How can you increase efficiency of a simple machine??

Physics

1 answer:

Blizzard [7]2 years ago

5 0

Answer:

Efficiency can be increase by using rollers in conjunction with the inclined plane. Wedge. The wedge is an adaptation of the inclined plane. It can be used to raise a heavy load over a short distance or to split a log.

Explanation:

Hope it helps

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A friend asks you how much pressure is in your car tires. You know that the tire manufacturer recommends 30 psi, but it's been a

sergiy2304 [10]

you have 28 psi in the tire

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3 years ago

Light in a vacuum travels at a constant speed of 3x10^8 m/s. If the moons average distance from the earth is 38776106 km how lon

Karo-lina-s [1.5K]

Answer: 258.3 s

Explanation:

The speed $s$ is given by the following equation:

$s=\frac{D}{t}$

Where:

$s=3(10)^{8} m/s$ is the speed of light in vacuum

$D=2(38776106 km \frac{1000 m}{1 km})=7.75(10)^{10} m$ is the double of the distance between Earth and Moon, since the beam of light travels from Earth to the Moon and back to Earth again.

$t$ is the time it takes to the beam of light to travel the mentioned distance

Isolating $t$ and solving with the given information:

$t=\frac{D}{s}$

$t=\frac{7.75(10)^{10} m}{3(10)^{8} m/s}$

Finally:

$t=258.3 s \approx 258 s$

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3 years ago

The thermosphere has _____ air pressure than the mesosphere. more less equal

sertanlavr [38]

I think the correct answer from the choices listed above is the second option. The thermosphere has less air pressure than the mesosphere because the farther away you are from the surface of the earth the lesser amount of gases present.

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2 years ago

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Using a 2.44kg sledge hammer, a railroad worker drives a 0.55kg spike into a railroad tie. The sledge hits the spike with a spee

Mazyrski [523]

Answer:

1547.6 J

Explanation:

From the law of conservation of energy, the sum of initial and final energy is the same. Energy can only be transformed into other forms but can't be created nor lost

Initial kinetic energy of the hammer system is given by

$KE_i=0.5mv^{2}$ where m is mass of the body and v is the velocity