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Zac
Questions (84)
what is the value of 4^ 2 - 2 (3 x 5 -1)?
2 answers
109 views
Please Help!!!
A cyclotron produces a beam of charged particles useful in medicine. The cyclotron accelerates charged particles
1 answer
266 views
So in class we threw an egg into a blanket and it didn't break. What would be the cause? Speed, mass, momentum, or force. It's
0 answers
272 views
Help Please!
Two cars in opposite directions were going at 50 mph before a collision. They had a head on inelastic collision,
0 answers
278 views
Help Please!
A spaceship with fuel is initially at rest at point CG. Fuel is ejected at the back to propel the payload to the
0 answers
228 views
Riddle: It’s 7:00 am. You are asleep and there is a sudden knock on the door. Behind the door are your parents, who came to
59 answers
23,253 views
think about the various conflicts in dragonwings. identify and describe one event from the novel that represents a cause and
8 answers
3,625 views
A certain pendulum on Earth has a period of 1.6 s. What would be the period of this pendulum if it were taken to another planet
1 answer
987 views
With what frequency would you have to push a child on a swing that had supporting chains that were 2.3 m long? Express your
1 answer
1,057 views
A simple harmonic oscillator has a frequency of 2.05 Hz. What will be its amplitude of oscillation if it's started from its
1 answer
807 views
What is the maximum velocity of a spring oscillator with a mass of 0.7 kg and a spring constant of 74 N/m that is released from
2 answers
457 views
A mass hung from a spring stretches the spring by 11 cm when the mass is resting at its equillibrium position. What will be the
1 answer
784 views
1) Which of the following is a characteristic of RNA splicing in Eurkaryotes?
a) Exon/intron boundaries are typically
0 answers
527 views
The sum of two numbers is 83. The difference of the two numbers is 24. Find the two numbers.
1 answer
430 views
The sum of two numbers is 83. The difference of the two numbers is 24. Find the two numbers.
1 answer
430 views
Determine the freezing point of an aqueous solution containing 10.50 g of magnesium bromide in 200.0 g of water.
2 answers
1,190 views
Differentiate: y = 3/(1-6x^4)
1 answer
558 views
A skateboarder moving at 7.18 m/s along a horizontal section of a track that is slanted upward by 48.5 ° above the horizontal
0 answers
525 views
A and B weigh 156 pounds. A and C weigh 171 pounds. How much do they each weigh if the total weight is 255 pounds?
1 answer
620 views
State the cartesian equations of two lines that make angle of 60 degrees with the line r=(1,3)+s(1,1)
1 answer
413 views
Find the scalar equation of a plane that is perpendicular to plane r=(-2,1,3)+s(0,1,1)+t(-1,0,3) and also intersects it along
1 answer
827 views
The denominator of a fraction is four more than twice the numerator. If both numerator and denominator are increased by six, the
1 answer
1,579 views
How many sulfate ions are there in 2.500 mL of 5.0 x 10-15 moles of Cr2(SO4)3?
1 answer
578 views
integers of 34
Add= Sub.= div.= multiply=
0 answers
341 views
Show that ln(4+x) is the sum of its Taylor Series for -2 <= x <= 2.
0 answers
357 views
A point charge of -4.00 is at the origin, and a second point charge of 6.00 is on the axis at = 0.850 . Find the magnitude and
0 answers
679 views
For what values of z will
(2-z)-y = 0 4x+(1+z)y = 0 have an infinite number of solutions.
1 answer
407 views
Find the parametric equations for the line that contains the point (3,1,-4) and is parallel to the line
r(t)=(1+2t)i+(-3-t)j+(5+5
0 answers
481 views
Find parametric equations for the line that is perpendicular to the plane 2x-y+3z=7 and intersects the plane when x=1 and y=1.
1 answer
566 views
Given the one point function (3,9) (in other words f(3)=9) Identify the following transformations
f(2x) -3(f(x-4))+1 f(5x+3)
0 answers
446 views
Convert r=1+3sin2x from a polar equation to a rectangular equation.
5 answers
719 views
place parenthesis so answer = 14.
2x2+3 to 2nd power-4+3x5.
1 answer
469 views
A 140 g, 90.0 mph fastball comes across the plate very nearly horizontally and is batted at 90.0 mph at a 30.0 O angle (above
0 answers
470 views
A 125 kg flatbottomed boat is floating along at 5.0 m/s, headed east. Sally Sue, standing at one
end of the boat, starts to walk
0 answers
450 views
A 125 kg flatbottomed boat is floating along at 5.0 m/s, headed east. Sally Sue, standing at one
end of the boat, starts to walk
0 answers
975 views
In the Daytona 500 car race in Daytona, FL, a curve in the oval track has a radius of 316 m (near
the top of the curve) and is
1 answer
917 views
A popular carnival ride consists of a large, round room that rotates fast enough that any person
standing against the wall will
1 answer
688 views
The Hubble Space Telescope (HST) has recorded evidence of a black hole at the center of the M87
galaxy. Using Doppler data, it's
1 answer
516 views
Assume the Earth is a perfect sphere of radius 6,400 kilometers. Find the weight of a 75.0 kg
person at the North pole. Find the
1 answer
563 views
Starting from rest, a 6.70 kg object falls through some liquid and experiences a resistive (drag)
force that is linearly
2 answers
1,226 views
A car with fuzzy dice hanging from the rear view mirror by a single string drives along at a
constant 25.0 m/s. a) If the dice
1 answer
1,172 views
Consider a spider walking from the top of a (stationary) beach ball. (Let that angular position =
0 O .) The spider finds it
1 answer
481 views
A block of mass m = 2.00 kg rests on the left edge of a block of mass M = 8.00 kg. The
coefficient of kinetic friction between
2 answers
8,118 views
Mass 1 and mass 2 are connected as shown by a massless, non-stretch rope that passes over a massless, frictionless pulley. The
0 answers
807 views
A 12.0 kg block sits on a frictionless table. On top of this block is placed a 5.00 kg block. The coefficient of static friction
0 answers
730 views
A 90.0 kg block and a 40.0 kg block are connected by a rope that passes through two (frictionless, massless) pulleys as shown.
