Mechanical advantage is a force which is measure of a force amplifying effectiveness of a simple machine.so t<span>he number of times a machine multiplies the effort force is mechanical advantage .
hope this helps</span>
1) PE=mgh
mass 50 kg; height 3; g 9.81
50×3×9.81=1471.5 J
2. The student is opposing gravity force so
Fgrav=m×g
50 × 9.81= 490N
Work=force×displacement
490×3=1470J(this should always be the same as the potential energy)
3.Power=work×time
4410 W=1470×3
4. Greater than: power is dependent on work, work is dependent on force, force is dependent on weight,
Cells membrain cellwall glucose for a leaf
Answer:
The answer is 5 seconds;
Explanation:
<h3>a) We know that the speed(V) is 15 m/s and acc. (a) is 3 m/s^2 </h3><h3>b) The formula for the acceleration is a=
;</h3><h3>
Using this formula we can define the next equation:</h3><h3>
3 = 
, where t is the sought time. After solving the equation we get that t is 5; </h3><h3>
</h3><h3>
</h3><h3>
</h3>
Answer:
Humans
Explanation:
They are the only ones they drink cows milk and others
