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lilavasa [31]
3 years ago
5

A bar sits on top of a brown triangle with a black weight at the left end and a finger pushing on the bar at the right end. Dott

ed lines run above and parallel with the bar and vertically from the above dotted line to the center of the weight, the point where the triangle meets the bar, and the finger. The distance from the center of the weight to the point of the triangle is labeled 2 meters. The distance from the point of the triangle to the finger is labeled 5 meters.
For the lever shown, a = 5 m and b = 2 m. What is the mechanical advantage of the lever? ill give 14 points if youll be my boo if your a girl

Physics
2 answers:
yuradex [85]3 years ago
8 0

Answer:

5/2=2.5

Explanation:

effort/resistance=ma

Leno4ka [110]3 years ago
4 0
2.5 pfffttttt u cheeessyyyy boiiii
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El tubo de entrada que suministra presión de aire para operar un gato hidráulico tiene 2 cm de diámetro. El pistón de salida es
topjm [15]

Answer:

P₁ = 219.3 Pa

Explanation:

This fluid mechanics problem, we can use that the pressure is distributed with the same value throughout the system, which is Pascal's principle.

Let's use the subinidce1 for the small diameter and the subscript 2 for the larger diameter.

              P₁ = P₂

pressure is defined by

             P = F / A

we subtitute

             F₁ / A₁ = F₂ / A₂

             F₁ = F₂ A₁ / A₂

the area in a circle is

             A = π r² = π d² / 4

we substitute

            F₁ = F₂ (d₁ / d₂)²

we calculate

           F₁ = 17640 (2/32)²

           F₁ = 68.9 N

Having the force to be applied we can find the air pressure on the small plunger

          P₁ = F₁ / A₁

          P₁ = F₁ 4 / π d₁²

let's calculate

          P₁ = 68.9 4 / (π 0.02²)

          P₁ = 219.3 Pa

3 0
3 years ago
In a collision between an electron and a hydrogen atom, it is useful to select both objects as the system because which of these
lukranit [14]

Answer:

Explanation:

Because of the following ,it is useful to select both objects as the system during  collision between an electron and a hydrogen atom

1. The total momentum of the system does not change during the collision.

2.The forces the objects exert on each other are internal to the system and don't change the total momentum of the system.

3. During the time interval just before to just after the collision, external forces are negligible.

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What is the mass in grams of 5.50 × 1014 lead (pb) atoms?
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A 15-kg bicycle carrying a 50-kg boy is traveling at a speed of 5 m/s. What is the KE of the bicycle and the boy?
vovangra [49]
Together as one moving package, their mass is (15 + 50) = 65 kg.

       Kinetic energy = (1/2) (mass) (speed)²

                               = (1/2) (65 kg) (5 m/s)²

                               =  (32.5 kg) (25 m²/s²)

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4 0
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