Recent questions in Engineering

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A wheel has an initial clockwise angular velocity of 10 rad/sec and a constant angular acceleration of 3 rad/sec2. What time is required to acquire a clockwise angular velocity of 15 rad/sec? a)- 1.67

Benjamin Kadish asked Aug 1, 2020

by Benjamin Kadish

5.6k points

1 answer

4 votes

20.3k views

For all substances, Cp>C. Why is that?

Gautam Mandsorwale asked Aug 1, 2020

by Gautam Mandsorwale

6.0k points

1 answer

5 votes

115k views

Calculate the mean effective load (in kN) on a ball bearing (p=3) under varying loads with a dynamic load rating of 36.8 kN and a predicted life of 90x10^6 of revolutions (tip L is expressed in millions

Hoang Hiep asked Aug 1, 2020

by Hoang Hiep

5.5k points

1 answer

0 votes

225k views

What is the heat capacity rate? What does a heat capacity of infinity for a fluid in a heat exchanger means?

Meggie asked Aug 1, 2020

by Meggie

5.8k points

1 answer

1 vote

48.1k views

An air conditioner unit uses an electrical power input of 100W to drive the system and rejects 440W of heat to the kitchen air. Calculate the air conditioner's cooling rate and its coefficient of performance

Ghirlekar asked Aug 1, 2020

by Ghirlekar

5.7k points

1 answer

0 votes

106k views

What is the connection between the air fuel ratio and an engine running rich/poor? please give clear examples and full sentances.

Shilpa Shinde asked Aug 1, 2020

by Shilpa Shinde

5.6k points

1 answer

2 votes

116k views

A horizontal steam pipe (d i = 7.8 cm, d 0 = 8.9 cm) carries saturated steam at 200.5 0 C. A 2 cm thick insulation ( k = 0.05 w/m-K) is installed to reduce heat loss to the ambient air at 25 0 C. Neglecting

Qknight asked Aug 1, 2020

by Qknight

6.0k points

1 answer

5 votes

234k views

When designing solid rockets, thrust and mass flow must be considered time dependent. a) True b) False

Nickolas Hook asked Aug 1, 2020

by Nickolas Hook

5.5k points

1 answer

3 votes

3.0k views

Hydrogen peroxide, H2O2, enters a gas generator at 25 Celsius, 500 kPa, at the rate of 0.1 kg/s and is decomposed to steam and oxygen exiting at 800 K, 500 kPa. The resulting mixture is expanded through

Nashcheez asked Aug 1, 2020

by Nashcheez

5.6k points

1 answer

3 votes

164k views

Water at 98 F flows in a pipe 4 inches in diamter and 870 feet in length at a rate of 260 gallons per minute (GPM). What is the Reynolds number?

Yasan Glass asked Aug 1, 2020

by Yasan Glass

5.6k points

1 answer

0 votes

201k views

Find vC(t) for t ≥ 0 (in V), assuming the switch was open for a long time when closed at t = 0. Assume the capacitor and inductor are initially uncharged. (1) 3 – 4e–2t + e–8t (2) 2 – e–2t + 2e–8t (3)

Beans On Toast asked Aug 1, 2020

by Beans On Toast

6.0k points

1 answer

3 votes

79.3k views

A rocket developed by an amateur was traveling upwards at a velocity given by v = (11 + 0.2s) m/s, where s is in meters. Determine the time for the rocket to reach an altitude of s = 80 m. Initially, s

Leopardxpreload asked Aug 1, 2020

by Leopardxpreload

6.1k points

1 answer

1 vote

133k views

Explain what is meant by the "ductile-brittle transition" of steel and how this relates to the cracking problems with the Liberty ships during World War II.

Stellarchariot asked Aug 1, 2020

by Stellarchariot

5.2k points

1 answer

1 vote

226k views

1. A thin plate of a ceramic material with E = 225 GPa is loaded in tension, developing a stress of 450 MPa. Is the specimen likely to fail if the most severe flaw present is an internal crack oriented

Avadhuta asked Aug 1, 2020

by Avadhuta

5.4k points

1 answer

1 vote

11.1k views

How to make a shopping cart move with ease without a motor. Like if the carts front wheels were smaller than the ones in the back the cart would move forward easier, or if the front of the cart is heavier

OhioDude asked Jul 28, 2020

by OhioDude

5.2k points

1 answer

5 votes

169k views

Which of the following is/are not a cutting tool material (mark all that apply)? a. High-speed steel b. Brass c. Coated carbide d. Diamond

Peter Wretmo asked Jul 28, 2020

by Peter Wretmo

5.1k points

1 answer

5 votes

143k views

Each of the following is a function of an automotive transmission except: A. Allows the drive wheels to turn different speeds for cornering. B. Provides a gear ratio to increase engine torque. C. Provides

Pierre Valade asked Jul 28, 2020

by Pierre Valade

5.5k points

1 answer

0 votes

222k views

We wish to find roots of the following equation: cos(x) = x 3 (a) Perform two iterations of Bisection method by hand to find the roots of the nonlinear equation using the initial interval of 0.5 to 1.

Bitcruncher asked Jul 28, 2020

by Bitcruncher

5.3k points

1 answer

1 vote

43.7k views

Find the diameter of the test cylinder in which 6660 N force is acting on it with a modulus of elasticity 110 x 103 Pa. The initial length of the rod is 380 mm and elongation is 0.50 mm.

Simontemplar asked Jul 28, 2020

by Simontemplar

6.1k points

1 answer

5 votes

124k views

Who is this please help :(

Darkermuffin asked Jul 28, 2020

by Darkermuffin

5.6k points

2 answers

1 vote

14.8k views

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