![cheesecake1919](/avatars/12512.jpg)
cheesecake1919
26.07.2019 •
Physics
Which of the following was not a part of dalton's atomic theory?
Solved
Show answers
More tips
- A Animals and plants What Do Terriers Eat?...
- F Food and Cooking Discover the Benefits and Properties of Dates...
- C Computers and Internet Dynamically Assigned IP Address: What Is It and How Does It Work?...
- S Style and Beauty How to Get Rid of Acne: Scientifically Proven Methods...
- H Health and Medicine Simple Ways to Lower Cholesterol in the Blood: Tips and Tricks...
- O Other How to Choose the Best Answer to Your Question on The Grand Question ?...
- L Leisure and Entertainment History of International Women s Day: When Did the Celebration of March 8th Begin?...
- S Style and Beauty Intimate Haircut: The Reasons, Popularity, and Risks...
- A Art and Culture When Will Eurovision 2011 Take Place?...
- S Style and Beauty How to Choose the Perfect Hair Straightener?...
Answers on questions: Physics
- P Physics Directions: On the line before each statement, write T if the statement is true or F if the statement is false. 8. Most bacteria are harmful. 9. Foods, such as yogurt...
- P Physics Calcular la distancia de desplazamiento de un cuerpo de masa 30kg, realizando una fuerza de 294N en un ángulo de 30º respecto al suelo y logrando un trabajo de 4583...
- P Physics Which equation best describes the law of conservation of momentum? O pi= Pt Op; P Op; Op; + Pr= 0...
- P Physics The chart shows daniela’s run through her race. what is her velocity? a. 1.5 m/s b. 2 m/s c. 2.5 m/s d. 5 m/s...
- P Physics An) is an organism that lives on another organism and causes harm to that organism. what word can be used to fill in the blank? a. remora b. parasite c. lichen d....
- S Social Studies On Monday, Johnny s mother gave him cookies and milk after he had played quietly for 10 minutes. On Tuesday, she required 20 minutes of quiet play before treat time,...
- B Biology Which refers to the process of going against the natural flow of heat and moving thermal energy from a low temperature to a high temperature? radiation refrigeration...
- E Engineering Señale cuales son los conceptos que comprenden los costos relaciondos a la adquision cual es su tratamiento contable a la fecha de combinacion de negocios....
- B Business One identical unit is purchased on each of the following three dates and at the respective costs: June 1 at $10 June 2 at $15 July 4 at $20 The company sells two units...
- M Mathematics News of your analytical prowess has spread throughout the area. Naturally, when the coaching staff of your teen’s high school lacrosse team has a statistical question,...
Ответ:
Ответ:
2.99 m/s north of west
Explanation:
The first thing is to find the "north south" component of the displacement since the position of the coast guard ship doesn't change in that axis.
to find the y position on the first moment we can use the sine formula:
sin (a) = oposite side / hipotenuse
replacing and solving for y1 it would be
sin(31°) = y₁ / 2315m
y₁ = sin(31°)*2315m = 1192 m
that's how south of the coast guard ship the object is on the first moment
doing the same for the second moment we can get the y position for the second measurement
y₂ = sin(57.5°) * 1130 = 953 m
this means that in that time the object moved north 1192m - 953m = 176.96 m
_________
now to get the x component we do the same as before using cos and we'll get how far east the object is relative to the ship on the first moment
cos (31°) = x₁/ 2315m
x₁ = cos(31°) * 2315m = 1984 m (east)
now we do the same for x component for the ship on the second moment
cos(57.5°) * 1130 = 607m (west)
now to get these numbers on the same frame of reference to calculate.
the coast guard ship moved 4.25 m/s*60s*6 = 1530 m east.
This means that to get the x position for the object on the second moment *relative to where the coast guard ship was on the first moment*
we need to do
1530m - 607 m = 923m <--- THIS is our x₂
_______
so when we compare the x1 to x2 we see that the object moved 1984 m - 923m = 1061 m (west)
now to recap the object then moved (from its own original position)
176.96 meters north and 1061 meters west
now we have the two components of the movment
to get it's angle we use the inverse tangent (arctan,
(x))
arctan(176.9/1061) = 9.46° north of west
for the speed we need the actual distance traveled, we can use pythagoras or any other trig function, in this case i'll use sin
sin(9.46°) = 176.9 / d
d = 176.9 / sin (9.86°) = 1076.3m
now dividing this distance with the seconds elapsed (60*6 = 360s)
we have that the final speed was
1076.3m
/360s= 2.9897 m/s north of west
(obviously depending on where you did the rounding it would get closer to 3)