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3 years ago

PLEASE HELP!!

Engineering

2 answers:

MrRissso [65]3 years ago

7 0

Answer:

Boat (also known as Noah's Ark)

monitta3 years ago

6 0

Ark but it’s basically a boat

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A steel cylindrical pressure vessel has an inside diameter of 2m and a wall thickness of 2cm. If the steel has a yield stress Y

Feliz [49]

Answer:

The pressure that will cause yielding in the tank in the longitudinal direction is 1.7 Mpa

Explanation:

We are dealing with a thin-walled pressure vessel here.

the formula for calculating the hoops stress of this pressure vessel is $\sigma =P d/4t$

$\sigma Y =$ longitudinal yield stress = $425 \times 10^{6} Pa$

Thickness = 2/1000 =0.002m

Outside diameter = inside siameter + thickness = 2m + 0.002m= 2.002m

Dm = Mean diameter = Outside diameter - thickness = 2.002 - 0.002 = 2m

$P= 425 \times 10^{6} \times 4 \times 0.002 /2=1.7 Mpa$

4 0

3 years ago

How can you kill someone but not kill some one but end up killing them?

sattari [20]

dkrktiroro49r9494949rototototofklfkfkrororor

5 0

3 years ago

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Consider a refrigerator that consumes 320 W of electric power when it is running. If the refrigerator runs only one quarter of t

Semenov [28]

Answer:

B. $5.18

Explanation:

Cost of electricity per kWh = $0.09

Power consumption of refrigerator = 320W = 320/1000 = 0.32kW

In a month (30 days) the refrigerator works 1/4 × 30 days = 7.5 days = 7.5 × 24 hours = 180 hours

Energy consumed in 180 hours = 0.32kW × 180h = 57.6kWh

Cost of electricity of 57.6kWh energy consumed by the refrigerator = 57.6 × $0.09 = $5.18

3 0

4 years ago

Read 2 more answers

A motorist is driving his car at 60km/hr when he observes that a traffic light 250m ahead turns red. The traffic light is

Alecsey [184]

Explanation:

Okay soo-

Given-

u = 60 km/hr = 60×1000/3600=50/3 m/s

t = 20 s

s = 250 m

a = ?

v = ?

Solution -

Here, acceleration is uniform.

(a) According to 2nd kinematics equation,

s = ut + ½at^2

250 = 50/3 ×20 + 0.5×a×20×20

250-1000/3=200a

(750-1000)/3=200a

a = -250/(3×200)

a = -5/12

a = 0.4167 m/s^2

The required uniform acceleration of the car is 0.4167 m/s^2.

(b) According to 1st kinematics equation

v = u + at

v = 50/3 + (-5/12)×20

v = 50/3-25/3

v = 25/3

v = 8.33 m/s

The speed of the car as it passes the traffic light is 8.33 m/s.

Good luck!

5 0

3 years ago

What is centrifugal force with respect to unbalance? What is the formula used to determine centrifugal force?

3241004551 [841]

Answer:

$F = \frac{m * v^2}{r}$

Explanation:

Once the centrifugal forces are equivalent as an object rotates, it is called "in equilibrium." If the point of impact of the moving object does not align with the center of the rotation, unequal centrifugal forces are produced and the rotating component is "out of equilibrium."

Two conditions for balanced condition are: static and coupled. Static equilibrium relates to a one plane mass in which the unit is balanced by weight inverse the unbalanced mass

formula used to calculate centrifugal mass is $F = \frac{m * v^2}{r}$

where, m is mass, v is speed of body. r is radius

4 0

3 years ago