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lesantik [10]
3 years ago
14

Work output of a large machine in a factory is 89,000 joules, and it’s input is 102,000 joules. Work output of a similar machine

is 92,000 joules, and it’s work input is 104,000 joules. Which machine has a greater efficiency
Physics
2 answers:
mojhsa [17]3 years ago
7 0
(89000/102000)×100
=87.25%

(92000/104000)×100
=88.46%

efficiency is (output/input)×100
if u get confused which way input and output should go, remember the smaller value is always output and it's above in the fraction, then only it's possible to get a efficiency lower than 100.

kotegsom [21]3 years ago
3 0

Answer:

The machine with work input of 104,000Joules and work output of 92,000 has the greater efficiency

Explanation:

Efficiency of a machine is the ratio of work done by a machine(work output) to work put in the machine (work input).

Mathematically,

Efficiency = Work output/Work Input ×100

For the machine with work output of 89,000Joules and work input of 102,000Joules, its efficiency will be;

Efficiency = 89,000/102,000×100

Efficiency = 87.5%

Similarly for the other machine with work output of 92,000Joules and work input of 104,000Joules, its efficiency will be;

Efficiency = 92,000/104,000×100

Efficiency = 88.5%

Comparing the efficiency of both machines, the machine with efficiency of 88.5% has greater efficiency.

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lesya [120]

Answer:

d_{2}=0.585m

Explanation:

The torque is the force by the distance so to determinate that both torque are the same magnitude so

T_{1}-T_{2}=0

T_{1}=T_{2}

F_{1}*d_{1}=F_{2}*d_{2}

43N*0.30m=21N*d_{2}

Solve to d2

d_{2}=\frac{41N*0.30m}{21N}

d_{2}=0.585m

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you throw a rock with a horizontal velocity at 36.6 m/s out a window that is 29.5 m above the ground. What was it’s total time i
ANEK [815]
29.5-4.9x^2= your answer
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El concepto cosmológico abarca todo lo relativo a la cosmología y, al unir este término con la metafísica sería posible una corr
Solnce55 [7]

La respuesta correcta para esta pregunta abierta es la siguiente.

No incluyes opciones, incisos, o alguna referencia específica para responder esta pregunta.

De ahí que responderemos en términos generales basándonos en nuestro conocimiento previo.

El concepto cosmológico abarca todo lo relativo a la cosmología y, al unir este término con la metafísica sería posible una correcta asociación la cual sería benéfica para ambos campos de conocimiento porque de esta manera se estarían complementando y enriqueciendo el uno al otro.

Cuando la ciencia -en este caso, la cosmología- acepte los conceptos metafísico que no tienen un sustento científico pero que sí contemplan alternativas en el mundo espiritual que son aceptadas por una innumerable cantidad de personas, entonces los expertos podrán plantear nuevas y diferentes posibilidades de entender los fenómenos que al día de hoy, carecen de una convincente explicación.

Tanto la cosmología como la metafísica podrían mostrarse más receptivos a las aportaciones de una y la otra, con objeto de poder aumentar las posibilidades de comprender un fenómeno. No necesariamente debe haber una teoría científica para poder avanzar en el conocimiento de algún tema. De ahí que las aportaciones metafísicas sean válidas como una alternativa de investigación.

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2 years ago
Hydrogen is the second most abundant gas in the atmosphere? True or false?
Alenkinab [10]
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7 0
3 years ago
A projectile has an initial horizontal velocity of 15 meters per second and an initial vertical velocity of 25 meters per second
Artyom0805 [142]

Answer:

75 m

Explanation:

The horizontal motion of the projectile is a uniform motion with constant speed, since there are no forces acting along the horizontal direction (if we neglect air resistance), so the horizontal acceleration is zero.

The horizontal component of the velocity of the projectile is

v_x = 15 m/s

and it is constant during the motion;

the total time of flight is

t = 5 s

Therefore, we can apply the formula of the uniform motion to find the horizontal displacement of the projectile:

d= v_x t =(15 m/s)(5 s)=75 m

5 0
3 years ago
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