Answer:
80-foot pounds
Step-by-step explanation:
As per the given data, the work needed to move the 40 pound box a distance of 2 feet is 79.86 foot-pounds.
What is work done?In physics, work is defined as the product of force and displacement, where force is the applied force and displacement is the distance moved by the object in the direction of the applied force.
To calculate the work needed to move a 40 pound box a distance of 2 feet, we need to use the formula:
Work = Force x Distance x Cos(theta)
where Force is the amount of force applied to move the box, Distance is the distance moved, and Cos(theta) is the cosine of the angle between the force vector and the direction of motion.
Assuming that the force is applied in the same direction as the motion, the angle between the force vector and the direction of motion is 0, and thus Cos(0) = 1. Therefore, the formula simplifies to:
Work = Force x Distance
We are given that the box has a weight of 40 pounds. Since weight is a type of force, we can use the formula:
Force = Mass x Acceleration due to gravity
where Mass is the mass of the box and Acceleration due to gravity is the gravitational acceleration constant, which is approximately 32.2 feet per second squared.
Converting the weight of the box from pounds to slugs (the unit of mass in the English system of units) gives:
Mass = Weight / Acceleration due to gravity = 40 pounds / 32.2 feet per second squared = 1.24 slugs
Therefore, the force required to move the box is:
Force = Mass x Acceleration due to gravity = 1.24 slugs x 32.2 feet per second squared = 39.93 pounds-force
Finally, we can calculate the work needed to move the box a distance of 2 feet as:
Work = Force x Distance = 39.93 pounds-force x 2 feet = 79.86 foot-pounds
Therefore, the work needed to move the 40 pound box a distance of 2 feet is 79.86 foot-pounds.
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find the angle of elevation of a kite on a 50m
string flying 40m vertically above the ground.
The angle of elevation of a kite is 53.13°
What is angle of elevation?"It is the angle formed by the line of sight and the horizontal plane for an object above the horizontal surface."
What is sine angle?"For a right triangle, the sine of acute angle [tex]\theta[/tex] is,
[tex]sin(\theta)=\frac{opposite ~side}{hypotenuse}[/tex]"
For given question,
Consider the following diagram for given question.
The length of the string (AC) = 50m
The kite is flying 40m vertically above the ground.
⇒AB = 40m
We need to find the angle of elevation [tex]\theta[/tex]
Consider the sine of angle [tex]\theta[/tex]
[tex]\Rightarrow sin(\theta)=\frac{AB}{AC} \\\\\Rightarrow sin(\theta)=\frac{40}{50}\\\\\Rightarrow sin(\theta)=0.8\\\\\Rightarrow \theta=sin^{-1}(0.8)\\\\\Rightarrow \theta=53.13^{\circ}[/tex]
Therefore, the angle of elevation of a kite is 53.13°
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Please help I’m on vacation and I didn’t go to school yesterday
Answer:
28 [tex]cm^{2}[/tex]
Step-by-step explanation:
The formula of area for triangles: [tex]\frac{1}{2}bh[/tex]
[tex]\frac{1}{2}[/tex] * 7 = 3.5 (3.5 *2) = 7
The formula for area of a rectangle: bh
7*3 = 21
Add the areas together 21+7 = 28 squared cm
Answer:
28cm²
Formula of area of triangle:
1/2 x base x height
Formula of area of rectangle:
length x width
thus,
area of the whole thing:
(1/2 x 7cm x 2cm)+(3cm x 7cm)
=7cm²+21cm²
=28cm²
Please help with this, its do right know
Answer:
A
Step-by-step explanation:
y = 3x + 10
Ur welcome
find the highest common factor of 12,20 and 28
no links
Answer:
the highest or greatest common factor 12,20,and 28 is 4
Answer:
12, 20, 28.
Step-by-step explanation:
here is the answer
no links
no photos
just a simple answer
have a great day/night
:)
Write a proportion
Four fruit smoothies use 2 1/2 cups bananas. How many cups of bananas are needed to make six fruit smoothies? Will give Brainest if explained
Step-by-step explanation:
4 smoothies = 2 1/2 banana
you need to make 2 more smoothies, So half of what you did already.
(2.5)/2= 1.25 then add them (2.5)+(1.25)
6 smoothies = 3.75 or 3 3/4, same thing.
Help pls giving branliest
Answer:
What types of nouns should be used in effective process writing?
Step-by-step explanation:
write a letter to your friend telling her how you are coping in your new senior school
Answer:
?
Step-by-step explanation:
How many pairs of glasses can we make with the foil beads and how many foil beads will be left over ?
Answer:
I hate to break it, but you ain't giving any information or numbers
Solve for the missing side. Round to the nearest tenth.
10
50°
х
Answer:
15.6
Step-by-step explanation:
1
There are 31 students in a class.
