Answer:
16.67 rad/s
Explanation:
if you read the question, you would notice that some requirements are missing, while searching online, the complete question can be found here:
https://www.chegg.com/homework-help/questions-and-answers/frictionless-pulley-modeled-080-solid-cylinder-030-m-radius-rope-going--tension-rope-10-n--q3499646
and here is the complete question:
"a frictionless pulley which can be modeled as a 0.80 solid cylinder with a 0.30 m radius has a rope going over it. The tension in the rope is 10 N on the right side and 12 N on the left side. What is the angular acceleration of the pulley?
"
mass (m) = 0.8 kg
radius (r) = 0.3 m
tension on left side (T1) = 10 N
tension on right side (T2) = 12 N
angular acceleration = torque / moment of inertia
where
torque = (12-10) x 0.3 = 0.6 Nm
- moment of inertia = 0.5m
moment of inertia = 0.5 x 0.8 x = 0.036 kg
therefore
angular acceleration = 0.6/0.036 = 16.67 rad/s
Answer:
Explanation:
Check the attachment for the ray diagram
Ray diagrams are important in locating the position of image of an object. It enables us to determine the nature of image formed by an object in from of a mirror or lens.
When drawing ray diagrams to locate the image I of an object O, there are two important steps to follows:
1. Ray emitted from the tip of an object O incidented on the mirror and parallel to the principal axis OP pass towards the focus F of the mirror after reflection.
2. The ray emitting from the tip of the mirror and passing through the centre of curvature of the mirror C undeflected reflects back on the same line of incidence. (Principle of reversibility).
I think 1 and 3 is absolutely right but im not sure about number 2.
I think the answer is 4 all of the above because as the vibration decrease automatically the kinetic energy decrease and the temperature is decrease because when the vibration of molecules decrease thats mean the substances is slightly become a solid and you can get a solid cube of liquid if you freeze them
Answer:
1.
A:Time (minutes)
B: Temp(degrees c)
2. Downward trend (temperature goes down as time goes on )
3.
A: not sure
B: temperature
4.the temperature is going down
5. Closes off any open airways
Answer:
offer them a refund or a remake/ replacement of food item whilst apologizing sincerely