If the atomic radius of aluminum is 0.143 nm, calculate (a) the volume of its unit cell in mm3, (b) its theoretical density, and (c) compare its calculated density in part (b) with the experimental value inside the front cover of our textbook.
Fluid Pressure Simulation Learning Goals: To understand how pressure varies with the fluid density To understand how pressure varies with varying gravitational acceleration Open the PHET simulation at https://phet.colorado.edu/sims/html/under-pressure/latest/under-pressure_en.html Part 1. Select the first setting with a single pool. Empty the pool completely. Make sure that the units are in Metric. Do not touch the […]
Nambu string theory: QQ potential according to Alvarez and Arvis Write a manuscript on Nambu string theory. Apply the Nambu string theory to the world surface of the Wilson loop. The quantization of the transversal oscillation should be carried out in the Fock room. The resulting QQ potential was first derived from Alvarez. The general […]
Description Purpose: To develop graphical amd mathematical representations to determine the effect of Earth’s gravitation on matter. Experimental Variables: Independent: mass of object(s), (kg) Dependent: gravitational force (weight), (N) Performance Notes: • Open the “Weight vs. Mass” simulation: gravitation lab simulation . • Click the desired object in the upper left. • Drag the slider […]
(a)A convex lens has a focal length of 25.0 cm. An object is placed at a distance of 35.0 cm from this lens. (i)Calculate the image distance for this arrangement. (ii)What is the magnification of the image? [4](b)The image is required to be magnified by 5times. (i)At what distance would the object have to be […]
A space orbiter of mass 2.0 × 104kg is travelling at 1500 ms−1. The engines eject hot exhaust gases at a speed of 1200 ms−1relative to the orbiter. In order to get onto the correct trajectory to dock with a satellite the orbiter fires its engines and carries out a 5.0 s burn. During this […]
A boiler with superheater generates 6,000 kg/h of steam at 1·5 MN/m², 0·8 dry at exit from the boiler and at a temperature of 300°C on leaving the superheater. The feed water temperature is 80°C and the overall efficiency of the combined boiler and superheater is 85%. Determine the following, stating any assumptions made: (a)The […]
A test is carried out to determine the overall heat transfer coefficient in a new automotive radiator that is a compact cross-flow water-to-air heat exchanger with both fluids (air and water) unmixed. The radiator has 40 tubes of internal diameter 5 mm and length 650 mm, in a closely spaced plate-finned matrix. Hot water enters […]
Consider two identical bodies, one at 5000 K and the other at 2000 K. With the aid of a suitable diagram, explain: (a)Which of the two bodies will emit more radiation in the shorter-wavelength region. (b)Which of the two bodies will emit more radiation at a wavelength of 20 μm
The temperature of a gas stream is to be measured by a thermocouple whose junction can be approximated to a 1·2 mm-diameter sphere. The properties of the junction are: J/kgK,320andkg/m8500, W/mK353pCk. The heat transfer coefficient between the junction and the gas is W/m²K65 h10. Determine how long it will take for the thermocouple to read […]
