<span>When picking up a load, the correct fork spacing must be spaced in an evenly manner in which the centre stringer of the pallet and the balance of the load should be spaced evenly in which makes the picking up the load to be correct and well-balanced.</span>
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:
<u>Explanation</u>:
Consider the given function
Given that the velocity of rocket is increases at the rate of
The mass of rocket is decreasing at rate of .
Hence
Now find the rate of change of kinetic energy when and
Now consider the given equation,
Now substituting the values and
The rate at which kinetic energy changing is 25MJ
Answer:
The value of final velocity of the first hockey puck 2.3
Explanation:
Mass of hockey puck = m
Initial velocity
From conservation of momentum principal
4.5 m = m + m × × 3.5
= 1.5
0 = m + m × × 3.5
= - 1.75
Now final velocity of first puck
Put the values in above formula we get
2.3
This is the value of final velocity of the first hockey puck.