid in this case) is MR^2 (we use radius R of the merry-go-round because the kid's on the edge). So the complete expression of the final angular momentum is: L_f = (335 + 43.1 * 1.96^2) (w_f)

The answer is B

Yes, n ≥ 2, thank you! So the answer that was given to me was: f(n) 12 + 6n; n ≥ 1 So do I just plug in the numbers for An = 6(n + 2) to get there? Sorry, I'm having a bit of trouble understanding it... I'm just unsure of how they came up with that answer...

Oh wow! It was so simple I couldn't even see it! I guess I overthought it.... Thank you so much for your help!

Thank you oobleck! I got B, so I'm gonna go with that!

The answer is 0.25m*0.15

C is definitely correct

Yep, you're correct!

Egypt has multiple times where famine may come, so their fields of astronomy and mathematics help them calculate when to plant their harvest and then to collect them before drought or locusts come and wipe out the entire crop. Hope this helps.

Anyone else come here for late night homework? Im sick and I'd given up so thanks!

C was the other one I thought, is it that one? I don’t think it’s B, but of course, I could be wrong

Thank youuuu.. Chris answers ARE CORRECT!!! ~FMOIG: shortyisfunny_

That was so helpful thank you

Lmaooo I feel so exposed I’m from primavera too 💀

I get the bit up to 4.35l, but I don't understand the 4.5 bit.

Okay tysm but how would I write that as > or equal to 0 and < or equal to

How did you get the answer?

Thank you so much😋😄😄♥️❤️❤️

ya thanks 😂😄❤️🤦🙎🙇

I do not see the answer that involves to the question.

ok so what is it

I want to know more about this topic

I still can't do this, I'm doing Khan Academy :(

Earths curved shape and tilt on its axis do not allow the suns rays to fall evenly its surface

345 x 67 = 36,381 I did the math 🙂

I made a mistake 345 x 67 = 23,115 not 36,381