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Zac

Questions (84)

what is the value of 4^ 2 - 2 (3 x 5 -1)?
1. 2 answers
2. 137 views
Please Help!!!A cyclotron produces a beam of charged particles useful in medicine. The cyclotron accelerates charged particles
1. 1 answer
2. 298 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
1. 0 answers
2. 293 views
Help Please!Two cars in opposite directions were going at 50 mph before a collision. They had a head on inelastic collision,
1. 0 answers
2. 311 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
1. 0 answers
2. 261 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
1. 59 answers
2. 23,336 views
think about the various conflicts in dragonwings. identify and describe one event from the novel that represents a cause and
1. 8 answers
2. 3,674 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. 1 answer
2. 1,046 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. 1 answer
2. 1,094 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. 1 answer
2. 849 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
1. 2 answers
2. 484 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. 1 answer
2. 825 views
1) Which of the following is a characteristic of RNA splicing in Eurkaryotes?a) Exon/intron boundaries are typically
1. 0 answers
2. 567 views
The sum of two numbers is 83. The difference of the two numbers is 24. Find the two numbers.
1. 1 answer
2. 459 views
The sum of two numbers is 83. The difference of the two numbers is 24. Find the two numbers.
1. 1 answer
2. 451 views
Determine the freezing point of an aqueous solution containing 10.50 g of magnesium bromide in 200.0 g of water.
1. 2 answers
2. 1,232 views
Differentiate: y = 3/(1-6x^4)
1. 1 answer
2. 584 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
1. 0 answers
2. 551 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. 1 answer
2. 659 views
State the cartesian equations of two lines that make angle of 60 degrees with the line r=(1,3)+s(1,1)
1. 1 answer
2. 447 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. 1 answer
2. 883 views
The denominator of a fraction is four more than twice the numerator. If both numerator and denominator are increased by six, the
1. 1 answer
2. 1,645 views
How many sulfate ions are there in 2.500 mL of 5.0 x 10-15 moles of Cr2(SO4)3?
1. 1 answer
2. 610 views
integers of 34Add= Sub.= div.= multiply=
1. 0 answers
2. 359 views
Show that ln(4+x) is the sum of its Taylor Series for -2 <= x <= 2.
1. 0 answers
2. 390 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
1. 0 answers
2. 727 views
For what values of z will(2-z)-y = 0 4x+(1+z)y = 0 have an infinite number of solutions.
1. 1 answer
2. 432 views
Find the parametric equations for the line that contains the point (3,1,-4) and is parallel to the liner(t)=(1+2t)i+(-3-t)j+(5+5
1. 0 answers
2. 523 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. 1 answer
2. 616 views
Given the one point function (3,9) (in other words f(3)=9) Identify the following transformationsf(2x) -3(f(x-4))+1 f(5x+3)
1. 0 answers
2. 479 views
Convert r=1+3sin2x from a polar equation to a rectangular equation.
1. 5 answers
2. 757 views
place parenthesis so answer = 14.2x2+3 to 2nd power-4+3x5.
1. 1 answer
2. 502 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
1. 0 answers
2. 513 views
A 125 kg flatbottomed boat is floating along at 5.0 m/s, headed east. Sally Sue, standing at oneend of the boat, starts to walk
1. 0 answers
2. 487 views
A 125 kg flatbottomed boat is floating along at 5.0 m/s, headed east. Sally Sue, standing at oneend of the boat, starts to walk
1. 0 answers
2. 1,019 views
In the Daytona 500 car race in Daytona, FL, a curve in the oval track has a radius of 316 m (nearthe top of the curve) and is
1. 1 answer
2. 977 views
A popular carnival ride consists of a large, round room that rotates fast enough that any personstanding against the wall will
1. 1 answer
2. 725 views
The Hubble Space Telescope (HST) has recorded evidence of a black hole at the center of the M87galaxy. Using Doppler data, it's
1. 1 answer
2. 550 views
Assume the Earth is a perfect sphere of radius 6,400 kilometers. Find the weight of a 75.0 kgperson at the North pole. Find the
1. 1 answer
2. 597 views
