Answer:
The work done by the child to reach the cat is, W = 3684.8 J
Explanation:
Given data,
The mass of the child, m = 40 kg
The height of the cat from the ground, h = 9.4 m
The force acting on the child due to gravitational force is,
F = mg
The minimum force required by the child to climb the tree against the gravitational force is,
F = mg
Hence, the work done by the child is,
W = F · h
= 40 x 9.8 x 9.4
= 3684.8 joules
Hence, the work done by the child to reach the cat is, W = 3684.8 J
Current = (voltage) / (resistance)
= (35 volts) / (1,400 ohms)
= 25 milliamperes
Answer: Nervous system!
Explanation:
The nervous system sends and receives electrical messages all through out your entire body to instruct it on what to do or help send messages to the brain about what’s happening to that certain area.
To develop this problem it is necessary to apply the concepts related to electromagnetic energy and Broglie's hypothesis.
By definition we know that the electrical energy of a proton can be expressed as
E = qV
Where,
q = Charge of proton
V = Voltage
Replacing with our values
E = qV
It is necessary to add the two potentials
From Broglie's hypothesis we know that the wavelength is given by
Where,
h = Planck's constant
p = Momentum
The momentum of a particle can be expressed in terms of energy, that is,
Where,
m = mass
E = Energy (potential or kinetic)
Therefore replacing this value at lambda,
1.If a compound is made from a metal and a non-metal, its bonding will be ionic.
2.If a compound is made from two non-metals, its bonding will be covalent.
