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DerKrebs [107]
3 years ago
6

Joan wants to take a 30.0N object up to the 3rd floor of her office building,which is 10m above the ground floor.It is too big t

o fit through the doors,however,so she uses a crane to get it up the 3rd floor window.How much power will the crane need to exert in order to do this in 5.00s?
Physics
1 answer:
34kurt3 years ago
5 0
P=W/t
P=F×s/t
P=30×10/5= 60 W
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______ involves organizing and breaking down information into easier groups to expand capacity. Rehearsal is the verbal repetiti
adell [148]

Hi!


The answers would be <u>chunking</u> & <u>short-term</u>


1. <u>Chunking </u>involves organizing and breaking down information into easier groups to expand capacity.

<h3>Explanation:</h3>

Chunking is a mental process that is observed to increase short-term memory by taking the information and categorizing it into small groups. For instance, a longer number taken as a single unit is harder to recall then when it is divided into smaller units. 235469350 is harder to instantly recall as compared to when it is chunked into 3 groups: 235 469 350.

This allows more information to be stored in, thereby increasing the capacity of the mind to store information.


2. Rehearsal is the verbal repetition of information. These techniques are especially important for the improvement of <u>short-term</u> memory.

<h3>Explanation: </h3>

Short-term memory is lost after a couple of seconds or minutes, for instance even if you chunk the information, you might not recall it after 30 seconds. Rehearsing or repetition of information, either loudly or mentally, extends the time a particular information is retained.

So you depending on the number of times you repeat the number 235 469 350, the more your short term memory improves .


Hope this helps!


6 0
3 years ago
Lithium is a metal with an oxidation number of one and oxygen is a nonmetal with an oxidation number of to which chemical formul
Mars2501 [29]
Li2O
Lithium is a metal with an oxidation number of 1+ and oxygen is a nonmetal with an oxidation number of 2-. Which chemical formula represents the compound formed by these two elements? Li2O is the correct answer because lithium has one valence electron and oxygen has six.
Hope this helped.
5 0
3 years ago
PLEASE HELP!! THIS IS DUE RN!!
Oliga [24]

Answer:

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Explanation:

4 0
3 years ago
What is the direction of the net force that acts on an object undergoing uniform circular motion?
valentinak56 [21]

Answer B. the direction of force is the same

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3 years ago
malcom is doing a wheely on his motorcycle and moving at 20 m/s with a momentum of 6000 kg m/s when he lays her down. The mass o
rodikova [14]

Answer:

110 kg

Explanation:

The momentum of the Malcom+motorcycle system is given by:

p=(m+M)v

where

(m+M) is the total mass of the system, with

m = mass of Malcom

M = 190 kg (mass of the motorcycle)

v = 20 m/s velocity

Since we know the momentum:

p = 6000 kg m/s

We can re-arrange the equation to find the mass of Malcom:

m=\frac{p}{v}-M=\frac{6000 kg m/s}{20 m/s}-190 kg=110 kg

3 0
3 years ago
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