3 years ago

The downward pull of an object due to gravity is the objects _______?

Physics

2 answers:

elena-s [515]3 years ago

8 0

The downward pull of an object due to gravity is the object’s weight.

Anuta_ua [19.1K]3 years ago

6 0

Its weight

weight is the measurement of the pull of gravity on an object

the greater the pull the more it weighs

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An airplane has an effective wing surface area of 19.4 m2 that is generating the lift force. In level flight the air speed over

alexgriva [62]

Answer:

W =23807.68 N

Explanation:

given,

surface area of wing = 19.4 m²

speed over top wing = 67 m/s

speed under wing = 51 m/s

density of air = 1.3 kg/m³

weight of plane

From Bernoulli's principle

$P_1 + \dfrac{1}{2}\rho v_1^2 = P_2 + \dfrac{1}{2}\rho_2^2$

where 1 and 2 are two different locations at the same geo potential level

so if we call 1 the lower surface and 2 the upper surface,

we find the pressure differential, P₁ -P₂

$\Delta P =\dfrac{1}{2}\rho (v_2^2-v_1^2)$

$\Delta P =\dfrac{1}{2}\times 1.3 \times (67^2-51^2)$

$\Delta P =1227.2\ N/m^2$

then the force acting on the plane is

F=P A

F=1227.2 x 19.4

F =23807.68 N

weight of the plane

W =23807.68 N

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3 years ago

1200kg car speeds up from 2 m/s to 6 m/s. How many times greater is the car's kinetic

Bezzdna [24]

Answer:

9 times as great

Explanation:

KE = 1/2mv²

1/2(1200)(2)² = 2,400 J
1/2(1200)(6)² = 21,600 J

21,600 / 2,400 = 9

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Decribe an experiment to show that pressure increase with decrease in the area of surface

topjm [15]

Answer:

for example the studs are made in football player boot because to increase pressure with descrease in area of surface

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Every atom with 15 protons in its nucleus
is an atom of Phosphorus.

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Tpy6a [65]

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It is called photosynthesis.

Explanation:

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