A 7.5 kg block is placed on a table. If its bottom surface area is 0.6 m2, how much pressure does the block exert on the tabletop?
A. 122.5 Pa
B. 367.5 Pa
C. 73.5 Pa
D. 226.5 Pa

A 7.5 kg block is placed on a table. If its bottom surface area is 0.6 m2, 122.5 Pa pressure does the block exert on the tabletop. P = F/A = mg/A = (7.5 kg)(9.8 m/s²)/(0.6 m²) = 122.5 Pa.

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Asked 4/15/2019 3:59:49 PM

Updated 167 days ago|5/10/2020 8:20:01 PM

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A 7.5 kg block is placed on a table. If its bottom surface area is 0.6 m2, 122.5 Pa pressure does the block exert on the tabletop. P = F/A = mg/A = (7.5 kg)(9.8 m/s²)/(0.6 m²) = 122.5 Pa.

Added 167 days ago|5/10/2020 8:20:01 PM

This answer has been confirmed as correct and helpful.

Find the volume of a cylinder with a diameter of 10 inches and a height of 20 inches. A. 1,570 cu. in. B. 62.8 cu. in. C. 705 cu. in. D. 6,280 cu. in.

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Updated 9/10/2019 2:28:12 PM

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[Deleted]

Added 9/10/2019 2:27:57 PM

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Deleted by maydj [9/10/2019 2:28:01 PM]

The volume of a cylinder with a diameter of 10 inches and a height of 20 inches is: 1,570 cu. in.

Solution:

r = diameter / 2

r = 5

V = pi * r² * h

V = 3.14 * 25 * 20

V = 1,570

Solution:

r = diameter / 2

r = 5

V = pi * r² * h

V = 3.14 * 25 * 20

V = 1,570

Added 9/10/2019 2:28:12 PM

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A cylindrical tank has a radius of 15 feet and a height of 45 feet. How many cubic feet of water can the tank hold?
A. 675 cu. ft.
B. 31,792.5 cu. ft.
C. 15,896.25 cu. ft.
D. 127,170 cu. ft.

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Not Answered

Updated 148 days ago|5/30/2020 10:04:26 AM

1 Answer/Comment

A cylindrical tank has a radius of 15 feet and a height of 45 feet. The tank can hold 31,792.5 cubic feet of water.

Solution:

Volume of cylinder = pi * r^2 * h

Volume of cylinder = 3.14 * 15^2 * 45

Volume of cylinder = 3.14 * 225 * 45

Volume of cylinder = 31,792.5 cu. ft. (answer)

Solution:

Volume of cylinder = pi * r^2 * h

Volume of cylinder = 3.14 * 15^2 * 45

Volume of cylinder = 3.14 * 225 * 45

Volume of cylinder = 31,792.5 cu. ft. (answer)

Added 148 days ago|5/30/2020 10:04:26 AM

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The distance from the center of a compact disc to the edge of the disc is 6 centimeters. What's the area of the compact disc? A. 113.04 square centimeters B. 452.16 square centimeters C. 36 square centimeters D. 18.84 square centimeters

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Updated 6/26/2019 7:30:19 AM

1 Answer/Comment

The distance from the center of a compact disc to the edge of the disc is 6 centimeters. Radius = 6 cm , Area = pi *r^2 = 3.14 *6^2 = 3.14 *36 = 113.04 square centimetres

Added 6/26/2019 7:30:19 AM

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50 J of work was performed in 20 seconds. How much power was used to do this task? A. 24.5 W B. 0.4 W C. 4 W D. 2.5 W

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Updated 29 days ago|9/25/2020 10:45:05 PM

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50 J of work was performed in 20 seconds. 2.5W power was used to do this task.

Power = work done / time taken ; Power = 50 / 20 = 2.5W

Power = work done / time taken ; Power = 50 / 20 = 2.5W

Added 29 days ago|9/25/2020 10:45:05 PM

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How much time should be allowed for a 605-mile car trip if the car will be traveling at an average speed of 55 miles per hour?
A. 9 hours
B. 8.75 hours
C. 11 hours
D. 10.5 hours

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Not Answered

Updated 29 days ago|9/25/2020 10:46:50 PM

1 Answer/Comment

11 hours should be allowed for a 605-mile car trip if the car will be traveling at an average speed of 55 miles per hour.

T= d/s time= distance divided by speed

605 miles / (55 miles per hour) = 11 hours.

T= d/s time= distance divided by speed

605 miles / (55 miles per hour) = 11 hours.

Added 29 days ago|9/25/2020 10:46:50 PM

This answer has been confirmed as correct and helpful.

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