2b) ßAn observer that is standing 12m from a stereo sound speaker perceives the sound level from the speaker to be 60 dß.The decrease in the sound level in part a. is 10 dß. What is the decrease in the physical intensity in watts/m2?
tip problem a uniform cubical crate is .750 m on each side and weighs 500 N. it rest on a floor with one edge against a very small, fixed obstruction. at what least height above the floor must a horizontal force of magnitude 350 N be applied to the crate to tip it? please show […]
Business and Law
–Spherical mirrors A solid glass sphere with a radius 5.00cm and index of refraction of 1.52 has a small coin embedded 3.00cm from the front surface of the sphere. For the viewer looking at the coin through the glass at what distance from the front of the glass does the coin's image appear to be […]
Managing Problem Solving and Decision Making Developing resonant leaders through emotional intelligence, vision and coaching Richard E. Boyatzis, Melvin L. Smith, Ellen Van Oosten, Lauris Woolford THE IMPACT Mary Tuuk was inspiring as she sang the National Anthem for the opening of the Fifth Third Bank River Run in Grand Rapids Michigan to nearly 20,000 […]
Ideal gas Law 1.56 grams of tetracarbon dioxide combust with 1.56 grams of oxygen, calulate the temperature of the carbon dioxide if the reaction takes place in a .891 L vessel at 1193 torr
management and organizations in global environment 2. Research Paper 1: Assessment criteria ASSESSMENT Weighting: Length/Limit: TOTAL 15% Maximum of 1,000 words (Due: Friday, Week 6) 2 This is an individual assignment. Each week, based on the hour of e-learning activity that has been prescribed, you are required actively to engage with the material by writing […]
frequency of vibration A).A pendulum is timed as it swings back and forth. The clock is started when the bob is at the left end of its swing. When the bob returns to the left end for the 90th return, the clock reads 60.0s. a) What is the period of vibration? b) What is the […]
23.39 Angle of a Refracted Beam A beam of light in air makes an angle of 49.5 with the surface (not the normal) of a glass plate having a refractive index of 1.68. What is the angle between the refracted beam and the surface (not the normal) of the glass? I used Snell’s Law and […]
Determining Wavelength of the incident X-Rays A sample is bombarded by incident X-rays, and free electrons in the sample scatter some of the X-rays at an angle of ? = 132.6掳 with respect to the incident X-rays (see figure below). The scattered X-rays have a momentum whose magnitude is 1.690 10-24 kg 路 m/s. Determine […]