# jake

Newest questions and responses by jake-
## history

1: How did the German part of Charlemagne's kingdom change under the rule of Otto the Great? A. It was divided by several German dukes. B. It fell under the rule of the Byzantine empire. C. It was invaded by Anglo-Saxons. D. It was united as one empire. 2:

*asked on February 12, 2019* -
## history

How did the German part of Charlemagne's kingdom change under the rule of Otto the Great? A. It was divided by several German dukes. B. It fell under the rule of the Byzantine empire. C. It was invaded by Anglo-Saxons. D. It was united as one empire.

*asked on February 12, 2019* -
## Physics

What are the forces you exert on a briefcase as you hold it while standing at a bus stop?

*asked on February 11, 2019* -
## Physics

Heat is added to a silver bar of mass 0.034 kg and length 0.28 m. The bar expands by an amount of 3.8×10-4 m. How much heat was added? I need the answer and the equation please thanks!

*asked on February 7, 2019* -
## Physics

Liquid oxygen boils at a chilly -183.0o C when the pressure is one atmosphere. A small silver disk of mass 34.0 grams and temperature 27.3o C is dropped into the liquid. What mass of oxygen boils off as the coin cools to -183.0o C? I need ther answer and

*asked on February 7, 2019* -
## Physics

A 8.52 kg block of ice has a temperature of -17.9o C. The pressure is one atmosphere. The block absorbs 3.780×106 J of heat. What is the final temperature of the liquid water? (Give your answer in oC, but enter only the numerical portion--oC is implied) I

*asked on February 7, 2019* -
## Physics

A 0.60 kg chunk of ice has a temperature of -28.2o C. The pressure is one atmosphere. Heat is added to the chunk until it is completely vaporized and the steam is at a temperature of 114.4o C. How much heat was needed for this transformation? Please i need

*asked on February 7, 2019* -
## Physics

Heat is added to a silver bar of mass 0.034 kg and length 0.28 m. The bar expands by an amount of 3.8×10-4 m. How much heat was added? Please i need the answer and the equation to get to the answer Thanks!

*asked on February 7, 2019* -
## Physics

0.115 kg of water at 89.0o C is poured into an insulated cup containing 0.226 kg of ice initally at 0o. Calculate the mass of liquid when the system reaches thermal equilibrium.

*asked on February 7, 2019* -
## Physics

4 kg of lead shot at 91.1o C are poured into 4 kg of water at 29.5o C. Find the final temperature (in oC) of the mixture. Use cwater = 4187 J/kg oC and clead = 128 J/kg oC. Please i need the answer and equation used to solve for the answer Thanks!

*asked on February 7, 2019* -
## Physics

A 223.0 g piece of lead is heated to 85.0oC and then dropped into a calorimeter containing 577.0 g of water that initally is at 18.0oC. Neglecting the heat capacity of the container, find the final equilibrium temperature (in oC) of the lead and water.

*asked on February 7, 2019* -
## Physics

A lead ball, with an initial temperature of 25.0oC, is released from a height of 125.0 m. It does not bounce when it hits a hard surface. Assume all the energy of the fall goes into heating the lead. Find the temperature (in degrees C) of the ball after it

*asked on February 7, 2019* -
## history

to control the effects of the dust bowl, the state of texas paid farmers to do which of the following? Select all that apply. (3 points) build ponds to reservoirs plant different crops use more powerful tractors plant rows of trees to serve as windbreaks

*asked on February 1, 2019* -
## Math

I have a math question that I am somewhat confused on that I need a bit of help with please. What is the shortest possible perimeter for an arrangement with an area of 15 square feet? How do I go about figuring this out?

*asked on January 28, 2019* -
## Chemistry

Carbonic acid forms when carbon dioxide dissolves in water according to this equation: CO2+H2O =H2CO3 How many moles of CO2 must dissolve in an excess of water to produce 3 moles of H2CO3?

*asked on December 17, 2018* -
## Math

first of today. wats 7-3 x 2x / 5 x 4 + 680 x 5(8x + 28) = 157

*asked on October 24, 2018* -
## Math

if angle a equals 91 degrees and angle b equals 40 degrees what is the measurement of angle 1 on a triangle?

