Answer:
D) Joe need to walk 481 m in a direction 40.9° north of east
Explanation:
Given:
1. Walk 300 m north
2. Walk 400 m northwest
3. Walk 700 m east-southeast and the treasure is buried there
Taking north as positive y axis and east as positive x axis.
Resolving their positions into x and y vector components.
1. d1 = 300j
2. d2 = -400cos45i + 400sin45j
3 d3 = 700cos22.5i - 700sin22.5j
Resultant position.
d = d1+d2+d3
d = (-400cos45 + 700cos22.5)i + (300+400sin45-700sin22.5)j
d = (363.873)i + (314.964)j
D = √( (363.873)^2 + (314.964)^2)
D =481.25m ~= 481m
Angle = taninverse (314.964/363.873)
Angle = 40.9°
Since the x and y components are both positive, it implies that their position is north of east
Therefore, Joe need to walk 481 m in a direction 40.9° north of east
Answer:
The international date line is measured approximately from <u><em>180 degrees longitude</em></u>.
Explanation:
Meridians and parallels are the imaginary lines used to determine degrees of latitude and geographic longitude. They differ in that the meridians are the circumferences that pass through both poles of the globe, while the parallels are the minor circles that are parallel to the equator, and which serve as the basis for determining latitude.
An antimeridian is a meridian exactly opposite to any meridian that is taken from reference, and therefore, the resulting meridian adds 180 º to that taken from reference.
The Greenwich meridian is the one from which the degrees of geographical longitude of each place on the planet are counted over the Equator. Its name is due to the fact that the imaginary line of the 0 ° meridian that passes through the two poles of the Earth crosses the English town of Greenwich.
When taking Greenwich, 0º, as its reference meridian, its antimeridian is the one located on the opposite side to 180º. This meridian is the international date change line.
So the international date change line is an imaginary surface land line drawn over the Pacific Ocean and coincident with the 180 ° meridian.
Then, <u><em>the international date line is measured approximately from 180 degrees longitude.</em></u>
2. Wounded skin heals by forming a scab.
Explanation:
One of the choices that shows an example of how a living thing maintains its structure is that of a wounded skin healing by forming a scab.
- When a wound heats structure of an organism is maintained.
- The part lost is replaced.
- This way all the body part will still continue to function properly and well.
- Healing occurs when the body forms new tissues to replace the damaged ones.
- Collagens which are protein fibers are used for this process.
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Answer:
current, voltage
Explanation:
Resistors can both be connected in series and parallel configuration. when a resistor is connected serially, the same amount of current flows through each resistor element but the voltage across each resistor is determined by the magnitude of the resistance of each resistor. However, in a parallel connection, the same voltage is applied across each resistor but different current.