Answer:
How is high-speed internet typically transmitted around the world? over telephone wires b. through fiber optic cables c. beamed wirelessly to homes d via satellites
Explanation:
This is my notes from last year my teacher really dumbed it down for us lol and it really helped but I'm not so sure if ur question would be answer with this but ik it will help with other problems for Physics I just thought I would share it I hope this helps have a lovely nite and good luck with this question let me know if the pics are good or not!
Answer:
The ball is making a circular motion. The centripetal acceleration in a circular motion is
~
Explanation:
Normally in physics questions like this, we use all the information in the question. Here, we left out the mass or the height of the object. I assume there is more sub-questions that is not shared here. However, the centripetal acceleration can be found by using the velocity and the radius only.
Answer:
2.82 D
Explanation:
Near point of the person eye is 85 cm that is
He wants to see the object at 25 cm so
For the lens we know that
\frac{1}{f}=0.04-0.01170=0.02823
We know that power of the lens
So
Answer:
The maximum force that can be applied without causing the two 43- kg crates to move is 2.7KN
Explanation:
Given data
μ coefficient of friction 0.31
mass of two crates =2*43kg
=86kg
Weight of the two crates =mg
Assuming g= 9.81m/s²
W =86*9.81= 843.66N
We know that force against friction is given by
W =μR
Where
μ is coefficient of static friction
R limiting force
To solve for let's make it the subject of the formula
R= W/μ
R=843.66/0.31
R= 2721.5N
R= 2.7KN