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Vibrations Engineering:  If the pendulum has a 1 second period of oscillation on earth, what is its period of oscillation on the moon? Take the gravitational acceleration at the surface of the moon as 1.62 meters per second squared. (Express the final answer in 4 significant digits)

b. 1.67 m O c. 0.63 m O d. 0.79 m O Q2/What is the speed of sound in air at 20 * ?degrees Celsius a. 5960m/s O b. 1540m/s O c. 331m/s O d. 343.62m/s O هذا السؤال مطلوب Q1/What is the minimum angle at which a light ray is reflected back into a material and ?cannot pass into the surrounding medium

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An ultrasonic sensor is installed at the top of a tank to measure the level water inside it. If the range of the measurement is 200 to 800 mm from the top of the tank, what is the fastest sampling time (in millisecond) that can be implemented? Use a speed of sound of 340 m/s. a. 0.59 C. 0.89 b. 0.72 d. 1.2

QUESTION FIVE Kindly answer correctly. Please sho all the necessary steps

Please help me with this chem subject

A farsighted eye is corrected by placing a converging lens in front of the eye. The lens will create a virtual image that is located at the near point (the closest an object can be and still be in focus) of the viewer when the object is held at a comfortable distance, usually taken to be 25.0 cm. If a person has a near point of 79.5 cm, what power reading glasses should be prescribed to treat this hyperopia? Assume that the distance from the eye to the lens is negligible.

How is a stethoscope used to identify and test abnormal noises from a petrol engine? (40 - 60 Words)

https://pubmed.ncbi.nlm.nih.gov/32521345/ In the literature review, they should present the system installed and the main results obtained. In other words, the enhancement due to the installed system. They have to define the system used in this study. (the report talking about ventilation) pls in briefly Don’t using chatgpt please urgent i will give u like

material mechanics

Question 4

Rocket is presented with 20 Harbulary Batteries, 10 of which are real and 10 of which are fake. He attempts to detect, via visual inspection, which batteries are genuine. Of the 10 genuine ones, he correctly decides that all 10 are real. Of the fakes, he erroneously decides that 2 are real. Calculate the appropriate values to indicate Rocket’s sensitivity and criterion in detecting real batteries.

https://www.sciencedirect.com/science/article/abs/pii/S0965997822001569 In the literature review, they should present the system installed and the main results obtained. In other words, the enhancement due to the installed system. They have to define the system used in this study. (the report talking about ventilation) pls in briefly Don’t using chatgpt please urgent i will give u good feedback

Select atleast two testing devices from among the categories (you may go beyond two). Discuss its application and methods of use. a. testing for speed (Tachometer), b. Testing of Air Consumption (Air-box method/viscous-flow meter), c. testing of exhaust smoke (Bosch/Hartridge/PHS), d. testing of exhaust emission (flame ionization detector/spectroscopic analyzers/gas chromatography) e. testing of torque (absorption dynamometer/transmission dynamometer).

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A frame consists of two members (ABC and DC) and two identical pulleys with radii r = 3 in. The frame supports an applied force F = 2900 lb, and is held in equilibrium by fixed pins at A and D and by pins at points B and C. The dimensions of the frame are given as L = 30 in and h 26.25 in. Determine the support reactions at pins A and D and the force components at pin B. hemm Note: Express answers as magnitudes only and ignore signs/directions. 1|--- A B D D — i — i — C r F

Subject : engineering design - DFMA

Q4: Answer the following: a. What are the uses of Liquid Penetrant Test? b. List the uses and limitations of magnetic particle inspection. c. Sketch a result of MP testing for a defected component. d. Describe briefly principles, uses and applications of UT. e. Explain the uses of visual inspection. f. List four equipment used in visual inspection testing and give one equipment sketch.

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(3.3) What are some of the common sources of indoor noise pollution, and how can noise levels be assessed and controlled in buildings? Note that this question is asking for two aspects, one is noise assessment and the other one is noise control.

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quality control

Given that your application requires high precision measurements, and you have varieties of a sensor type having the following different magnitude ratios M at your disposal. Pick the best sensor. A. M = 0.70 B. M = 1.50 C. M = 5.01 F. M = 10.00 G. 1.11 H. 0.65 D. M = 1.99 I. 4.21 E. M = 0.98 J. 0.67

What type of CAD software could be used to test the medical scaffold made out of TPU that will be printed using stereolithography (SLA). The medical scaffold will be surgically implanted around the pancreas to enable the infusion of Islet beta cells which are encapsulated within the scaffold to provide diabetic patients with a functional pancreas. E.g. hydrostatic pressure testing/torsion tests What other type of physical testings should be taken?  E.g. Brunauer–Emmett–Teller (BET) test to check the porosity of the material