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Degger [83]
4 years ago
12

The blade on a typical table saw rotates at 3300 revolutions per minute. calculate the linear velocity in miles per hour of one

of the teeth at the edge of the 14 inch diameter blade.
Physics
2 answers:
yKpoI14uk [10]4 years ago
5 0
C=d(pi)=43.98in. Tip travels 3300 x C = 145,134in per min. (145,134in/min)(1ft/12in)(1 mile/5280ft)(60min/1 hr) = 137.4mph. 
marshall27 [118]4 years ago
3 0

Answer:

Linear speed of the blade is 136.81 mph

Explanation:

It is given that,

Angular speed of the blade of table saw, \omega=3300\ rev/min=345.57\ rad/s

Diameter of the blade, d = 14 inch = 0.3556 m

Radius of the blade, r = 0.177 m

We need to find the linear velocity of the blade. The relation between linear velocity and the angular speed is :

v=r\times \omega

v=0.177\times 345.57

v = 61.16 m/s

Since, 1 m/s = 2.23 mph

So, v = 136.81 mph

Therefore, the linear velocity of the blade is 136.81 mph.

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Intersystem crossing is:
Semenov [28]

An intersystem crossing (ISC) is a non-radiative process that involves the transition between two electronic states with different spin multiplicity. That is, when an electron is excited in a molecule in a basal singlet state (either by absorption or radiation) into a state of greater energy, an excited singlet or triplet state can be obtained.

Therefore, ISC is understood as an a non radio active transition between states with different spin multiplicity.

Correct answer is C:  a radiative transition between states with the same spin.

8 0
4 years ago
A researcher measures the thickness of a layer of benzene (nn = 1.50) floating on water by shining monochromatic light onto the
baherus [9]

Answer:

The minimum thickness is t= 8.75*10^{-8} m

Explanation:

generally the equation for thin film interference is mathematically represented as

            2nt = (m + \frac{1}{2} )  \lambda

Where t the  thickness  

           m is any  integer

            n is the refractive index of the film

            \lambda is the wavelength of light

Since we are looking for the thickness we make t the subject of the  formula

          t = \frac{(m+ \frac{1}{2} ) \lambda}{2n}

m= 0 cause the thickness is minimum at m=0

   Substituting values

                    t = \frac{(0 +\frac{1}{2}) 8525*10^{-9} }{2 *1.5}

                       t= 8.75*10^{-8} m

8 0
3 years ago
Read 2 more answers
you are trying to figure out the voltage of a battery when you know the current and the resistance. the current(i) is 25 Amps, a
Brums [2.3K]

Answer:

V= 250 volts

Explanation:

V=IR

V=25*10

V=250 volts

8 0
3 years ago
Read 2 more answers
How does the direction of current flow in the coil affect the orientation of the magnetic field produced by the electromagnet
Lynna [10]

Answer:

The magnetic field produced by an electric current is always oriented perpendicular to the direction of the current flow. And.Direction of magnetic field is governed by the 'right hand thumb rule, The right hand rule states that: to determine the direction of the magnetic force on a positive moving charge, ƒ, point the thumb of the right hand in the direction of v, the fingers in the direction of B, and a perpendicular to the palm points in the direction of Force . Similar to the situation with electric field lines, the greater the number of lines (or the closer they are together) in an area the stronger the magnetic field.

8 0
3 years ago
Perform the calculation and report your answer using sig figs. 657.70 - 26.543
Anton [14]

Answer:

The answer is 631.157

Explanation:

The question requested that the answer to the subtraction of 26.543 from 657.70 must be written using significant figures.

Here are a few tips about how to Identify significant figures.

1) It should be noted that <u>the number "0" is what is usually (but not always) affected</u> while trying to identify significant figures. Hence, <u>all other numbers/digits are always significant</u>. For example, 26.543 has five significant figures.

2) The zeros found between these "other numbers/digits" are also significant. For example, 2202 has four significant figures.

3) In the case of a decimal, the tailing zeros or the final zero is also significant. 657.70 and 657.07 have five significant figures.

Now, back to the question

657.70  - 26.543  = 631.157.

Our final answer does not have a zero, hence all the digits (six) are significant.

8 0
3 years ago
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