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
Bingel [31]
3 years ago
11

ou are sparring in a tae kwon do class. Your opponent executes a roundhouse kick. The average angular velocity of his kicking le

g and foot is 20 rad/s. The angular displacement from his foot to your head is 5 rad. How much time do you have to move if you want to avoid being kicked in the head?
Physics
1 answer:
nordsb [41]3 years ago
6 0

Answer:

0.25 s

Explanation:

The angular velocity, <em>ω</em>, is related to the angular displacement, <em>θ</em>, by

\omega = \dfrac{\theta}{t}

<em>t</em> is the time.

Making <em>t</em> subject of the formula,

t = \dfrac{\theta}{\omega}

Substituting values in the question,

t = \dfrac{5}{20} = 0.25\text{ s}

You might be interested in
Digital thermometers often make use of thermistors, a type of resistor with resistance that varies with temperature more than st
Nezavi [6.7K]

Answer:

The temperature coefficient of resistivity for a linear thermistor is 1.38\times10^{-3}^{\circ}C^{-1}

Explanation:

Given that,

Initial temperature = 0.00°C

Resistance = 75.0 Ω

Final temperature = 525°C

Resistance = 275 Ω

We need to calculate the temperature coefficient of resistivity for a linear thermistor

Using formula for a linear thermistor

R=R_{0}(1+\alpha\Delta T)

R=R_{0}+R_{0}\alpha\Delta T

\alpha=\dfrac{R-R_{0}}{R_{0}\Delta T}

Put the value into the formula

\alpha=\dfrac{275-75}{275\times(525-0)}

\alpha=1.38\times10^{-3}^{\circ}C^{-1}

Hence, The temperature coefficient of resistivity for a linear thermistor is 1.38\times10^{-3}^{\circ}C^{-1}

4 0
3 years ago
Read 2 more answers
Autism spectrum disorder is marked by all but which of the following categories of symptoms?
s344n2d4d5 [400]
It’d be B: severe depressive symptoms
8 0
2 years ago
What would occur if there was a gain-of-function mutation in the promoter for the cyclin E gene such that cyclin E protein was a
rjkz [21]

Answer:

b) Cells will pass through the G1/S checkpoint even if conditions are not ideal for cell division.

Explanation:

In the given problem, if there exists a gain-of-function mutation for the given cell, there would not be the formation of cyclin E when there is the possibility of cells movement via the checkpoint of the G1/S, even when there are non-deal conditions for the division of cell. Thus, the correct option in the lists of options is the option b.

7 0
4 years ago
One of the foci for the moon's orbit would be the
suter [353]
The question is oversimplified, and pretty sloppy.

Relative to the Earth . . .
The Moon is in an elliptical orbit around us, with a period of
27.32... days, and with the Earth at one focus of the ellipse.

Relative to the Sun . . .
The Moon is in an elliptical orbit around the Sun, with a period
of 365.24... days, and with the Sun at one focus of the ellipse,
and the Moon itself makes little dimples or squiggles in its orbit
on account of the gravitational influence of the nearby Earth.

I'm sorry if that seems complicated.  You know that motion is
always relative to something, and the solar system is not simple.
5 0
3 years ago
Read 2 more answers
Sequence eye light enters the eye
Burka [1]

Answer:

Well it is the courtnes

Explanation:

8 0
3 years ago
Other questions:
  • A motorboat and a pwc are meeting head-on. which one is the stand-on vessel?
    11·1 answer
  • What is number 14 please tell me
    9·1 answer
  • An object has a mass of 120 kg on the moon. What is the force of gravity acting on the object on the moon?
    11·2 answers
  • Which of Newton's laws accounts for the following statement? "A force cannot act alone." first law second law third law
    7·2 answers
  • Discuss one theory that has been proposed about the creation of the universe provide at least one piece of evidence to support t
    5·1 answer
  • A hunter on a frozen, essentially frictionless pond uses a rifle that shoots 4.20 g bullets at 965 m/s. The mass of the hunter (
    5·1 answer
  • Are moons 1-4 waxing are waning ?
    12·1 answer
  • An 84% efficient single pulley is used to lift a 230 kg piano 3.5 m. How much work must be input?
    10·1 answer
  • Which two actions would weaken an electromagnet?
    9·2 answers
  • What is the name for a supporting force that acts upward and in a direction perpendicular to a surface
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!