Answer:
126 J
Explanation:
The potential energy only depends on the vertical height from the ground level.
We consider the ground level to have zero P.E.
We get, when it is 4.5 m above the ground level,
P.E. = mgh
= 2.8×10×4.5
= 126 J
Answer:
a). <u>Silver</u><u>,</u><u> </u><u>Ag</u>
b). <u>Iron</u><u>,</u><u> </u><u>Fe</u>
c). <u>Copper</u><u>,</u><u> </u><u>Cu</u>
d). <u>Aluminium</u><u>,</u><u> </u><u>Al</u>
e). <u>Gold</u><u>,</u><u> </u><u>Au</u>
Imagine you walk 8 blocks, then you turn back and walk 3 blocks
your position from your home is 8 - 3 = 5
your distance is 8 + 3 = 11
There's no such thing as "an unbalanced force".
When the entire group of forces acting on an object is unbalanced,
meaning that the net force on the object is not zero, then the object
moves with accelerated motion . . . it may speed up, it may slow down,
or its speed may remain constant while its direction changes.
Answer:
Because the energy is waning
Explanation: hope this helps