*asked on October 15, 2018* -
## New Mexico history

How were the maya and the Aztec civilizations similar

*asked on October 11, 2018* -
## English

is this sentence correct? Barlow uses a logical argument because cyber security is a relatively new issue, meaning many people will not be properly informed on the topic. if i put a colon after argument would the make it correct?

*asked on October 3, 2018* -
## English

is this sentence correct? Barlow uses a logical argument because cyber security is a relatively new issue, meaning many people will not be properly informed on the topic.

*asked on October 3, 2018* -
## Algebra

Write in exponetial form: root x 1/x

*asked on September 24, 2018* -
## history

In which geographic region Texas is the NASA Johnson space center located A. Coastal Plains B. Great Plains C.Mountain and Basins D. North Central Plains I think the answer is B

*asked on September 5, 2018* -
## Calculus

Let f(x)=ax^2+(3a−2)x−6. What point does the right-hand x- intercept approach as a increases without bound?

*asked on July 29, 2018* -
## math

A bag contains 4 white, 3 blue, and 5 red marbles. 1. Find the probability of choosing a red marble, then a white marble if the marbles are replaced 1/12 5/36 5/6 5/12 2. Find the probability of choosing 3 blue marbles in a row if the marbles are replaced.

*asked on May 21, 2018* -
## Chemistry

49.0 mL of HClO3 is completely titrated by 68.4 mL of a Sr(OH)2 solution whose concentration is 0.3893 M. What is the molarity of the HClO3 solution? Sr(OH)2 + 2HClO3 = 2H2O + Sr(ClO3)2

*asked on May 17, 2018* -
## Math

What is the probability of getting an even number when rolling a six-sided number cube?

*asked on May 15, 2018* -
## math

Describe a situation that models a linear pattern and then describe a situation that models a nonlinear pattern.

*asked on April 17, 2018* -
## Calculus

A function has f''(x) = 10 and has f'(4) = 0 and f(2)= 4. Find f(x).

*asked on April 2, 2018* -
## math/combination probability

what is the probability of getting all questions right on a 15 question, 3 multiple choice (each) with just guessing? i did 15 C 3 and got 1/455

*asked on March 28, 2018* -
## Social Studies Help please its a quiz

Dix also joined a growing movement to improve conditions in prisons. Men, women, and children were often crammed together in cold, damp rooms. When food supplies were low, prisoners went hungry—unless they had money to buy meals from jailers. Five out of

*asked on March 7, 2018* -
## S.S help please thank you

Which of the following best summarizes the information shown in the graphic organizer? (1 point

*asked on March 7, 2018* -
## math

0.2x0.8

*asked on March 6, 2018* -
## maths

The speed of light is about 2.99x10^8 m/s. If a rocket travels at one-fifth the speed of light, find its speed in km/h (in scientific notation correct to 2 significant figures)

*asked on March 6, 2018* -
## social studies

please help, i have no clue! they all seem like a good answer to me.. The Macdonald-Cartier bridge that stretches the Ottawa River and connects Ontario to Quebec is named for two Canadian politicians, one ______ and one _______. A.English, German

*asked on March 2, 2018* -
## Math

The ratio of the cost of a tennis racket to tennis balls is 18:1. If a can of balls cost $5.35, what is the cost of the racket?

*asked on February 27, 2018* -
## math

2g – 1 = 3g + 6 how do i do this equation?

*asked on January 18, 2018* -
## Math - algebra

On Day 1 of the state fair, Austin sold 15 handmade stools. On each of the next 9 days, he sold 5 stools. The linear function f(d) can be used to represent the total number of stools Austin sold, where d is the day of the fair. Solve the problems below.

*asked on January 4, 2018* -
## Physics

What makes a hydrometer with a spherical bulb good for measuring precise density? What makes this shape better than others?

*asked on December 4, 2017* -
## Chemistry ASAP please?

For electromagnetic radiation with a wavelength of 576.3 nm: (a) What is the frequency of the radiation (in s-1)? (b) What is the energy (in J) of one photon of the radiation? (c) What is the energy (in kJ) of one mole of photons of the radiation So a I go

*asked on November 4, 2017* -
## PreCalc

If 3x^3+ax^2+3x+2 leaves a remainder of 4 on division by (3x-1), find a.

