Total # Posts: 3,269
11. Read the following sentence from The Balek Scales. My grandfather was the first person bold enough to test the justice of the Baleks, the family who lived in the chateau and drove two carriages, who always maintained one boy from the village while he studied ...
December 6, 2016
A Syringe is filled with a solution of viscosity n=1.75x10^-3 pa s. The plunger of syringe has cross sectional area 9 x 10^-5 m^2. The needle has length 30mm and internal radius 3 x 10^-4 m. Intravenous pressure in patient is 2.0 kPa. What force must be applied to plunger of ...
December 6, 2016
Tanya and Greg are going skiing. Tanya is a seasoned skier while Greg is a novice, he only skied once before. They have a map that provides the coordinates for the top and bottom of each path. Tanya wants to ski the most challenging path while Greg wants to start off with an ...
November 22, 2016
There are five different sizes of wood planks used to build a deck. Before starting the project you must compare them and put them in ascending order. 3 ½ ft. 11/3 ft. 3.55 ft. 2.9 ft. 4.1 ft. Help plz.
November 22, 2016
One mole of solid NH4Cl (s) isvheated in a closed box to decompose it partially according to the following reaction: NH4Cl (s) <=> NH3 (g) +HCl (g) A) calculate Kp of the above system at the temperature of the experiment if the partial pressure of ammonia at ...
November 9, 2016
One mole of solid NH4Cl (s) isvheated in a closed box to decompose it partially according to the following reaction: NH4Cl (s) <=> NH3 (g) +HCl (g) A) calculate Kp of the above system at the temperature of the experiment if the partial pressure of ammonia at equilibrium ...
November 9, 2016
6. What is the only official role of the vice president? A. Lead the national committee on the president's party. B. Organize presidential commissions. C. Preside over the Senate. D. Vote in case of a tie in the Supreme Court. 7. What best describes a faithless elector? A...
November 8, 2016
1. A family is building a circular fountain in the backyard. The yard is rectangular and measures 14x by 19x and the fountain is going to be circular with a radius of 6x. Once the fountain is built, what will be the area of the remaining yard. A. 230πx^2 B. 230x^2 C. 266x...
October 25, 2016
A 150L water heater is set to a cutoff temperature of 49 degrees C and that the incoming water is at 298K, calculate the energy in kJ needed to get this 150L water to it's maximum temperature. Please help!
September 25, 2016
One proposed project to help restore Louisiana's wetlands is to backfill canals that were built for access to and transportation of oil from the coastal area. why might scientists first want to build and study a model of their proposed project? Help!!
September 22, 2016
How did China become a feudal state under the Zhou? A.The Shang shared regional power over lands with the Zhou. B.Warlords overran regions and set up their own kingdoms.* C.The Zhou awarded control over lands to their supporters. D.Groups of regional villages requested Zhou ...
September 19, 2016
A transformer has 60 turns in the primary and 1200 turns in secondary.if the primary voltage is 500 V what will be the secondary voltage be? What will the current be if the primary if the secondary carries 2.0 A
September 18, 2016
A family has 4 children. A tree diagram or systematic list can be used to show how many ways the children could have been born, from first born to last born. Determine how many ways the family could have had one boy and 3 girls.
September 4, 2016
A 100-g chunk of 72 ∘C iron is dropped into a cavity in a very large block of ice at 0∘C. What is the mass of ice that melts. (The specific heat capacity of iron is 0.11 cal/g⋅∘C.).
July 4, 2016
Many people mistakenly believe that the astronauts who orbit Earth are "above gravity." Earth's mass is 6×1024kg, and its radius is 6.38×106m (6380 km). Use the inverse-square law to find a height above Earth's surface at that the force of gravity...
June 21, 2016
A penny on its side moving at speed v slides off the horizontal surface of a table a vertical distance y from the floor. If the speed is 3.1 m/s and the coffee table is 0.30 m tall, find the distance the coin lands from the base of the table. (Use g=9.8m/s2.).
June 21, 2016
A base of a solid is the region bounded by y=e^-x, the x axis, the y axis, and the line x=2. Each cross section perpendicular to the x-axis is a square Find the volume of the solid
June 2, 2016
If rectangle ABCD has vertices A(6, 2), B(2, 2), and C(0, 6), explain how to find the coordinate for the fourth vertex. Then describe how to verify that the angles of ABCD are right angles.
