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Joey
Questions and answers by
Joey
, page 2
Questions (252)
In the figure below, a constant horizontal force Fapp of magnitude 17 N is applied to a wheel of mass 8 kg and radius 0.70 m.
1 answer
661 views
In the figure below, a solid cylinder of radius 12 cm and mass 11 kg starts from rest and rolls without slipping a distance L =
2 answers
761 views
The figure below gives the speed v versus time t for a 0.510 kg object of radius 5.90 cm that rolls smoothly down a 30° ramp.
1 answer
1,278 views
A 1000 kg car has four 20 kg wheels. When the car is moving, what fraction of its total kinetic energy is due to rotation of the
2 answers
1,314 views
A uniform solid sphere rolls down an incline.
(a) What must be the incline angle if the linear acceleration of the center of the
3 answers
3,143 views
A 100 kg hoop rolls along a horizontal floor so that the hoop's center of mass has a speed of 0.230 m/s. How much work must be
2 answers
948 views
An automobile traveling at 50.0 km/h has tires of 100.0 cm diameter.
(a) What is the angular speed of the tires about their
2 answers
1,222 views
At liftoff, a rocket has a mass of 2x10^6 kg. It expels hot gas which provides an upthrust of 3x10^7.
Find the initial
2 answers
942 views
I am doing a Catalase lab (Enzymes)
I don't understand this question: What are the controls in the experiment?
3 answers
638 views
Can someone help me solve this question? I've read the book, notes, I still don't get it...
Simply each of the following. a)
5 answers
371 views
A standard deck of cards has had all the face cards (Jacks, queens, and kings) removed so that only the ace through ten of each
6 answers
3,044 views
Name the intermediates of the Calvin cycle...
I am thinking it is 1) Carbon fixation 2) Reduction 3) Regeneration But I believe
1 answer
341 views
Can someone help me out with project for Data Management. I need some topics that I could use for my thesis/hypothesis (with a
1 answer
417 views
Can someone help me out with project for Data Management. I need some topics that I could use for my thesis/hypothesis (with a
2 answers
766 views
1- Determine the [OH-] and pH of a solution that is .250 M in HCO-3
2- Calculate the [H3O+] and pH of each polyprotic acid
1 answer
1,129 views
A 0.203 kg plastic ball moves with a velocity of 0.30 m/s. It collides with a second plastic ball of mass 0.106 kg, which is
1 answer
912 views
Delta H Vap (h20)=40.7Kj/mol
How much water vaporized with 155Kj/mol?
2 answers
472 views
It is true that ______
a) few plants grow well around water b) plants are better able to seek water than are animals c) water
2 answers
528 views
-(2x - 2) +3 - x=20
1 answer
228 views
Solve for Matrix D
3 2 -5] [7 0 1 [2 0 8 + D = -4 3 -2] How to solve this?
2 answers
856 views
Expand the following binomials to look for patterns when expanding binomials. Try to find a pattern that will allow you to
1 answer
446 views
A construction company wants to build a rectangular enclosure with an area of 1000 square feet by fencing in three sides and
3 answers
5,904 views
If you had a computer that could track the number of cereal boxes on the shelf of a market continuously over a 1-week period
2 answers
633 views
This is a question that deals specifically with WebWork.
Here is the question: Write the set of points from -2 to 4 but excluding
5 answers
3,392 views
Find a formula for a transformation of the complex plane that carries the disk {z: |z-5| < 3} to the disk {z: |z-2| < 8}
1 answer
331 views
A manager states that in his factory, the mean number of days per year missed by his employees is less than the national mean of
2 answers
686 views
What are some geographic features of the western states (California, Nevada, Oregon and Washington) besides mountains and
2 answers
499 views
B is the midpoint of segment AC.
AB= 5X and BC =3X+4 find AB, BC and AC
3 answers
3,198 views
when heat and change of temperature happens this occurs what?
6 answers
297 views
"Redskin" was originally a term for
1 answer
256 views
Find a 4 degree polynomial having zeros -6,-3,2 and 6 and the coefficient of x^4 equal 1
The "coefficient of x^4 equal 1" is
3 answers
2,033 views
the tension in a string from which a 6.5 kg box is suspended in an elevator is equal to 52 N. what would be the magnitude of
1 answer
428 views
how would you differentiate (-(x^2+1)^{1/2))/(1/2)+ln(x+(x^2+1)^(1/2)
1 answer
295 views
an isosceles triangle has a perimeter of 60in. the congruent sides measure (2x+9)cm. the length of the third side is 3xcm. what
1 answer
424 views
Can someone help with me this question?
