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3 years ago

What does mechanical advantage describe regarding simple machines?

Physics

2 answers:

raketka [301]3 years ago

8 0

Answer:

they are manufactured

miss Akunina [59]3 years ago

8 0

Answer:

They multiply the input force.

Explanation:

Mechanical Advantage is the multiplication of the input force to give an increased output by a <em>simple machine </em>due to the difference in the length of load arm and the effort arm.

It is based upon the law of conservation of moments as to force applied at the farther point from a hinge or a pivot needs to be balanced by a greater force counteracting at a shorter distance from the pivot.

<u>Lever is a simple machine which consists of a bar pivoted or supported at a point (called fulcrum) about which it can rotate.</u>

$MA=\frac{F_L}{F_E}= \frac{E}{L}$ ..............................................(1)

where:

$F_E=$ force applied on the end of effort arm

$F_L=$ force due to load on the end of load arm

L = length of load arm

E = length of effort arm

Equation (1) is known as the law of levers, it was proven by <em>Archimedes </em>using geometric reasoning.

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X-Rays contradict to?<br> a)beta b) alpha.<br> C) gamma

Vesna [10]

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a type of penetrating electromagnetic radiation produced by the radioactive disintegration of atomic nuclei

3 0

3 years ago

Read 2 more answers

A constant-volume perfect gas thermometer indicates a pressure of 6.69 kPa at the triple point temperature of water (273.16 K).

mina [271]

Answer:

(a) ΔP=0.0245 kPa

(b) P=9.14 kPa

(c)ΔP=0.0245 kPa

Explanation:

(a) As it is perfect gas we can use

(P₁V₁)/T₁=(P₂V₂)/T₂

Since this constant volume so

P₁/T₁=P₂/T₂

T₂ is change in temperature

T₂=1.00+273.16

T₂=274.16 K

$P_{2}=(\frac{6.69}{273.16} )*274.16\\P_{2}=6.71449 kPa$

ΔP=6.71449-6.69

ΔP=0.0245 kPa

(b) As

$P_{2}=(\frac{6.69}{273.16} )*373.16\\P_{2}=9.14 kPa$

(c) Same steps as in part (a)

$P_{2}=(\frac{9.14}{373.16} )*374.16\\P_{2}=9.164kPa$

ΔP=9.164-9.14

ΔP=0.0245kPa

8 0

3 years ago

ly charged particles are held 24 x 103m apart and then released from rest. The initial acceleration of the first particle is obs

inessss [21]

Answer:

Part a)

$m_2 = 4.9 \times 10^7 kg$

Part b)

$q_1 = q_2 = 5312.6 C$

Explanation:

Part a)

As we know that both charge particles will exert equal and opposite force on each other

so here the force on both the charges will be equal in magnitude

so we will have

$F = m_1a_1 = m_2a_2$

here we have

$6.3 \times 10^7(7) = m_2(9)$

now we have

$m_2 = 4.9 \times 10^7 kg$

Part b)

Now for the force between two charges we can say

$F = \frac{kq_1q_2}{r^2}$

now we have

$(6.3 \times 10^7)(7) = \frac{(9\times 10^9)q^2}{(24\times 10^3)^2}$

now we have

$q_1 = q_2 = 5312.6 C$

3 0

3 years ago

Convert 30.0 degrees Celsius into Fahrenheit

scoray [572]

The answer is 86 degrees Fahrenheit. Formula is (30 x 9.5) + 32 = 86

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2 years ago

What happens to Earth’s plates during an earthquake?

vazorg [7]

A) Claim 1: Plates move, which can cause earthquakes.

Explanation:

The Plate Tectonic Theory proves the claim of plate move, causing earthquakes.

This theory states that the earth’s crust along with the uppermost mantle is formed of several thin but large surfaced rigid patch work of plate-like structures called tectonic plates.

There are about 15 large slabs on the earth’s outer surface and constitutes the lithosphere. Lithosphere of the earth is represented by the oceanic and continental crust layer and the uppermost mantle layer.

These plates move or slide relative with each other. These plates form divergent, convergent, or transform boundaries. Slips or faults along these boundaries forms subduction zones leading to great stress. This prevents normal gliding motion resulting in earthquakes.

4 0

3 years ago