*asked on October 30, 2017* -
## science

Bison, Zebra, and kangaroos have similar ecological niches but cannot be shown in the same food web, why? (doesn't mater where they live)

*asked on October 15, 2017* -
## gr. 9 Sience

5 foods that contain the high energy products of photosynthesis

*asked on October 14, 2017* -
## Socioloy

Why is the 1970s considered to be a decade of change for the American media?

*asked on October 12, 2017* -
## PreCalc

The “Hatch Shell” in Boston has the arch with semi-elliptical form with a horizontal major axis. The base of the arch is 110-foot long and the highest part of the arch is 40 feet above the scene. Find the height of the arch of the “Hatch Shell” 33

*asked on October 12, 2017* -
## Geography

All of the following are the result of the increase in large-scale, green revolution agriculture in the region, except: A. more than 2 million small farmers have been forced to sell their land in Brazil alone since 1985. B. there has been an increase in

*asked on October 12, 2017* -
## SS

4. Which of the following statements best summarizes Washington viewpoint on American foreign policy

*asked on October 4, 2017* -
## math

what is a description of the ratio 52:12

*asked on September 25, 2017* -
## Math

The area of a football field is 57600 square feet what is the area in square yards?

*asked on September 15, 2017* -
## Language arts

Consider this line from “Two Kinds”: For unlike my mother, I did not believe I could be anything I wanted to be. I could only be me. In a paragraph, explain how those words describe the conflict between the daughter and her mother. Is there a winner in

*asked on September 14, 2017* -
## Physics

Water flows through a pipe of radius 4 cm at a rate of 3.5 m/s. Suppose each water molecule is singly ionized (highly unrealistic). a) What is the electric current density associated with the flow of these ions? b) What is the electric current in the pipe?

*asked on July 10, 2017* -
## Physics

An electric filament can heat 200 cm^3 of water from 5°C to 95°C in 6 minutes. If the voltage source is a 12 V battery, how much current does it draw?

*asked on July 10, 2017* -
## US Government

The President can choose to get rid of democracy. A) True B) False (the correct answer?)

*asked on June 14, 2017* -
## Washington state history

please help. Which industries remain as important to Washington’s economy today as in the 1800s? Select all that apply. A.biotech B.entertainment C.forestry D.mining E.software development F.tourism

*asked on June 6, 2017* -
## washington state his

please help. Which of the following best identifies how Washington’s economy changed overall after World War II? A.It scaled back agricultural production. B.It shut down most manufacturing operations. C.Its activities became more diverse. D.Its

*asked on June 6, 2017* -
## Math

The length of a rectangle is 5 meters more than twice the width, and the area of a rectangle is 42 square meters. Find the length and width of the rectangle.

*asked on May 8, 2017* -
## Math

At the city museum, child admission is $5.40 and adult admission is $9.30. On Friday, 134 tickets were sold for a total of $957.60. How many adult tickets were sold that day?

*asked on May 8, 2017* -
## physic

Sample 1, Original Length 250 mm and 10 mm Diameter, Length after testing 250.23 mm the force used for the test was 15KN Sample 2, Original Length 250 mm and 14 mm Diameter, Length after testing 250.21 mm the force used for the test was 15KN 1. Calculate

*asked on May 1, 2017* -
## chemistery

explain the progress of the reaction in terms of kinetic energy explain how various factor affect the rate of reaction

*asked on April 22, 2017* -
## Math calculus

a cylindrical vat must hold 5m^3, the vat must be wider than it is tall, but no more than 3 m in diameter. What dimensions will use the least amount of material?

*asked on April 5, 2017* -
## Science

If a 1 tonne car travels at 16.7 m/s (60km/h) then it would have a momentum of

*asked on March 23, 2017* -
## Social studies

To what extent should canadians try to stop human rights abuse in other countries today?

*asked on March 20, 2017* -
## Chemistry

what is the oxidation number of Carbon in C6H12? thank you!

