Answer:
buoyant force
Explanation:
The buoyant force is the pressure that is exerted on a immersed object by the surrounding fluid.
The buoyant force acts on the surface of the solid object even if the object is immersed in the fluid partially or completely. If the object is immersed in a fluid, the net force is given by the formula:
where Patm is the atmospheric pressure at the top of the object
pgh = pressure of the part in the fluid
F(bottom) is the upward force on the object
The net force is the same as the wight of the displaced object.
The principle is known as the Archimedes principle as the buoyant force is equals the weight of the fluid displaced by the object.
Answer:
a) 104
b) 106
c) 884 mA
Explanation:
The ratio of the transformer is given by:
We need to know the current in the primary in order to obtain the power applied.
The current rating of the fuse is the current on the primary, 884mA as we calculated before in order to obtain the power.
Answer:
The length and the magnification of this telescope are 41 cm and 0.108.
Explanation:
Given that,
Focal length of first lens f= 4.0 cm
Focal length of other lens f'= 37 cm
We need to calculate the length of the telescope
Using formula of length
Put the value into the formula
We need to calculate the magnification of the telescope
Using formula of the magnification
Put the value into the formula
Hence, The length and the magnification of this telescope are 41 cm and 0.108.