Answer:
A point on the outside rim will travel 157.2 meters during 30 seconds of rotation.
Explanation:
We can find the distance with the following equation since the acceleration is cero (the disk rotates at a constant rate):
![d = v*t](https://tex.z-dn.net/?f=%20d%20%3D%20v%2At%20)
Where:
v: is the tangential speed of the disk
t: is the time = 30 s
The tangential speed can be found as follows:
![v = \omega*r](https://tex.z-dn.net/?f=%20v%20%3D%20%5Comega%2Ar%20)
Where:
ω: is the angular speed = 100 rpm
r: is the radius = 50 cm = 0.50 m
Now, the distance traveled by the disk is:
![d = v*t = 5.24 m/s*30 s = 157.2 m](https://tex.z-dn.net/?f=%20d%20%3D%20v%2At%20%3D%205.24%20m%2Fs%2A30%20s%20%3D%20157.2%20m%20)
Therefore, a point on the outside rim will travel 157.2 meters during 30 seconds of rotation.
I hope it helps you!
Answer:
The power of electricity will go up.
Explanation:
Because you are putting more batteries into the circuit, then it will be more powerful and use up more electricity
It will accelerate. A force of magnitude <em>F</em> exerted on an object of mass <em>m</em> applies an acceleration <em>a</em> according to
<em>F</em> = <em>m a</em>
Remember that force and accleration are vector quantities, so the object's acceleration would point in the same direction as the applied force. The other choices describe some possible outcomes, but
• it the object starts in motion, it can only stop moving if the force opposes the motion and acts in the opposite direction. The object would eventually stop, but only for an instant before changing direction and starting to move again. Consider a ball being thrown directly upward, reaching its highest point, then falling again.
• its speed (which is a scalar quantity) would only decrease if the object starts in motion and is slowed down. But if it starts at rest, its speed can only increase. Consider a ball being dropped from some height and gaining speed as it falls.
• its velocity will certainly change, but can only increase if the object is at rest, or if it's already in motion and the force points in the same direction.
As the displacement of the maxima is calculated with the equation
(displacement)y=(m<span>λD)/slit separation (d)
halving the split separation doubles the displacement</span>
Answer:
Float
Explanation:
It is given that,
The density of water is 1 g/mL
The density of a rock is 0.87 g/mL
It can be seen that the density of water is more than that of rock. The density of an object is calculated from its mass and volume.
If the density of liquid in which it is placed, is more that that of the object, it will float at the top.
Hence, in this case the rock will float.