14 of the students are female.
Find the percentage of the class that are female.
Give your answer to the nearest percent.
Effect
aths
Answer:
45.16%
Step-by-step explanation:
31 students is 100%
so, 14x100/31=45.16
el acensor de 8 es 7'?
Answer:
La planta de la que ha salido el ascensor es: -1(planta del sótano)
Datos:
Subió 8 pisos
Piso final= 7
Explicación:
Para resolver el enunciado, se debe tener en cuenta que:
Piso final - Piso inicial= 8
Reemplazando y despejando:
7-Piso inicial= 8
Piso inicial= 7-8
Piso inicial= -1
Por lo tanto, ha salido de la planta del sótano
Verificando:
Piso inicial +8= piso final
-1+8= Piso final
7= piso final
Profundiza en matemáticas en brainly.lat/tarea/10834640
Step-by-step explanation:
Answer:
¡Eso es extraño! Espero nunca llegar a ver que me perdería. ¿Sería como si el octavo piso fuera en realidad siete?
Step-by-step explanation:
The area of a triangle is 108 square meters. If the height is 12 meters, what is the length of the base?
Answer:
area of triangle = 1/2 b×h
Step-by-step explanation:
108=1/2×b×12
108×2=12b
216/12=b
18=b
Final Answer for 6.39 ÷ 0.09?
Answer:
71 is the answer. Good luck
Answer:
71
Step-by-step explanation:
Helppppppppppppp meeeee
a store owner needs a rug with an area of at least 420 square feet select all that the store owner could use A 40 feet x 20 feet B 60 feet x 7 feet C 70 feet x 6 feet D 4 feet x 20 E 20 feet x 4 feet f 40 feet x 7 feet
Answer:
que
Step-by-step explanation:
no sé
find the length of the third side. if necessary, round to the nearest tenth. 12 5
Answer:
The Answe for the third side is 60
HELP PLEASEEE!!! ILL GIVE BRAINLIEST
Answer:
A:8yd
B:2ft
Step-by-step explanation:
A.....All sides of a square are equal and a square has four side so take 32yd/4 and get 8
B.....square root of 4
what is the equation of the line in slope-intercept form?
pls help i cant get this wrong
Answer:
y=mx+b
Step-by-step explanation:
PLEASE HELP, I don’t know how to do this...like at all
Answer:
arc ? = 255°
Step-by-step explanation:
arc DB = 180° - 75° = 105°
arc ? = 360° - 105° = 255°
HELP ON HOMEWORK PLS
Answer:
∠LPN = 57°
Step-by-step explanation:
arc LMN = 360° - 102° - 144° = 114°
∠LPN = 114°/2 = 57°
The sum of two numbers is 66. The smaller number is 18 less than the larger number. What are the numbers?
Please help I’ll mark you as brainliest if correct
Answer:
190.5 Centimeters.
Step-by-step explanation:
Brainliest pls?
how can you tell two objects are similar when all you did is make the the object smaller by a scaled factor?
if good answer... will give brainly and also 5 stars and everything
Answer:
You can tell if they are similar if all the angles correspond and the sides are all scaled down by the same factor. For instance, a triangle with sides of 30, 40, and 50 scaled down by a factor of 2 would have sides of 15, 20, and 25.
Step-by-step explanation:
I hope this helps! Have a great rest of your day!
The length of every chord in a circle is always greater than the length of a radius.
True or False?
Answer:
the answer would be false
Solve the triangle. Round decimal answers to the nearest tenth.
A net of a rectangular prism has 3 pairs of equal sides. The front face has an area of 30 feet squared.
Which statements about the area of the faces of the rectangular prism are true? Select all that apply.
Two of the faces have an area of 30 ft2.
There is only one face with an area of 48 ft2.
Two of the faces have an area of 40 ft2.
The front face has an area of 30 ft2.
The top face has an area of 40 ft2.
Answer:
A,C,D
Step-by-step explanation:
I took it on Edge
Sin 17° cos 13° + cos 17° sin 13°
Answer:
.5
Step-by-step explanation:
Sin(x)cos(y) + cos(x)sin(y) = sin(x+y)
sin(17+13) = 1/2
The graph represents distance traveled varying directly with time.
What would be the distance traveled after 12 hours?
a. 40 miles
b. 540 miles
c. 480 miles
d. 600 miles
Answer:
c. 480 miles.
Step-by-step explanation:
From the graph:
after 5 hours distance travelled is 200 miles.
So by proportion distance in 12 hours = 200 * 12/ 5
= 2400/5
= 480 miles.
In a given equation, C varies inversely with D. If C is 50 when D = 11.5 , find C when D = 20
Answer:
Sry I don't know yrrrrrrrrrrrr
Last year Jacob’s total
Answer:
the answer is $ 83,634
your welcome