The moons surface is covered in pieces of asteroids that have impacted the moon. This means that most of the moon rocks are just chunks of asteroids. These asteroids (called Chondrites) were around at the beginning of the solar system, so by measuring their age, we can get an estimate for the age of our solar system.
In fact, we can tell from these rocks that because of the concentration of certain radioactive isotoes in these chondrites, our solar system was triggered to form from a near by supernova event :)
The question is going along fine, and then suddenly "groups of two" get thrown in. What that means is not clear at all.
Here's a solution assuming that 8 heater wires are all in parallel:
-- The resistance of each wire is 4 ohms.
-- If eight resistors, each 4 ohms, are in parallel, the <em>total resistance is 0.5 ohm.</em>
-- Current = (voltage)/(resistance)
Current = (12 volts) / (0.5 ohm)
<em>Current = 24 Amperes.</em>
Power dissipated by the heater = (voltage) x (current)
Power = (12 volts) x (24 Amps) = 288 watts, a nice toasty heating pad.
Position is a relative measurement. If you want to know how far away in object is you need to know where you're measuring from. That is, distance always requires two points. Velocity is the time rate of change of position. If position is a relative measurement then so must be its rate of change. This means the statement I am moving is meaningless. It is not a meaningful thing to say that and object is moving without saying what it is moving with respect to. As an example imagine getting up and walking around on an airplane while it is in flight. you do not have to run 600 mph to get to the front of the plane you can simply walk around just like you're on the ground. That is because in your frame of reference the plane is not moving at all. It is the earth below that is moving. But the people on the ground think the plane is moving in the earth is at rest. Both people are correct because each observer has their own frame of reference. The only universally true statement is that there is relative motion between the plane and the ground. Every observer can agree on the fact but they will disagree on the speed of the earth and the plane. That is because motion is a relative measurement. In a similar way if someone asked how far away is Paris? Your answer would be different than mine because we live in two different locations. Neither of us are wrong but that is because Paris is not a definite distance away from every point in the universe. That is a commonsense thing for everyone, but for some reason it's easier to get mixed up about velocity. We get used to thinking that the earth is somehow stationary.
Displacement can be defined as the overall change in the position of the object. The displacement of the car in 5 hrs is 0 km.
Displacement:
It is a vector quantity that is defined as the overall change in the position of the object.
The formula for displacement is:
Where,
- total displacement
- final position
- initial position
In the given graph:
- Car displaces 15 km in 2 hrs
- Car displaces 20 km in 4 hrs.
- The car moves back to the initial position in 5 hrs.
Therefore, the displacement of the car in 5 hrs is 0 km.
Learn more about Displacement:
brainly.com/question/10919017
Gamma: 4
Infrared: 1
X-Ray: 3
Visible Light: 2
Infrared has the longest wavelength between the four options, meaning that it has the lowest frequency. Since the longer the frequency, the lower the frequency. While the shorter the wavelength, the higher the frequency.
Next would be visible light since it has the second longest wavelength out of the given options. Then it would be X-Ray. And finally Gamma since it has the shortest wavelength.