Answer:
Explanation:
This is the formula for centripetal acceleration in terms of the tangential velocity (v) and the radius of the circular motion (r). The expression for the acceleration is already given, so simply type it as shown:
For the velocity (v) multiply by "r" both sides and then use the square root to solve for v:
For the radius multiply both sides by r and then divide both sides by the acceleration (a) in order to isolate r completely:
Answer:
C.)Finding the area bound by the horizontal axis and the curve from 0 s to 5 s
D.)Using Average Speed = total distance/total and multiplying the average speed of 5m/s by a total time of 5 s
Explanation:
The graph seems to be missing, however we can still answer the question.
In fact, we have to keep in mind the following facts:
- In a velocity-time graph, the area under the curve represents the displacement of the object, while the slope of the curve corresponds to its acceleration.
From this, we can already say that the following option:
C.)Finding the area bound by the horizontal axis and the curve from 0 s to 5 s
is correct, while the statement
A.)Finding the slope of the line between 0 s to 5 s
is wrong.
Moreover, the average speed of an object in motion is given by
where d is the total distance covered while t is the total time taken. Once we have calculated the average speed, the total displacement over a certain time period can be simply calculated by multiplying the average speed by the time interval: so, the option
D.)Using Average Speed = total distance/total and multiplying the average speed of 5m/s by a total time of 5 s
is also correct.
The last option remained:
B.)Dividing the change in velocity between 0 s to 5 s by the change in time
is wrong, because in this way we are calculating the acceleration, not the displacement.
Answer:
<em>The battery voltmeter should read 300 Volt</em>
Explanation:
<u>Ohm's Law</u>
It states that the current through a conductor is directly proportional to the voltage applied to it and inversely proportional to the resistance of the conductor. This relationship can be written as
Solving for V
V=IR
The electric circuit has a resistance of 30 ohms and carries a current of I=10 A, thus the voltage is:
V = 10 A * 30 Ohm
V = 300 Volt
The battery voltmeter should read 300 Volt