Between B and C, the object was going at a constant velocity; it is going 60 m/min consistently for that time frame.
Answer:
Therefore, the correct option is c: 0.
Explanation:
We can find the speed of the combined object by conservation of linear momentum:
Where:
"i" is for initial and "f" is for final
m₁: is the mass of the first object = m
m₂: is the mass of the second object = 3m
v₁: is the velocity of the first object
v₂: is the velocity of the second object
Therefore, the correct option is c: 0.
I hope it helps you!
Answer: 0.335 μC
Explanation:
The charge across the wire can be gotten by
Q = IT, where I is the current, and T is the time. Ω
Also, I = V/R, where V is the potential difference across the wire and R is the resistance of the wire.
R is also given as ρL/A, where A is πr²
Now, if we insert each of these formula in each other, we have
I = V/ [ρL/πr²]
I = V*π*r²/ρL
Q = V*π*r²*t / ρL so that
Q = [3*10^-9 * π * 0.002² * 3*10^-3] / [1.69*10^-8 * 0.02]
Q = [ 1.13*10^-16 ] / 3.38*10^-10
Q = 3.35*10^-7C
Q = 0.335 μC
Yes, scientific method can be applied on many everyday activities to get a reasonable solution. Infact normally we are applying this method without having it in our knowledge that we are applying it.
For example: In morning we are going to office and we start the car, but it is not started.You turn the engine again and again but it simply donot works.
Observation (the state of defining a problem):
The car is not started
Hypothesis (A possible solution based on the information we already know):
The car is not started because it might be out of gas or there can be some other technical fault.
Experiment (testing of hypothesis by applying different methods of solving problem):
You get the fuel and put it inside the car but it still donot works and car didnot start. Experiment didnot get solution.
Analyze the results of data and test another hypothesis
You call a technician and he check with the car engine tries and finds out that the engine was out of order and needs repairing.
Draw conclusion:
The engine do not works when it is out of order and it is a cause of a car not being started.
<em>Now the theory and law making part can not be applied on this case but it is a part of scientific method.</em>
Hope it helps!