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2 years ago

11

Most persons are of the belief that the old time hard or solid iron cars are much safer in collisions than the new model softer

cars. But how can newer, softer cars be safer in a collision, considering momentum?

1 answer:

insens350 [35]2 years ago

5 0

Softer cars will crumple better in a collision- they absorb more of the impact force and therefore are safer

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Stars are called blackbody radiators because they

scoundrel [369]

The answer is D) absorb most of the light that falls on them

A blackbody is an object that absorbs most (theoretically all) of the light that falls on it. Stars are called black bodies because they demonstrate something close to this property. Why do they appear white and not black? As black body radiators heat up, they slowly turn from black to grey to white, according to the human eye. Since stars are incredibly hot, they appear white to us.

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3 years ago

What is the answer to this question?

solmaris [256]

Answer:

<em><u>NA2SO3</u></em> is the reactant in the reaction

Explanation:

The substances which take part in a chemical reaction are called <em><u>reactants</u></em>

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2 years ago

A hydrogen atom has a diameter of about 10 nm. Express this diameter in meters. Express this diameter in millimeters. Express th

Fynjy0 [20]

So, the first question is: how many meters are 10 nm?

1nm =<span>0.000000001 m.

So 10 nanometers are </span><span>0.00000001 m!

Now, how many milimeter are those?
let's start with meters, 1 meter are 1000 milimeters.
so </span>
0.00000001*1000=0.<span><span>00001</span> m!

now, micrometers .1 micrometer are 1000 nanometers.
so 10 nanometers are 0.01 micrometers! (1 nanometer is 0.001 micrometers)
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3 years ago

A position vector with magnitude 10 m points to the right and up. its x-component is 6.0 m. part a what is the value of its y-co

lidiya [134]

The position vector can be transcribed as:

A<span> = 6 i + y j </span>

i <span>points in the x-direction and j points in the y-direction.</span>

The magnitude of the vector is its dot product with itself:

<span>|A|2 = A·A</span>

<span>102 = (6 i + y j)•(6 i+ y j) Note that i•j = 0, and i•i = j•j = 1 </span>

<span>100 = 36 + y2 </span>

<span>64 = y2</span>

<span>get the square root of 64 = 8</span>

<span>The vertical component of the vector is 8 cm.</span>

3 0

2 years ago

A woman and her dog are out for a morning run to the river, which is located 4.0 KM away. The woman runs at 2.5 M/S in a straigh

VLD [36.1K]

River shore is located at distance

$d = 4 km$

speed of the woman is given as

$v_1 = 2.5 m/s$

now the time taken by the woman to cover the distance is

$t = \frac{d}{v}$

$t = \frac{4000}{2.5} = 1600 s$

for the same time interval the dog will run to and fro with speed 4.5 m/s

so the total distance moved by the dog is given by

$d = v* t$

$d = 4.5 * 1600$

$d = 7200 m$

<em>so the total distance that dog will move is 7200 m or 7.2 km</em>

8 0

3 years ago