When block C is in position xC = 0.8 m, its speed is 1.5 m/s to the right. Find the velocity of block A at this instant. Note that the rope runs around the pulley B and a pin attached to block C, as indicated.
Answer:
The answer is "2 m/s".
Explanation:
The triangle from of the right angle:
[tex]\to (x_c-0.8)+(1.5+y_4) +\sqrt{x_c^2 + 1.5^2}= constant[/tex]
Differentiating the above equation:
[tex]\to V_c +V_A+ \frac{X_cV_c}{\sqrt{x_c^2 +1}}=0\\\\\to 1-V_A+ \frac{0.8 \times 1.5}{\sqrt{ 0.8^2+1.5}}=0\\\\[/tex]
[tex]\to V_A= \frac{1.2}{\sqrt{ 0.64+1.5}}+1\\\\[/tex]
[tex]= \frac{1.2}{ 1.46}+1\\\\= \frac{1.2+ 1.46}{ 1.46}\\\\ = \frac{2.66}{1.46}\\\\= 1.82 \ \frac{m}{s}\\\\= 2 \ \frac{m}{s}[/tex]
Why is it so dangerous to use a ground lift on a metal cased power tool
Americans spent approximately __ cents of each dollar on the purchase of energy?
Answer:
14 cents
Explanation:
1 trillion US dollar
Which is the most common source of abnormal noises in an air
conditioner?
Select one:
A. Evaporator
B. Condenser
C. Compressor
D. Expansion valve
Answer is: letter B.Condenser
Explanation:
common issue associated with an air conditioner screeching noise is a malfunctioning fan motor in the outdoor condenser unit. The central air conditioning system connected to your home features a fan that is designed to remove heat from the refrigerant.
What is the value of the work interaction in this process?
a. -272 kJ/kg
b. -32 kJ/kg
c. 31 kJ/kg
d. 272 kJ/kg
Answer:
The answer is "[tex]-121\ \frac{KJ}{Kg}[/tex]".
Explanation:
Please find the correct question in the attachment file.
using formula:
[tex]\to W=-P_1V_1+P_2V_2 \\\\When \\\\\to W= \frac{P_1V_1-P_2V_2}{n-1}\ \ or \ \ \frac{RT_1 -RT_2}{n-1}\\\\[/tex]
[tex]W =\frac{R(T_1 -T_2)}{n-1}\\\\[/tex]
[tex]=\frac{0.287(25 -237)}{1.5-1}\\\\=\frac{0.287(-212)}{0.5}\\\\=\frac{-60.844}{0.5}\\\\=-121.688 \frac{KJ}{Kg}\\\\=-121 \frac{KJ}{Kg}\\\\[/tex]
What are motion study principles? How are they classified?
Frederick Taylor created a series of guidelines known as the "motion study principles" to boost productivity at work. Time study, motion study, fatigue study, etc technique conduct research are the four divisions into which they fall.
What is motion study principles?Motion studies are the study of actions like lifting, putting things down, standing, changing direction, and other actions that are made when performing routine work.
In order to execute the task effectively in less time, unnecessary moves are attempted to be removed. The following three headings comprise the fundamentals: Making use of the human body. The layout of the workplace. Machinery and tools design.
Motion study principles will be the which will help in designing or putting films into a particular order. Also how the routine works are being made is suggested.
Learn more about motion study, here:
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53. The plan of a building is in the form of a rectangle with
centerline dimension of outer walls as 9.7mx14.7m. The
thickness of the wall in super structure is 0.30m. Then its
plinth area is
a) 150m
b) 145m2
c) 145.5m
d) 135.36m
.
Answer: 150m
Explanation:
The following can be depicted from the question:
Dimensions of outer walls = 9.7m × 14.7m.
Thickness of the wall = 0.30 m
Therefore, the plinth area of the building will be:
= (9.7 + 0.30/2 + 0.30/2) × (14.7 × 0.30/2 + 0.30/2)
= 10 × 15
= 150m
The plinth area will be 150m.
Given information
Dimensions of outer walls = 9.7m × 14.7m.
Thickness of the wall = 0.30 m
Plinth area of the building = (9.7 + 0.30/2 + 0.30/2) × (14.7 × 0.30/2 + 0.30/2)
Plinth area of the building = 10 × 15
Plinth area of the building = 150m
Therefore, the Option A is correct.
Read more about Area
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True or false It is legal to pass in Florida when approaching within 100 feet of or traversing any railroad crossing grade croead
how to update android 4.4.2 to 5.1 if there isnt any update available
Answer:
You cant update it if there isin´t any update available lol
Explanation:
The two types of outlets that are found in an electrical system are:______
a. lighting and receptacle outlets.
b. receptacle and motor outlets.
c. power and motor outlets.
d. heating and power outlets
Answer:
a. lighting and receptacle outlets
Explanation:
The two types of outlets that are found in an electrical system are
a. lighting and receptacle outlets
Outlets allow electrical equipment to connect to the electrical grid. The electrical grid provides alternating current to the outlet.
if stall speed in ktas for an aircraft us 100 ktas at sea level, what is the stall speed in ktas of the aircraft at 5000 ft density altitude
Answer:
my friend here justin
Explanation:
hes already taken