*asked on March 19, 2017* -
## science

what is the molar ratio between barium hydroxide and potassium hydrogen phthalate if they were reacted together in an acid base titration

*asked on March 15, 2017* -
## math

Find the exact values for the lengths of the labeled segments a, b and p. Note that r=3 is the radius of the circle, and s=2 is the arc length from the point (3,0) around the circle to the indicated point.

*asked on March 13, 2017* -
## Johnson

A perimeter of EFGH is 100cm.what is the length of side FE?

*asked on March 13, 2017* -
## reading

What is a summary for chapter 2 slam by Walter dean Myers

*asked on March 7, 2017* -
## Math

There are two triangles for which A=30∘,a=5,and b=8 The larger one has c= ? and the smaller one has c= ?

*asked on March 1, 2017* -
## Simple interest

Charlotte borrows $9000 over 5 years to buy a second hand car. The loan must be repaid over 5 years at 12% p.a. simple interest calculate the monthly repayment if the payments are spread equally over the 5 years.

*asked on February 21, 2017* -
## physics

An alpha particle (charge = +2.0e) is sent at high speed toward a gold nucleus (charge = +79e). What is the electric force acting on the alpha particle when the alpha particle is 3.3 ✕ 10-14 m from the gold nucleus?

*asked on February 13, 2017* -
## Chemistry

If you wanted to create a equimolar buffer using 1.0 mol of NaHS in 1.0L of water what acid would you need to add? how many moles of that acid do you need to add?

*asked on February 11, 2017* -
## MATHS

The quadratic function f(x) has roots at x=4 and x=-2 and has value of 2 at x=0. Does f(x) have a minimum or maximum? Find the value of the /minimum/maximum value of f(x).

*asked on January 31, 2017* -
## physics

A long straight vertical wire of diameter 2.0mm carries a steady current upwards. At 30mm from the centre of the wire, the magnetic field strength is 0.10mT. Sketch a graph to show the variation of magnetic field strength from the wire surface to a

*asked on January 26, 2017* -
## physics

An unstable nucleus with a mass of 18.0 ✕ 10-27 kg initially at rest disintegrates into three particles. One of the particles, of mass 5.0 ✕ 10-27 kg, moves along the positive y-axis with a speed of 9.0 ✕ 106 m/s. Another particle, of mass 7.4 ✕

*asked on January 24, 2017* -
## physics

Two cars (A and B) of mass 1.1 kg collide. Car A is initially moving at 18 m/s, and car B is initially moving in the opposite direction with a speed of 9 m/s. The two cars are moving along a straight line before and after the collision. (Enter the

*asked on January 24, 2017* -
## physics

How much heat is absorbed by a 30g iron skillet when its temperature rises from 24oC to 93oC? Joules do i addition everything?

*asked on January 24, 2017* -
## physical science

How much heat is absorbed by a 30g iron skillet when its temperature rises from 24oC to 93oC? Joules do i addition everything?

*asked on January 24, 2017* -
## Math

How many 4/5-foot planks can be cut from a board which is 12 feet long?

*asked on January 19, 2017* -
## math

If a jet flies at a speed of 600 km/h, how many meters does it fly in 10 seconds? There are 1000 meters in 1 km

*asked on January 19, 2017* -
## Calculas

lim (x⁻¹-1)⁄x-1 as x approaches 1. I know the answer is -1 but I am not sure how to solve the numerator x⁻¹-1.

*asked on January 14, 2017* -
## Science

lesson 9: energy and the environment unit test science 8 A Unit 4: Energy and the environment Please HELPPPPPP!!!!!!!

*asked on January 12, 2017* -
## calculus

find the maximum and minimum value of the function f(x)= x-x^3 on the interval [-2,2] I also need help with this question What is the largest possible product of two negative number whose sum is 1?

