Wavelength = (speed) / (frequency)
Wavelength = (330 m/s) / (1320/s)
Wavelength = (330/1320) m
Wavelength = 0.25 m
<em>Wavelength = 25 cm</em>
<span>Force = Work done / distance = 4Nm / 2m = 2N</span>
Sadly, I haven't read the chapter, and I can't see Table 3.
But I've seen this fun question before, so instead of reporting
the question for incomplete content, I'm going to answer it
and take your points.
a). one decaration
b). two kilomockingbirds
c). one microphone
d). one nanogoat
e). one examiner
By the way ... perhaps it hadn't occurred to you, but YOU could have
easily answered these completely on your own. All you'd need to do
is take a look at Table 3 in the latest chapter of your Physics book !
Answer:
Magnitude = 4.056 m
Direction = 42.3⁰
Explanation:
The vector is resolved in terms of the vertical and horizontal components. Let's look each of these separately.
The vector 4.40 is directed East. This automatically becomes a horizontal component.
But we know that there is a vector 3.40 North West. The angle the vector makes with the horizontal is 61⁰.
Resolving the vectors should yield the horizontal and vertical components:
Horizontal components
The first component is 4.40 m
The second one is derived by resolving 3.40 to the horizontal like this 3.40 × - cos 61⁰ = -1.648 m
Adding the horizontal component gives 4.40 m + ( -1.648 m) = 2.752 m
Vertical components
Resolve 3.40 with the angle 61⁰ like this: vertical comp = 3.41 × sin 61
= 2.98 m
The magnitude is given by √[(2.98)²+ (2.752)²] = 4.056 m Ans
The direction us given by tan⁻¹ (2.98/2.752) = 42.3⁰ Ans
No because if there is a force, there is acceleration which means the object is getting faster.