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kramer
3 years ago
11

Three hotels are located near each other along a popular beach. Hotel 2 decides to build a groin (out into the long shore curren

t). Which of the other hotels will sue to stop the construction?
A. Hotel 1 because they will experience beach nourishment
B. Hotel 1 because they will experience beach erosion
C. Hotel 3 because they will experience beach nourishment
D. Hotel 3 because they will experience beach erosion
Physics
1 answer:
Minchanka [31]3 years ago
7 0

Answer:

D. Hotel 3 because they will experience beach erosion    

Explanation:

A beach groin is a man made structure which is used to protect the beach from sand erosion. It makes the water current to deviate in the other direction thus preventing the beach in the groin area to be eroded.

In the context, constructing a groin by Hotel 2 will prevent beach erosion in its area but this will lead to the soil erosion for the beach in front of hotel 3, thus affecting hotel 3. So Hotel 3 can sue Hotel 2 and stop the groin being constructed by the Hotel 2.

Hence the correct option is (D).

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Two Physics quick help
Free_Kalibri [48]

Answer:

21.3 V, 1.2 A

Explanation:

1.

These resistors are in series, so the net resistance is:

R = R₁ + R₂ + R₃

R = 20 + 30 + 45

R = 95

So the current is:

V = IR

45 = I (95)

I = 9/19

So the voltage drop across R₃ is:

V = IR

V = (9/19) (45)

V ≈ 21.3 V

2.

First, we need to find the equivalent resistance of R₂ and R₃, which are in parallel:

1/R₂₃ = 1/R₂ + 1/R₃

1/R₂₃ = 1/10 + 1/10

R₂₃ = 5

Now we find the overall resistance by adding the resistors in series:

R = R₁ + R₂₃ + R₄

R = 10 + 5 + 10

R = 25

So the current through R₁ is:

V = IR

30 = I (25)

I = 1.2 A

7 0
3 years ago
While you are in a bus that moves at 100 km/h you walk from the back to the front at 10 km/h. What is your speed relative to the
aleksklad [387]

Answer: 110km/h

100+10=110km/h

Explanation:

Motion is defined as a change of position. The frame of reference is usually assumed to be at rest. If one is sitting on a bus, the road appears to be moving backwards relative to the observer. If he/she now walks to the front of the bus, he has a speed relative to the earth which is now greater than that of the bus hence the answer.

5 0
3 years ago
During a circus act, a performer thrills the crowd by catching a cannon ball shot at him. The cannon ball has a mass of m1 = 7.5
vladimir1956 [14]

Answer:

Explanation:

We shall apply law of conservation of momentum .

total Initial momentum =

7.5 x 8.85 = 66.375 kg m / s

total mass = 7.5 + 61.5 = 69 kg , common velocity of ball and performer be v

Total momentum = 69 v

69 v  = 66.375

v = 66.375 / 69

= .962 m /s .

3 0
3 years ago
A force is a push or a pull applied to a body or an object. Consider the workout you just participated in. What forces were pres
Law Incorporation [45]
Gravity and friction
7 0
3 years ago
A 0.30-kg flying pig toy is attached to the ceiling with a string. When the pig’s wings flap, it moves at a constant speed of �
Lesechka [4]

Answer:

58.5 deg

Explanation:

v = mass of the pig toy = 0.30 kg

v = speed of the toy = 2 m/s

r = radius of the circle = 0.25 m

\theta = Angle of the string with the vertical = ?

T = Tension force in the string

Using equilibrium of force in vertical direction

T Cos\theta = mg                                     eq-1

Along the horizontal direction, the component of tension force provides the necessary centripetal force, hence

T Sin\theta = \frac{mv^{2}}{r}                                  eq-2

Dividing eq-2 by eq-1

\frac{T Sin\theta}{T Cos\theta} = \frac{\frac{mv^{2}}{r}}{mg}

tan\theta= \frac{v^{2}}{rg}

tan\theta= \frac{(2)^{2}}{(0.25)(9.8)}

tan\theta = 1.63

\theta = 58.5 deg

6 0
3 years ago
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