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2 years ago

When is the pressure of the man on the ground more – lying position or standing position? Explain.

Physics

1 answer:

Dmitrij [34]2 years ago

3 0

It is without a doubt in standing position!
“I will explain if u ask”
(Please mark brainlest if I helped u a bit)

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Which of the following takes place in the combustion chamber of a gas turbine engine?A. A glow plug is used to add enough heat t

erica [24]

Answer:

Fuel oil is mixed with a proper portion of compressed air

Explanation:

A gas turbine has three main part, which are

combustion chamber
air compressor
power turbine

The combustion chamber is responsible for mixing fuel with a proper portion of compressed air.

The air compressor supplies air in sufficient quantity to satisfy the requirements of the combustion chamber

The power turbine produces the power to drive the air compressor.

6 0

3 years ago

A wire of radius 5 x 10⁻⁴ m is needed to prepare a coil of resistance 40 Ω. The resistivity of the material of the wire is 3.14x

SIZIF [17.4K]

Answer:

100 m

Explanation:

From the question,

R = Lρ/A.................... Equation 1

Where R = resistance of the wire, L = length of the wire, ρ = resistivity of the wire, A = cross sectional area of the wire.

But,

A = πr².................... Equation 2

Where r = radius of the wire.

Substitute equation 2 into equation 1

R = Lρ/πr²

Make L the subject of the equation

L = Rπr²/ρ...................... Equation 3

Given: R = 40 Ω, r = 5×10⁻⁴ m, ρ = 3.14×10⁻⁷ Ωm

Constant: π = 3.14

Substitute these values into equation 3

L = [40×3.14×( 5×10⁻⁴)²]/ (3.14×10⁻⁷)

L = 40×3.14×25×10⁻⁸/(3.14×10⁻⁷)

L = 100 m

Hence the length of the wire is 100 m

4 0

2 years ago

The graph in the figure shows the position of a particle as it travels along the x-axis. What is the magnitude of the instantane

alexandr402 [8]

Answer:

pls first attach the fig.

6 0

3 years ago

Justin is standing in the tee box and swings the golf club. As he swings, the end of the golf club gains speed and _____________

Marysya12 [62]

Potential energy is gained here as he swings.

3 0

2 years ago

Read 2 more answers

A 34.9-kg child starting from rest slides down a water slide with a vertical height of 16.0 m. (Neglect friction.)

aalyn [17]

Answer:

a) 12.528 m/s

b) 15.344 m/s

Explanation:

Given:

Mass of the child, m = 34.9 kg

Height of the water slide, h = 16.0 m

Now,

a) By the conservation of energy,

loss in potential energy = gain in kinetic energy

mgh = $\frac{\textup{1}}{\textup{2}}\textup{m}\times\textup{v}^2$

where,

g is the acceleration due to the gravity

v is the velocity of the child

thus,

at halfway down, h = $\frac{\textup{16}}{\textup{2}}$ = 8 m

therefore,

34.9 × 9.81 × 8 = $\frac{\textup{1}}{\textup{2}}\textup{34.9}\times\textup{v}^2$

v = 12.528 m/s

at three-fourth way down

height = $\frac{\textup{3}}{\textup{4}}\times16$ = 12 m

thus,

loss in potential energy = gain in kinetic energy

34.9 × 9.81 × 12 = $\frac{\textup{1}}{\textup{2}}\textup{34.9}\times\textup{v}^2$

v = 15.344 m/s

5 0

3 years ago

Read 2 more answers