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Expectant mothers many times see their unborn child for the first time during an ultrasonic examination. In ultrasonic imaging, the blood flow and heartbeat of the child can be measured using an echolocation technique similar to that used by bats. For the purposes of these questions, please use 1500 m/s as the speed of sound in tissue. I need help with part B and C To clearly see an image, the wavelength used must be at most 1/4 of the size of the object that is to be imaged. What frequency is needed to image a fetus at 8 weeks of gestation that is 1.6 cm long? A. 380 kHz B. 3.8 kHz C. 85 kHz D. 3.8 MHz If the rate of formation (also called rate of production) of compound C is 2M/s in the reaction A --->2C, what is the rate of consumption of A Help someone please!! A middle school has 470 students. Regina surveys a random sample of 40 students and finds that 28 have cell phones. How many students at the school are likely to have cell phones? A. 132 students B. 188 students C. 329 students D. 338 students Please include ALL work! Calculate the density of the following material.1 kg helium with a volume of 5.587 m700 kg/m5.587 kg/m0.179 kg/m The last dividend paid by Coppard Inc. was $1.25. The dividend growth rate is expected to be constant at 27.5% for 3 years, after which dividends are expected to grow at a rate of 6% forever. If the firm's required return (rs) is 11%, what is its current stock price Which of the following is not an antioxidant _________1) Sodium benzoate 2) Sulphur dioxide 3) Sulphite salts 4) Citric acid What is the the product of (-1 - 3i) and its conjugate? If mirror M2 in a Michelson interferometer is moved through 0.233 mm, a shift of 792 bright fringes occurs. What is the wavelength of the light producing the fringe pattern? What strategy benefits both companies and employees since it increases a company's ability to recruit and retain workers and allows employees to balance work and home life by allowing them to choose their starting and ending times, as long as they are there during a specified core period "Which of the following are covered under the Securities Exchange Act of 1934? I Registration of new issues II Stabilization of new issues III Registration of exchanges IV Registration of broker/dealers" Identify the obsession in the following sentence. "Keisha is overly concerned aboutgerms, so she spends hours wiping the surfaces of her home and washing her hands."a) spending hours wiping the surfaces of her homeb) germsc) spending hours washing her handsd) concern over germs In this activity, you will write a travel blog post in Spanish describing a trip that you have taken in the past. Include both past tenses, the imperfecto and the pretrito. Use vocabulary related to travel. Submit the response to your teacher. Why do you think Hal, Mercedes, and Charles set out for the Klondike when they were so inexperienced? Give at least 3 examples as to why they were unsuccessful. Seven Manufacturing Corporation uses both standards and budgets. The company estimates that production for the year will be 100,000 units of Product Fast. To produce these units of Product Fast, the company expects to spend $600,000 for materials and $800,000 for labor.Required:Compute the estimates for a standard cost. A lab technician is dividing a cell that has a diameter of 4.32104 4 . 32 10 - 4 millimeters. Each of the new cells has a diameter measuring exactly one half of the diameter of the original cell. Which is the diameter of a new cel of a portfolio. The beta of four stocksG, H, I, and Jare , , , and , respectively. What is the beta of a portfolio with the following weights in each asset: LOADING...? What is the beta of portfolio 1? An investor holds a 10 year bond pays a coupon rate of 9%. The yeid to maturity of the bond is 10% . The bond is trading: Mark, the sales manager at Lance Motors has called for a meeting with all his sales representatives. He wants to give them feedback, and set new guidelines regarding their annual targets. With reference to the transmission phase of communication, which of the following best describes Mark's role? A) Recipient B) Sender C) Messenger D) Receiver E) Decoder A more professional focus of running events started to take place during the late 1800s. The catalyst for such a professional focus emphasis occurred due to A. the number of career opportunities. B. the multitude of events that were occurring. C. television's impact on events. D. a desire to increase profits.