Physics, 11.07.2019 00:40 cantrelate
Many of the technological advances over the last 50 - 75 years have been in the area of weaponry and warfare, such as atomic/nuclear weapons, radar, biological weapons, etc. these advances have both positive and negative aspects. which statement describes a negative aspect of these advances? a) the advances in body armor protect individuals and prevent deaths that previously could not be prevented. b) advances in communication and transportation have made it easier to prevent attacks and rescue those who need be rescued. c) advances in satellite imagery have made desired targets easy to hit with little destruction of innocent life and property. d) the lingering radiation after detonation of atomic weapons destroys the land and continues to harm people and animals long after the blast.
Answers: 1
Physics, 22.06.2019 11:30
Water is siphoned from a large tank and discharges into the atmosphere through a 50-mm diameter tube. the end of the tube is b = 2.1 m below the tank bottom which is a = 7.4 m deep, and viscous effects are negligible. determine the maximum height h over which the water can be siphoned without cavitation occurring. atmospheric pressure is 101.4 kpa, and the water vapor pressure is 1.79 kpa (absolute)
Answers: 3
Physics, 22.06.2019 12:00
The sun’s mass is 2.0×10^ 30 kg, its radius is 7.0×10 5 km, and it has a rotational period of approximately 28 days. if the sun should collapse into a white dwarf of radius 3.5×10 3 km, what would its period be if no mass were ejected and a sphere of uniform density can model the sun both before and after?
Answers: 3
Physics, 22.06.2019 14:30
Explain what it means to view something from a frame of reference. provide an example that illustrates your explanation. (4 points)
Answers: 1
Many of the technological advances over the last 50 - 75 years have been in the area of weaponry and...
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