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
Mrac [35]
3 years ago
15

Astronauts in the International Space Station must work out every day to counteract the effects of weightlessness. Researchers h

ave investigated if riding a stationary bicycle while experiencing artificial gravity from a rotating platform gives any additional cardiovascular benefit. What frequency of rotation, in rpm, is required to give an acceleration of 1.4g to an astronaut's feet, if her feet are 1.1m from the platform's rotational axis?
Physics
1 answer:
Snowcat [4.5K]3 years ago
5 0

Answer:

  33.725 rpm

Explanation:

The relationship between rotational speed in radians per second and acceleration is ...

  \omega=\sqrt{\dfrac{a}{r}}

We want the rotation rate in RPM, so we need the conversion ...

  \text{RPM}=\dfrac{\text{rad}}{\text{s}}\cdot\dfrac{1\,\text{rev}}{2\pi\,\text{rad}}\cdot\dfrac{60\,\text{s}}{1\,\text{min}}

Then the required rotational speed in RPM is ...

  RPM=\sqrt{\dfrac{a}{r}}\cdot\dfrac{30}{\pi}=\dfrac{30}{\pi}\sqrt{\dfrac{1.4\cdot 9.8}{1.1}}\approx 33.725

The rotation rate needs to be about 33.7 rpm to give an acceleration of 1.4g at the astronaut's feet.

You might be interested in
A student is preparing to take a bath when she realizes the hot water tap in
Annette [7]

Answer:

one

Explanation:

6 0
3 years ago
An oscillator makes 322.1 oscillations in 4.255 minutes. What is the period of the oscillator?
sergij07 [2.7K]
Ummm I’m not sure let me do the work
4 0
3 years ago
How much electrical potential energy is stored in a capacitor that has 8.0 × 10-10 C of charge on each plate and a potential dif
arsen [322]
THere is a standard relationship that gives this result where the capacity of the capacitor is used:
E=1/2* \frac{Q^2}{C}.
We know though that Q/c=V and thus we can use the relationship:
E=Q*V/2 where we have just substituted in. If we also take into account that Q=VC, we can also get that E=V^2*C/2.
We are given the charge and the potential, so the best expression to use is the middle one.
Substituting, we get that E=1/2*8*10^(-10)*20=8*10^(-9).

The answer is B
8 0
3 years ago
If you carry out an experiment measuring the weight and mass of objects in one particular location on the earth, what relation w
Elina [12.6K]
The answer is letter C.

Weight (on Earth) is the force due to the mass of Earth attracting whatever mass is subject of discussion.

The force of attraction between any two masses is called Newton's Law of Universal Gravitation:

G \frac{m_1m_2}{d^2}

G is simply a given constant.

If we're at the surface of Eath, m_1 refers to the mass of the Earth, m_2 to the mass of whatever is on the surface of Earth, and d to the radius of Earth. 

Normally, we define a constant g to be equal to G \frac{M}{r^2}; in which M is the mass of Earth and r the radius of earth; g happens to be around 9.8.

By that, we adapt the Law of Universal Gravitation to objects on the surface of Earth, we call that force Weight.

W=mg

As you can see, weight is directly proportional to mass, more mass implies more weight.
8 0
4 years ago
PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!!
Ne4ueva [31]

My teacher taught me that besides the type of wave, wavelength doesn't change unless you shorten the wave, and she used string as an example. Making the string shorter causes the wavelength to decrease so it can't be B. Your answer is A

8 0
4 years ago
Read 2 more answers
Other questions:
  • Two balls are on a frictionless horizontal tabletop. Ball x initially moves at 10 meters per second, as shown in Figure 1 above.
    8·1 answer
  • Technician A says that fractured rods have a unique mating surface and that only the cap that was fractured is the one that will
    13·1 answer
  • A tugboat tows a ship with a constant force of magnitude F1. The increase in the ship's speed during a 10 s interval is 5.0 km/h
    9·1 answer
  • A cork is floating in salty water. As more salt is added to the water to increase its density, the cork will
    15·2 answers
  • Help asap will mark brainliest
    7·1 answer
  • Determine the vertex form of g(x) = x2 + 2x - 1. Which graph represents g(x)?<br> 5) Intro
    9·1 answer
  • The temperature of a chemical reaction ranges between 40 degrees Celsius and 180 degrees Celsius. The temperature is at its lowe
    15·1 answer
  • How can you tell if high frequency noise is present in your sound signal without playing it back?
    14·1 answer
  • Un dulap are laturile de jos egale cu 60cm si1,1m,iar masa lui este de 25kg.Ce presiune exercita dulapul asupra podelei? URGENT!
    9·1 answer
  • How far has a ball traveled after 3.6 seconds when thrown downward at a<br> velocity 3.75 m/s?
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!