Where were the galaxies last year?

Physics

1 answer:

barxatty [35]4 years ago

7 0

Answer:

Explanation:

A later study in 2012 found a cluster of galaxies beginning to form 600 million years after the Big Bang. Another study in 2012 called the Extreme Deep Field honed in on the center of the HUDF and detected galaxies forming just 450 million years after the Big Bang.

When did we discover another galaxy?

The Andromeda nebula was really the Andromeda galaxy. This discovery implied that the other, even fainter, spirals were probably also galaxies even farther away. Hubble published his work in 1929 and changed forever our view of the universe. Astronomers no longer thought our galaxy was the entire universe.

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A block attached to a spring with unknown spring constant oscilates with a period of 4.2 s. Parts A to D are independent questio

Solnce55 [7]

Answer:

Explanation:

A )

Th expression for time period for a spring -mass system is as follows

T = 2π $\sqrt{\frac{m}{k} }$

So if mass is doubled , Time period will be √2 or 1.414 times or 5.9 s

B )

If the mass is halved , time period becomes 1 / √2 times or .70 times or 3.0 s

Time period does not depend upon the amplitude of oscillation . So in this case time period will be unchanged ie 4.2 s

D )

As per the formula above , if spring constant k is doubled , time period will be 1 / √2 times or .70 times or 3.0 s

8 0

3 years ago

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A car is traveling at 20 km in 15 minutes. What is its average velocity

yarga [219]

The velocity is 4374.45 m/s.
I got the answer by using v=d/t.
20,000meters / 25min= 4,374.45 m/s.

7 0

2 years ago

Given: Saturated air changes temperature by 0.5°C/100 m. The air is completely saturated at the dew point. The dew point has bee

erma4kov [3.2K]

Answer:

Explanation:

Given

saturated air temperature by $0.5^{\circ}C/100 m$

Dew point temperature is given by $t=2^{\circ}C$

Dew point is defined as the temperature after which air no longer to uphold the water vapor fuse with it and some water vapor may condense to a liquid.

air continues to rise for 1400 m

i.e. change in temperature would be $\Delta t =\frac{0.5}{100}\times 1400=7^{\circ}C$