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Explain why is walking on soft sand so tiring? Determine the basic physics behind walking on sand, compared with walking on the concrete? Explain why is the rocker bottom shoe identical to walking o
Find out if exponential functions only model phenomena which grow, or if can they also model phenomena which decay.
A battery consists of an emf of 15.0 V. The terminal voltage of battery is 9.6 V if it is delivering 14.0 W of power to an external load resistor R. Evaluate the internal resistance.
The solenoid which is 85.2 cm long has a radius of 1.67 cm and a winding of 1110 turns; it carries a current of 4.46 A. Compute the magnitude of the magnetic field within the solenoid.
The wooden artifact recovered from the tomb having 35% of carbon-14 which is present in living trees. Half life of carbon-14 is 5730 years. How long ago was artifact made?
The z-component of the force on the segment of conductor which lies between x = x1 and x = x2. State your answer in terms of the variables provided.
Write down the equation which explains relationship between x and y provided that each point (x,y) is equidistant from point (1,2) and line is y=6. Illustrate the work.
A long rod of 42 cm moves in a plane perpendicular to a magnetic field of 500 G. The velocity of rod is perpendicular to its length. Find out the speed of the rod when the potential difference betwe
The rock in a particular iron ore deposit contains 83 %Fe2O3 by mass. Determine the number of kilograms of the rock must be processed to obtain the 1300 kg of iron?
If an area of triangle ABC is 14 square meters, with a = 20 m and b = 8 m, determine all possible measures for angle C.
Fingernail-polish remover is primarily acetone (C3H6O). Determine the numbers of acetone molecules are in a bottle of acetone with a volume of 405 mL? (the density of acetone =0.788 g/cm3 ).
The mass of drum is 150 kg and its radius is 0.76m. Determine the magnitude of the torque the engine applies to the drum? Avoid the mass of the cable.
The 4.78-g sample of aluminum totally reacts with the oxygen to outline the 6.67 g of aluminum oxide. Use this data to determine the mass percent composition of aluminum in the aluminum oxide.
The 1.45 g sample of phosphorus burns in the air and outlines the 2.57 g of a phosphorus oxide. Describe the empirical formula of the oxide. Express your answer in detail as a chemical formula.
The bridge is to be built in shape of the semielliptical arch and is to have the span of 100 feet. Height of arch, at the distance of 40 feet from center, is to be 10 feet. Determine height of arch
Determine the numbers of calcium are needed to react with the 1.55g of water to make the calcium hydroxide and the hydrogen gas?
The electric field within a conducting metal car is zero. When the car is negatively charged by lightning, the electric field within the car is then
Determine the number of moles in 75.5g ofAl2O3, Determine the mass in grams of one molecule of CBr4
The electrical force on the pair of charges is 60 N. If those similar charges are moved such that the new force among them is 15 N, determine the new distance among the charges?
The 1.912-g sample of calcium chloride is decomposed into its ingredient elements and found to contain 0.690 g Ca and 1.222 g Cl. Describe the mass percent composition of Ca and Cl in the calcium c
Reflector of the flashlight is in shape of the paraboloid of revolution. Its diameter is 4 inches and its depth is 1 inch. How far from vertex must light bulb be placed so that rays will be reflect
Determine the numbers of grams of water are produced when the 17.5 g of oxygen reacts with the nitrogen? Explain in detail.
75.0 mL of 0.355 M hydrochloric acid is added to 25.0 mL of 0.298 M MgCl2 . Determine the concentration of chloride ion in the final solution?
Determine at what mass of lithium phosphate is required to prepare the 575 mL of a solution which is having a lithium ion concentration of 0.250 M?
Combustion analysis of a 25.70mg sample of an organic compound containing only C, H, and N yielded 71.49mg of carbon dioxide and 14.64mg of water. Calculate the mass percentage of nitrogen in organi