Explanation:
KE = 1/2mv^2
6,250 J =1/2(250kg) v ^2
<u>6250 J </u>= <u>125kgv^2</u>
125kg. 125kg
v =
According to the United Nations, there are <em>54 </em>countries in Africa today (late 2018).
Answer:
because thermometric liquid readily expands on heating or contracts on cooling even for a small difference in the temperature of the body.
Answer:
a).
b).
Explanation:
a).
The work of the spring is find by the formula:
So knowing the work can find the constant K'
Solve for K'
b).
The force of the spring realice a motion so using the force and knowing the accelerations can find the mass
28J because mechanical energy is the sum of the potential energy and kinetic energy