My parents are mad at me for getting a B+. A B+! WHAT THE HECK? What do I do!!

A 400-kg box is lifted vertically upward with constant velocity by means of two cables pulling at 40. 0° on either side of the v

amm1812

Answer:

2558 N.

Explanation:Each rope takes half, so the vertical component of the force on each rope is half of this, or 1960 N.. But they are pulling at a 40 degree angle, so if t is the tension then t*cos(40) = 1960. This gives t = 2558 N.

7 0

3 years ago

In recent years, the United States has quizlet

Misha Larkins [42]

In recent years, the United States has been known to export more of its services abroad than it has imported due to its experienced workforce and industrialization.

<h3>What is Export?</h3>

These are the goods and services which are sold to another country in exchange of money and its equivalents and is regarded as one of the determinants of the value of the gross domestic product of countries.

High technological advancement which led to the increase in industries etc in the United States has led to an increase in goods production which are sufficient enough to cater for the people. This is the why the excess is usually sold to other countries. The more exports a country has, the more revenue it generates to cater for other departments.

Read more about Export here brainly.com/question/13663581

#SPJ1

6 0

2 years ago

Ronnie wants to lower his utility bills to save money on his monthly expenses. He discovers that if he replaces his water heater

mote1985 [20]

Answer:55.4%
I Hope This Helps

6 0

2 years ago

C=

wariber [46]

<h2>Right answer: I and II only </h2>

If we already have the formula to find how temperature measured in degrees Fahrenheit, relates to a temperature in degres Celsius:

$C=(F-32)\frac{5}{9}$ (1)

We can know the formula to find how temperature measured in degrees Celsius, relates to a temperature in degres Fahrenheit, only by isolating F:

$F=(\frac{9}{5}C)+32$ (2)

Having both formulas, let’s begin:

I) If we want to prove that a temperature increase of 1 degree Fahrenheit is equivalent to a temperature increase of 5/9 degree Celsius:

Beginning with $1\ºF$ :

$C=(1\ºF-32)\frac{5}{9}=-17.22\ºC$

This means: $1\ºF=-17.22\ºC$

Now we are going to increase 1 degree Farenheit. In other words, we are going to use $2\ºF$ :

$C=(2\ºF-32)\frac{5}{9}=-16.66\ºC$

This means: $2\ºF=-16.66\ºC$

Calculating the difference between $-16.66\ºC$ and $-17.22\ºC$ :

$-16.66\ºC-(-17.22\ºC)=0,55\ºC$ >>>>This is equal to 5/9 degree Celsius, hence is correct

II) If we want to prove that a temperature increase of 1 degree Celsius is equivalent to a temperature increase of 1.8 degrees Fahrenheit:

Beginning with $1\ºC$ :

$F=(\frac{9}{5}1\ºC)+32$

$F=33.8\ºF$

This means: $1\ºC=33.8\ºF$

Now we are going to increase 1 degree Celsius. In other words, we are going to use $2\ºC$ :

$F=(\frac{9}{5}2\ºC)+32$

$F=35.67\ºF$

This means: $2\ºC=35.67\ºF$

Calculating the difference between $35.67\ºF$ and $33.8\ºF$ :

$35.67\ºF-33.8\ºF=1.8\ºF$ >>>>This is a proof of the statement, hence is also correct.

<h2 />

III) If we want to prove that a temperature increase of 5/9 degree Fahrenheit is equivalent to a temperature increase of 1 degree Celsius:

Beginning with $1\ºC$ :

$F=(\frac{9}{5}1\ºC)+32$

$F=33.8\ºF$

This means: $1\ºC=33.8\ºF$

Now we are going to add $\frac{5}{9}\ºF$ :

$33.8\ºF+\frac{5}{9}\ºF=34.35\ºF$

And use this value in the Celsius formula:

$C=(34.35\ºF-32)\frac{5}{9}=1.30\ºC$

This means: $1.30\ºC=34.35\ºF$

In other words: An increase in 5/9 degree Fahrenheit is equivalent to a temperature increase of 1.30 degree Celsius, <u>not 1 degree Celsius</u>.

Therefore this statement is incorrect.

4 0

3 years ago

Me over here eating the best lunch ever a Hungary man/ tv dinner and chocolate milk

sesenic [268]

Answer:

i used to eat those all the timeeeeee. and chocy milk is da bestttttt lol

4 0

3 years ago