1- You should always have a question for your experiment.
2- You need to conduct background research. It helps to write down your sources so you can cite your references.
3- Propose a hypothesis (educated guess on what you believe the outcome of the experiment will be)
4- Design and perform an experiment to test your hypothesis (include independent and dependent variable)
5- Record observations and analyze what the data means.
6- Conclude whether you need to accept or reject your hypothesis, which accepting means your hypothesis was right and rejected is if it was wrong.
Answer:
Explanation:
The sum of torque on the sphere is:
Solving for a:
Now, the sum of forces will be:
Solving for Ff:
Ff=-6.42N The negative sing tells us that it actually points downwards.
Answer:
The final position is -69.8 m
Explanation:
Recall that displacement is defined as:
where represents the final position, and the initial position of the object (in our case 83.2 m). Since we also know the displacement (-153 m), we can solve the equation for the final position:
Answer:A
Explanation:
In R-L circuit current is given by
where i=current at any time t
R=resistance
L=Inductance
at t=0 approaches to 1
therefore
i=0
when t approaches to , approaches to zero
thus
thus we can say that initially circuit act as broken wire with zero current
and it increases exponentially with time and act as ordinary connecting wire
Answer:
Explanation:
<u>Average Speed</u>
The speed of an object is the rate of change of its distance. When an object travels at different speeds over time, the average speed is usually calculated to represent the whole travel.
The average speed is the total distance (d) traveled by the object divided by the elapsed time to cover that distance (t):
The airplane covers a distance of d=1200 m in t=90 s. The average speed is: