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2 years ago

PLZZZ HELP!!! 80PTS!!!

Physics

1 answer:

vodka [1.7K]2 years ago

4 0

Answer:

Impulse = $206.28 * 10 = 2062.8$ g.m/s

Explanation:

Impulse is equal to the product of force and time

Here

Density of car = $0.54$ g/mL

Volume of car $= 38.2$ mL

Mass of the car is equal to the product of density and volume of car

Mass of the car $= 0.54 * 38.2$ $= 20.628$ grams

Acceleration of the car is $10$ m/s^2

Force is equal to product of mass and acceleration

F = $20.628 * 10 = 206.28$ g .m/s^2

Impulse = F * t

Impulse = $206.28 * 10 = 2062.8$ g.m/s

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Read 2 more answers

The weight of a hydraulic barber's chair with a client is 2100 N. When the barber steps on the input piston with a force of 44 N

guajiro [1.7K]

Answer:

$\frac{r_1}{r_2}=6.9$

Explanation:

According to Pascal's Law, the pressure transmitted from input pedal to the output plunger must be same:

$P_1 = P_2\\\\\frac{F_1}{A_1}=\frac{F_2}{A_2}\\\\\frac{F_1}{F_2}=\frac{A_1}{A_2}\\\\\frac{F_1}{F_2}=\frac{\pi r_1^2}{\pi r_2^2}\\\\\frac{F_1}{F_2}=\frac{r_1^2}{r_2^2}$

where,

F₁ = Load lifted by output plunger = 2100 N

F₂ = Force applied on input piston = 44 N

r₁ = radius of output plunger

r₂ = radius of input piston

Therefore,

$\frac{r_1^2}{r_2^2}=\frac{2100\ N}{44\ N}\\\\\frac{r_1}{r_2}=\sqrt{\frac{2100\ N}{44\ N}} \\\\\frac{r_1}{r_2}=6.9$

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