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How long until the boys are 100cm apart? What is the area of the triangle formed by their positions after 2 seconds? What is the peremeter?
A 45.0-kg crate is dragged at constant velocity 8.20-m across a horizontal floor with a rope making a 30 degree angle above the horizontal. The coefficient of kinetic friction is 0.250. Find the wor
How many molecules of ethane arecontained in 25.0 mL of butane? The density of butane is 0.6011g/mL and the molar mass is 58.12 g/mol.
Suppose W is the energy transferred stretchinig a spring from 0 to 0.10 m. The amount of work done stretching the same spring from 0.10 m to 0.20 m is:
What is the physical significance of the fact that k is negative? This function has a horizontal asymptote. Where is it and what is its physical significance?
How many grams of KClO3 will react with 67.8mL of 5.98M HClaccording to the reaction: KClO3 + 6HCl ----> 3 H2O + KCl+3Cl2?2 250 mL of a solution is made up from water and 2
Essay, what are the organic chemical groups that characterize carbohydrates? How are the carbohydrates classified according to the presence of those groups .
A hyperbola has a vertical transverse axis of length 8 and asymptotes of y=7/2x-3 and y=-7/2x-1. Find the center of the hyperbola, its focal length, and its eccentricity.
State the properties of the cosine function. State the domain and range of f(x) := cos x. Determine all values of x where f(x) is zero (i.e. the x-intercepts).
An airplane has an effective wing surface area of 116 m2 that is generating the lifting force. In level flight the air speed over the top of the wings is 62.0 m/s, while the air speed beneath the wi
Let L be the distance between the boat and the top of the lighthouse. Let be the angle of elevation between the boat and the top of the lighthouse. Express b as a function of theta.
Calculate the pH at the equivalence point in the titration of 50 mL of .10M methylamine with a 2.0M HCL solution.
What is the y-component of the magnetic force on the first particle due to the second?
A Rolaids tablet contains calcium carbonate to neutralize stomach acid. If 44.55 mL of 0.448 M hydrochloric acid is required to neutralize one tablet, how many milligrams of calcium carbonate are in
When the magnetic flux through a single loop of wire increases by 30 tm^2, an average current of 40A is induced in the wire. Assuming that the wire has a resistance of 2.5 Ohms a(a) over what period
Two workers hold a heavy pail. Its mass is unknown. One worker exerts a 220N force at 137 degrees from vertical. The other worker exerts a 170N force. What is the weight of the pail?
Kucharel is a polymer that is prepared by heating the dimethylester derived from cyclohexane-1, 4-dicarboxylic acid with ehyleneglycol. What is the repeating unit in Kucharel?
On the return trip it flies with the tailwind and has an effective ground speed of 124 mi/h. Find the speed p of the plane in still air, and the speed w of the wind.
What is the work done on the gas if it is compressed at constant pressure to one-quarter its initial volume?
Show that this can be done two different ways and find the exact dimensions of the box in each case (note, one of your answers may have dimensions that will require you to approximate).
Calculate (a).the molar concentration of the ammonia solution and (b). convert to percent by mass concentration of ammonia (17.0 amu), given asolution density.
Find the amount of time it takes for the target mass (m = 1kg) to raise its temperature by 100K if the current of the beam is I = 20µA. Note that the specific heat of iron is c = 500J/kg K, an
Determine the equation of both parabolas that pass through the three points. Graphically display the results an axes.