0 answers
636 views
A box starting from rest, slides down an incline which makes an angle of θ above the horizontal. The incline has a maximum
1 answer
649 views
An ice skater slides (without pushing) across a frozen pond for 25.0 m before coming to a stop. If the coefficient of kinetic
1 answer
548 views
A trough has a trapezoidal cross section with a height of 5 m and horizontal sides of width 2.5 m and 5 m. Assume the length of
0 answers
924 views
Sally Sue is atop a 10.0 m high platform where she will drop an apple straight down. On the ground
below, and 20.0 m
2 answers
634 views
Seawater has a bulk modulus of 2.34×109 N/m2. Its density at 5°C is 1030 kg/m3. What is the speed of sound through seawater at
1 answer
764 views
List all possible rational zeros of each function.
f(x)=4x^5+4x^2-9 Find all rational roots of each function f(x)=2x^3+x^2+8x+4
1 answer
581 views
find all the zeros of each function.
1. f(x)=2x^4-13x^3-34x^2+65x+120 2. f(x)=4x^4+19x^2-63
0 answers
494 views
0.200 moles of NaF are added to 1L 2.0 molar HF. The Ka = 7.2*10^-4. What is the pH?
a) 2.14 b) 6.70 c) 10.80 d) 3.00 e) 7.00 I
1 answer
467 views
50.0mL of 0.1 molar NaOH is added with 50.0mL of 0.1 molar CH3COOH. The Ka = 1.8*10^-5. what is the pH of the solution?
a) 7.00
1 answer
480 views
0.200 moles of NaF are added to 1L 2.0 molar HF. What is the pH?
a) 2.14 b) 6.70 c) 10.80 d) 3.00 e) 7.00
1 answer
418 views
which will become a buffer in 1L of H2O?
a) 0.3 mole KOH & 0.3 mole HBr b) 0.5 mole NH3 & 0.5 mole HCl c) 0.2 mole NaCl & 0.3
1 answer
686 views
50.0mL of 0.01M Ba(OH)2 is added to 150.0mL of 0.01M HNO3. What is the new pH of the solution?
1 answer
795 views
5. Scores on a recent national statistics exam were normally distributed with a mean of 80 and a standard deviation of 6.
a. What
2 answers
3,766 views
A hawk flies in a horizontal arc of radius
15.7 m at a constant speed of 3.8 m/s. Find its centripetal acceleration. Answer in
0 answers
766 views
How long does it take a 23 kW steam engine to do 8.8 x 10^7 J of work?
1 answer
456 views
Express the given quantity in a single logarithm.
ln(a + b) + ln(a - b) - 2 ln c
1 answer
1,013 views
How many possible outcomes are there for 15 coins tossed simultaneously?
1 answer
578 views
An abiotic factor that starts with c and the clue is soil type. So what is a soil type that starts with C?
1 answer
829 views
A 86.0-kg man is riding an escalator in a shopping mall. The escalator moves the man at a constant velocity from ground level to
1 answer
657 views
If Sally can paint a house in 4 hours, and John can paint the same house in 6 hour, how long will it take for both of them to
1 answer
707 views
If Sally can paint a house in 4 hours, and John can paint the same house in 6 hour, how long will it take for both of them to
4 answers
1,118 views
what events led to u.s. expansion during 1895-1920?
1 answer
430 views
Which binomial is a factor of f(x) = x4 - 27x2 -14x + 120?
(x-4) (x-2) (x + 5) (x + 6)
2 answers
1,342 views
Which binomial is a factor of f(x) = x4-27x2-14x + 120?
1 answer
490 views
Factor x3 4x2 3x + 18 = 0, given that 3 is a zero.
4 answers
819 views
According to the rational root theorem, which is not a possible rational root of x3 + 8x2 x 6 = 0?
5 answers
749 views
25 ml HCl x 1L/1000mL x .200HCl/1L = .005 mol HCl.
Using the balanced equation from this, how many moles of NaOh will you need to
1 answer
577 views
0.2 in extended form
1 answer
395 views
explain why a strong acid or base can denature an enzyme
explain how varying pH influenced the rate of the catalase reactions and
0 answers
803 views
Explain open and closed system with respect to equilibrum.
1 answer
414 views
what effect does a catalyst have on..
a) energy of the reactants b) enthalpy change of the reaction
1 answer
502 views
What are the products of nitrogen dioxide and methane?
0 answers
324 views
If you have a graph with the x-axis as the days of the month, and the y-axis as stock price....
Then, how to do you figure out
1 answer
362 views
Why would people choose an extremist form of government(either ultraliberal or ultraconservative)to rule over them?
1 answer
301 views
Please help i would highly appreciate it
3 answers
304 views
Why were Wilson's 14 Points not accepted by other members of the paris peace conference?
2 answers
472 views
What were the goals of "The Big Four"?
2 answers
367 views
For the alcohol functional group, why is the "H" not acidic and the "OH" not basic?
1 answer
594 views
