Question A 72 kg skydiver can be modeled as a rectangular "box" with dimensions 18 cm × 44 cm × 180 cm . If he falls feet first, his drag coefficient is 0.80. What is his terminal speed if he falls feet first? Use ρ = 1.2 kg/m3 for the density of air at room temperature.

pls help for the all equation fusion is 80 calig A copper calorimeter whose mass is 250 g contains 700 g of water at 25°C. When 25 g of a certain metal at 98°C is immersed in the water, the resulting temperature is 30°C. What is the specific heat of the metal? The specific heat of copper is 0.093 callg If 8000 cal of heat is needed to change the temperature of a certain amount of ice at -25°C to steam at 135°C, determine the mass of the ice. The specific heat of ice is 0.50 callg Cº while its heat of fusion is 80 cal/g. The specific heat of steam is 0.46 callg Cº while its heat of vaporization is 540 cal/g. nmand by means of a

(1 point) Determine the average rate of change of the following function between the given values of the variable: f(x) = x4 - - X; x = -2, x = 3 Average rate of change = .

Question Suppose three point masses are placed in the xy-plane as follows (assume coordinates are given in meters): mi = 5 kg, placed at (-2, -3) m2 = 3 kg, placed at (2,3) 'm3 = 2 kg, placed at (-3, -2) Find the center of mass of the system. Write your answer as an ordered pair Provide your answer below:

let f(x)= x^2-5, g(x)= 2x^3+x and p(x)= f(x)g(x). a) computedp/dx b) compute f'(x)g'(x)

10. A box is lying on top of a trailer, which is parked on the road. According to Newton's third law, what is the reaction force to the gravitational pull of the box on the trailer? The normal force of the trailer on the box The gravitational pull of the trailer on the box The gravitational pull of the trailer on Earth The normal force of the road on the trailer The weight of the trailer The normal force of the trailer on the road The gravitational pull of the box on Earth The weight of the box

Suppose that a company is developing a new touch-screen cell phone. Historically, 70% of their new phones have resulted in high consumer demand, whereas 30% have resulted in low consumer demand. The company has the decision of choosing between two models with different features that require different amount of investment and have different sales potential. Estimated profit/loss are shown in the payoff table below. State of Nature High demand, ($) Low demand, ($) Model 1 300,000 -40,000 Model 2 275,000 -15000 Now suppose the firm conducts a market research study to obtain sample information and better understand the nature of consumer demand. The market research cost $10,000 Analysis of past market research studies, conducted prior to introducing similar products, has found that the survey response will be either high or low. There is a 69% chance that the survey will return a high survey response (results) and there is a 31% chance that the survey will result in lo-demand response (results). The relevant conditional probabilities are as follows: P (high consumer demand, high survey response = 0.913) P (low consumer demand, low survey response = 0.087) P (high consumer demand, high survey response = 0.226) P (low consumer demand, low survey response = 0.774) Calculate the expected value of sample information (EVSI). Develop a decision tree and analyze using QM for Windows. Determine the optimal solution.