1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
antoniya [11.8K]
3 years ago
12

I need the evaluation

Physics
1 answer:
GalinKa [24]3 years ago
3 0

Answer:

The maximum torque exerted by the person is, τ = 89.96 kg m² s⁻²

Explanation:

Given data,

The mass of the person riding a bike, m = 54 kg

The radius of rotation of the pedal, r = 17 cm

                                                       = 0.17 m

The torque exerted by the person is given by the formula,

                           τ = F r Sin θ

Where,

                          θ is the angle between F and R

The maximum torque exerted by the person is at θ = 90°

Therefore,

                            τ = F r

                                = m x g x r

                                = 54 x 9.8 x 0.17

                                = 89.96 kg m² s⁻²

Hence, the maximum torque exerted by the person is, τ = 89.96 kg m² s⁻²

You might be interested in
Four pairs of objects have the masses as described below, along with the distances between
lord [1]

Answer:

<h2>Mass of 1 Kg and 2 Kg, 1 meters apart.</h2>

Explanation:

The gravitational force is defined as

F=G\frac{m_{1} m_{2} }{r^{2} }

By definition, the gravitational force depends directly on the product of the masses and indirectly on the distance between the masses, which means the further they are, the less gravitational force would be. And, the greater the masses, the greater the gravitational force.

Among the options, the pair that would have the greatest gravitational force is  Mass of 1 Kg and 2 Kg, with 1 meter between them.

Notice that the last choice includes the same masses but with a greater distance between them, that means it would be a weaker graviational force.

Therefore, the right answer is the second choice.

7 0
3 years ago
Which of Kepler's laws helps you compare the velocities of different planets?
Rasek [7]

see this and you

try to understand

5 0
3 years ago
22. Explain why it is better to increase the biodiversity of ecosystem.
Marizza181 [45]

Answer: because increasing biodiversity can influence ecosystem functions such as productivity and variety and even the likelihood that a particular species is discovered by a comminity

Explanation:

7 0
3 years ago
A roller of radius 12.5 cm turns at 14 revolutions per second. What is the linear velocity of the roller in meters per second?
Firdavs [7]

12.5 times 14 and convert to meters its 1.75 meters per second

7 0
3 years ago
Read 2 more answers
A particle executes simple harmonic motion with an amplitude of 1.69 cm. At what positive displacement from the midpoint of its
m_a_m_a [10]

Answer: 0.0146m

Explanation: The formula that defines the velocity of a simple harmonic motion is given as

v = ω√A² - x²

Where v = linear velocity, A = amplitude = 1.69cm = 0.0169m, x = displacement.

The maximum speed of a simple harmonic motion is derived when x = A, hence v = ωA

One half of maximum speed = speed of motion

3ωA/2 = ω√A² - x²

ω cancels out on both sides of the equation, hence we have that

A/2 = √A² - x²

(0.0169)/2 = √(0.0169² - x²)

0.00845 = √(0.0169² - x²)

By squaring both sides, we have that

0.00845² = 0.0169² - x²

x² = 0.0169² - 0.00845²

x² = 0.0002142

x = √0.0002142

x = 0.0146m

5 0
3 years ago
Other questions:
  • Across a horizontal distance of 25 feet, a roller coaster has a steep drop. The height of the roller coaster at the bottom of th
    10·2 answers
  • When a cup is placed on a table, which force prevents the cup from falling to the ground? A. gravitational force B. normal force
    8·2 answers
  • Do you think an observer on another planet in the solar system might see eclipses
    13·1 answer
  • An elevator ascends at a constant speed of 4 m/s, how much time is required for the elevator in order to travel 120 m upwards?
    13·1 answer
  • When an object is thrown upwards and reaches its maximum height its speed is: a. Greater than the initial
    11·1 answer
  • A student sees a newspaper ad for an apartment that has 1330 square feet (ft^2) or floor space. How many square meters of area a
    6·1 answer
  • Kepler’s first law states that:
    7·1 answer
  • What would be a disadvantage of asexual reproduction for an organism
    15·1 answer
  • What does fitness means to you
    11·2 answers
  • In motion pictures, what do you call the lens manipulation where the focus quickly changes from one subject to the next in a mot
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!