Answer:
B. Decrease the plane’s speed and height
Explanation:
Decrease in speed of plane:
When the speed of the plane is decreased then initial velocity of the package will be lesser. As a result, final velocity will also be lesser because in this case final velocity depends upon the initial velocity.
Decrease in height:
According to law of conservation of energy:
Loss in potential energy = Gain in Kinetic energy
mgh = ½ mV^2
It means with the decrease in height less potential energy will be converted to kinetic energy. As package has constant mass so it will gain less velocity.
The simple definition of work is the product of the force applied to the object and the displacement:
W = Fd
W is the work, F is the applied force, and d is the displacement.
Givens:
W = 5.0N-m
F = 25N (the applied force must be at least equal to the weight to lift it)
Plug in the given values and solve for d:
5.0 = 25d
d = 0.20m
<u>Given that:</u>
height (h) = ?
mass (m) = 2 Kg ,
Potential energy (P.E.) = 100 J ;
We know that P.E = m × g × h
100 J = 2 × 9.81 × h
h = (100) ÷ (2 × 9.81)
<em> h = 5.09 m</em>
On the surface of the earth, an object with a mass of 100 kg will weigh approximately 980 Newtons.
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It is malleable
Explanation:
The property that makes metals such as sterling silver the best to create hammered earrings is their malleability.
All metals have a unique and fascinating property of being malleable. They can be carved into any of shape. When hammered they simply draw out and retain their long range ordering of their crystal lattice.
This is made possible by the presence of metallic bonding between the atoms.
- The bulk of the physical properties of metals can be attributed the metallic bonds in them.
- Metals have large sea of electrons in them.
- In forming metallic bonds, there is an attraction between the positive nuclei of all the closely packed atoms in the lattice and the electron cloud jointly formed by all the atoms by loosing their outermost shell electrons.
- Metals like silver have low ionization energy.
- When they are hammered, they spread out the energy from the hammering.
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Metals brainly.com/question/2474874
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