1 year ago

T or F? An electric field has strength, but no direction.????

Physics

1 answer:

Aleks04 [339]1 year ago

5 0

Answer:

FALSE

Explanation:

an electric field has both magnitude and direction. it also has strength

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Balance the equation-<br> Al+Mn02 ———-> Mn + Al2O3

ivanzaharov [21]

Answer:

4Al + 3Mno2 --> 2Al2o3 + 3Mn

Explanation:

Al = 1 x 4 = 4

Mn = 1 x 3 = 3

O = 2 x 3 = 6

----------

Al = 2 x 2 = 4

Mn = 1 x 3 = 3

O = 2 x 3 = 6

7 0

2 years ago

A car has a speed of 10 m/s and a mass of 1500 kg. what is the momentum of the car

Mrrafil [7]

Answer:

p = 15 newts

Explanation:

p is momentum

also there's a calculator to answer these questions.

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2 years ago

The smallest shift you can reliably measure on the screen is about 0.2 grid units. This shift corresponds to the precision of po

creativ13 [48]

Answer:

The distance is $d = 1.5 *10^{15} \ km$

Explanation:

From the question we are told that

The smallest shift is $d = 0.2 \ grid \ units$

Generally a grid unit is $\frac{1}{10}$ of an arcsec

This implies that 0.2 grid unit is $k = \frac{0.2}{10} = 0.02 \ arc sec$

The maximum distance at which a star can be located and still have a measurable parallax is mathematically represented as

$d = \frac{1}{k}$

substituting values

$d = \frac{1}{0.02}$

$d = 50 \ parsec$

Note $1 \ parsec \ \to 3.26 \ light \ year \ \to 3.086*10^{13} \ km$

So $d = 50 * 3.08 *10^{13}$

$d = 1.5 *10^{15} \ km$

3 0

3 years ago

Why is it important to know the location of active and inactive faults in our country?

Andrew [12]

Answer:

I hope this helps.

Explanation:

It's important to know the location of an active fault in order to determine the magnitude of the expected earthquake. There is a chance than an inactive fault can become active again. It's important that we take the locations into account in order to be prepared and ready for if it occurs.

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2 years ago

Answer fast please !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

iogann1982 [59]

I believe it's the the third one. :)
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8 0

2 years ago

Read 2 more answers