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professor190 [17]
4 years ago
12

A 2-HP winch is used to raise loads of bricks up a 30 meter building. If the bricks need to get to the top of the building in 2

minutes, what is the maximum allowable mass of a load of bricks?
Physics
1 answer:
Kamila [148]4 years ago
3 0

Answer:

600 kg

Explanation:

First, convert horse power to SI units.

2 HP × (745.7 W / 1 HP) = 1491.4 W

Power = work / time

Power = force × distance / time

1491.4 W = m × (9.8 m/s²) × (30 m) / (120 s)

m = 609 kg

Rounding to one significant figure, the maximum allowable mass is 600 kg.

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What is science?
vesna_86 [32]

Answer:

<h2>I don't know the answer but I have explanation </h2>

Explanation:

<h3>Science is further treated in a number of articles. For the history of Western and Eastern science, see science, history of. For the conceptualization of science and its interrelationships with culture, see science, philosophy of. For the basic aspects of the scientific approach, see physical science, principles of; and scientific method.Science can be divided into different branches based on the subject of study. The physical sciences study the inorganic world and comprise the fields of astronomy, physics, chemistry, and the Earth sciences. The biological sciences such as biology and medicine study the organic world of life and its processes. Social sciences like anthropology and economics study the social and cultural aspects of human behaviour.Science, any system of knowledge that is concerned with the physical world and its phenomena and that entails unbiased observations and systematic experimentation. In general, a science involves a pursuit of knowledge covering general truths or the operations of fundamental laws.</h3>

4 0
3 years ago
Read 2 more answers
Why are the lunar mountains smoothly rounded rather than having sharp, pointed peaks (as they were almost always depicted in sci
omeli [17]

Answer:

Explained

Explanation:

Lunar mountains are smoothly rounded rather than having sharp, pointed peaks because the lunar moons are formed because of the impact of asteroids and comets on its surface whereas the Earth mountains are formed because of the surface activity of volcanos, collision of land masses and activity of plate tectonics that is why they have sharp and pointed tops.

6 0
3 years ago
If a melon has a a mass of 1 kg, how much does the melon weigh?
lesya [120]

Answer:

A. 10 N

Explanation:

weight of melon is 1×10=10N..........

6 0
3 years ago
You illuminate a slit with a width of 71.7 μm with a light of wavelength 737 nm and observe the resulting diffraction pattern on
miskamm [114]

To solve this problem we will apply the concepts related to the double slit-experiment. Under this concept we understand the relationship between the minimum angle, depending on the order of the fringes, the wavelength and the distance between slits. Therefore we have the following relation,

sin(\theta_{min}) = \frac{m\lambda}{D}

Here,

m = Order of the fringes

D = Distance between slits

\lambda = Wavelength

Replacing with our values we have,

sin(\theta_{min}) = \frac{(1)(737*10^{-9})}{71.7*10^{-6}m}

sin(\theta_{min}) = 0.01028

Through the relationship between distances then we have that the basic amplification distance is given by the relationship between the distance of the slit L and the angle, then

Y=Lsin\theta

Y  =2.27*0.01028

Y =0.0233m

Thus the width of the central maximum is

W=2Y=2*0.0233

W = 0.0466m

Therefore the widht is 0.466m

6 0
4 years ago
Which of the following statements is true?
Tresset [83]

Answer:

option A

Explanation:

the correct answer is option A

when the air temperature increases the relative humidity decreases.

When temperature increase the ability to hold water vapor decreases.

higher the water vapor more will be the amount of moisture content.

it take less water vapor to saturate air in a city with low temperature compared with high air temperature.

8 0
4 years ago
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