If the power source is 9.0 volts, the current will
be 0.27 amps. The correct answer between all the
choices given is the third choice or letter C. I am hoping that this answer has
satisfied your query and it will be able to help you, and if you would like,
feel free to ask another question.
A. Up and to the right
B. Put it in the opposite direction so it won’t go left
Velocity of an object is given as
now we have
time = 3 hours
now from above formula
so its velocity is 40 mph and its a vector quantity whose direction is towards NORTH
correct answer is B
Answer:
a) 915 m
b) 0.15 W/
Explanation:
solution:
a) The wavelength of the microwaves electromagnetic wave is:
λ=
=
=0.025 m
the circular radar antenna acts like a circular aperture of diameter D will have a bright central maximum of diameter:
w=2.44λL/D
so at 30 km screen:
w=2.44λL/w
=2.44*0.025*30*10^3/2
=915 m
b)
The area of a beam at 30 km is:
A=
=
=
=
the average microwave intensity is equal to the ratio of the power of the antenna and area of the beam:
I=P/A
So at 30 km:
I=100*10^3/657*10^3
=0.15 W/
<u>Both given statements are true.</u> An atom has a nucleus, an electron cloud, and subatomic particles.
There are two main parts of an atom i.e. nucleus (protons + neutrons) and the electron cloud which is composed of three subatomic particles: electrons, protons, and neutrons.
An electron is a subatomic particle having a negative charge on it.
While protons are positively charged particles and are found in the nucleus of an atom due to strong nuclear forces.
On the other hand, a neutron, as the name suggests, is a neutral subatomic particle having no charge at all.
If you need to learn more about subatomic particles click here:
brainly.com/question/16847839
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