Answer:
μ = 0.265
Explanation:
F = ma
mgsinθ - μmgcosθ = ma
gsinθ - μgcosθ = a
gsinθ - a = μgcosθ
μ = (gsinθ - a) / gcosθ
μ = (9.81sin26 - 1.96) / 9.81cos26
μ = 0.265439...
First law of thermodynamics is based on conservation of energy that states that energy can never be destroyed, it changes from one form to other form of energy. As in the given image, boiler gives thermal energy in the form of steam and this thermal energy do work on turbine by rotating it.
Second law of thermodynamics states that heat energy always moves from high temperature region to low temperature region until no external energy is given. As in the given image, boiler have high temperature steam and turbine is low temperature region. Therefore, high temperature stream moves from lower area to the turbine.
Hence correct answer -
First law: Thermal energy is used to do work on the turbines.
Second law: High-temperature steam flows to an area of lower temperatures in the turbines.
Explanation:
It is given that,
Focal length of the concave mirror, f = -13.5 cm
Image distance, v = -37.5 cm (in front of mirror)
Let u is the object distance. It can be calculated using the mirror's formula as :
u = -21.09 cm
The magnification of the mirror is given by :
m = -1.77
So, the magnification produced by the mirror is (-1.77). Hence, this is the required solution.
The force F exerted by an electric field on a test charge q is given by:
From this equation we notice that if we change the test charge then the force will change as well.
Therefore, the forces on the charges will not be the same.
We can't determine the electric field without further information on the problem; we need the force on one of the test charges to determine the magnitude of the field.
Answer:
Force is a push or pull action between objects. Pressure is force acting on a surface area of an object, thus it is force per unit area.
Explanation: