Answer:
At the closest point
Explanation:
We can simply answer this question by applying Kepler's 2nd law of planetary motion.
It states that:
"A line connecting the center of the Sun to any other object orbiting around it (e.g. a comet) sweeps out equal areas in equal time intervals"
In this problem, we have a comet orbiting around the Sun:
- Its closest distance from the Sun is 0.6 AU
- Its farthest distance from the Sun is 35 AU
In order for Kepler's 2nd law to be valid, the line connecting the center of the Sun to the comet must move slower when the comet is farther away (because the area swept out is proportional to the product of the distance and of the velocity: , therefore if r is larger, then v (velocity) must be lower).
On the other hand, when the the comet is closer to the Sun the line must move faster (, if r is smaller, v must be higher). Therefore, the comet's orbital velocity will be the largest at the closest distance to the Sun, 0.6 A.
The final angular velocity is 8.6 rad/s
Explanation:
To solve this problem, we can use the equivalent of the suvat equations for the angular motion. In particular, we can use the following equation:
where:
is the final angular speed
is the initial angular speed
is the angular acceleration
t is the time
For the propeller in this problem, we have:
is the initial angular speed
is the angular acceleration
Substituting t = 3.0 s in the equation, we find the final angular velocity:
Learn more about angular motion:
brainly.com/question/9575487
brainly.com/question/9329700
brainly.com/question/2506028
#LearnwithBrainly
To solve this problem it is necessary to apply the concepts related to the magnetic flow of a coil and take into account the angles for each case.
It is also necessary to delve into part C, the concept of electromotive force (emf) which is defined as the variation of the magnetic flux as a function of time.
By definition the magnetic flux is determined as:
Where
N = Number of loops We will calculate the value for each of the spins
B = Magnetic Field
A = Cross-sectional Area
Angle between the perpendicular cross-sectional area and the magnetic field.
PART A) The magnetic flux through the coil after it is rotated is as follows:
PART B) For the second case the angle formed is perpendicular therefore:
PART C) The average induced emf of the coil is as follows:
The power rating on the motor is the maximum power it's ABLE to deliver. It can run with LESS power output than the rating, but if you try to run it with MORE than it's rated, the motor will overheat and eventually burn out.
" 10 watts " means " 10 Joules of enrgy per second ".
If the motor is operated at its full maximum rated capacity, then
(500 joules) / (10 joules/sec) = <em>50 seconds</em>