Question When casting low carbon steel under certain mold conditions, the mold constant in Chvorino's rule=4.0 min/cm2 Determine how long solidification will take for a rectangular casting whose length = 25 cm, width = 15 cm, and thickness=20 cm.

Please solve as soon as possible. 13. A nuclear submarine cruises fully submerged at 27 knots. The hull is approximately a circular cylinder with diameter D = 11 m and length L = 107 m. Estimate the percentage of the hull length for which the boundary layer is laminar. Calculate the total skin friction drag on the hull and power consumed.

provide illustrations using stars and bars 9. Solve the three counting problems below. Then say why it makes sense that they all have the same answer. That is, say how you can interpret them as each other. (a) How many ways are there to distribute 8 cookies to 3 kids? (b) How many solutions in non-negative integers are there to x + y + z = 8? (c) How many different packs of 8 crayons can you make using crayons that come in red, blue and yellow?

11. You are asked to estimate the market value of Ms Mini's house, which has two floors. The first floor is rectangular, 35 feet wide and 45 feet deep. The area of the 335 second floor is about 70% of that of the first floor. The lot size is 45 feet by 100 feet. The lots in the area sell for $6,000 per front foot. The present construction cost for this type and quality of house is $160 per square foot. A personal inspection of the house reveals the following information: (i) The house needs external painting that will cost $2,000. (ii) The house needs minor roof repair that will cost $1,000. (iii) A recent flooding in the basement has caused a damage of $1,500. (iv) A storm door has to be replaced at a cost of $1,300. (v) Fireplace costs $5,000. (vi) Tthe broadloom of the master bedroom has to be replaced at a cost of $1,800. There is no other observable depreciation. Required: What is the value of Ms Mini's house by the Cost Approach?

A plant bought a calciner for P220,000 and used it for 10 years, the life span of the equipment. Assume a scrap value of P20,000 for straight line method; P22,000 for textbook declining balance method and P20,000 for the double declining balance method. What is the book value of the calciner after 6 years of use?  (a) Using Straight Line Method (b) Using Declining Balance Method (c) Using Double Declining Balance Method

A solution is tested with the four indicator solutions shown in the attached colour chart. The following results are obtained: Thymol blue turns yellow. Methyl orange turns yellow. Methyl red turns orange. • Bromothymol blue turns yellow. What is the estimated pH of the solution? Thymol blue red 1,2 - 2,8 yellow 8.0-9,6 blue Methyl orange red 3,0 - 4,6 yellow Methyl red red 4,2 - 6,3 yellow Bromothymol blue yellow 6,0 - 7,8 blue 2 3 4 10 11 12 pH A. 4.3 В. 8.0 C. 5.3 D. 2.8

A 181 ‑turn circular coil of radius 2.03 cm and negligible resistance is immersed in a uniform magnetic field that is perpendicular to the plane of the coil. The coil is connected to a 16.5 Ω resistor to create a closed circuit. During a time interval of 0.135 s, the magnetic field strength decreases uniformly from 0.627 T to zero. Find the energy 𝐸 in millijoules that is dissipated in the resistor during this time interval.