May 24, 2016
as the permeability of a material is the ratio of the magnetic field strength and the magnetic flux, could the permeability of the material be multiplied by the magnetic field strength in order to calculate the flux?
May 22, 2016
7 g bullet is ﬁred into a 124 g block that is initially at rest at the edge of a frictionless table of height 1.3 m. The bullet remains in the block, and after impact the block lands 2.2 m from the bottom of the table. Find the initial speed of the bullet. The ...
May 7, 2016
A typical red blood cell subtends an angle of only 1.7×10−5 rad when viewed at a person's near-point distance of 25 cm. Suppose a red blood cell is examined with a compound microscope in which the objective and eyepiece are separated by a distance of 13.0 cm . ...
April 22, 2016
Find the minimum aperture diameter of a camera that can resolve detail on the ground the size of a person (1.5 m ) from an SR-71 Blackbird airplane flying at an altitude of 26 km . (Assume light with a wavelength of 470 nm .) I got 570 mm which is wrong
April 21, 2016
Emily fills a container with 6cubes. Each cube has an edge length of 3cm. The container is in the shape of a right rectangular prism. What is the volume of the container in cubic cm
April 18, 2016
check my answers please
1.)order the group of quadratic fractions from widest to narrowest graph. y=3x^2;y=5x^2;y=7x^2 a.)y=3x^2;y=5x^2;y=7x^2 b.)y=7x^2;y=5x^2;y=3x^2 c.)y=3x^2;y=7x^2;y=5x^2*** d.)y=2x^2;y=7x^2;y=3x^2 2.)the area of a play ground is 234yd^2. the width of the playground is 5 yard ...
April 12, 2016
Math Check my Answers please ?
1.)if an object is dropped from a height of 144 ft the function h(t)=-16t^2+144 gives the height of the object after t seconds. when will the object hit the ground? a.)1.5 seconds b.)3 seconds *** c.) 6 seconds d.)9 seconds 2.) the area of a play ground is 64 square yards. the...
April 12, 2016
Please help ! 1.)a catapult launches a boulder with an upward velocity of 122 feet per second. the height of the boulder, h, in feet after t seconds is givin by the function h(t)=-16t^2+122t+10. what is the boulders maximum height ? and how long does it take the boulder to ...
April 11, 2016
A survey revealed that 44% of movie goers will eat some amount of popcorn during a movie. If the next 17 movie goers are asked if they will eat popcorn during the next movie they attend, what is the probability that at least 8 will say they will eat popcorn during the next ...
March 19, 2016
The quotient for 20÷1/4 is 5. It wants to know which expression has the same quotient as 20÷1/4. A.1/2÷40 B.1/4÷20 C.15÷1/5 D.6÷1"10 None of these have the quotient of 5. So what are we doing wrong cause none have the choice of ...
March 17, 2016
In To Kill A MockingBird book by Harper Lee. What is the Boo Radley game? Who plays it and how do the different characters feel about it? In your response refer closely to the text to build a convincing argument.
March 14, 2016
Physics (Inside the atom)
A sample of radioactive isotope I is to be used for medical diagnosis of the kidneys. The isotope has a half-life of 8.0 days, and the sample is required to have an activity of 8 x 10^5 per second at the time it is given to the patient. Calculate the mass of the I-131 present ...
March 10, 2016
A family is building a circular fountain in the backyard the yard is rectangular and measures 6x by 7x and the fountain is going to be circular with a radius of 2x once the fountain is built what will be the area of the remaining yard?
March 9, 2016
Long form: 0.19 / (square root of n) = 0.01 multiply both sides by (square root of n) which gives you: 0.19 = (0.01) x (square root of n) divide both sides by 0.01 which gives you: 0.19 / 0.01 = square root of n both sides to the power of 2: (0.19 / 0.01)^2 = (square root of n...
March 5, 2016
4. Suppose that an excess of propane, C3H8 , burns in 320 g of oxygen, How many moles of water will be formed? C3H8 + 5 O2 --> 3 CO2 + 4 H2O (1 point) 6.02 E 23 moles 1600 moles 4.0 moles 8.0 moles
February 16, 2016
Given that A= 4.00i(hat)+ 10.0j(hat)and B = 3i(hat)-5.00j(hat), find the magnitude and directions(i.e., angle with respect to the +x axis) of C= A+B magnitude = 8.6 I cant find out how to find the angle
February 10, 2016