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meriva
3 years ago
5

This woman is riding a bicycle down a hill at a constant speed and in a straight line. Which change will increase the speed of t

he bicycle? O A. An added force of 20 N down the hill O B. Added forces of 30 N up the hill and 30 N down the hill O C. Added forces of 30 N up the hill and 20 N down the hill O D. An added force of 20 N to the side of the hill​
Physics
2 answers:
Taya2010 [7]3 years ago
7 0

Answer:

An added force of 20 N down the hill

Explanation:

It just makes sense, more force makes the bike go faster.

Marina86 [1]3 years ago
4 0

Answer: Um I would say maybe b

Explanation:

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3 years ago
En la figura los émbolos son de masa despreciable y están en reposo, como se ve en la figura, siendo M=300 kg. Determine: a) la
Leni [432]

The image mentioned is in the attachment

Answer: a) P = 2450 Pa;

b) P = 2940 Pa;

c) F = 4.9 N

Explanation:

a) Pressure is a force applied to a surface of an object or fluid per unit area.

The image shows a block applying pressure on the large side of the piston. The force applied is due to gravitation, so:

P = \frac{F}{A}

P = \frac{m.g}{A}

P = \frac{300.9.8}{1.2}

P = 2450 Pa

The pressure generated by the block is P = 2450 Pa.

b) A static liquid can also exert pressure and can be calculated as:

P_{staticfluid} =ρ.g.h

where

ρ is the density of the fluid

h is the depth of the fluid

g is acceleration of gravity

P_{staticfluid} = 600.9.8.0.5

P_{staticfluid} = 2940 Pa

The pressure in the fluid at 50 cm deep is P_{staticfluid} = 2940 Pa.

c) For the system to be in equilibrium both pressures, pressure on the left side and pressure on the right side, have to be the same:

P_{s} = P_{b}

\frac{F}{A_s} = \frac{F_b}{A_b}

F = \frac{F_b}{A_b}.A_s

Adjusting the units, A_{s} = 0.002 m².

F = \frac{300.9.8.0.002}{1.2}

F = 4.9 N

The force necessary to be equilibrium is F = 4.9 N.

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2 years ago
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True because it’s logical my boo
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2 years ago
Which of the following statements is accurate? A) Compressions and rarefactions occur throughout a transverse wave. B) The wavel
Nikitich [7]

Answer:

B) The wavelength of both transverse and longitudinal waves is measured parallel to the direction of the travel of the wave

5 0
3 years ago
Number one, it's probably a really easy question but it confused me
Dvinal [7]
Use your notes or look for the answer on your book
6 0
3 years ago
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