1. Lea spent $25 of the money she saved. She still has 60% of her money left. How much
4 answers
1,318 views
How many electrons and orbitals are represented by 2s2
1 answer
383 views
How many moles are found in 25 grams of hydrogen chloride gas
2 answers
750 views
An isosceles triangle is inscribed in a circle. The shortest side is the base which is 16 cm long. If the radius of the circle
2 answers
1,125 views
A Styrofoam bucket of negligible mass contains 1.60 kg of water and 0.425 kg of ice. More ice, from a refrigerator at -14.8
1 answer
654 views
A Styrofoam bucket of negligible mass contains 1.60 kg of water and 0.425 kg of ice. More ice, from a refrigerator at -14.8
3 answers
1,887 views
Why is The Persian Gulf War so important to the United States?
3 answers
566 views
Find dy/dx give the relation
(x^2/9)+(y^2/16)=1 Thank you!!
1 answer
298 views
A hiker walks 10.0 km[NE], 5.0 km[W], and then 2.0 km[S] in 2.5 h.
(a) What is the hiker's displacement? (b) In what direction
4 answers
1,766 views
What did the author intend to do with Adventures of Huckleberry Finn?
Keep in mind I mean the AUTHOR (Mark Twain) not Huck...I'm
7 answers
568 views
what Manga should I draw for art class?
2 answers
621 views
Florence who weighs 120lb stands on a bathroom scale in an elevator. What will she see the scale read when the elevator is
3 answers
951 views
I am doing a research paper on the opium wars in China. Any suggestions for key points for thesis statement?
6 answers
405 views
If:
0 = f(1) = a+b+c+d 2 = f(-2) = -8a+4b-2c+d 0 = f'(1) = 3a+2b+c 0 = f'(-2) = 12a-4b+c "since we now have four equations and
3 answers
705 views
A file cabinet weighing 1500 N is at rest on the floor. The coefficient of static friction between the floor and the cabinet is
1 answer
473 views
A ball is thrown straight up in the air at an initial speed of 30 m/s. Using conservation of energy, find the maximum height of
1 answer
433 views
Is it possible to have a figure an area of 9 square units and a perimeter of 30? If not, why? (PS I don't think it is possible.)
5 answers
366 views
Stuck... can't seem to use l'hopitals, nor can I use logrithmic differentiation...
lim (e^(2x)+ x)^(1/3x) x->0+ Thank you so much
7 answers
356 views
What is electrolysis and what is the purpose of it? Is it dangerous?
2 answers
540 views
A bicycle wheel has a diameter of 57.7 cm
and a mass of 2.66 kg. The bicycle is placed on a stationary stand and a resistive
1 answer
1,175 views
The four tires of an automobile are inflated to
a gauge pressure of 1.7 × 10 5 Pa. Each tire has an area of 0.023 m2 in contact
1 answer
514 views
Suppose that the 1.3 km span of the golden gate bridge had no expansion joints. Calculate how much longer the bridge would be if
4 answers
4,839 views
A local grocery store wants to estimate the mean daily number of gallons of
milk sold to customers. Assume the number of gallons
3 answers
2,212 views
How long will a skateboarder be out if they decide to travel for 654 meters with a velocity of 1.2 m/s
1 answer
473 views
An object in simple harmonic motion has an amplitude of 0.202 m and an oscillation period of 0.620 s. Determine the maximum
1 answer
845 views
A 0.20-kg object is attached to the end of an ideal horizontal spring that has a spring constant of 120 N/m. The simple harmonic
1 answer
719 views
An object on a vertical spring oscillates up and down in simple harmonic motion with an angular frequency of 25.1 rad/s.
2 answers
1,210 views
When responding to sound, the human eardrum vibrates about its equilibrium position. Suppose an eardrum is vibrating with an
2 answers
760 views
An object on a vertical spring oscillates up and down in simple harmonic motion with an angular frequency of 25.1 rad/s.
1 answer
739 views
A hand exerciser utilizes a coiled spring. A force of 86.9 N is required to compress the spring by 0.0231 m. Determine the force
2 answers
518 views
A 55.0kg cheerleader uses an oil-filled hydraulic lift to hold four 130kg football players at a height of 1.20m. If her piston
1 answer
1,008 views
I am 3/7 of a chicken,2/3 of a cat and 2/4 of a goat. What am I?
