Answer:
Explanation:
So lead has a density of 11.34 g/cm^3 according to a quick google search. If this is not the value you are using, just replace what you do use where I put 11.34
knowing the density, if we knew the volume we could find the mass by unit conversion since g/cm^3 * cm^3 = g, so we would multiply the density by the volume. And the question gives us the means to find the volume.
Volume of a cylinder is area of its base times the height. Area of its base, a circle (since it's a cylinder) is π*r^2 where r is the radius and π is roughly 3.14. I will leave π as the symbol until the end so it's easier to deal with.
So volume = area * height = πr^2*h = π4^2*10 = 160π (I moved pi to the back). It's units are cm^3 since both measurements were in cm. You can feel free to multiply π by 160 now if you like. Anyway, now that we have the volume we multiply it by the density. so 160π cm^3 * 11.34 g/cm^3 = 1814.4π g. If you multiply that by 3.14 for π you get 5697.216 g. And there's the mass. Let em know if there was something you didn't understand.
Answer:
hi
Explanation:
chemistry the branch of science that deals with the identification of the substances of which matter is composed; the investigation of their properties and the ways in which they interact, combine, and change; and the use of these processes to form new substances.
Science the intellectual and practical activity encompassing the systematic study of the structure and behaviour of the physical and natural world through observation and experiment.
Calculate the mass defect and nuclear binding energy of an atom ... To convert to joules per nucleon, simply divide by the number of nucleons.
Phagocytosis, the amoeba surrounds the food particle and engulfs it. Then it's stored for when the cell needs food.
Answer:
2.The cooling effects of more indirect sunlight cause autumn and winter. Because of the Earth's approximately 23.5º tilt, the seasons in the Northern and Southern Hemispheres are reversed, about six months apart from each other.
3.In North America, around June 21, Earth tilts on its axis toward the Sun. That means that at the northern summer solstice, North America will experience summer, and winter will start in in the Southern Hemisphere. Winter Solstice. Around December 21, the Northern Hemisphere tilts the farthest away from the Sun.
Explanation:
