I am assuming you mean the density is 4.0 g/ cm3 and the displaced H20 is 3.0 cm3 (3 mls when converted to cm3). Look at the units that should tell you how to solve the problem. Your answer must in g (mass), thus you take 4.0 g/cm3 times 3.0 cm3. Units are treated like numbers, for example 3 times 1/3 equals 1 - both 3's cancel leaving only 1 time 1 which equals 1. In this case you have 4 g/cm3 times 3.0 cm3, cm3's cancel leaving only g as your unit at the end. The rest is for you to solve! Enjoy your problem. I am assuming you mean the density is 4.0 g/ cm3 and the displaced H20 is 3.0 cm3 (3 mls when converted to cm3). Look at the units that should tell you how to solve the problem. Your answer must in g (mass), thus you take 4.0 g/cm3 times 3.0 cm3. Units are treated like numbers, for example 3 times 1/3 equals 1 - both 3's cancel leaving only 1 time 1 which equals 1. In this case you have 4 g/cm3 times 3.0 cm3, cm3's cancel leaving only g as your unit at the end. The rest is for you to solve! Enjoy your problem.
1. Put your nose on the same height as the source of the smell and about 10-30cm away 2. make some wind with your left arm, so that the fumes go toward your nose 3. inhale
F=P*A F (Force)=? P (Pressure)=2000kPa (*1000=2000000Pa) A (Area)=Pi*r^2 A (Area)=Pi*0.15m^2 (radius=0.15m, from 30cm diameter) If max the lift can handle is 2000kPa on 30cm piston, then: Max Force = F = P*A F=2000000*(Pi*0.15m^2) N F=141371.669 N mass = weight / gravity m = w / g let w equal F = 141371.669 N g = 9.8 m/s/s m = 141371.669 / 9.8 m = 14425.681 kg Therefore maximum mass the lift can handle = 14425.7kg (14.3 tonne)
1. Put your nose on the same height as the source of the smell and about 10-30cm away 2. make some wind with your left arm, so that the fumes go toward your nose 3. inhale
To do this, you need to know what density is. Mathematically, density is mass divided by volume or: D = m/v Now all we need to do is replace the density and mass variables to find the volume. D = 2.70 g/cm3 m = 3.057 kg = 3057 g 2.70 = 3057/v v = 1130 cm3
If you are asking about which radiation is the most penetrating, gamma rays are the "strongest" in that regard.Gamma rays are electromagnetic radiation of the highest possible energy (frequency). It has a higher frequency (shorter wavelength) than even X-rays. It has the greatest ability to penetrate materials. A gamma ray can go through a hundred people with ease.It takes a very large mass to be effective in stopping gamma radiation. Any material can be used as shielding but, in general, the more mass, the better. It takes a lot more water than lead to stop gamma rays because water is much less dense than lead, but water is cheaper. Stone, concrete, or soil is very cost effective.Any of these radiation may be emitted from the nucleus of an atom during radioactive decay (depending on the type of decay). They all ionize material as it slows them down. Both alpha and beta radiation are particulate radiation, as they are composed of particles.Alpha particles are helium-4 nuclei, composed of two protons and two neutrons. These don't travel very far in air, and a sheet of paper will stop them.A Beta particle is a high energy electron or positron. These have a modest ability to penetrate, but a sheet of aluminum foil will stop them.
30cm is about 12 inches or 1 foot in length
15,000 cm3
If the object hsa sunk the volume is equal to the volume of water displaced If the tank is 50 cm high, the volume is 150x100x (36.2-30) = 93000 cubic centimeters
30cm = 300mm
about 30cm about 30cm
27000 mL
30cm = 0.3m
It is 90,000 mm
30*30*30 cm3 or 27,000 cubic centimetres.
It's about 30cm. It's about 30cm.
5
30cm/5dm = 3dm/5dm = 3/5