Compute for the scale height of a certain planet's atmosphere (the height the atmosphere would have if its density stayed constant instead of decreasing with altitude.) express your answer in meters. No unit is required for the final answer. radius of the planet = 6,371 km : density of air = 1.21 kg/m^3 Please answer asap.
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- A student from Isabela State University launched a rocket that has a payload of atmospheric sensors. The payload contains an altimeter and a digital barometer. From one of the University’s class room where they built a data receiving area, the altimeter sends 10 values of altitude, 5600 ft, 5000 ft, 4600ft, 4100 ft, 3800 ft, 3500 ft, 3150 ft, 2900 ft, 2300 ft, and 1300 ft. But the data of the barometer wasn’t sent because of a circuit anomaly. But the programmer assured that it will be recorded in the memory inside the payload’s microcontroller. Assuming the air density to be 1.18 ??/?3, what pressure we should expect depending on the data sent by the altimeter?The population of India can be modeled by the function P(t) = 1462(1 +0.0177) where P(t) measures the population in millions andt represents the number of years since 2000. 1. Using this model, what was the population of India in 2009? 2. Predict the population of India in 2019. 3. If this growth rate continues, in what year will the population of India reach 2 billion people? Hint:A high tech company uses a satellite to measure the size of features on the surface of the earth. They use this technology to measure a particular rectangular field and find it's length to be 444 ± 1.8 in meters and it's width to be 198 ± 1.63 in meters. They plan to report the perimeter (sum of two lengths and two widths) of the field as P± SP in units of yards. (1 meter = 1.094 yards) What is SP?
- Express the answer in standard scientific notation with the appropriate number of significant figures. The diameter of a helium nucleus, 0.000 000 000 000 003 8 m. _____ x 10 ^___mAn expression for buoyant force is FB = ρgV, where FB has dimensions [MLT−2], ρ (density) has dimensions [ML−3], and g (gravitational field strength) has dimensions [LT−2]. The correct interpretation of V is that it represents velocity or volume?Calculate the density of an object in g/cm3 if 15 Newtons occupy a volume of 1452 ft3 and the value of acceleartion due to gravity is 9.06 m/s2. Solve by using dimensional analysis in cancellation of unit. Final answer in two decimal. Please show your complete solution and write clearly. Thank you.
- A hot tub with a surface area of 28 ft2 is filled with water to a depth of 29 in . Hint: volume is calculated as area × height (A × h). A) What is the volume of water in the tub, in liters? Express your answer to two significant figures and include the appropriate units. B) How many kilojoules are needed to heat the water from 59∘F to 103 ∘F? Express your answer to two significant figures and include the appropriate units. C) If the hot-tub heater provides 5900 kJ/min, how long, in hours, will it take to heat the water in the hot tub from 59∘F to 103∘F? Express your answer to two significant figures and include the appropriate units.A typical oil molecule has an effective diameter of 0.25 nm. If 25 L (1 L is the same as 1000 cm3) of oil is spilled on a lake, and if the oil is spread so that it is only a single molecule thick, what will be the approximate area of the oil slick? Assume that the oil molecules are just touching.The density of aluminum is 2.7 g/cm3g/cm3. What is the mass of a cube of aluminum that is 5.000 cmcm on a side? (Recall that density is mass divided by volume.)
- (a) There are about 3 × 10 25 molecules of air in each cubic meter of the atmosphere. If each molecule had its own cube of space, what is the length of one side of the cube? (b) How many times greater is the length of a side of the cube than the length of a molecule that is about 3 × 10 -10 m long?The length of cell A is 9×10^6 m. The length of cell B is 0.0000003 m. What is the ratio of cell A's length to cell B's length? Use pencil and paper. Is it easier to find the ratio when the numbers are expressed in scientific notation or in standard form? Explain your reasoning.You will deal with a spherical shell -- a ball, where all the mass is on the surface. Inside is vacuum. (This is difficult to draw other than a circle.) Calculate the surface density (areal density) in g/cm2. You need these numbers: R = 27 cm M = 21,000 grams