12/12/22

Please find the area and show the work, thank you.

Farmer Jones, and his wife, Dr. Jones, decide to build a fence in their field, to keep the sheep safe. Since Dr. Jones is a mathematician, she suggests building fences described... more
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12/12/22

What is the speed of a wave that has a wavelength of 4 meters and a frequency of 2 Hz? V = fʎ
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12/12/22

Suppose a rectangular patio has an area of 24 ft² and its length is 2 more than its width. What is its length, width, and perimeter?
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12/12/22

Don't know what formula to use Need Help please
The mass, 𝑀, (measured in grams) of radioactive substance remaining after 𝑦 years is given by: 𝑀 = 1400𝑒−0.03𝑦 Find the mass remaining after 10 years. Find the time taken for the mass to reach 10%... more
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12/12/22

A 491 kg roller-coaster car rolls down past point A (radius of 10m) and then up past point B (radius of 15m).
(a) If the vehicle has a speed of 26.0 m/s at point A, what is the force of the track on the vehicle at this point?(b) What is the maximum speed the vehicle can have at B for gravity to hold it on... more
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12/12/22

terry has a cube with sides labeled 1 through 6. he rolls the number cube twice. what is the probabilitythat the sum of the two rolls is a prime number, given that at least one of the rolls is a 1?
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12/11/22

3. What quantity of heat (in kJ) would be required to convert a 2.5-pound block of ice at -4.0 C to steam at 110.0 °C?1 lb = 2.2 kg
could someone please help me on this question please.
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12/10/22

You are conducting a study to see if the proportion of voters who prefer Candidate A is significantly less than 0.77. You use a significance level of α = 0.002 .
You are conducting a study to see if the proportion of voters who prefer Candidate A is significantly less than 0.77. You use a significance level... more
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12/10/22

How is it that we can lose so many neurons without massive memory effects?
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12/09/22

Exponential Function Text
An element with a mass of 680 grams decays by 12.1% per minute.To the nearest minute,how long will it be until there are 230 grams of the element remaining?
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12/08/22

INORGANIC CHEMISTRY
We discussed molecular/ionic shape twice this semester. Why? Discuss the similarities and differences between VSEPR and Crystal Field Theory. When is it appropriate to use each?
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12/06/22

A major component of gasoline is octane.
A major component of gasoline is octane C8H18. When octane is burned in air, it chemically reacts with oxygen gas O2 to produce carbon dioxide CO2 and water H2O. What mass of water is produced by... more
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12/06/22

Write the complex number in polar form with argument 𝜃 between 0 and 2𝜋. i (√2 − √6 i)
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12/06/22

Trigonometry problem

Consider an angle with an initial ray pointing in the 3-o'clock direction that measures θ radians (where 0≤θ<2π). The terminal point is (1.12,−2.12)What is the angle's measure in radians?
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12/06/22

Determining an equation

Use the given information about the graph of an ellipse to determine its equation.center at the origin, symmetric with respect to the x- and y-axes, focus at (4, 0), and point on graph (0, 3)
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12/06/22

calculus question
Using the method of u-substitution,∫^52(3x−8)4dx=∫^b a f(u)du1) where u= (3x-8) (enter a function of x)2) du= ??? dx (enter a function of x)I got 1, I just need help... more
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12/06/22

How can I found mass with pourcentage yeid
If 52.0 g of SO2 completely react and the percent yeild is 57.0%, how many grams of sulfurous acid, H2SO3(aq) are produced
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12/05/22

compute the following in terms of x

Assume sin⁡(θ)=x/11 where 0<θ<π/2. Compute the following in terms of x.cos⁡(2θ)= tan⁡(θ/2)= 
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12/05/22

(a) What is the magnitude of the angular momentum of the system relative to the center of mass? (b) What is the angular speed about the center of mass?
A puck of mass m1 = 65.0 g and radius r1 = 4.20 cm glides across an air table at a speed of = 1.50 m/s as shown in Figure a. It makes a glancing collision with a second puck of radius r2 = 6.00 cm... more
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12/05/22

If a tree dies and the trunk remains undisturbed for 1.270 × 10⁴ years, what percentage of the original ¹⁴C is still present? (The half-life of ¹⁴C is 5730 years.)
If a tree dies and the trunk remains undisturbed for 1.270 × 10⁴ years, what percentage of the original ¹⁴C is still present? (The half-life of ¹⁴C is 5730 years.)
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12/05/22

P4 -> H3PO : Balance the equation for a half-reaction that occurs in acidic solution. Use e− as the symbol for an electron.
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12/04/22

statistics homework review helppp
Giving a test to a group of students, the grades and gender are summarized below A B C Total Male 15 17 8 40 Female 16 5 3 24 Total 31 22 11 64 If one student is chosen at random, Find the... more
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12/04/22

I need answer to study for chem finals
How much heat must be applied to a 18.3-g sample of iron (SH = 0.449 J/(g · °C)) in order to raise its temperature from 23.8°C to 356.6°C?
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12/03/22

I am lost and need some momentum. Please help me!
A girl on a playground swing starts from rest at an angle θ=33 from the vertical. The chains have length L=4 meters. Find her speed as she passes through the bottom of the swing. Assume no pushing,... more
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12/02/22

How much energy (in kJ) is required to heat 100.0 g of water from 0.00 C to 100.0 C? ∆Hfus = 6.02 kJ/mol ∆Hvap = 44.0 kJ/mol Cwater = 4.184 J/gK
How much energy (in kJ) is required to heat 100.0 g of water from 0.00 C to 100.0 C?∆Hfus = 6.02 kJ/mol∆Hvap = 44.0 kJ/molCwater = 4.184 J/gK
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