Light shows duality i.e it shows properties of both particle as well as wave.
Answer:
a)
b)
Explanation:
Given:
mass of bullet,
compression of the spring,
force required for the given compression,
(a)
We know
where:
a= acceleration
we have:
initial velocity,
Using the eq. of motion:
where:
v= final velocity after the separation of spring with the bullet.
(b)
Now, in vertical direction we take the above velocity as the initial velocity "u"
so,
∵At maximum height the final velocity will be zero
Using the equation of motion:
where:
h= height
g= acceleration due to gravity
is the height from the release position of the spring.
So, the height from the latched position be:
You are unable to lift an object.
The Weight makes the object difficult to lift.
<h3>How can we state the above statement?</h3>
To calculate weight, we know from the formula that,
W=mg
Here in the formula,
w= the weight of the object.
m= mass of the object.
g= the acceleration due to gravity.
Also this is defined as force which acting on a object due to gravity. This kind of force usually it acts downwards.
This type of force has to overcome for it to be lifted up by individuals which is why Weight makes the object difficult to lift.
Now from the above discussion we can easily state that, The Weight is the property that makes the object difficult to lift.
Learn more about Weight:
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Sound needs a medium to propagate through and this medium which is moves through is the air. The colder the temperature is, the less excited (meaning kinetic energy) the air particles will be meaning that the sound wave will travel slower. In the sahara desert, since the temperatures are warmer, and more excited, the sound will propagate faster through the air.
*Note that sound waves rely on vibration to move and if the air is hotter the molecules in the air are vibrate more than compared to lower temperatures.