Starting from rest, a 6.70 kg object falls through some liquid and experiences a resistive (drag)force that is linearly
1. 2 answers
2. 1,284 views
A car with fuzzy dice hanging from the rear view mirror by a single string drives along at aconstant 25.0 m/s. a) If the dice
1. 1 answer
2. 1,227 views
Consider a spider walking from the top of a (stationary) beach ball. (Let that angular position =0 O .) The spider finds it
1. 1 answer
2. 529 views
A block of mass m = 2.00 kg rests on the left edge of a block of mass M = 8.00 kg. Thecoefficient of kinetic friction between
1. 2 answers
2. 8,188 views
Mass 1 and mass 2 are connected as shown by a massless, non-stretch rope that passes over a massless, frictionless pulley. The
1. 0 answers
2. 862 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
1. 0 answers
2. 777 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.
1. 0 answers
2. 699 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. 1 answer
2. 698 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. 1 answer
2. 589 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
1. 0 answers
2. 989 views
Sally Sue is atop a 10.0 m high platform where she will drop an apple straight down. On the groundbelow, and 20.0 m
1. 2 answers
2. 673 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. 1 answer
2. 804 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. 1 answer
2. 617 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
1. 0 answers
2. 526 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. 1 answer
2. 503 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. 1 answer
2. 506 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. 1 answer
2. 464 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. 1 answer
2. 754 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. 1 answer
2. 843 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
1. 2 answers
2. 3,812 views
A hawk ﬂies in a horizontal arc of radius15.7 m at a constant speed of 3.8 m/s. Find its centripetal acceleration. Answer in
1. 0 answers
2. 812 views
How long does it take a 23 kW steam engine to do 8.8 x 10^7 J of work?
1. 1 answer
2. 488 views
Express the given quantity in a single logarithm.ln(a + b) + ln(a - b) - 2 ln c
1. 1 answer
2. 1,074 views
How many possible outcomes are there for 15 coins tossed simultaneously?
1. 1 answer
2. 611 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. 1 answer
2. 864 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. 1 answer
2. 690 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. 1 answer
2. 774 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. 4 answers
2. 1,164 views
what events led to u.s. expansion during 1895-1920?
1. 1 answer
2. 456 views
Which binomial is a factor of f(x) = x4 - 27x2 -14x + 120?(x-4) (x-2) (x + 5) (x + 6)
1. 2 answers
2. 1,380 views
Which binomial is a factor of f(x) = x4-27x2-14x + 120?
1. 1 answer
2. 525 views
Factor x3 4x2 3x + 18 = 0, given that 3 is a zero.
1. 4 answers
2. 850 views
According to the rational root theorem, which is not a possible rational root of x3 + 8x2 x 6 = 0?
1. 5 answers
2. 791 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. 1 answer
2. 618 views
0.2 in extended form
1. 1 answer
2. 421 views
explain why a strong acid or base can denature an enzymeexplain how varying pH influenced the rate of the catalase reactions and
1. 0 answers
2. 867 views
Explain open and closed system with respect to equilibrum.
1. 1 answer
2. 442 views
what effect does a catalyst have on..a) energy of the reactants b) enthalpy change of the reaction
1. 1 answer
2. 531 views
What are the products of nitrogen dioxide and methane?
1. 0 answers
2. 355 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. 1 answer
2. 390 views
Why would people choose an extremist form of government(either ultraliberal or ultraconservative)to rule over them?
1. 1 answer
2. 321 views
Please help i would highly appreciate it
1. 3 answers
2. 327 views
Why were Wilson's 14 Points not accepted by other members of the paris peace conference?
1. 2 answers
2. 518 views
What were the goals of "The Big Four"?
1. 2 answers
2. 388 views
For the alcohol functional group, why is the "H" not acidic and the "OH" not basic?
1. 1 answer
2. 631 views

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