According to the seismogram shown in the figure, which wave is the fastest? [pic] a. Tidal wave b. Surface wave [pic] c. P-wave d. S-wave 15. What is the study of earthquakes
2H2 + O2 → 2H2O + 130KJ 4.83 x 103 kJ 15. How many grams of H2 would be needed to produce 260. KJ of energy? 2H2 + O2 → 2H2O + 130KJ 8.08 g 16. 20. mol H2 reacts with 8.0 mol O2 to produce H2O.
The pictures below give an example of these motions. The infrared spectrometer can cause these motions/vibrations to occur in the bonds by hitting the compound in question with light in the infrared range of the electromagnetic spectrum. Vibrations in bonds occur between 8 x 10-5 cm and 1 x 10-2 cm, and the typical IR spectrometer operates in frequencies between 5 x 10-4 cm and 25 x 10-4 cm or 4000 cm-1 to 400cm-1. Frequency is reported as either wavenumber (denoted by ν̃) or cm-1. ν̃= 1/ λ, or wavenumber is equal to one over wavelength.
EXPERIMENTAL DATA: Table 1: Measured values from experimental data Resistor Measured Value 101 Ω Capacitor 1 μF Amplitude of voltage 5v Phase difference 58.752º Peak to peak voltage 10 v Amplitude of current 2.53 mA ANSWERS TO THE POST LAB REPORT: Q. 1. Dividw the amplitude of the signal generator voltage measured by the oscilloscope by √ and compares it with the measured value by voltmeter. Answer: Here given, Vm = 5 V Dividing Amplitude of voltage Vm by √2, 5 √2 = 3.54 Comment: Both values were not matching. There have more than 10% discrepancy.
Section 13-1: Sound Waves -When a tuning fork is hit, the prong swings to the right and the molecules are pressed closer together. compression-the region of high molecular density and air pressure -When the prong moves to the left, the molecules to the right spread apart. rarefaction-area of low air pressure and density -As the tuning fork continues to vibrate, it sends out a series of compressions and rarefactions in all directions like ripples in a pond. -Sound waves are longitudinal. audible sound waves-what humans hear; between 20 and 20,000 Hz infrasonic-less than 20 Hz ultrasonic-higher than 20,000 Hz; used to produce images inside the body because short wavelengths are easily reflected off a small object ex.-Dolphins use short
A. 1.99 x 10-25 B. 9.55 x 10-25 C. 6.62 x 1016 D. 1.51 x 10-17 E. 1.51 x 10-26 4. Of the following transitions in the Bohr hydrogen atom, the __________ transition results in the emission of the highest-energy photon. A. n = 3 n
4Below is the high resolution 1H NMR spectrum of Compound G [pic] This compound contains C, H and N atoms. 1 How many peaks are there in the first signal (past the TMS from the right) and what can be concluded from this? 1½ marks 2 How many peaks has the second signal split into, and what can be concluded from this? 1½ marks 3 Determine the semi-structural formula of compound G and name the compound. 2 marks 4 Draw the structural formula of Compound G. 1 mark 5 Using the chemical shift correlation for 13C NMR, predict the number of peaks for Compound G and draw in the position of the peaks on the blank spectrum below, annotating each peak with its corresponding structure.
It can actually heat the lead used in the older models. This could cause cardiac tissue damage in patients. The lead acts as a conductor to the radio frequency energy. The studies have shown a wide range in heating after an MRI. (Ahmed, et al., 2013) The gradient magnetic field comes about by the actual process of the MRI.
Which of the following is a trace element that is required by humans and other vertebrates? A) nitrogen B) calcium C) iodine D) sodium E) phosphorus 3) Each element is unique and different from other elements because of the number of protons in the nuclei of its atoms. Which of the following indicates the number of protons in an atom's nucleus? A) atomic mass B) atomic weight C) atomic number D) mass weight E) mass number 4) Calcium has an atomic number of 20 and an atomic mass of 40. Therefore, a calcium atom must
The PCb with 4 holes mounted and 6 holes mounted boundary conditions were analysed and as expected the 6 hole mounted condition yielded higher natural frequency. Experimental: A fixture was designed to mount the PCB on to the vibration shaker. The fixture design was carried out with the consideration that the natural frequency of the fixture (3210 Hz) is well above the maximum frequency (2000 Hz) of the test spectrum. The PCB was mount on the shaker and the response of the PCB was measured using piezoelectric accelerometer. The peak amplification of the accelerometer output provided the estimate of the natural frequency of the PCB.