Using the Faraday equation. What current and time are needed to plate a 1 mm thick...

Using the Faraday equation. What current and time are needed to plate a 1 mm thick layer of copper onto an object with a surface area of 0.1m2 ? The density of copper is 8940 kg/m3 , its atomic weight is M = 63.5 kg/kmol and copper ions have a valence of z = 2.

Expert Solution

samet mamat answered 2 years ago

A Copper plate that is 588mm wide and 48 mm thick is to be reduced in...

A Copper plate that is 588mm wide and 48 mm thick is to be reduced in a single pass in a two high rolling mill by using a 321mm diameter roll. The coefficient of friction at roll workpiece interface is 0.14 and the roll rotates at 107rpm. The rolling process is performed above the recrystallization temperature of the material and the width of the plate does not change during this operation. What is the minimum final thickness (mm) possible

A low-carbon steel plate is 270 mm wide and 25 mm thick. It is reduced in...

A low-carbon steel plate is 270 mm wide and 25 mm thick. It is reduced in one pass in a two‑high rolling mill to a thickness of 20 mm. Roll radius = 300 mm, and roll speed = 30 m/min. Strength coefficient = 500 MPa, and strain hardening exponent = 0.25. Determine (a) roll force, N (b) roll torque, N-m and (c) power required to perform the operation kW.

A Brinell hardness tester is used to determine the hardness of 1/2" thick steel plate. The...

A Brinell hardness tester is used to determine the hardness of 1/2" thick steel plate. The specifications for the steel require that the steel have a tensile strength between 125 ksi and 150 ksi. A 3000 kg load is used for the test. A. Calculate the minimum and maximum Brinell hardness of the steel. B. If a hardness test reveals that the Brinell hardness of the steel plate is 260 BHN what is the diameter of the indention in the...

An AISI 1010 carbon steel plate of 1 by 1 m size and of 6 mm...

An AISI 1010 carbon steel plate of 1 by 1 m size and of 6 mm thickness is hung vertically after a heat treatment to 300°C uniform temperature. It is cooled by ambient air at 20°C flowing parallel to the plate in transverse direction. a) Considering both forced and natural convection, for 8 m/s transverse air velocity, determine the rate of heat transfer from the plate and the corresponding instantaneous rate of change of the plate temperature. b) For the...

A square frame made of 4 mm-thick iron rods and an edge length of 1 m...

A square frame made of 4 mm-thick iron rods and an edge length of 1 m is pushed into a homogeneous magnetic field of B=2 T (T=Vs/m^2) with a constant speed of 15 m/s. Assuming the frame is initially at room temperature (20°C). a) Why does the frame heat up? b)What is the temperature of the frame right after the experiment? c) Now you pull it out of the B-field with the same constant speed, what is the temperature of...

Using the lens maker’s equation, find the radius of curvature needed for the leading surface (in...

Using the lens maker’s equation, find the radius of curvature needed for the leading surface (in other words, R1 =?) to optimize the power of the lens. Assume that the secondary surface has a fixed radius of curvature, R2 Hint: Write the power (P) as a function of R1, and apply the maximization condition. Yes, you need to use calculus. Ans:

What is meant by the following equation: VU(MM’58) > VU(MM’63) > VU(Miller’77)

1) What are the four basic variables of the time value of money equation? 2) What...

1) What are the four basic variables of the time value of money equation? 2) What does the term compounding mean? 3) What happens to a future value as you increase the interest (growth) rate?

1. What are the current recommendations from the CDC regarding vaccines needed during pregnancy and/or the...

1. What are the current recommendations from the CDC regarding vaccines needed during pregnancy and/or the immediate post-partum period? Explain. 2. There are a wide variety of lab tests that are ordered throughout pregnancy. Below is a small sample. Complete the table. Lab Test, Purpose, When is this checked? (if once then when?, if multiple times then when?), Possible results and How does the result alter the plan of care? Urine dipstick Blood type Rubella titer Glucose tolerance test Group...

1.Time taken for oil change It is known that the amount of time needed to change...

1.Time taken for oil change It is known that the amount of time needed to change the oil on a car is normally distributed with a standard deviation of 5 minutes. The manager of a service shop recorded the amount of time (in minutes) to complete a random sample of 10 oil changes. They are listed below. 11 10 16 15 18 12 25 20 18 24 a. The sample average is: _______ minutes (up to 2 decimal points) B.The...

Question