Asolid sphere of radius r is placed at a height of 30 cm on a 15° slope. it is released and rolls, without slipping, to the bottom. from what height should a circular hoop of radius r be released on the same slope in order to equal the sphere’s speed at the bottom?
b) can a circular hoop of different diameter be released froma height of 30 cm and match the sphere's speed at the bottom? if, so what is the diameter? if not, why not?

idk sorry i only needs point for apex

explanation:

the box does not move because you need to use a force greater than 300 n. you are only using 50 n. it needs to at least be 301 n for the box to move because then it is an unbalanced force and it will move the way that the greater force is pushing it. if you use only 300 n it will be a balanced force and will not move because the force you are exerting on the   box is the same as its force.

hope this !

im sorry if i went too in depth, i am going to include a link to a video on khan academy that will explain this.   hope that you like the video and that it explains more in detail to you.

that is the link.

he made 11 calls in one day

when a device is used in a circuit in which the voltage is 81 v, the current flowing through the device is 3 a. what is the resistance of the device?

a. 27 ω

b. 40.5 a

c. 243 ω

d. 243 a

the correct answer is a. 27