All categories

3 years ago

A weight of 100 pounds moved a distance of 12 feet equals 120 240 1200 ft.-lbs. of work.

1 answer:

3 0

Work = Fdcos(alpha)

Where F is force, D is distance, and Alpha is the angle to the parallel plane (in this case the ground)

I’ll assume alpha is 0 since it’s not given

100 • 12 • cos(0) = 1200 ft-lbs

You might be interested in

Please help due tomorrow <br><br> Thanks

natka813 [3]

I believe the answer is the poles of the magnet.

8 0

3 years ago

Pb(NO3)2 + NH4Cl = PbCl2 + NH4NO3<br> how do i balance this??

Elden [556K]

Answer:

We have NH 4 and that's called the ammonium ion it also stays together.

Explanation:

7 0

2 years ago

What is the next step if the data from an investigation do not support the original hypothesis?

IceJOKER [234]

Change one of the variables and try again

5 0

3 years ago

Write the charge and full ground-state electron configuration of the monatomic ion most likely to be formed by each:

Sladkaya [172]

Answer:

Part A:

Charge is $P^{3-}$

Configuration is $1s^2 2s^22p^63s^23p^6$

Part B:

Charge is $Mg^{2+}$

Configuration is $1s^2 2s^22p^6$

Part C:

Charge is $Se^{2-}$

Configuration is $1s^2 2s^22p^63s^23p^64s^23d^{10}4p^6$

Explanation:

Monatomic ions:

These ions consist of only one atom. If they have more than one atom then they are poly atomic ions.

Examples of Mono Atomic ions: $Na^+, Cl^-, Ca^2^+$

Part A:

For P:

Phosphorous (P) has 15 electrons so it require 3 more electrons to stabilize itself.

Charge is $P^{3-}$

Full ground-state electron configuration of the mono atomic ion:

$1s^2 2s^22p^63s^23p^6$

Part B:

For Mg:

Magnesium (Mg) has 12 electrons so it requires 2 electrons to lose to achieve stable configuration.

Charge is $Mg^{2+}$

Full ground-state electron configuration of the mono atomic ion:

$1s^2 2s^22p^6$

Part C:

For Se:

Selenium (Se) has 34 electrons and requires two electrons to be stable.

Charge is $Se^{2-}$

Full ground-state electron configuration of the mono atomic ion:

$1s^2 2s^22p^63s^23p^64s^23d^{10}4p^6$

8 0

3 years ago

plz help me asap (plz don't give me helpless answer plz and ty) and also ill give brainist to the person that work hard

Vesna [10]

Question? I don’t see anything

8 0

2 years ago