*asked on January 8, 2017* -
## Physics

5. If a wave has a wavelength of 20m and a speed of 100 m/s, what is the period of the oscillation? v = wavelength / period 100 = 20 / period 100*20 = periodperiod = 20 / 100 2000 s = period OR period = 20 / 100 period = 0.2 s I don't know which one is

*asked on January 2, 2017* -
## Physics

1. A rectangular coil 0.065 m by 0.080 m is positioned so that its cross-sectional area is perpendicular to the direction of a magnetic field. The coil has 66 turns and a total resistance of 7.6 Ω and the field decreases at a rate of 2.5 T/s. What is the

*asked on December 21, 2016* -
## Physics -HELP

1. A rectangular coil 0.065 m by 0.080 m is positioned so that its cross-sectional area is perpendicular to the direction of a magnetic field. The coil has 66 turns and a total resistance of 7.6 Ω and the field decreases at a rate of 2.5 T/s. What is the

*asked on December 21, 2016* -
## Physics -HELP

A rectangular coil 0.065 m by 0.080 m is positioned so that its cross-sectional area is perpendicular to the direction of a magnetic field. The coil has 66 turns and a total resistance of 7.6 Ω and the field decreases at a rate of 2.5 T/s. What is the

*asked on December 21, 2016* -
## Physics -HELP

A coil with 337 turns of wire, a total resistance of 47 Ω, and a cross-sectional area of 0.35 m2 is positioned with its plane perpendicular to the field of a powerful electromagnet. What average current is induced in the coil during the 0.30 s that the

*asked on December 21, 2016* -
## math

A bakery sells 5800 muffins in 2010. The bakery sells 7420 muffins in 2015. Write a linear model that represents the number y y of muffins that the bakery sells x x years after 2010

*asked on December 21, 2016* -
## Math

Given that the line x/a + y/b = 1 passes through ( 0 , 3 ) and ( 5 , 1 ), find the value of a and b

*asked on December 18, 2016* -
## Math

Solve for x: e^4x-3 = 2e^2x1 ln2x+6) - ln(3x-1) = ln(2) Then, simply the radicals

*asked on December 14, 2016* -
## Math

What power output will be provided for an amplifier having a gain of 12dB if the power input is 75W?

*asked on December 14, 2016* -
## literature

In The Call of the Wild" which dog is sled-team leader after the death of Spitz?

*asked on December 12, 2016* -
## precalculus

Given: r = 4/-2-costheta What type of conic does this represent? ________________________________________ Circle Ellipse Hyperbola Parabola

*asked on December 11, 2016* -
## Science Physics

I don't understand how I would know what would happen if it collided or bounced, etc. How do I solve a question like this? Suppose the total momentum of two masses before collision is 100kg m/s. What is the total momentum of the two masses after they

*asked on December 5, 2016* -
## Physics

(a) If the wavelength of an electron is 5.37 ✕ 10−7 m, how fast is it moving? (b) If the electron has a speed equal to 3.80 ✕ 106 m/s, what is its wavelength? What equation should I use?

*asked on December 4, 2016* -
## Chemistry Lab

So I have a lab exam tomorrow and our instructor said that one of the questions would be as follows: Prepare 100mL of 0.03 M Copper Sulfate, beginning from copper sulfate pentahydrate. Calculate the exact molarity to 3 sig figs. Alright so I understand how

*asked on November 21, 2016* -
## chemistry

P4 + 6 Br2 -> 4PBr3 In a particular reaction, 20 grams of phosphorus P4, is combined with 50mL liquid bromine ( Density= 2.93 g/ml) 1) Calculate the mass of product in grams for each of the reactants 2) Limiting reagant and Mass Maximum mass of PBr3 so for

*asked on November 7, 2016* -
## math

How many square feet of carpet will be needed to cover the kitchen and bedroom floors? 237.5 square feet 365 square feet 425 square feet 475 square feet

*asked on October 18, 2016* -
## Social Studies

Why were Middle Colones more favorable to farmers than New England? Thanks in advance for any responses!

*asked on October 16, 2016* -
## Chemistry

Net Ionic equation for 1. Iron(II) Iodide and Magnesium Acetate 2. Ammonium Phosphate and Cobalt(III) Chloride 3. Sodium Acetate and Potassium Chloride These are the only ones I have left on my HW and I can't seem to figure them out would appreciate some

*asked on October 12, 2016* -
## College Physics

A 1300-kg car moving on a horizontal surface has speed v=65 km/h when it strikes a horizontal coield spring and is brought to rest in a distance of 3.0m

*asked on October 5, 2016*