<span>D. in back of the lens, because the rays are unaffected until it goes through the lens. In that moment the direction of the rays is modified, making them get closer to each other and all of them converge in a point behind the lens.</span>
Answer:
a) 
b) 
Explanation:
The law of conservation of mechanical energy states that total mechanical energy remains constant during oscillation. Mechanical energy is defined as the sum of kinetic energy and potential energy:
a) The position is one-third the amplitude. So, we have 
. Replacing and solving for K
b) The potential energy is defined as:
Replacing:
Answer:
the answer is ture
Explanation:
because the energy substances must absorb in order to change from liquid to gas
Answer:
Explanation:
kinematic equation (g will have a negative value if we assume UP is positive)
v² = u² + 2as
a) v = √(0² + 2(g)(y - h))
b) v = √(vi² + 2(g)(y - h))
Answer:
Depth is 7.49cm
Explanation:
Given that;
The diameter of tube is (D)=4.7cm
Area of the tube is =πD^2/4
Area is 3.142*4.7*4.7/4=17.35cm2
Mass(M)=130g
Density =1g/cm^3
Recall that Density =mass /volume
Hence volume =130/1=130cm^3
Also note
Volume=area*depth
130=17.35*depth
Depth=130/17.35=7.49cm
