Space botany requires a certain pressue of 1.20 space pressure units (SPU) for the growth biomes to be succesful. If 1 SPU= 3 earth atm, what value should my tool that reads out in torr be for everything to be good? Hint: there are 3 units you should be working with.

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?

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?

Help.explain.

Gold, which has a density of 19.32 g/cm³, is the most ductile metal and can be pressed into a thin leaf or drawn out into a long fiber. (a) If a sample of gold, with a mass of 49.73 g, is pressed into a leaf of 4.500 µm thickness, what is the area of the leaf? m2 (b) If, instead, the gold is drawn out into a cylindrical fiber of radius 1.500 µm, what is the length of the fiber? km

11.31 "9l 37 docs.google.com/forms/d, :D Assume that the gravity is 10 m/s² Sin 37 = 0.6 Cos 37 = 0.8 Sin 53 = 0.8 Cos 53 = 0.6 block with 20 kg mass put on the floor. The weight of the block is .. * 20 N O 50 N O 100 N O 200 N ) 400 N Sebuah benda bermassa 10 kg diletakkan di atas bidang miring licin. Jika sudut antara bidang miring dan lantai adalah 30°. Percepatan benda ini adalah .... * O 1 m/s?

Pd Pd 1. Let's consider a toy model of nuclear fission. Suppose an nucleus of Uranium-235 (92 protons, molar weight of 235 g/mole) "splits" into two "daughter" nuclei of Palladium (46 protons each) – this is not how it really happens, but it's a very simple model that actually gives fairly accurate results. The radius of the original U-235 nucleus is about 7.4 x 10-15 m. (a) If the Pd nuclei each have half the volume of the U nucleus, which is reasonable, and they are "touching" right after the split, how far apart are their centers? (b) Using conservation of energy, what will be the sum of the kinetic energies of the Pd nuclei when they are far apart from each other? (c) That's energy of one atom undergoing fission, so what, then, is the energy released by the fission of 1 kg of U-235? Express this in Joules and also in kilotons of TNT, where 1 kt = 4.2x1012 J. (The Hiroshima bomb yielded about 15 kt) (d) How many kwh (kilowatt-hours) of energy is this, (1 kwh = 3.6x10° J), and (if…