Under some circumstances, a star can collapse into an extremely dense object made mostly of neutrons and called a neutron star. The density of a neutron star is roughly 10¹4 times as great as that of ordinary solid matter. Suppose we represent the star as a uniform, solid, rigid sphere, both before and after the collapse. The star's initial radius was 6.0x105 km (comparable to our sun); its final radius is 16 km. For related problemsolving tips and strategies, you may want to view a Video Tutor Solution of Anyone can be a ballerina. Part A If the original star rotated once in 29 days, find the angular speed of the neutron star. Express your answer in radians per second. ΨΕΙ ΑΣΦ W2 = ? rad/s

Nanotechnology, the field of building ultrasmall structures one atom at a time, has progressed in recent years. One potential application of nanotechnology is the construction of artificial cells. The simplest cells would probably mimic red blood cells, the body’s oxygen transporters. Nanocontainers, perhaps constructed of carbon, could be pumped full of oxygen and injected into a person’s bloodstream. If the person needed additional oxygen—due to a heart attack or for the purpose of space travel, for example—these containers could slowly release oxygen into the blood, allowing tissues that would otherwise die to remain alive. Suppose that the nanocontainers were cubic and had an edge length of 25 nanometers. What is the volume of one nanocontainer? (Ignore the thickness of the nanocontainer’s wall.)

(III) You are lying on a beach, your eyes 20 cm above the sand. Just as the Sun sets, fully disappearing over the horizon, you immediately jump up, your eyes now 150 cm above the sand, and you can again just see the top of the Sun. If you count the number of seconds(= t) until the Sun fully disappears again, you can estimate the Earth’s radius. But for this Problem, use the known radius of the Earth to calculate the time t.

What is the result of the Poisson effect on mechanics materials?

1. How did Galileo’s invention of the telescope support Copernican theory?   2. How has the changing technology increased our understanding of the universe?

Nanotechnology, the field of building ultrasmall structures one atom at a time, has progressed in recent years. One potential application of nanotechnology is the construction of artificial cells. The simplest cells would probably mimic red blood cells, the body’s oxygen transporters. Nanocontainers, perhaps constructed of carbon, could be pumped full of oxygen and injected into a person’s bloodstream. If the person needed additional oxygen—due to a heart attack or for the purpose of space travel, for example—these containers could slowly release oxygen into the blood, allowing tissues that would otherwise die to remain alive. Suppose that the nanocontainers were cubic and had an edge length of 25 nanometers. Suppose that each nanocontainer could contain pure oxygen pressurized to a density of 85 g/L. How many grams of oxygen could be contained by each nanocontainer?

How Johnson's equation of column differs from the Euler's equation? Explain briefly.

You are considering purchasing a compact washing machine, and you have the following information: The Energy Guide claims an estimated yearly electricity use of 350 kW-hrs, based on 8 loads of laundry being washed per week. The Energy Guide claims an estimated yearly operating cost of $38. This estimate is based on $0.1065 per kW-hr, and eight loads of laundry being washed per week. Local electricity costs $0.086 per kW-hr. You wash four loads of laundry per week. Based on this information, first calculate the energy that would be used by this compact washing machine in a year. Then calculate the yearly energy cost. Group of answer choices $3.27 $19.00 $15.34 $178.4

Current Attempt in Progress Thetemperature of a Pyrexdisk is changed from 14.2°C to 62.8°C. Its initial radius is 8.76 cm; its initial thickness is 0.59 cm.Take these data as being exact. What is the change in the volume of the disk? Assume a = 3.2x10/c". Number Units This ariswer ha5 no units * (degrees) m kg Attempts: 0ot Save for Later m/s mis2 N kgm/s or Ns N/m*2 or Pa m*3 times

KINEMATICS OF PARTICLES " FREE FALLING BODIES " Please help me solve this problem, I am not sure about my answer include solution so that i Could correct if my solution was wrong Thankyou!