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Basile [38]
3 years ago
10

The idea that the universe began from a single point and expanded to its current size explains a large number of observations, i

ncluding those in the table below.
Observations Explained
The universe consists mostly of low-mass elements.
Cosmic microwave background is nearly the same in all directions.
Light from other galaxies shows that these galaxies are moving away from Earth.
In addition, many predictions based on the idea have led to additional observations that support it. Which best describes this idea of the origin of the universe?
Physics
2 answers:
valkas [14]3 years ago
7 0

Answer:

theory

Explanation:

took the quiz

jenyasd209 [6]3 years ago
4 0
The United States of green
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Which force causes acceleration(gravity)(friction)(velocity )(energy)
icang [17]

Velocity causes acceleration

Please vote brainliest!

8 0
4 years ago
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What is measurement​
larisa86 [58]

Answer:

the size, length, or amount of something, as established by measuring.

Explanation:

3 0
3 years ago
Consider the circuit shown in the figure to find the power delivered to 6 Ohm resistance (in W). Given that Vs= 30
vekshin1

66.7 Watts

Explanation:

Let R_{1}=1.0 ohms, R_{2}=3.0ohms and R_{3}=6.0\:ohms. Since R_{2} and R_{3} are in parallel, their combined resistance R_{23} is given by

\dfrac{1}{R_{23}}=\dfrac{1}{R_{2}}+\dfrac{1}{R_{3}}

or

R_{23}=\dfrac{R_{2}R_{3}}{R_{2}+ R_{3}}=2.0\:ohms

The total current flowing through the circuit <em>I</em> is given

I=\dfrac{V_{s}}{R_{Total}}

where

R_{Total}=R_{1}+R_{23}= 3.0\:ohms

Therefore, the total current through the circuit is

I=\dfrac{30\:V}{3.0\:ohms}=10\:A

In order to find the voltage drop across the 6-ohm resistor, we first need to find the voltage drop across the 1-ohm resistor V_{1}:

V_{1}=(10\:A)(1.0\:ohms)=10\:V

This means that voltage drop across the 6-ohm resistor V_{3} is 20 V. The power dissipated <em>P</em> by the 6-ohm resitor is given by

P=I^{2}R_{3}= \dfrac{V^{2}}{R_{3}}=\dfrac{(20\:V)^{2}}{6\:ohms}= 66.7 W

4 0
3 years ago
A child pushes a toy truck 2.5 m across a floor with a constant force of 22 N. How much work does the child do on the toy truck?
julsineya [31]

Answer:

55j

Explanation:

work= force × distance

3 0
3 years ago
Can anyone define thermostat and list electrical appliances that have a thermostat?
Tresset [83]
A thermostat is a switch that operates itself when the temperature
goes above or below a temperature that the user can set.

-- Before you go to bed, you set the thermostat for 65° .
If the temperature in the house goes below 65° during the night,
the thermostat turns on the furnace, and keeps it running until
the house warms up to 65°.  Then it shuts the furnace off.

-- After breakfast, you set the thermostat for 75°.
If the temperature in the house goes above 75°, during the day, 
the thermostat turns on the air conditioner, and keeps it running until
the house cools down to 75°.  Then it shuts the air conditioner off.  

-- On Sunday morning, you put the slow cooker on the kitchen counter,
and you throw in a big roast, a sliced onion, some baby carrots, some
sliced potatoes, some vegetable stock, salt, pepper, garlic, chili powder,
and tomato paste.  Then you put the cover on, turn the power on, and
set the slow cooker to "LOW".  The heater in the slow cooker turns on.
  Whenever the temperature in the crock gets higher than 160°, the
thermostat in the slow cooker turns off the heater, and keeps it off
until the crock cools down to 160°.  Then the thermostat turns the
heater on again.
  By dinner time, you have a hot, juicy, scrumptious pot roast, ready
to eat.  It's not too hot, not too cold, not too tough, not dried out, and
it melts in your mouth.
You're still thinking about it when you go to bed, and your mom gives you
a slice to take to school for your lunch on Monday.
4 0
3 years ago
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