subject
Physics, 15.04.2020 05:21 ordonez9029

A clump of matter does not need to be extraordinarily dense in order to have an escape velocity greater than the speed of light, as long as its mass is large enough. You can use the formula for the Schwarzschild radius Rs to calculate the volume 43πR3s inside the event horizon of a black hole of mass M. Part A What does the mass of a black hole need to be in order for its mass divided by its volume to be equal to the density of water (1g/cm3)?

ansver
Answers: 3

Another question on Physics

question
Physics, 21.06.2019 20:30
Air enters a compressor operating at steady state at 1.05 bar, 300 k, with a volumetric flow rate of 93 m3/min and exits at 12 bar, 400 k. heat transfer occurs at a rate of 15.5 kw from the compressor to its surroundings. assuming the ideal gas model for air neglecting kinetic potential energy effects, determine the power in put in kw.
Answers: 2
question
Physics, 22.06.2019 01:00
An object is 10. cm from the mirror, its height is 3.0 cm, and the focal length is 2.0 cm. what is the image height? (indicate the object orientation by including the + or - sign with the answer.) hi = cm +1.33 -1.33 +0.75 -0.75
Answers: 2
question
Physics, 22.06.2019 14:20
Antireflective coatings on solar cells are often made by applying a thin film of silicon nitride (sinx), which has an index of refractive of 1.2, on the top of the silicon solar cell, which has a refractive index of about 3.5. however, the sun emits radiation of various wavelengths which the solar cell absorbs, and the antireflective coating can only absolutely minimize the reflection of one of these wavelengths. the coating thickness is chosen to reduce the reflection of green/yellow light (e = 2.2 ev), which is the most intense color in the solar spectrum (shown below). which of the following coatings would minimize reflection of green/yellow light? the answer is 820 nm how? what is the angular width of the central maximum of an electron traveling at 2 x 108 m/s going through a single slit of width 1 mm.
Answers: 1
question
Physics, 22.06.2019 15:40
Apotter's wheel moves uniformly from rest to an angular speed of 0.20 rev/s in 32.0 s. (a) find its angular acceleration in radians per second per second. rad/s2 (b) would doubling the angular acceleration during the given period have doubled final angular speed?
Answers: 1
You know the right answer?
A clump of matter does not need to be extraordinarily dense in order to have an escape velocity grea...
Questions
question
Computers and Technology, 25.03.2021 19:00
question
Mathematics, 25.03.2021 19:00
question
Mathematics, 25.03.2021 19:00
question
Mathematics, 25.03.2021 19:00
Questions on the website: 13722367