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ValentinkaMS [17]
3 years ago
15

Does anyone know what the answers are?

Physics
1 answer:
baherus [9]3 years ago
4 0

Answer:

Option (C) is the answer

Explanation:

may be it is possible if that we stand so far

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When you compare the prices of two different pairs of shoes, money is a _____.
Vladimir [108]

unit of account is the answer

3 0
3 years ago
Read 2 more answers
A 300 g bird is flying along at 6.0 m/s and sees a 10 g insect heading straight towards it with a speed of 30 m/s. The bird open
Gelneren [198K]

Answer:

(a): The bird speed after swallowing the insect is V= 4.83 m/s

(b): The impulse on the bird is I= 0.3 kg m/s

(c): The force between the bird and the insect is F= 20 N

Explanation:

ma= 0.3 kg

va= 6 m/s

mb= 0.01kg

vb= 30 m/s

(ma*va - mb*vb) / (ma+mb) = V

V= 4.83 m/s (a)

I= mb * vb

I= 0.3 kg m/s  (b)

F*t= I

F= I/t

F= 20 N (c)

5 0
3 years ago
n a car lift used in a service station, compressed air exerts a force on a small piston that has a circular cross section of rad
Oksi-84 [34.3K]

Answer: 1477.78 N

Explanation:

Let's assume that the cross sectional area of the smaller piston be A1

let's also assume the cross sectional area of the larger piston be A2

We assume the force applied to the smaller piston be F1

We also assume the force applied to the larger piston be F2

we then use the formula

F1/A1 = F2/A2

From our question,

The radius of the smaller piston is 5 cm = 0.05 m

The radius of the larger piston is 15 cm = 0.15 m

The force of the larger piston is 13300 N

The force of the smaller piston is unknown = F

A1 = πr² = 3.142 * 0.05² = 0.007855 m²

A2 = πr² = 3.142 * 0.15² = 0.070695 m²

F1/0.007855 = 13300/0.070695

F1 = (13300 * 0.007855) / 0.070695

F1 = 104.4715 / 0.070695

F1 = 1477.78 N

Thus, the force the compressed air must exert is 1477.78 N

5 0
3 years ago
A 2.0kg object is raised by a height of 0.5m.Calculate the energy raised in its gravitational potential energy store? G=9.8N/KG
notka56 [123]

Answer:

Gravitational potential energy stored is 9.8 J.

Given:

G = 9.8 \frac{N}{kg}

height = 0.5 m

mass = 2 kg

To find:

Gravitation Potential energy stored = ?

Formula used:

Potential energy = mGh

m = mass

G = acceleration due to gravity

h = height

Solution:

Potential energy of the object is given by,

Potential energy = mGh

m = mass

G = acceleration due to gravity

h = height

Potential energy = 2 × 9.8 × 0.5

Potential energy = 9.8 Joule

Gravitational potential energy stored is 9.8 J.

5 0
3 years ago
You're in a car that gets 37 miles per gallon of gas, driving it at a constant speed. If you took the gas from the car tank, and
Sergeu [11.5K]

Answer:

Required diameter of hose pipe = 0.2864 mm

Solution:

From the continuity eqn, the fluid flow rate is given by:

Av = \frac{V}{t}

where

A = cross-sectional area = \pi r^{2}

r = hose pipe radius

v = velocity of gas

Also, v = \frac{displacement, d}{time, t}

Using:

1 gallon = 3.854 l

1 mile = 1609.34 m

1 m^{3} = 1000 l

Therefore,

A\frac{d}{t} = \frac{V}{t}

\pi r^{2} = \frac{V}{d}

\pi r^{2} = \frac{(1 gal).(\frac{3.7854 l}{gal}).(\frac{10^{- 3} m^{3}}{l})}{37 miles(\frac{1609.34 m}{miles})}

6.357\times 10^{- 8} = \pi r^{2}

r^{2} = 2.024\times 10^{- 8}

r = 1.423\times 10^{- 4} m = 0.1423 mm

The diameter of the hose pipe = 2r = 2\times 1.423\times 10^{- 4}

The diameter of the hose pipe = 2.846\times 10^{- 4} m = 0.2846 mm

4 0
3 years ago
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