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Please show how you got the answer, thanks! At the top of a hill with slope angle 32o a snow sled is moving at 4 m/s. how fast will the sled be traveling at the bottom
How many liters of water are required to dissolve 5.55 grams of KOH and make a solution with a pH of 11.63
A portable CD player operates with a voltage of 8.00 V, and its power usage is 0.264 W. Find the current in the player
raising the total pressure from P0 (the initial air pressure) to P1 (the total final pressure of H2(g) + air).Compose an algebraic expression for the volume (V2) that this sample of H2(g) would occupy
One gallon of gasoline contains 3.1 107 calories of potential energy that are released during combustion. what is the average force produced by the gasoline
A cannon is rigidly attached to a carriage, which can move along horizontal rails, but is connected to a post by a large spring, Determine the maximum extension of the spring
Block B in the figure below weighs 730 N. The coefficient of static friction between block and table is 0.24. Find the maximum weight of block A for which the system will be stationary
Which of the following pairs of molecules is listed in order of DECREASING net dipole moment from more polar molecule to less polar molecule
Describe how Hiv-Aids surveillance data are collected and outline the advantages and limitations of these approaches
Three charges are located at the corners of an equilateral triangle with sides 20 cm. What is the electric field at the center of the triangle
Two waves are described by the following wave functions y1(x,t) = 3.50 sin (2.00x ? 10.0t) y2(x,t) = 12.00 cos (2.00x ? 10.0t) , find the amplitude and phase of this sinusoidal wave
The pKb values for the dibasic base B are pKb1 = 2.1 and pKb2 = 7.8. Calculate the pH at each of the following points in the titration of 50.0 mL of a 0.60 M B(aq) with 0.60 M HCl(aq).
The Born-Haber cycle is a series of steps that represent the formation of an ionic compound from a metal and a nonmetal. For example, the steps in a Born-Haber cycle for the formation of NaCl(s) con
When breeders make selections they do so based on the phenotypes of plants they are comparing. Write a half page discussing the different sources of environmental variation that can influence the ph
Draw the product of the following reaction between a ketone and an alcohol. H3C--CO--CH3 + HO--CH2--CH3 ---H+--> how would you classify the product of the reaction? -alcohol -ketone -hemiacetal -
A generator rotates at 87Hz in a magnetic field of 9.0×10?2T . It has 600 turns and produces an rms voltage of 180V, find the area of each turn of the coil
Calculate the molar solubility of calcium oxalate, CaC2O4, in a solution that has been buffered so that the pH is constant and equal to 4.00. The solubility product for calcum oxalate is 1.7 x 10-9.
A railroad car of mass 3.0 104 kg moving at 4.00 m/s collides and couples with two coupled railroad cars, What is the speed of the three coupled cars after the collision
Marshmallow burnt is 0.70 g, mass of the water 39.9, and delta change is 12C 2. Peanut burnt is 0.5 g, mass of the water is 42.6 g, and the delta change is 12C. 3. Popcorn is 0 g burnt, mass of the
Identify the equation below which is dimensionally incorrect. A, x, y and r have units of length. k here has units of inverse length. vo and v have units of velocity. a and g have units of accelerat
A 78-kg fisherman in a 137-kg boat throws a package of mass m = 15 kg horizontally toward the right with a speed of vi = 4.0 m/s, find the velocity of the boat after the package is thrown
Two resistors, 61.1 and 83.6 , are connected in parallel. The current through the 83.6 - resistor is 4.29 A. What is the total power supplied to the two resistors
Determine the changes in entropy (of the system, the surroundings, and the universe) for each step of the cycle and the cycle overall. Evaluate the maximum efficiency of the engine, assuming that the
A rifle with a weight of 30 N fires a 6.0-g bullet with a speed of 200 m/s. find the recoil speed of the man and rifle
A 0.329-kg volleyball approaches a player horizontally with a speed of 12.9 m/s. What impulse is delivered to the ball by the player