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A ? -operated hoist is a hoist that requires a manual force to provide the input torque.

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What is the total number of 5 digit numbers such that the product of the digits of that number is divisible by 10? Case 1: Consider numbers whose product is 0 to be divisible by 10. Case 2: Consider only nonzero digit numbers.

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d) If 182 grams of PbCl4 are reacted, how many grams of lead can be produced? e) If 15.5 grams of lead were recovered, what was the % yield? 4. Gold(III) sulfide can react with hydrogen gas according to the following equation: Au2S3 + H2 \rightarrow Au(s) + H2S(g) f) Balance the equation. g) Classify the reaction: decomposition, combination, single replacement, double replacement h) Find the Molar Mass of gold(III) sulfide. i) If 28.5 grams of Au2S3 are reacted, how many grams of gold can be produced? j) If 18.0 grams of gold were recovered, what was the % yield?

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An economy produces 100 donuts, of which 80 are consumed in the country and20 exported. The price of a donut is $1. The residents of this economy like to pair the donuts with apple cider. They drink 3 gallons of apple cider, imported from abroad at $5 a gallon. There is a teacher who educates children at the public school and makes $4. There is also a tax collector, who collects taxes amounting to $8. The government's budget is balanced, and thus, the $8 in tax revenue is spent on the $4 teacher's salary and the tax collector's salary, which is also $4. In the national accounts, Which is correct? A. Consumption is $95 B. Government purchases of goods and services is $8 C.net exports is $5 D.all of the above

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ENME 3716 Fluid Mechanics Laboratory (Section 601) Quiz#1, Summer 2017 NAME 1. What is the difference between uncertainty and error? Name the three major categories of uncertainty. Name the two main classifications of error and give an example of each. (15%) 2. Suppose an experiment is to be performed with the aim of calculating the Weber number (We), which is important for droplet formation and capillary flows and is defined as: $We = \rho V^2L/\gamma$. Assuming that $\rho$, V, L, and $\gamma$ are uncertain, use the analytical method to write the equation for the overall uncertainty of We. [Add the individual contributions using the absolute value method]. (15%) 3. What is a hydrostatic force and how does it relate to the buoyant force? Why is the buoyant force ignored during experiment #1? (10%) 4. In experiment #1, how does your approach change when the water level sinks below the top of the torus? (10%)

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Let \vec{a} = \langle 1, 5, 4 \rangle. Find \|\vec{a}\|.

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When four roommates agree to specialize in the chores they are most efficient at, this can lead to a situation in which less time is spent on chores by every roommate. some roommates doing many more chores than others. one roommate who is most efficient doing all of the chores. no chores getting done at all.

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An investment project provides cash inflows of $1,180 per year for eight years. (Enter O when there is no payback period. Round the answers to 2 decimal places.) a. What is the project payback period if the initial cost is $4,900? Payback period years b. What is the project payback period if the initial cost is $7,000? Payback period years c. What is the project payback period if the initial cost is $10,000? Payback period years

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A spoiler is an inverted airfoil which produces downwards lift force. They are often used on fast race cars to increase traction (from the downwards force), reducing the risk the car will skid. Your friend wants to improve traction on their Honda Civic (a regular car) by adding a spoiler to its trunk. Your friend has chosen a NACA 23015 airfoil whose properties are shown in figure 4. The spoiler will measure 2 m wide, 20 cm long, and be supported by two cylindrical rods measuring 2 cm in diameter and 50 cm in length. Your friend plans to race on a closed track at an average speed of 150 km/hour. a) Explain the effects contributing to the total drag of the spoiler. You may use diagrams to help. b) Choosing the optimum angle for the spoiler, calculate the downwards force gained by adding the spoiler when racing at 120 km/hour. c) The car has a mass of 1200 kg, a 116 kW engine, a frontal area of 0.654 m², and a drag coefficient of 0.31 (before installing the spoiler). Calculate the car's top speed with and without spoiler. Note: The density of air is 1.2 kg/m³, and power is $P = F \cdot V$.

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M.P. VanOyen Manufacturing has gone out on bid for a regulator component. Expected demand is 700 units per month. The item can be purchased from either Allen Manufacturing or Baker Manufacturing. Their price lists are shown in the table. Ordering cost is $45, and annual holding cost per unit is $4. Allen Mfg. Baker Mfg. Quantity Unit Price Quantity Unit Price 1-499 $16.00 1-399 $15.10 500-999 15.50 400-799 15.60 1000+ 15.00 800+ 15.10 a) What is the economic order quantity if price is not a consideration? 435 units (round your response to the nearest whole number). b) Which supplier, based on all options with regard to discounts, should be used? Allen Mfg c) What is the optimal order quantity and total annual cost of ordering, purchasing, and holding the component? The optimal order quantity is \boxed{} with a total cost of $\boxed{} (round your responses to the nearest whole number).

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hannah b.