Suppose two worlds, each having mass M and radius R, coalesce into a single world. Due to gravitational contraction, the combined world has a radius of only  3 4R.  What is the average density of the combined world as a multiple of ρ0, the average density of the original two worlds?  ρ0

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

n = 7,000 hydrogen molecules/cm3 How can you convert the density from H/cm3 to kg/cm3?

An object has density ρoriginal�original. Suppose each of the object's three dimensions is increased by a factor of 2 without changing the object's mass. By what factor will the density change?

the average density of an atom is approximately 103 kg/m3. The nucleus of an atom has a radius about 10-5 times that of the entire atom, and contains nearly all the mass of the atom.  What is the approximate density, in kilograms per cubic meter, of a nucleus?

A probe on a dwarf planet collects 5 moles​ [mol] of dust material. The​ sample, which completely fills a cube with a side length of 4 centimeter​ [cm], weighs 0.19 newtons​ [N] on the dwarf planet. The density of the material is determined to be 3160 grams per liter​ [g/L].Determine the gravity of the dwarf planet in units of meters per seconds squared ​[m/s2​].

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:

one side of the box in m 0.0196 Question 4 A loaf of bread with a volume 3,925 cm³ and density 0.248 g/cm³ is crushed in the bottom of a grocery bag into a volume of 2,254 cm³. What is the density (g/cm³) of the mashed bread? % B H N & M 8 K alt hp fio ctri f12 [ ✈ ins 6 pts pause prt sc

Suppose that a thin metal wire in the shape of a semicircle occupies the curve C, where C is the top half of the circle x² + y² = 16. The mass density of the wire is described by the function p(x, y) = x³y. Find the total mass of the wire.