3 years ago

What is background radiation?

Physics

1 answer:

IceJOKER [234]3 years ago

7 0

The uniform microwave radiation remaining from the Big Bang

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A person walks first at a constant speed of 5.50 m/s along a straight line from point A to point B and then back along the line

Sav [38]

Answer:

4.25 m/s

Explanation:

They walked the first distance at 5.50 m/s, then the same distance at 3 m/s.

Since the distances are equal, the average speed is simply the average of 5.50 and 3.

(5.50 + 3) / 2 = 4.25

Her average speed over the entire trip is 4.25 m/s.

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3 years ago

During lightning strikes from a cloud to the ground, currents as high as 2.50×10^4 Amps can occur and last for about 40.0 micros

dangina [55]

Answer:

1 C

Explanation:

The intensity of electric current is defined as

$I=\frac{q}{t}$

where

I is the current

q is the amount of charge transferred

t is the time interval during which the charge is transferred

For the lightning in this problem, we have

$I=2.50\cdot 10^4 A$ is the current

$t=40.0 \mu s = 40.0\cdot 10^{-6} s$ is the time interval

Solving the formula for q, we find the amount of charge transferred:

$q=I t = (2.50\cdot 10^4 A)(40.0\cdot 10^{-6}s)=1 C$

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3 years ago

Which body system is responsible for bringing oxygen into the body?

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The respiratory system

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3 years ago

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A farmer mated two ducks. They produced three offspring. Two of the offspring were then selected to mate with each other because

cestrela7 [59]

it's called inbreeding

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3 years ago

The pull of what is weaker when 2 objects are farther apart

9966 [12]

The gravitational pull is weaker.

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3 years ago