1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
erica [24]
2 years ago
8

Two workers pull horizontally on a heavy box, but one pulls twice as hard as the other. The larger pull is directed at 25.0 ∘ we

st of north, and the resultant of these two pulls is 590.0 N directly northward.Use vector components to find the magnitude of each of these pulls. Assume that the smaller pull has a component directed to the north and Use vector components to find the direction of the smaller pull. Assume that the smaller pull has a component directed to the north.
Physics
2 answers:
DiKsa [7]2 years ago
5 0
  <span>The smaller pull is "F" and the larger pull is "2F". 
The east-west components of F and 2F cancel. 
The north components add to 460 N. 
2Fcos25 + FcosΘ = 460 
2Fsin25 - FsinΘ = 0 
where Θ is measured cw from +y axis (east of north) 
In the second equation, F cancels, leaving 
2sin25 = sinΘ = 0.845 → Θ = 58º East of North 
Using the first equation, then, 
2Fcos25 + Fcos58 = 1.813F + 0.534F = 2.347F = 460 
F = 196 N 
2F = 392 N</span>
pickupchik [31]2 years ago
3 0

Answer:&=32.3°

Small pull=251.38N

Large pull=502.76N

Small pull is 32.3° north east

&=-32.3°

Small pull=416.58N

Large pull=923.17N

Small pull is 32.3°south east

Explanation: Let the small pull have a magnitude of F

Let the larger pull have a magnitude of 2F

On x-component:

Fcos&-2Fsin25=0

F(cos&-2sin25=0

F=0, we have,

Cos&-2sin25=0

&=Cos-1(2sin25)

&=Cos-1 0.8452

&=32.3° or-32.3°

X-component using &=32.3°

Fy+2Fy=Fsin32.3+2Fcos25=590N

F=590/(sin32.3+2cos25)

F=590/(0.5344+1.8126)

F=590/2.3470=251.38N

2F=2×251.38×2=502.76N

For&=-32.3°

Fsin(32.3)+2cos25=590N

F=590/(sin(-32.3) +2cos25)

F=590/(-0.5345+1.8126)

F=590/1.2782 = 461.59N

2F=923.17N

You might be interested in
The Ptolemaic model of the universe:
harkovskaia [24]

Answer:

The Ptolemaic model of the universe <u><em>A) explained and predicted the motions of the planets with deferents and epicycles.</em></u>

Explanation:

Ptolemy of Alexandria built an explanation of the observed movements of the planets that remained in force for thirteen centuries. Ptolemy proposed a model of the Universe with the Earth in the center. In the model, the Earth remains stationary while the planets, the Moon and the Sun describe complicated orbits around it. In other words, Ptolemy devised a system in which he used epicycles, deferential and eccentric, and it was necessary to introduce an equating point to reproduce planetary movements. He proposed that:

a) Each planet revolves with constant velocity around a circle called an epicycle.

b) The center of the epicycle is located and moves with constant velocity around another circle called deferential.

c) The center of the deferent is located at a moving point, which travels with constant speed describing another circumference called eccentric.

d) The center of the eccentric coincides with the center of the Universe.

e) Since the Earth is not located in the center of the Universe, but very close to it, it was necessary to introduce an equating point, which is not on Earth, and from which you can see the planet move with constant speed.

However, Ptolemy put forward this geometric theory to explain mathematically the movements and failed to adjust any system of cycles, epicycles and eccentrics that accurately represented the observed movements of the planets.

Finally, <u><em>The Ptolemaic model of the universe A) explained and predicted the motions of the planets with deferents and epicycles.</em></u>

8 0
2 years ago
Read 2 more answers
John goes grocery shopping with his mother. His job is to push the cart. The cart is
lora16 [44]

Answer:

Beacause he has more grocceries and food heavy

Explanation:

7 0
2 years ago
Help can’t find the answer no where
katen-ka-za [31]

i'm stuck on that question also

5 0
3 years ago
A car was at a 30km marker and began to drive. The car passed a 90km marker and the time had changed 30
dolphi86 [110]

Answer:

i think it's 2km pm

Explanation:

2km x 30 60.. start was 30, and now your at 90.. we had to determine how much time it took.. so 2 is the average.. or atleast per minute and sorry it i still didnt answer ur question lol im just trynna help

7 0
2 years ago
Biologists use optical tweezers to manipulate micron-sized objects using a beam of light. In this technique, a laser beam is foc
vekshin1

Answer:

Explanation:

Part A) Using

light intensity I= P/A

A= Area= π (Radius)^2= π((0.67*10^-6m)/(2))^2= 1.12*10^-13 m^2

Radius= Diameter/2

P= power= 10*10^-3=0.01 W

light intensity I= 0.01/(1.12*10^-13)= 9*10^10 W/m^2

Part B)  Using

I=c*ε*E^2/2

rearrange to solve for E= \sqrt{((I*2)/(c*ε))

c is the speed of light which is 3*10^8 m/s^2

ε=permittivity of free space or dielectric constant= 8.85* 10^-12 F⋅m−1

I= the already solved light intensity= 8.85*10^10 W/m^2

amplitude of the electric field E= \sqrt{(9*10^10 W/m^2)*(2) / (3*10^8 m/s^2)*(8.85* 10^-12 F⋅m−1)

---> E= \sqrt{(1.8*10^11) / (2.66*10^-3) = \sqrt{(6.8*10^13) = 8.25*10^6 V/m    

 

8 0
3 years ago
Other questions:
  • A girl pulls a sled with a force of 15 N over a distance of 3 m. What is the kinetic energy of the sled after she pulls it? Assu
    15·2 answers
  • How much do you know about genetic engineering?
    9·1 answer
  • Please help solve this inelastic collision question please use GUESS to solve it if you can’t it’s fine
    14·1 answer
  • What part of that antonym determines if it will combine or break apart from another substance
    6·1 answer
  • When you whirl a small rubber stopper on a cord in a vertical circle, you find a critical speed at the top for which the tension
    12·1 answer
  • A stone falls freely from rest for 8.0s what is it final velocity
    15·1 answer
  • Give two example of Pseudoscience?
    8·1 answer
  • The occupants of a vehicle not wearing a seat belt, traveling at a speed of 50 mph and colliding head-on with another vehicle, w
    11·1 answer
  • What is forward and downward speed
    11·1 answer
  • Please help thanks :)
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!