Earth is approximately a sphere of radius 6.37 × 106 m. What are (a) its circumference, (b) its surface area, and (c) its volume?

A silver sphere with a radius of 9.9 cm weighs the same as a certain aluminum cube. How long are the sides of this cube (in cm)?

One mole of Gold (Au) atom has a mass of 197 g. We know that the density of gold is 19.30 g/cm3 in room temperature. Using those numbers, answer the following questions: a) What is the mass of a single gold atom in kg? b) Assume that gold atoms sit in a perfect cubic crystal structure. Estimate the distance between two gold atoms in meters.   c) If we have a gold cube of 6 cm on each side, how many atoms can we fit along the edge of each side of the cube?  d) What would be the mass, in kilograms, of the gold cube we discussed in part (c) (measuring 6 cm on each side)?

A Texas rancher wants to fence off his four-sided plot of flat land. He measures the first three sides, shown as A, B, and C in the figure below, where 44.411 km and = 749, y+A+B+C + D = 0 N C-3.02 km D-7 km D 9- /0= ? с 75 A = 4.40 km 24° A B 16° W S B=2.48 km E He then correctly calodates the length in kilometers and orientation in degrees west of south of the fourth side D. What is his rasul in kilometers and degrees west of south7 kom * west of south

Help with physics review problem

The mass of the Moon is 7.35 x 1025 grams, and its mean density is 3.341g/cm3. Calculate the volume of the moon in the following units: (a) In cubic centimeters (cm3) (b) Liters

The radius of an atom of gold (Au) is about 1.35 Å. How many gold atoms would have to be lined up to span 4.0 mm? Express your answer using two significant figures.

Explorers in the jungle find an ancient monument in the shape of a large isosceles triangle as shown in the figure below. The monument is made from tens of thousands of small stone blocks of density3 633kg/m3. The monument is16.7m high and68.5m wide at its base and is everywhere3.70m thick from front to back. Before the monument was built many years ago, all the stone blocks lay on the ground. How much work did laborers do on the blocks to put them in position while building the entire monument?Note: The gravitational potential energy of an object-Earth system is given byUg=MgyCM, whereMis the total mass of the object andyCMis the elevation of its center of mass above the chosen reference level.J

What is the area of a circle which has a diameter equal to 3.138 cm? Hint The area is cm².

Find the order of magnitude of the following physical quantities. (a) The mass of Earth’s atmosphere: 5.1×1018kg;  (b) The mass of the Moon’s atmosphere: 25,000 kg; (c) The mass of Earth’s hydrosphere: 1.4×1021kg;  (d) The mass of Earth: 5.97×1024kg  (e) The mass of the Moon: 7.34×1022kg;  (f) The Earth–Moon distance (semi major axis): 3.84×108m;  (g) The mean Earth–Sun distance: 1.5×1011m;  (h) The equatorial radius of Earth: 6.38×106;  (i) The mass of an electron: 9.11×10−31kg;  (j) The mass of a proton: 1.67×10−27kg;  (k) The mass of the Sun: 1.99×1030kg.   I need the solutions in these questions please.