Answer:
u = 18 cm
Explanation:
given,
radius of curvature = 60 cm
magnification of mirror = 2.5
distance of object = ?
R = 2 f
f = R/2
f = 60/2 = 30 cm


v = -2.5 u
now,
Using mirror formula
u = 0.6 x 30
u = 18 cm
distance of object be equal to u = 18 cm
Speed can be found through the application of concepts related to potential energy and kinetic energy, for which you have


Where,
m = mass
v = Velocity
g = Gravitational acceleration
h = Height
Re-arrange to find the velocity we have,




Therefore the speed at which water squirts out of the hole is .3253m/s
Charging phenomenon is basically transfer of electrons from one system to other. When a system loses the electrons the it becomes positively charged and when a system gains electrons then it will become negatively charged
so here if slab is rub against fur then one of them will lose the electrons while other will gain the electrons and hence one will get negatively charged and other will get positive charge
Here it is given that slab get negatively charged so correct options are
<em>3. Electrons move from the fur to the slab.
</em>
<em>6. The fur becomes positive after rubbing the slab.
</em>
An object in motion lolllsss
The horizontal speed of the object 1.0 seconds later is 1) 5.0 m/s.
Explanation:
The motion of an object thrown horizontally off a cliff is a projectile motion, which follows a parabolic path that consists of two independent motions:
- A uniform motion (constant velocity) along the horizontal direction
- An accelerated motion with constant acceleration (acceleration of gravity) in the vertical direction
This means that the horizontal speed of an object in projectile motion does not change, and remains constant during the whole motion.
Since in this case the object has been launched with a horizontal speed of
v = 5.0 m/s
this means that this speed will remain constant during the motion, so its horizontal speed 1.0 s later is also 5.0 m/s.
Learn more about projectile motion:
brainly.com/question/8751410
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