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Klio2033 [76]
3 years ago
12

D.The rear wheels of tractors are wider.​

Physics
1 answer:
Soloha48 [4]3 years ago
7 0

Answer:

they are wider to enhance stability of the tractor

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From a lake, water is pumped at a rate of 67 L/s to a storage tank positioned 14 m above while consuming 16.4 kW of electrical p
LenaWriter [7]

Answer:

57 %

Explanation:

input power = 16.4 kW = 16.4 x 10^3 W = 16400 W

Water pumped per second = 67 L/s

Mass of water pumped per second, m = Volume of water pumped epr second x density of water

m = 67 x 10^-3 x 1000 = 67 kg/s

height raised, h = 14 m

Output Power = m x g x h / t = 67 x 10 x 14 = 9380 W

efficiency = output power / input power = 9380 / 16400 = 0.57

% efficiency = 57 %

thus, the efficiency of the pump is 57 %.

3 0
3 years ago
A resistor with R = 300 Ω and an inductor are connected in series across an ac source that has voltage amplitude 500 V. The rate
schepotkina [342]

Answer:

Explanation:

impedance z=(XL^2+R^2)^1/2

power across te resistor ==i^2r

286/300

I=.976

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3 years ago
4. Why do you think there needs to be a specific code of ethics for health-related information on the Internet?
alexandr1967 [171]
Medical information is private and some people don't want others to know personal information. that's why a code of ethics will protect their info
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3 years ago
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When an ideal diatomic gas is heated at constant
ira [324]

Answer:

Q=∆U+W

Explanation:

work done+ change in internal energy = heat supplied to change the internal energy

(1st law of thermodynamics)

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Why were phonograph records placed on the sides of the two voyager spacecraft launched in the 1970s?
LenaWriter [7]

Answer:

The reason for phonograph installation is to provide information about humans to interstellar aliens.

Explanation:

Phonographs are archaic forms of gramophone which are able to record and reproduce sound.Phonographs were used in early days in voyagers to help transmit information about humans to nearby alien species in space.

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