Answer:
and
Magnitude of accleration is and the direction is
Explanation:
Average acceleration in the different axes
The components of the acceleration is and
The magnitude of acceleration
Direction
The magnitude of accleration is and the direction is .
Answer:
1. The reason why nichrome wire is used in a heater is due to the properties of nichrome which makes it a material of choice for heating application including;
i) The cost of manufacture of nichrome is low
ii) Nichrome has both high mechanical and creep strength, and therefore is suitable for installation and use in a wide setting
iii) Nichrome has a high resistance to electron flow, making it a good electrical heating element
iv) Nichrome has a high resistance to oxidation, such that it can be reused several times as a heater
v) The high ductility of nichrome allows it to be stretched and drawn around different vessels with contents to which heat is to be supplied
2. Copper wire is not used in heaters because according to Joule's law, the heat produced from the flow of electric current, 'I', through a material having a resistance, 'R', for a time, 't', is proportional to I²·R·t, and copper has a very low resistance, 'R', to the flow of electric current, and therefore, will not produce sufficient heat required at a given current level
Explanation:
Answer:
Physical equilibrium is defined as the equilibrium which develops between different phases or physical properties. In these processes, there is no change in chemical composition. The following are some examples of Physical Equilibria: Solid-Liquid Equilibria. Please give me the brainliest answer?
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A . Thermal
Thermal Energy, or heat, is the internal energy in substance the vibration & movement of the atoms & molecules within substances. Geothermal energy is an example of thermal energy.
The work done to drag the box is 9 J.
Explanation:
Work done is the measure of force required to displace a certain object to a certain distance. So it can be measured as the product of force with displacement along with the angle in which the displacement is made.
As here the force acting on the box is said to be 75 N. And as it is moved horizontally in an angle of 36°. It is also said that the box is displaced by 150 m.
So, the work done will be
So α is the angle, F is the force, d is the displacement and W is the work done.
So, the work done to drag the box is 9 J.