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2 years ago

An important aspect of fission reactions is that they produce _______________ which allow for chain reactions.

Physics

2 answers:

Alex777 [14]2 years ago

4 0

An important aspect of fission reactions is that they produce free neutrons, which causes chain reactions.

yan [13]2 years ago

4 0

An important aspect of fission reactions is that they produce _____<u>Neutrons</u>__________ which allow for chain reactions.

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A group of students were investigating the force of gravity. They began by dropping a foam ball from a height of 3 meters into a

kondaur [170]

Answer:B

Explanation:

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3 years ago

Describe characteristics and identify oxidation-reduction(redox) reactions. <br><br> plz and thx

mars1129 [50]

Answer:

I hope This helps

Explanation:

The majority of oxidation-reduction (redox) reactions share two critical features. One is that a reduction happens in both, while equivalent oxidation occurs; they are combined.

8 0

2 years ago

A tension force of 175 N inclined at 20.0° above the horizontal is used to pull a 40.0 - kg packing crate a distance of 6.00 m o

Murljashka [212]

Answer:

(a) Work done by the tension force is 987 J

(b) Coefficient of kinetic friction between the crate and surface is 0.495

Explanation:

(a)

Work done by any force F in moving an object by a distance d making an angle $\Theta$ with the direction of force is given by

$W=Fd\cos (\Theta )$

$W=175 \times 6 \times \cos (20 )J=987J$

Thus work done by the tension force is 987 J

(b)

Normal force on the crate is given by

$N= mg-F\sin \Theta =(40\times 9.8-175\times \sin 20)Newton$

=>N=332 Newtons

Since crate is moving with constant speed . Therefore using Newtons second law .

$Fcos(\Theta ) -\mu_k N=0$

Where $\mu_k$ =coefficient of kinetic friction

$\therefore \mu_k=\frac{F\cos (\Theta )}{N}$

=> $\mu_k=\frac{175\times \cos 20}{332}$

=> $\mu _k= 0.495$

Thus coefficient of kinetic friction between the crate and surface is 0.495

4 0

3 years ago

1.A motorcycle’s velocity at the top of the hill is 11.0 m/s. 4.0 seconds later it reaches the bottom of the hill with a velocit

daser333 [38]

Answer:

1) as far as I remember

Let's take 20 as vf (final velocity) and 11 as (initial velocity) and 4 as time

So we would use this formula a=vf-vi/t

So 20-11/4

Asnwer 2.25

6 0

3 years ago

A laboratory experiment produces a single-slit diffraction pattern on a screen. If the slit is made narrower, the bright fringes

AlekseyPX

Answer:

fringes move farther

Explanation:

The relation between the distance between the fringes is given by

y = Dλ/d

where, D is the distance between the plane of slit and the screen

d is the width of slit, λ is the wavelength of light used.

As the slit made narrower, that means d decreases, the value of y increases, that means the fringes move farther.

8 0

2 years ago