07/24/17

Exponential growth
During a research experiment, it was found that the number of bacteria in a culture grew at a rate proportional to its size. At 9 am there were 2,000 bacteria present in the culture. At noon, the... more
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07/24/17

Do alpha rays have higher frequency than gamma rays?
Alpha rays are more energetic than gamma rays, so shouldn't they have a higher frequency than gamma rays, too since hf=E?  
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07/24/17

Calculus Question
Find the derivative of y = cos3sin22x.   Help?!
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07/24/17

Calculus Question
Use a calculator to approximate the slope of the tangent line drawn to the graph of y = 2sinx + cosx at x = 4.2. Round your answer to 2 decimal places.
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07/24/17

Expand:(√3x-√5y)^2
it is a question from the chapter algebraic expressions 
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07/24/17

Calculus Question
Find the derivative and simplify:   y = 3sin4(2-x)-1   Help?!
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07/23/17

Slope intercept
write the slope intercept form if possible of the equation of the line perpendicular to the line x= -3 and containing the point (-7,-2)
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07/23/17

if you have two equations 8a+5c=177.50 and 12a+6c=255.00. using the substitution method what is the price of one adult ticket and one child ticket
I need the price of one adult ticket and the price of one childs ticket
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07/23/17

the mass of 5 moles of a molecule "X" is 90 gram.
<Calculate the molar mass and empirical formula of the molecule and what is the name of "X".
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07/23/17

two point charges 4MC&9MC are seperated by 50CM find the potential at the point between them where the field is zero.
F=1/4π∈ Q/r2 F1=F2
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07/23/17

On a p-v plane for a pure substance in superheated region, the slopes of constant temperature lines are?
The choices are... a) positive b) negative c) zero d) infinite
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07/23/17

The negation of proposition
The negation of proposition "x≠0 and y≠0" is  "x[blank]0, [blank], y[blank]0"   Please fill in the blanks. Also, could you explain what negation of proposition is? I am not a native English... more
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07/22/17

The sun produces 9.5x10^33 He atoms every second. Calculate the amount of energy produced by the sun each second.
The sun produces 9.5x1033 He atoms every second. Calculate the amount of energy produced by the sun each second.
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07/22/17

A hydrogen bomb releases 1x10^17 joules. How many bomb explosions are equal to the sun's energy output each second?
A hydrogen bomb releases 1x1017 joules. How many bomb explosions are equal to the sun's energy output each second?
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07/22/17

what is the value of x in |-6|=x
selct one: a. 6 and -6 b. -6 c. 0 d.6  
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07/22/17

if the wheels of a train make 16 revolutions when it rolls a distance of 60 feet, what is the radius of the wheel
math question
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07/22/17

Indeterminate Forms and L'Hospital's Rule
Find the limit as x approaches 1 from the right    x^(1/(x-1))
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07/22/17

is there any equation to get the relationship between hydrogen comsumption rate and output voltage of a fuel cell
i am wondering if there any equation to get the relationship between hydrogen consumption rate and output voltage of a fuel cell. for example : To get like 12 volts, how much hydrogen need to be... more
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07/21/17

Which of the following equations would be set up to solve in the graphing calculator as described below? y1=7^-3x;y2=6 Find where the graph of y1 is above the
graph of y2   1. 7^-3x>6 2. 7^-3x<6 3. 7^-3x>=6 4. 7^-3x<=6
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07/21/17

How many liters of pure water must be added to 40 liters of a 30% alcohol solution to make a 20% alcohol solution?
Question dealing with liters
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07/21/17

question is below please answer asap
A 3400 kg plane flying at a constant speed of 170 m/s is to do a vertical loop. What is the radius of the loop if the pilot feels three times his normal weight when he is at the top of the loop?
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07/21/17

question is below please answer asap
At what angle relative to the horizontal should a 52 m curve be banked if the road is covered with ice (no friction) to prevent the car from slipping when traveling at 12 m/s? (use g = 9.8 m/s2)
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07/21/17

five dollars less than two times Chris' pay is at most $124
 this is a inequality probleem and im having toruble 
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07/21/17

Convert each angle from radians to degrees: -7(pi)/3
basic concept 
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07/21/17

Thermodynamic properties are macroscopic coordinates significant only for systems existing in states of ?
The choices are... a) Thermal Equilibrium b) Mechanical Equilibrium c) Chemical Equilibrium d) Thermodynamic Equilibrium
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