Ask question

Ask question

All categories

3 years ago

10

What is cosmic microwave background radiation?

1 answer:

chubhunter [2.5K]3 years ago

6 0

Cosmic, or background, radiation is the small amount of high energy radiation which is mostly left over from the big bang or from supernovas. It is mostly single protons, but also alpha particles and even sometimes heavier elements. It can also refer to the low levels of electromagnetic radiation present all over the universe.

You might be interested in

NEED HELP ASP<br> WILL GIVE POINTS OR WHATEVER

solniwko [45]

Answer:

you need to multiply the momentum and the mass

8 0

2 years ago

With mechanical waves, what is moving and what stays in roughly the same place?

Zielflug [23.3K]

The part that moves are called anti-nodes. The stationary pars are nodes

6 0

3 years ago

A 1.5kw vacuum cleaner is used for half an hour. Calculate its energy usage.

juin [17]

Answer:

its energy usage is 0.05

Explanation:

1.5kw/30=0.05

8 0

2 years ago

If a series circuit contains a 12-V battery, a 6-ohm resistor, and a 4-ohm resistor, what is the current in the circuit?

Shalnov [3]

In a series circuit the total current is the same throughout resistors and so:

$I_{total}=I_1=I_2$

The voltage is distributed throughout the resistors and so:

$V_{total}=V_1+V_2$

and the total resistance can be calculated by adding up the resistors resistance:

$R_{total}=R_1+R_2$

First thing is to calculate the total resistance and so:

$R_{total}=6\Omega + 4\Omega = 10\Omega$

And by Omh's law V=IR we have:

$V_{total}=I_{total}R_{total}\\\\I_{total}=\frac{V_{total}}{R_{total}}= \frac{12V}{10\Omega} =1.2A$

And so the total current of the circuit is 1.2 amps i.e. 1.2 A.

6 0

3 years ago

Read 2 more answers

If the forces acting on an object are balanced, the object may change speed, change direction, or do both. Please select the bes

Leviafan [203]

False is ur answer sorry if i am too late

8 0

3 years ago

Read 2 more answers