Answer:
0.59 cm
Explanation:
height of cup (h) = 10 cm
radius of cup (r) = 10 cm
rate of change of water level (V') = 16π/3
rate of change of height (h) = 3 cm
the ratio of the height to radius (h:r) = 10:10
h/r = 10/10
h/r = 1
r=h
formula for volume of a volume (v) = .πh
substituting r=h into the formula above we have
v = .π. h = .π
differentiating the above we have
v' = 3(π)h' = π.h'
rearranging the above we have
h' = v' / (π)
where
- v' = rate of change of water level
- h' = rate of change of water level
- h = water level
h' = ((16 x π) / 3) ÷ ( π x )
h' = ((16 x 3.142) / 3) ÷ ( 3.142 x )
h' = 16.76 / 28.28
h' = 0.59 cm
Answer:a)In a circuit, an electric field is created. This electric field forces electrons to move. ... A potential difference in a circuit merely means that work is done on electrons by an electric field as they pass through the circuit and their potential energy changes.b)When the two ends of a cell are connected to a bulb using metal wires, the bulb emits light. The bulb glows due to flow of electric current from the positive terminal to the negative terminal through the filament of the bulb. Such a circuit is called a closed circuit.
Explanation:
Answer:
(a) Minimum permissible diameter d1 is 2.4896 in
(b)Minimum permissible diameter d3 is 1.6666 in
(a)
The radius of the sphere is:
r = 12.5 cm
So the volume of the sphere of gold is
The density of gold is
So the mass of the sphere is
(b)
The length of one side of the cube is
L = 0.049 mm = 0.0049 cm
So the volume of the cube of platinum is
The density of platinum is
So the mass of the cube is
(c) 53.5 g
The volume of the ethanol is
V = 67.1 mL
While its density is
d = 0.798 g/mL
So the mass of the ethanol is
Answer:
A
Explanation:
magnifying = enlarging something or making it seem bigger