43 Answered Questions for the topic Engineering

11/21/19

#### circular motion question

A 67 gram coin sits on a horizontally rotating turntable. The turntable makes 1.7 revolution each second. The coin is located 10 cm from the axis of rotation of the turntable. The coin will slide...
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09/27/19

#### Coefficient of Static Friction Physics Problem

A box that weighs 50 N is pulled by a force of 10 N. The coefficient of static friction between the box and the ground is 0.5. Describe what will happen to the box? Will it start moving? Will it...
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09/27/19

#### Moving Elevator Physics Problem

An elevator is suspended by a cable and the elevator weighs 5500 N. The elevator moves upward with an acceleration of 4 m/s2. Find the tension in the supporting cable. * Use 10 m/s2 for the...
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06/23/19

#### In what year did Charles Proteus Steinmetz fix Ford's Generator for the famed $10,000 invoice?

[Charles Proteus Steinmetz](https://en.wikipedia.org/wiki/Charles_Proteus_Steinmetz) is the protagonist of an interesting tale [about fixing a generator at Ford's...
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05/04/19

#### Can i study m.sc in aeronotics after b.sc in Physics?

Currently I am studying b.sc in physics which doesn't include any course over aeronotics or aeronotical engineering but iam very much egar to study aeronotics,so i want to study aeronotics in...
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09/19/18

#### what's the ratio 15 feet to 1.46 inches

It's for measuring a floor plan print that is dimensioned in inches and plotted out on a F-size paper.
when I measure a roll-up door on the floor plan, it measures 1.46 inches even the the...
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03/24/18

#### you are given a motor operated by a 9V battery....

For all the questions below, you are given a motor operated by a 9V battery. The stall torque for this motor is Ts = 0.04 N-m, and its no-load speed, wnl = 2200 rpm. 1. Draw the torque vs. speed...
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01/03/18

#### When should you use Gauss-Jordan method to find inverse? Does the determinant only tell you whether there is an inverse?

Mathematical engineering. I don't understand lol.

11/01/17

#### Is there such thing as a one way valve that can move pressurised air from one cylinder to another?

I just need the name of the part if it exists or a link would be appreciated

08/17/17

#### How long will it take to empy the retention pond?

Three pumps are used to empty retention Pond holding an unknown amount of water. If pump 1 can empty the pond in 4 days, pump 2 can empty the pond in 10 days, and Pump 3 can empty the pond and 5...
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07/21/17

#### Solve chemical reaction for temperature of exothermic reaction (thermite)

Hi there, I I have a question about Physics/ chemistry.If I have a bag of iron oxide(lll) and powdered aluminium in the ratio of 3:1 totalling 72g, with 54g being Fe2O3 and 18g of 2Al, what would...
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03/08/17

#### Maths problem

the resistace R of a wire is directly proportional to its length. If R=40mohms for a wire 10 cm long , find the resistance R in mohms :
a) when the length decreases to 6cm
b) when the length...
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02/04/17

#### Maths problems

the solar energy falling on one square centimeter of the earth is 1.93 calories per minute.if 1 kW = 239 calories per second , how many kilowatts per square meter fall on the earth?round answer to...
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02/04/17

#### solve the problem

the resisitance of a no.8 copper wire whose cross section is 8.37mm^2 is 2.06 ohms per kilometer.a. what is the resistance in ohms per 1000 ft?b. what is the cross section in square inches?

09/25/16

#### 518m long steel arch. how much will it's length change between temperature extremes of -20 degrees Celsius and 35 degrees Celsius

the new river gorge in west virginia is a 518m long steel arch. how much will it's length change between temperature extremes of -20 degrees Celsius and 35 degrees Celsius

09/02/16

#### The example how you get the answer

What is the weight of the plain carbon steel used in the construction of a cylinder that has a radius of 5" and a height of 24" assume 1/2" thick steel is the material used?

09/02/16

#### What is the weight of the plain carbon steel used in the construction of a cylinder that has a radius of 5"

What is the weight of the plain carbon steel used in the construction of a cylinder that has a radius of 5" and a height of 24" assume 1/2" thick steel is the material used?

08/21/16

#### how do I evaluate cos^2 (95 degrees)

I was assigned a math packet for an engineering class and I'm supposed to show work on all problems. Is there any handwritten way to solve this?

07/18/16

#### If a person has been riding a bike for 5 seconds and gone a distance of 30 meters (m), how fast is he or she going?

There really is no other details.

06/26/16

#### Could anyone give the work solution. its a fluid mechanics question about turbomachinery

A local ventilation system (a hood and duct system) is used to remove air and contaminants from a pharmaceutical lab (Fig. P14–51). The inner diameter (ID) of the duct is D 5 150 mm, its average...
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04/29/16

#### Advising a building contractor

A building contractor has acquired a 10 acre site and plans to develop it as a residential area. The contractor has two basic designs for homes: a low income home and a middle income home. he...
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04/20/16

#### can anyone do this?

the source of of emission is the standby diesel set. the generator set is maintained to assure highest efficiency and avoid poor fuel combustion that result to dark emissions. Emission expected...
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