A hardware salesman measures the mass of a box containing 1000 washers. The mass is 1.3082 kg. What is the mass of a single washer in milligrams? Write your answer as a decimal.

a.     A painter uses 4.5 litres of paint to cover a wall with an area of 50 m2. Calculate the average rate of paint coverage in m2/L. b     The painter works for 1.5 hours and then rests for half an hour before completing the painting in another hour. Find the average rate at which the painter paints the wall in m2/h.

The dot product of vectors A and B is 6 sq. meters. If B = 3.5i + 5.1j – 3k meters and the angle between A and B is 63 degrees, what is the magnitude of vector A? Express your answers in meters and in two decimal places.

A solid body of a certain material has a mass of 700 g and a volume of 2.587 cubic centimeters. Calculate the density in SI units.

Suppose a man's scalp hair grows at a rate of 0.50 mm per day. What is this growth rate in feet per century? Number Units

Exactly 640 acres are in one square mile, and one mile equals 1609 meters. How many square meters are in 2.2 acres?

the average density of an atom is approximately 103 kg/m3. The nucleus of an atom has a radius about 10-5 times that of the entire atom, and contains nearly all the mass of the atom.  What is the approximate density, in kilograms per cubic meter, of a nucleus?

A cereal box has the dimensions of 19.75cm x 28.40 cm x 5.2 cm what is the volume of the box in cubic meters?

A person's height is approximately 5 feet 2 inches. Express this height in the following terms. (a) meters m (b) centimeters cm

A hot tub with a surface area of 28 ft2 is filled with water to a depth of 29 in . Hint: volume is calculated as area × height (A × h). A) What is the volume of water in the tub, in liters? Express your answer to two significant figures and include the appropriate units. B) How many kilojoules are needed to heat the water from 59∘F to 103 ∘F? Express your answer to two significant figures and include the appropriate units. C) If the hot-tub heater provides 5900 kJ/min, how long, in hours, will it take to heat the water in the hot tub from 59∘F to 103∘F? Express your answer to two significant figures and include the appropriate units.