The weight of Earth's atmosphere exerts an average pressure of 1.01 ✕ 105 Pa on the ground at sea level. Use the definition of pressure to estimate the weight of Earth's atmosphere (in N) by approximating Earth as a sphere of radius RE = 6.38 ✕ 106 m and surface area A = 4?RE2. N

mass (g) diameter (cm) height (cm) volume (cm^3) 16.20 1.21 5.30 ? 43.98 1.80 6.41 ? 79.49 2.11 8.49 ? 139.1 2.59 9.69 ? 1. The slope of your line is the density of the material of which your cylinders are made. What is this value, including units? 2. Table 2 contains a list of materials, along with their densities/ Based on your value in Question 1, what is your cylinder material? Material                                                     Density (g/cm^3) maple 0.77 polypropylene 0.90 polystyrene 1.03 polyamide  1.15 acrylic 1.17 polyurethane 1.23 phenolic 1.32 polyvinylchloride 1.37 poly tetrafluoroethylene (teflon) 2.20 aluminum 2.71

What is the pressure of the gas in the cylinder, in kPa (kiloPascal)? h = 0.620 m, Pmercury = 13,600 kg/m3, 1.0 atm = 1.00 x 105 Pa = 100 kPa, and g = 10.0 m/s?. Your answer needs to have 3 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement. Mercury. p = 13,600 kg/m² Pen

The hydraulic diameter of a rectangular duct is calculated using the equation D = 4, where Dr is the hydraulic diameter, A is the cross-sectional area of the duct and p is the perimeter of the duct. If the dimensions of the rectangular duct are a = 26 cm+0.4 mm, and b = 33 cm +1.3 mm, what is the uncertainty of D, in percentage format? Enter the answer as a numerical value without any sign. Retain 3 significant figures. a

You have three objects of varying shapes and sizes: Object 1 is a rectangular block of tin. Object 2 is a cube of aluminum. Object 3 is a sphere of copper. a. the density of tin is 5.75g/cm2. What is the mass of object 1 in kg if the rectangular block has a volume of 1.34L? b. what is the volume in cubic inches of object 2 if the cube of aluminum 7.58 inches on a side? c. what is the mass in kg of object 2? the density of aluminum is 2.70g/cm3 d. what is the volume in cm3 of object 3 if the sphere of copper has a diameter 8.62cm? the volume of the sphere is 4 {pi}^3/3 e. what is the mass in kg of object 3? Copper has a density of 8.96g/cm3

An airplane passenger has a volume V1 of air in his stomach just before the plane takes off from a sea-level airport. a. What volume will this quantity of air have at cruising altitude at the same temperature (body temperature), in terms of V1, the pressure on the ground P1, and the cabin pressure at cruising altitude P2?  b. What is this volume, in cubic centimeters, if the initial volume is 95 cm3 and the cabin pressure drops to 7.50 × 104 Pa when the plane is at cruising altitude?

What is the approximate mass of the air in our 10 m × 12 m × 4 m physics lab? The density of air is 1000 g/cm3. Convert density to kg/m^3

The Statue of Liberty in New York City is approximately 305 ft305 ft tall. How many U.S. dimes would be in a stack of the same height? Each dime is 1.35 mm1.35 mm thick. number of dimes:     Each dime has a mass of 2.268 g.2.268 g. How much would the stack of dimes from the previous question weigh? mass:   g What is the value, in dollars, of the same stack of dimes? value:   dollars The 2017 U.S. gross domestic product (GDP) was valued at 19,390,604,000 dollars.19,390,604,000 dollars. How many Statue of Liberty‑height stacks of dimes are needed to match the GDP in value? number of stacks:

A helium balloon (in the shape of a sphere) has radius 7.10 m. For the density of air, please use 1.29 kg/m^3, and for Helium, use .179 kg/m^3 Part A How much additional mass (payload) could this balloon lift? You should assume the balloon's skin, plus other parts of the balloon's structure have a total mass of 900 kg. Note however that this number does NOT yet include the mass of the helium filling the balloon, which you will need to account for! Express your answer using two significant figures. ▸ View Available Hint(s) m = for Part A for Part A undo for Part A redo for Part A reset for Part A keyboard shortcuts for Part A help for Part A Submit Constants kg

E 2. What is the smallest number of whole logs (density = 765 kg/m³, radius = 0.084 m, length = 3.27 m) that can be used to build a raft that will carry 6 people, each of whom has a mass of 80.0 kg? logs MAR 2 27 888 F4 R % 5 T G tv 6 MacBook Air & 7 H U 8 A 9 DD W F10 zoom X KL K P by mi 04 M quies or rne puffer s