Answer:
Drag or air resistance
Explanation:
The force of friction caused by a moving fluid is called drag. When that fluid is air, it's also known as air resistance.
Aaaaaaaaaaaaaaaaaaaaaaaaa
Answer:
i) 0.7
ii) 1.39
iii) 0.6
Next time, when compiling a Physics question, ensure you put the unit of each measurement.
Explanation:
i) T = time of flight =
where u = speed = 4, A = 60 and g = acceleration due to gravity = 10 (It is a constant);
Subsituting the values, we have: T = = 0.7
ii) distance travel = Range = R =
where u = speed = 4, A = 60 and g = acceleration due to gravity = 10 (It is a constant);
Subsituting values, we have: R = = 1.39
iii) Maximum Height = H =
where u = speed = 4, A = 60 and g = acceleration due to gravity = 10 (It is a constant);
Subsituting values, we have: = 0.6
Answer:
magnetic field = - 6.137 × T
Explanation:
given data
radio wave λ = 0.3 m
intensity I = 45 W/m²
time t = 0
time t = 1.5 ns
to find out
What is Bz
solution
we use here equation of intensity of radiation of electric field that is express as
intensity = .................1
here we know intensity 45 and c is 3 × m/s² and ∈o is 8.85 × C²/N.m² and E will be here
E = ...............2
E =
E = 184.15
and
E = .................3
184.15 =
= 6.137 × T
and in z axis magnetic field will be here as
B = ..............4
here k =
k = = 20.94
and
f =
f = =
so here
time t =
t = =
so ω =
ω =
ω = 6.28 ×
so now from equation 4
B =
B =
B = - 6.137 ×
so magnetic field = - 6.137 × T
This is the definition for brass:
“Brass is an alloy of copper and zinc, in proportions which can be varied to achieve varying mechanical and electrical properties. It is a substitutional alloy: atoms of the two constituents may replace each other within the same crystal structure.” Here is an image comparing it to gold