a) mg = * ω
b)ω =
c)14.7 the magnitude of the initial acceleration of the end B when the string is cut.
<h3>What is Acceleration?</h3>
Acceleration is the rate of change of the velocity of an object with respect to time.
Given
A rod of length 56.0 cm and mass 1.40 kg is suspended by two strings which are 42.0 cm long, one at each end of the rod.
When the string is cut rod rotates about other end.
Let's take momentum equation about that end:
mg* = Iω [I = ]
a) mg = * ω
Angular acceleration:
b)ω =
c)Acceleration of end B:
a = lω= =
a = 14.7 [g=9.8]
Learn more about Acceleration here:
brainly.com/question/12550364
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Answer:
The observer could see to a depth of 4.38 m
Explanation:
Please check attachment for diagram.
Mathematically, from Snell law;
n1sin theta = n2 sin theta
1 * sin 90 = n2 * sin θR
where n2 = 1.33
1/1.33 = sin θR
Sin θR = 0.7519
θR = arc sin 0.7519
θR = 48.76
Now to get the height, we use the triangle
Using trigonometric ratio;
Tan( 90- θR) = H/5
H = 5 Tan( 90 - θR)
H = 5 Tan( 90-48.76)
H = 5 Tan41.24
H = 4.38 m
Answer:
48 m
Explanation:
An object is said to be moving in uniform motion if its velocity is constant.
For an object in uniform motion, its average speed is given by the equation:
where
v is the average speed
d is the distance covered
t is the time taken
For the object in this problem, we have:
v = 6.0 m/s is the average speed
t = 8.0 s is the time taken
Solving for d, we find the distance traveled:
^they’re correct! it is weathering, i just took a test with that answer:)