09/07/21

Intro to Physics 1111

Fairgoers ride a Ferris wheel with a radius of 5.00  (Figure 1). The wheel completes one revolution every 33.0  .What is the average speed of a rider on this Ferris wheel?If a rider accidentally... more
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09/05/21

A ruler is attached to a tree, 1.27m up the ground. An acorn falls from the tree, if it took 0.196s to pass the ruler, how high was it before it fell?
Assume the acorn didn't hit anything as it fell.I used the formula: S=ut + 1/2 at^2 to find u. Then I used h=u^2/2a to get h and I added it to 1.27m but my answer was wrong.
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09/02/21

Can anyone help me out with this question, with steps?
A uniform 2 kg disk of radius 25 cm is rotating around its central axis at an angularspeed of 20 rad/s. At time t=0, a man begins to slow it at a uniform rate until it stops at t = 8 s.(a) By time... more
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09/02/21

What is the chance the jam is toxic
A woman picks 7 apples in the forest, but unfortunately two of them are poisonous. Three apples are used in a pie, which turns out to be toxic. Another two are used in a jam. What is the chance... more
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09/02/21

Propagating error for an equation that uses radius, when measurements are in diameter?
I'm trying to propagate standard error, however to get the number needed for the formula I'm using, I had to divide my diameter data in half to get my radius data.Do I have to divide all of my raw... more
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09/01/21

Graphical Analysis of One-Dimensional Motion
A graph of v(t) is shown for a world-class track sprinter in a 100-m race. (See figure below. For each answer, enter a number.)A graph of Runner Velocity vs. Time has a horizontal axis labeled Time... more
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09/01/21

An object starts at position x = +10 meters. It moves at +5 m/s for 10 seconds then (instantly! magically!) changes its velocity to -10 m/s for the next 10 seconds.
An object starts at position x = +10 meters. It moves at +5 m/s for 10 seconds then (instantly! magically!) changes its velocity to -10 m/s for the next 10 seconds.An object starts at position x =... more
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09/01/21

Statistics and Probability
In a recent year, 8,090,845 male students and 1,841,009 female students were enrolled as undergraduates. Receiving aid were 64.3% of the male students and 69.9% of the female students. Of those... more
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08/31/21

Generalchemistry117
A molecular biologist measures the mass of cofactor A in an average yeast cell. The mass is 87.51 pg. What is the total mass in micrograms of cofactor A in a yeast colony containing 10^5 cells?... more
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08/31/21

The following graph (fig. 10-7 from your textbook) displays the molar solubility of oxygen at a pressure of 1.00 atm as a function of temperature.
Read the graph to determine the molar concentration of oxygen dissolved at 25 °C and 1 atm oxygen pressure. Then use Henry's law to predict the molar concentration of oxygen dissolved at 25... more
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08/31/21

Imagine an aluminum cup of 0.75 liter capacity filled with mercury at 10.4 degrees C. How much mercury, if any, will spill out of the cup if the temperature is raised to 24.6 degrees C?
The coefficient of volume expansion of mercury is 1.8 E-04/ degree C. Express your answer in cubic centimeters.
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08/30/21

Constitutional isomers

Are the following constitutional isomers?C-C-C-C-F C-C-C-C-F C-C-C-C-F C-C-C-C-F| | ... more
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08/24/21

Which is not a property of water?
a. hydrogen bonds form between molecules of opposite partial charges. B. A covalent bond is formed by sharing the electrons of two... more
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08/24/21

Need help asap!
1a. Solve the rational equation below using algebra. Enter your solution(s).1b. Solve the same rational equation using a calculator. Graph the left side of the equation as y1 and the right sides as... more
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08/24/21

Chemistry question on equilibrium
Consider the following reaction at equilibrium at 135oC: 2AB3(g) ⇌ A2(g) + 3B2(g) If 2.00 mol of AB3(g) were placed into a 10.0 dm3 container and the concentration of B2(g) at equilibrium was... more
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08/23/21

A soft drink machine dispenses x cans of soda each week at $0.75/soda. The cost to the owner of the soda machine for each soda is $0.10.
The weekly fixed cost for maintaining the soda machine is $25. Write an equation that relates the weekly profit, P, in dollars to the number of cans sold each week. Then use the equation to... more
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08/23/21

The standard exam page is 8.50 inches by 11.0 inches. Its area in cm 2 is
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08/20/21

Trigonometry Modeling
A surfer is riding a wave with an amplitude of  feet and a period of  feet. If the wave completes a period in  seconds, what is the speed of the surfer? A. 192ft/s B. 24ft/s C. 3ft/s D. (1/3)ft/s
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08/18/21

Help! How would I answer these rates of reaction questions?

reaction: 2O3(g) > 3O2(g)other info: 2 moles of ozone gas (O3) was placed in a 1L reaction vessel and the concentration of the reactant and product were each measured every 20 seconds. (both... more
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08/18/21

Hi, there please help me and thank you in advance
1)If f(x)= 4x-8 and g(x)=-x2+6x-8f(x)• g(x)2) f(x)=2x3-5x2 g(x)=2x-1 Find (f•g)(x)
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08/12/21

Amusement Park Food Supply
The annual attendance at the amusement park is initially 2 million people and is increasing at 3% per year. The park’s annual food supply is initially adequate for 4 million people and... more
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08/11/21

Calculate the torque due to the hinge.
The drawbridge's weight: W = Mg = 6400 lb Its length: ℓ = 40 ft The height the cable reaches: h = 16 ft I can't insert an image but the picture looks like this:right triangle starting from 0. 0 is... more
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08/10/21

How many milliliters of 2.75 M Ca(OH)2 is needed to completely neutralize 0.198 L of 2.03 M H3PO4. Make sure your answer has the correct number of significant figures.
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08/10/21

Describe the graph of the parametric curve

Describe the graph of the parametric curve x= tan (t) y=tan^2(t)by first eliminating the parameter.
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08/10/21

Two dice are rolled. Determine the probability of the following. ("Doubles" means both dice show the same number.) rolling a 4 or doubles
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