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A balanced lever has two weights on it, the first with mass #3 kg # and the second with mass #37 kg#. If the first weight is # 9 m# from the fulcrum, how far is the second weight from the fulcrum?

What is the angle between #<1,7,2 > # and #<3,5,1> #?

How would you balance: C3H8 + O2 > CO2 + H2O?

What is the derivative of #2^sin(pi*x)#?

An atom contains 70 protons, 70 electrons, and 99 neutrons. What is the mass number?

What is the least squares regression model for the following data points?: (1,3), (2,6), (3,19), (2,7), (8,9), (10,25)

How do you graph #x + y = –2#?

Does #a_n=x^n/(n!) # converge for any x?

What is the limit of #sinx / x# as x goes to infinity?

Question #55e72

If a cup of coffee has temperature 95∘C in a room where the temperature is 20∘C,
then, according to Newton's Law of Cooling, the temperature of the coffee after t
minutes is T(x)=20+75e^(t/50). ?

How do you translate into symbols: The difference between n and 14?

What is the difference between mole and molecule?

What ions are present in NaCl, Na2CO3, MgSO4, and NH4Cl?

How do you find the Integral of #sqrt(x^2  16)/ x dx#?

What is the trigonometric form of #12 e^( ( pi)/2 i ) #?

How do you find the determinant of #((2, 3, 5), (0, 1, 3), (0, 0, 2))#?

The difference between the degree measures of two supplementary angles is 80°. What is the degree number of the larger angle?

How do you simplify #1/(2+3i)# and write in a+bi form?

A 2150 kg truck traveling north at 42 km/h turns east and accelerates to 61 km/h. (a) What is the change in the truck's kinetic energy? (b) What is the magnitude of the change in its momentum ?

How do you solve #2/(3+x) = 25#?

What is the angle between #<1 ,3,8># and #< 4,1,5>#?

How does genetics use the principles of probability?

Question #d9e88

Question #adc16

How do you implicitly differentiate #ln(xy)=xy #?

How do you evaluate #sec(18pi)#?

Question #4444b

Given #f(x) = 2x + 1#, #g(x) = 3x³ 1# how do you find f(g(x))?

Question #6dc14

What is the binomial theorem?

How do you prove #cos 3 theta = 4 cos^3 theta  3 cos theta#?

If a current of 40 mA flows through a series circuit consisting of a 0.4 µF capacitor and a resistor in series with a 4 kHz, 40 Vac source, what is the total circuit impedance?

How do you find the derivative of #lnxsqrt(x^2+1)#?

A weather rocket is launched straight up. Seconds into the flight, its velocity is 130m/s and it is accelerating at 19 m/s^2. At this instant, the rocket's mass is 59 kg and it is losing mass at the rate of 0.55 kg/s. What is the net force on the rocket?

What is needed to produce an electromagnet?

Given #f(x)=x^2+1# with domain #{2,1,0, 1,3}# what is the range?

Why can't a triangle have a right angle and an obtuse angle?

Question #eefeb

If #A= <6 ,9 ,1 ># and #B= <4 ,1 ,4 >#, what is #A*B A B#?

What is the greatest common factor of 21 and 63?

What are the asymptotes for #(x^2+4x+3)/(x^2  9)#?

A ball with a mass of #14 kg# moving at #15 m/s# hits a still ball with a mass of #17 kg#. If the first ball stops moving, how fast is the second ball moving? How much kinetic energy was lost as heat in the collision?

How do you find the derivative of #sin(x)/[1cos(x)]#?

How do you determine whether the function #f(x)=3x^5  20x^3# is concave up or concave down and its intervals?

Question #ce2b6

What type of compound is CH3CH2CH3?

What are synchronous machines?

The girl's brother stands at the edge of the Golden Gate Bridge and throws a penny upwards at 29 m/s at an angle of 34°. How long does it take the penny to fall to the water, 227m below? How far from the base of the bridge does the penny hit the water?

What is the domain and range of #y=2x6#?

How do you prove the statement lim as x approaches 4 for # (x^2) = 4# using the epsilon and delta definition?

A circle has a center at #(1 ,3 )# and passes through #(2 ,4 )#. What is the length of an arc covering #pi # radians on the circle?

How do you find the asymptotes for #f(x) = (3x + 5) / (2x  3)#?

What is acetylcholine classified as?

How do you determine if #f(x) = x^3 + x# is an even or odd function?

How do you rewrite #((a^2b^5)/c^3)^2# using a positive exponent?

Question #490a9

How do you use the second fundamental theorem of Calculus to find the derivative of given #int cos 2t dt# from x to pi/4?

What is #sqrt{sqrt3 + sqrt (3 + 8 sqrt (7 + 4 sqrt3#?

For #f(x)=2^x # what is the equation of the tangent line at #x=5#?

How do you condense #ln(1+x^9)+1/2(ln(x)ln(sin(x) #?

The cost function for a product is C(x)=0.8x^2 +120x+110.
How to find average cost over [0,600] ?

How do you find the determinant of #((1, 0, 0, 0), (sqrt3, 2, 0, 0), (0.003, 0, 3, 0), (1.432, sqrt37, pi, 1))#?

Question #a8f63

Question #f45fa

A projectile is shot from the ground at an angle of #(5 pi)/12 # and a speed of #4/9 m/s#. Factoring in both horizontal and vertical movement, what will the projectile's distance from the starting point be when it reaches its maximum height?

Is it correct to write #1^@=2pi/360^@#? Yes or no, and also why?

∥v∥=3
∥w∥=4
The angle between v and w is 1.2 radians.
How to calculate ? a) v⋅w =
,(b) ∥1v+1w∥=
, (c) ∥4v−4w∥=

What are the applications of power series in electrical engineering?

It takes 23.5 kJ of heat energy to raise the temperature of 100 g of a substance by 50°C. What is the substance?