BIO A food particle from your breakfast takes a circuitous path through your digestive system . Suppose its motion over a period of time can be represented by the four displacement vectors depicted in Figure 3-49 . Let the vectors have magnitudes A = 8.0 cm, B = 16 cm , C = 23 cm, and D = 5.6 cm. (a) What is the total displacement of the food particle? Give its direction relative to the direction of vector A → . (b) If the average speed of the particle is 0.010 mm/s, what is its average velocity over the time interval of the four displacements? Figure 3-49 Problem 75
BIO A food particle from your breakfast takes a circuitous path through your digestive system . Suppose its motion over a period of time can be represented by the four displacement vectors depicted in Figure 3-49 . Let the vectors have magnitudes A = 8.0 cm, B = 16 cm , C = 23 cm, and D = 5.6 cm. (a) What is the total displacement of the food particle? Give its direction relative to the direction of vector A → . (b) If the average speed of the particle is 0.010 mm/s, what is its average velocity over the time interval of the four displacements? Figure 3-49 Problem 75
BIO A food particle from your breakfast takes a circuitous path through your digestive system. Suppose its motion over a period of time can be represented by the four displacement vectors depicted in Figure 3-49. Let the vectors have magnitudes A = 8.0 cm, B = 16 cm , C = 23 cm, and D = 5.6 cm. (a) What is the total displacement of the food particle? Give its direction relative to the direction of vector
A
→
. (b) If the average speed of the particle is 0.010 mm/s, what is its average velocity over the time interval of the four displacements?
Figure 3-49 Problem 75
Definition Definition Organ system that helps in the digestion of food by mechanical and biochemical processes. The digestive system breaks down food into simpler components that enable the body to then absorb or transport nutrients. The human digestive system includes the gastrointestinal tract or alimentary canal and the associate glands. The organs of the gastrointestinal tract include the mouth, pharynx, esophagus, stomach, small intestine, and large intestine. The associated glands include salivary glands, liver, gallbladder, and pancreas.
î
A proton is projected in the positive x direction into a region of uniform electric field E = (-5.50 x 105) i N/C at t = 0. The
proton travels 7.20 cm as it comes to rest.
(a) Determine the acceleration of the proton.
magnitude 5.27e13
direction -X
m/s²
(b) Determine the initial speed of the proton.
8.71e-6
magnitude The electric field is constant, so the force is constant, which means the acceleration will be constant.
m/s
direction +X
(c) Determine the time interval over which the proton comes to rest.
1.65e-7
Review you equations for constant accelerated motion. s
Three charged particles are at the corners of an equilateral triangle as shown in the figure below. (Let q = 2.00 μC, and
L = 0.750 m.)
y
7.00 με
60.0°
L
9
-4.00 μC
x
(a) Calculate the electric field at the position of charge q due to the 7.00-μC and -4.00-μC charges.
112
Once you calculate the magnitude of the field contribution from each charge you need to add these as vectors.
KN/CI + 64
×
Think carefully about the direction of the field due to the 7.00-μC charge. KN/Cĵ
(b) Use your answer to part (a) to determine the force on charge q.
240.0
If you know the electric field at a particular point, how do you find the force that acts on a charge at that point? mN
Î + 194.0
×
If you know the electric field at a particular point, how do you find the force that acts on a charge at that point? mN
In the Donkey Kong Country video games you often get around by shooting yourself out of barrel cannons. Donkey Kong wants to launch out of one barrel and land in a different one that is a distance in x of 9.28 m away. To do so he launches himself at a velocity of 22.6 m/s at an angle of 30.0°. At what height does the 2nd barrel need to be for Donkey Kong to land in it? (measure from the height of barrel 1, aka y0=0)
Applications and Investigations in Earth Science (9th Edition)
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