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- The number density of air in a child's balloon is roughly the same as sea level air, 1019 particles/cm3. If the balloon is now 26 cm in diameter, to what diameter (in km) would it need to expand to make the gas inside have the same number density as the ISM, about 1 particle/cm3? Answer in KmPl:6: this was all information that was given to me. If need i would need to look it up online.*These questions are sample activity in our physics lab, and I still don't get it. can you please help me understand it? if you do, thank you 1.) indicate the number significant figures are shown in each of the following: a) 425.0 b) 3.81x10^4 c) 0.00063 d) 8100 please answer with complete solution. three decimal places only
- DEMONSTRATE: As of Jan 18 2021, the 7-day average new COVID case number for Oregon was 1035. On October 17 2020, the comparable value was 342. a. What was the relative change? One-Step Calculation (Don't forget grouping): 1035 – 342 100 342 Answer: b. Pick all of the following that are true. The number of new cases has increased by about 2% since October. The number of new cases has increased by about 3% since October. O The number of new cases has about tripled in 3 months. The number of new cases is about 300% more than it was in October. The number of new cases is about 200% more than it was in October. The number of new cases has about doubled in 3 months The number of new cases is about 33% more than October.A standard altimeter indicates 20,000 ft when the ambient temperature is 40 ℉. Calculate the density . (*Incorporate both the altimeter value and temperature in the computation.) * Use the formulas given below.Wind farms in Washington have a capacity of 3075 Megawatts (mega means million remember so this is 3075000000 watts). This means if they were all operating at the same time this is how many Joules per second they would produce. a) Assume all wind farms in Washington are operating at capacity. How much energy in Kwh is produced in one hour? b) Now it is not windy all the time, so suppose only 60% of the wind farms are operating. How much energy is produced in a 7 day week by these wind farms c) An average home uses about 250 KWh for a 7 day week. How many homes can be operated by the wind farms in part b
- I need to know the number of years! There is only one part to this question. The pictures show the "Figure" and "Bar charts" tabs and the "Graph" tab says this: A curve showing the percentage of radioactive atoms remaining in a mineral sample is graphed on a coordinate plane. The horizontal axis, labeled "Age in half-lives," ranges from 0 to 6. The vertical axis, labeled "Percentage remaining," ranges from 0 to 100. The curve enters the viewing field with a negative slope at (0, 100). The magnitude of the negative slope is progressively reduced such that it is nearly horizontal as it exits the viewing field at (6, 0.02). Thank you!!Compare the following lengths using density calculations. Gold has a density of about 19.3 g/cm3. You are now given a cubed piece of gold that has a mass of 19.3 g in the form of a cube is 1 cm long on each side. If we now double the mass of gold to 38, 6 g then what would be the length of the sides of a cube that has twice this mass of gold?How would you linearize the given population vs days plot? Infected population vs days in olde town 40 35 30 25 Infected population = e0.2 days R² = 1 20 15 10 5 10 15 20 days By taking log of vertical axis By taking log of both axes By taking log of horizontal axis This plot can't be linearized Infected population
