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- An Egyptian pyramid contains approximately 1.95 million stone blocks. The average weight of each block is 2.70 tons. What is the weight of the pyramid in pounds? IbsWeight can be measured as the downward force an object exerts due to its mass times the gravitational pull of the Earth. A rock from the moon weighs 6.57 Newtons on Earth. How much did this rock weigh on the moon? The moon has a gravitational acceleration of 1.622 m/s.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.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?If a force, F, has a magnitude of 45 N and is at an angle of 65 degrees (relative to the x-axis) then what is the magnitude of the x and y components (Fx and Fy) of this force? Double check your result by calculating the total force and angle using Fx and Fy.
- What is the magnitude of the force acting on a substance if the magnitude of the change in length is (4 cm) and the amount of the constant is (N 625)?The weight of one dozen apples is 4.3 lb. Determine the average mass of one apple in both SI and US units and the average weight of one apple in SI units. In the present case, how applicable is the "rule of thumb" that an average apple weighs 1 N? Answers: Mass of one apple = Mass of one apple = Weight of one apple = i i i kg slugs NThe Statue of Liberty in New York City is approximately 305 ft305 ft tall. How many U.S. dimes would be in a stack of the same height? Each dime is 1.35 mm1.35 mm thick. number of dimes: Each dime has a mass of 2.268 g.2.268 g. How much would the stack of dimes from the previous question weigh? mass: g What is the value, in dollars, of the same stack of dimes? value: dollars The 2017 U.S. gross domestic product (GDP) was valued at 19,390,604,000 dollars.19,390,604,000 dollars. How many Statue of Liberty‑height stacks of dimes are needed to match the GDP in value? number of stacks:
- Four acrobats of mass 72.0 kg, 68.0 kg, 62.0 kg, and 55.0 kg form a human tower, with each acrobat standing on the shoulders of another acrobat. The 72.0-kg acrobat is at the bottom of the tower. (a) What is the normal force acting on the 72.0-kg acrobat? (Enter the magnitude only.) N (b) If the area of each of the 72.0-kg acrobat's shoes is 390 cm², what average pressure (not including atmospheric pressure) does the column of acrobats exert on the floor? Pa (c) Will the pressure be the same if a different acrobat is on the bottom?Do Chapter 12, Problem 6, with these numbers which I've decided to express in pounds and feet, English units. Sam and Joe carry a beam, walking to the right. Calculate the force that Sam exerts, in pounds. The beam's weight is 109 lb. The beam's length is 21 ft. Sam is 1 ft from the back. Joe is 2 ft from the front.