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Ostrovityanka [42]
4 years ago
5

Two workers are sliding 340 kg crate across the floor. One worker pushes forward on the crate with a force of 430 N while the ot

her pulls in the same direction with a force of 270 N using a rope connected to the crate. Both forces are horizontal, and the crate slides with a constant speed. What is the crate's coefficient of kinetic friction on the floor?

Physics
1 answer:
Firdavs [7]4 years ago
6 0

Answer:

See it in the pic.

Explanation:

See it in the pic.

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When a hammer thrower releases her ball, she is aiming to maximize the distance from the starting ring. Assume she releases the
Taya2010 [7]

Answer:

The angular velocity is 15.37 rad/s

Solution:

As per the question:

\theta = 54.6^{\circ}

Horizontal distance, x = 30.1 m

Distance of the ball from the rotation axis is its radius, R = 1.15 m

Now,

To calculate the angular velocity:

Linear velocity, v = \sqrt{\frac{gx}{sin2\theta}}

v = \sqrt{\frac{9.8\times 30.1}{sin2\times 54.6}}

v = \sqrt{\frac{9.8\times 30.1}{sin2\times 54.6}}

v = \sqrt{\frac{294.98}{sin109.2^{\circ}}} = 17.67\ m/s

Now,

The angular velocity can be calculated as:

v = \omega R

Thus

\omega = \frac{v}{R} = \frac{17.67}{1.15} = 15.37\ rad/s

8 0
3 years ago
uranus is much smaller and less massive than jupiter. uranus rotates on its side, giving it extreme seasons. this may have been
Tresset [83]

The correct statements from the following list about how Uranus is different from Jupiter, and how its rings and moons formed and evolved includes the following:

  • Uranus is much smaller and less massive than Jupiter.
  • Uranus's appearance is nearly featureless; very bland.
  • Uranus has some large moons and rings.
  • Uranus rotates on its side, giving it extreme seasons. This may have been caused by an impact.

Describe Uranus?

Uranus is described as the seventh planet from the Sun. The name Uranus  is a reference to the Greek god of the sky, Uranus, who, according to Greek mythology, was the great-grandfather of Ares, grandfather of Zeus and father of Cronus.

Some known facts about Uranus includes the following:

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Learn more about Uranus at: brainly.com/question/13770002

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7 0
1 year ago
What are the potential hazards associated with using soil
allochka39001 [22]
Soil contains vermiculite, a natural mineral.Even though Vermiculite holds water, it can be dangerous for the human body. It's filled with naturally occurring asbestos, and when asbestos is breathed in, it can risk our respiratory system. In addition, soil has a potentially serious disease causes from bacteria called Legionnaires' Disease. It's very dangerous, especially for the people with a weak immune system.
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8 0
3 years ago
6. What is the wavelength of a wave that is traveling at 30 m/s and has a frequency of 3.2 Hz?
lidiya [134]

Answer:

6. 9.4 m

7. 1050 m/s.

Explanation:

6. Determination of the wavelength

Velocity (v) = 30 m/s

Frequency (f) = 3.2 Hz

Wavelength (λ) =?

v = λf

30 = λ × 3.2

Divide both side by 3.2

λ = 30 / 3.2

λ = 9.4 m

Thus, the wavelength of the wave is 9.4 m.

7. Determination of the speed of the wave.

Wavelength (λ) = 350 m

Frequency (f) = 3 Hz

Velocity (v) =.?

v = λf

v = 350 × 3

v = 1050 m/s

Thus, the speed of the wave is 1050 m/s

6 0
3 years ago
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