If his truck pulls forward with a force of 2,750 newtons and the weight of the trailer pulls backward with a force of 2,790 newtons, which of the following statement is true?
a: the truck and trailer will experience a net force of 40 newtons backward.
b: the truck will experience a net force of 2,750 newtons forward.
c: the forces acting on the truck and trailer are balanced.
d: the truck and trailer will experience a net force of 40 newtons forward.
Solved
Show answers
More tips
- S Science and Technology Why is there no gravity on other planets?...
- F Food and Cooking Deflope: What is it and how does it work?...
- B Business and Finance How to Create a Business Plan? Your Ultimate Guide...
- F Food and Cooking Unusually Delicious Shashlik - Follow the Etiquette of Proper Preparation!...
- C Computers and Internet Make Easy Accessible Screenshots on iPad in Just a Few Minutes...
- T Travel and tourism Lost in the Catacombs: What to Do?...
- F Family and Home Protect Your Home or Apartment from Pesky Ants...
- H Health and Medicine How to Treat Styes: Causes, Symptoms, and Home Remedies...
- L Legal consultation What Documents Are Required for a Russian Passport?...
- F Family and Home How to Properly Use a Water Level?...
Answers on questions: Physics
- P Physics Find the x- and y- components of 14N -25°...
- P Physics Use the ideal gas law, PV=nRT to solve. R=0.0821 If I have 15 moles of gas at a temperature of 299K and a volume of 92L, what is the pressure of the gas?...
- P Physics PLEASE HELP What is the formula for kinetic energy??!?...
- P Physics Sally s little brother has been torturing her with his green foam ball. Every time he sees her lately, he throws the ball right at her. Now, Sally flinches just at the sight of...
- P Physics Two tiny conducting spheres are identical and carry charges of - 20.0 µC and +50.0 µC. They are separated by a distance of 2.50 cm. (a) What is the magnitude of the force that...
- P Physics A. Which item - the granite rock, the sand, or the water - has the highest specific heat? Which has the lowest specific heat? (4 points) b. Which item requires the least energy...
- P Physics Which of the following would increase the conductivity of a connecting wire? increase the diameter of the wire, increase the length of the wire, decrease the temperature of the...
- P Physics In which order would the the rocket pass through the layers of the atmosphere...
- B Biology 42. The graph shows the distance an object traveled in 11 seconds. Distance Versus Time 10 9 8 Distance (m) 3 2 1 0 1 2 3 4 5 6 7 8 9 10 Time (s) which answer choice best describes...
- M Mathematics 60 = 15r^((3-1)) Solve for R...
Ответ:
Ответ:
The correct answer to the question is A): The truck and trailer will experience a net force of 40 newtons backward.
EXPLANATION:
As per the question, the force exerted by the truck F = 2750 N forward.
The force exerted by the trailer F' = 2790 N backward.
We are asked to calculate the net force experienced by the truck and trailer.
From above, we see that two forces are anti parallel i.e they are opposite to each other.
Hence, the angle between them
.
Let the magnitude of the resultant force is R.
From parallelogram law of vector addition, the magnitude of the resultant is calculated as -
=![\sqrt{F^2+F'^2+2FF'cos180}](/tpl/images/0415/5023/269e3.png)
=![\sqrt{F^2+F'^2-2FF'}](/tpl/images/0415/5023/401ef.png)
=![\sqrt{(F'-F)^2}](/tpl/images/0415/5023/44f23.png)
= F' - F
= 2790 N - 2750 N
= 40 N. [ans]
The direction of resultant of two anti parallel vectors will be along the direction of bigger vector.
Hence, the net force will be 40 N backward.
Ответ:
20.9 volts
Explanation:
R = 27.7 Ω
I = 753 mA = 0.753 A
V = ?
From Ohms law, V = IR
V = 0.753×27.7
V = 20.8581
V = 20.9 volts