A long metalic strip 1.8 cm wide and 1.0 mm thick is placed in a 1.4-T...

A long metalic strip 1.8 cm wide and 1.0 mm thick is placed in a 1.4-T magnetic field as in the (Figure 1). When a steady current of 17 A passes through it, the Hall emf is measured to be 1.02 μV. Figure1 of 1 Part A Determine the drift velocity of the electrons. Express your answer to two significant figures and include the appropriate units. vd v d = Previous AnswersRequest Answer Incorrect; Try Again; 5 attempts remaining Part B Determine the density of free (conducting) electrons (number per unit volume) in the copper. Express your answer using two significant figures. n n = nothing electrons/m3 Request Answer Provide Feedback Incorrect. Incorrect; Try Again; 5 attempts remaining. No additional feedback.

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genius_generous answered 2 years ago

copper fin 1.0 mm thick is placed on a circular tube. The out side daiameter of...

copper fin 1.0 mm thick is placed on a circular tube. The out side daiameter of the tube is 2.5 cm. The fin long is 8 mm and the thermal conductivity is 379 W/m °C. The tube wall is maintained at 473K. The fin is exposed to an environment with h = 30 W/m "C and T∞= 288K. %3D Calculate the heat lost by the fin.

a strip of Ag was placed in a beaker containing 1.0 M AgNO3, and a strip...

a strip of Ag was placed in a beaker containing 1.0 M AgNO3, and a strip of Co was put in a second beaker containing Co(NO3)2. The silver and cobalt electrodes were connected by a wire through an ammeter, and the two beakers were connected by a NaCl salt bridge. 1. Use E0 valuesto describe which way the electrons will flow. Show the direction of electron flow on the diagram, then label the anode and the cathode.Ag+ + e- =...

A fish tank has dimensions 42 cmcm wide by 1.0 mm long by 0.80 mm high....

A fish tank has dimensions 42 cmcm wide by 1.0 mm long by 0.80 mm high. a. If the filter should process all the water in the tank once every 3.0 hh, what should the flow speed be in the 3.0-cmcm-diameter input tube for the filter?

A base for an airport runway, 100 m wide, 2000 m long and 500 mm thick,...

A base for an airport runway, 100 m wide, 2000 m long and 500 mm thick, is to be constructed out of a clayey sand excavated from a nearby borrow pit, where the in situ water content is 6%. This soil is being transported in trucks having a capacity of 8 m 3 , where each load weighs 13200 kg. In the subbase course, the soil will be placed at a water content of 14.2% to a dry density of...

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 plank 2.00 cm thick and 14.3 cm wide is firmly attached to the railing of...

A plank 2.00 cm thick and 14.3 cm wide is firmly attached to the railing of a ship by clamps so that the rest of the board extends 2.00 m horizontally over the sea below. A man of mass 95.3 kg is forced to stand on the very end. If the end of the board drops by 4.90 cm because of the man's weight, find the shear modulus of the wood.

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.

An electric current passes through a metal strip 0.50 cm by 5.0 cm by 0.10 mm,...

An electric current passes through a metal strip 0.50 cm by 5.0 cm by 0.10 mm, heating it at a rate of 128 W. The strip has emissivity e=1 and its surroundings are at 306 K. What will be the strip’s temperature(K) if it’s enclosed in an insulating box with thermal R=12 K/W resistance that blocks all radiation?

An electric current passes through a metal strip 0.60 cm by 6.0 cm by 0.18 mm...

An electric current passes through a metal strip 0.60 cm by 6.0 cm by 0.18 mm , heating it at the rate of 52 W . The strip has emissivity e=1.0and its surroundings are at 250 K . What will be the temperature of the strip if it's enclosed in (a) a vacuum bottle transparent to all radiation and (b) an insulating box with thermal resistance R = 9.0 K/W that blocks all radiation? (A and B answers should be...

A thermopane window consists of two glass panes, each 0.50 cm thick, with a 1.0 cm...

A thermopane window consists of two glass panes, each 0.50 cm thick, with a 1.0 cm thick sealed layer of air in between a) if the inside surface temperature is 22.2 c and the outside surface temperature is 0.0 c determine the rate fo energy transfer through 1.35 m^2 of the window _______W b) compare your answer to a) with the rate of energy transfer through 1.35 m^2 of a single 1.0 cm thick pane fo glass. Disregard surface air...

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