7. The standard width between rails on North American and most European railroad

Question

7. The standard width between rails on North American and most European railroads is 4 ft 8 in. Calculate this distance in b. meters. The heat required to raise the temperature of a large cup of water (for coffee) from room temperature to boiling is approximately 100 kJ. Express this quantity of heat in kilocalories. Show your calculations. of about 325 mg (5 grains). Calculate the total mass of aspirin 9, An aspirin tablet has a mass tablets in a 500-tablet bottle in grams and ounces. a. Brams b. ounces 10, A concrete pile from a waterfront pier was pulled from the harbor water at Port Hueneme, Califomia, dimensions were 14 in. x 14 in. x 15 ft a. What is the surface area, expressed in square feet, of a single face of the pile? Exclude the cads of the pile. b. Determine the total surface area, expressed in square meters of the pile, including the ends of the pile. c. How many cubic meters of concrete were used to make the pile? 50 The Laboratory and SI

Explanation / Answer

7. a. 1 feet = 30.40 cm and 1 inch = 2.54 cm

     Then 4 feet = 121.92 and 8 inch = 20.32 cm

      Therefore 4 feet 8 inch = 121.92 + 20.32

                    4ft 8in = 142.24 centimeter

b. 1 centimeter = 0.01 meter then

      142.24 centimeter = 1.4224 meter

      Therefore 4ft 8in = 1.4224 meter

8. 1 kilocalorie = 4.18 kilojoule

       Then 1 kilojoule = 1/ 4.18 kilocalorie = 0.239006 kilocalorie

              Therefore 100 kilojoule = 23.9006 kilocalorie

9.          1 milligram = 0.001 gram

       Then 325 mg = 0.325 gm (one aspirin tablet mass)

       Therefore 500 tablets mass = 500 x 0.325 gm

                                            = 162.5 gm

Total mass (in grams) of 500 aspirin tablets are 162.5 gm

1 gram = 0.035274 ounce

Therefore 162.5 gm = 0.035274 x 162.5

                                = 5.732025 ounce

Total mass (in ounces) of 500 aspirin tablets are 5.732025 ounce

Please raise another remaining question as per chegg policy

Related Questions

Navigate

• Browse (All)
• Browse 7
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.