Answer:
1.82
Explanation:
The mechanical advantage of a simple machine is the ratio between the output force (load) and the input force (effort).
For a perfect wedge (efficiency of 100%), the mechanical advantage is also given by:
where:
L is the length of the slope
w is the width of the wedge
For the wedge in this problem, we have:
L = 5.1 cm is the slope length
w = 2.8 cm is the width
Therefore, the mechanical advantage is:
Answer:
i don't know if this is good for you but
Explanation:
ignoring frictional air resistance (drag) the speed on return is the same as when it left the ground (5 m/s but in the opposite direction).
Note: this points out a good reason for not firing live bullets into the air..they will return somewhere and at the same speed.
However, if you take into account the atmospheric drag the reurn speed will be somewhat smaller (but in the case of a bullet, probably still lethal.) Drag depends on many factors and is difficult to calculate.
Answer:
When light enters from air to water i.e. it is moving from rarer to denser medium, it changes its original path as there is a change of speed of light and deflects itself towards the normal. This is known as the refraction of light and this is why a pencil in a cup of water looks as if it is broken and larger.
Explanation:
Answer:
A material that contains three elements joined in a fixed proportion will be a <u><em>compound.</em></u>
Explanation:
An element can be described as a substance that is made of only one kind of atom.
<em>On the other hand, a compound can be described as a substance that is made up of more than one atom or elements. A compound can contain fixed proportions of each element that it is made of or it can even contain different proportions of each element. </em>
For example, carbon dioxide is a compound which will always contain 12 grams of carbon for every 32 grams of oxygen.
Answer:
Welcome ShalomMHNCB Phx
Explanation:
the answer is because I just had this question and I got it wrong so te answer is 0.43