5 answers
462 views
Mountain officials want to build a new ski lift from B to C as shown in the figure below. The distance from A to C is 1480 feet.
5 answers
4,193 views
The deformation y(t) of heart muscle from its rest position after t seconds can be modelled as a spring-mass system, described
2 answers
485 views
Find csc(theta), tan (theta), and cos (theta), where theta is the angle shown in the figure.
Give exact values, not decimal
3 answers
2,212 views
A 250g wood block firmly attached to a horizontal spring slides along a table with a coefficient of friction of 0.40. A force of
2 answers
535 views
A force of 20 n gives a ball an acceleration of 4.0 m/s3 on a lever frictionless surface. what is the mass of the ball?
2 answers
498 views
Five students measure their height using different units. Andrew is 176 cm, Brittney is 5'4", Calvin is 1.8 yards, Don is 54
2 answers
995 views
A chemist mixes 5.216 g of potassium permanganate, 2.318 g of ethanol, and excess sulfuric acid. These chemicals react as
4 answers
547 views
Assume that the width of your body (across your shoulders) is 50.8 cm inches and the depth of your body (chest to back) is 25.0
5 answers
851 views
A 55 uL of hexane is injected in a mass spectrometer. how many protons are in the 55 uL injection? (density Hexane= 0.6548 g/mL)
4 answers
450 views
Direct reaction of solid iodine (I2) and gaseous chlorine (Cl2) produces an iodine chloride,(IxCly), a bright yellow solid.
3 answers
3,159 views
A light is hung 15 ft above a straight horizontal path. If a man 6 ft tall is walking away from the light at the rate of 5
4 answers
1,892 views
Assuming that the resolution of an electron microscope is equal to the deBroglie wavelength of the electrons used, what is the
4 answers
1,400 views
The graph shows the temperature versus time relationship for 2 kg of particular substance. The substance is in the solid state
2 answers
680 views
The graph shows the temperature versus time relationship for 2kg of particular substance. The substance is in the solid state at
4 answers
547 views
The acidic H is almost always attached to an Oxygen Why is that?
1 answer
426 views
Write 4logb(X)-1/3logb(y)+2logb(z)as a single logarithm
Its log base b.
3 answers
1,788 views
Newcastle auto plc has a current cash flow of 4.4 million and pays no dividends. The Present value of the company ´s future
1 answer
495 views
Newcastle auto plc has a current cash flow of 4.4 million and pays no dividends. The Present value of the company ´s future
2 answers
536 views
A 4.12 kg mass undergoes an acceleration along both the x and y directions. Ax = -2.60 m/s2 and Ay = 3.50 m/s2. Find the
1 answer
409 views
The management of the UNICO department store has decided to enclose an 870 ft2 area outside the building for displaying potted
3 answers
1,107 views
An object with a net charge of 20 µC is placed in a uniform electric field of 627 N/C, directed vertically. What is the mass of
1 answer
684 views
What is the pH, pOH, [H+] and [OH-] for a solution that contains 5.25 x 10^-3 moles of HCl dissolved in 3.25 L of water?
I was
4 answers
1,350 views
How come lead is denser than copper though more copper atoms can fit into a same size cube than lead atoms can?
2 answers
770 views
Fill in the chart
(Numbers correspond to each other[I.E 1 in 1st group connects with 1in 2nd]) Subatomic particle found 1.Proton
4 answers
835 views
If I were to explain to someone about how to find a charge of an element, would anyone agree with this:
The charge of an element
2 answers
493 views
Noble gases are the least reactive because they have a perfect 8 valence electrons. Or is it because they do not have any
3 answers
900 views
Please show work for
Determine the final end (final) value of n in a hydrogen atom transition, if electron starts in n = 1 and
5 answers
9,945 views
Differentiate.
g(x) = 5e^x√x
4 answers
811 views
The volume V of a growing spherical cell is
V =4/3πr^3, where the radius is measured in micrometers (1 µm = 10^−6m). Find the
3 answers
1,052 views
The quotient of two proper fractions is less than 1
1 answer
410 views
A cyclist rides at an average speed of 18 miles per hour. if she wants to bike 212km, how long in hours must she ride?
What I
4 answers
4,792 views
ON is the vertical plumb line.A horizontal force F applies at M to push the piston at O and N,with the help of rods MO,MN.The
1 answer
464 views
A ladder is placed against the side of the house. The top of the ladder is 12 ft above the ground. The base wof the ladder is
4 answers
616 views
I need help please.
11 1/9% of what number is 900?
1 answer
333 views
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