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OLga [1]
2 years ago
11

The back shelf of a car has a physics textbook on it. The coefficient of static friction of 0.44 between the book and the surfac

e. If the car is initially moving at a speed of 16 m/s, in how short a distance can the car be stopped at constant acceleration without causing the book to slide forward (and hit the driver in the back of the head)? (This is why you should never keep packages on the back shelf of your car.)
Physics
1 answer:
Law Incorporation [45]2 years ago
8 0

Answer:29.68 m

Explanation :  

Given

coefficient of friction \mu =0.44

Car initial speed=16 m/s

The maximum acceleration that book can bear without sliding is \mu g

a_{max}=0.44\times 9.8=4.312 m/s^2

using v^2-u^2=2as

Final velocity v=0

-(16)^2=2(-4.31)s

s=\frac{256}{2\times 4.312}

s=29.68 m

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Answer:

rate of fission =5.89*10^3 1\Year

Explanation:

we know that

rate of fission is given asrate of fission = \frac{0.69}{(T_{1/2})_{fission}} *\frac{ Mass* Avogardo\ number}{Molar\ mass}

(T_{1/2})_{fission} = 3*10^{17} y

mass = 1.0 g

avogardo number = 6.02*10^23

molar mass of isotopes 235U =235

Putting all value to get rate of emission

rate of fission = \frac{0.69}{3*10^{17}} *\frac{1.0*6.02*10^{23}}{235}

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5 0
2 years ago
Look at the two question marks between zinc (Zn) and arsenic (As). At the time, no elements were known
marissa [1.9K]

Answer:

Mendeleev predicted the atomic mass of each element along with compounds they each should form.

Explanation:

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A microwave oven operates at 2.60 ghz . what is the wavelength of the radiation produced by this appliance?
cestrela7 [59]
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An electrical conductor is an element with __________ electrons in its outer orbit.
Setler [38]
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2 years ago
A uniform magnetic field makes an angle of 30o with the z axis. If the magnetic flux through a 1.0 m2 portion of the xy plane is
Irina18 [472]

Answer:

(b) 10 Wb

Explanation:

Given;

angle of inclination of magnetic field, θ = 30°

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Magnetic flux is given as;

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Option "b"

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