2 poin A ball is thrown up into the air at an angle. At what part of its path is the
horizontal component of the velocity the smallest? *
A, when it returns to the ground
B, at the top of its path
C, same throughout
D, when it’s initially thrown right after release

i think they are all correct

explanation:

they seem good

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

weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards