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hjlf
2 years ago
15

IN nuclear in oder to slow down fast neutron the target material should contain

Physics
1 answer:
stealth61 [152]2 years ago
8 0

Answer:

it depends if it is alpha ,beta or gamma

Explanation:

if alpha use paper

if beta use some clothing or aluminium

if it is gamma use lead

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⦁ A 68 kg crate is dragged across a floor by pulling on a rope attached to the crate and inclined 15° above the horizontal. (a)
GREYUIT [131]

Answer:

303.29N and 1.44m/s^2

Explanation:

Make sure to label each vector with none, mg, fk, a, FN or T

Given

Mass m = 68.0 kg

Angle θ = 15.0°

g = 9.8m/s^2

Coefficient of static friction μs = 0.50

Coefficient of kinetic friction μk =0.35

Solution

Vertically

N = mg - Fsinθ

Horizontally

Fs = F cos θ

μsN = Fcos θ

μs( mg- Fsinθ) = Fcos θ

μsmg - μsFsinθ = Fcos θ

μsmg = Fcos θ + μsFsinθ

F = μsmg/ cos θ + μs sinθ

F = 0.5×68×9.8/cos 15×0.5×sin15

F = 332.2/0.9659+0.5×0.2588

F =332.2/1.0953

F = 303.29N

Fnet = F - Fk

ma = F - μkN

a = F - μk( mg - Fsinθ)

a = 303.29 - 0.35(68.0 * 9.8- 303.29*sin15)/68.0

303.29-0.35( 666.4 - 303.29*0.2588)/68.0

303.29-0.35(666.4-78.491)/68.0

303.29-0.35(587.90)/68.0

(303.29-205.45)/68.0

97.83/68.0

a = 1.438m/s^2

a = 1.44m/s^2

7 0
4 years ago
Describe one of the customs that Darwin had to participate in at sea as new sailor.
zysi [14]

Answer: Describe one of the customs that Darwin had to participate in at sea as new sailor.

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5 0
3 years ago
A motorcycle moving 18.8 m/s has<br> 57800 J of KE. What is its mass?<br> (Unit = kg)
Nady [450]

Answer:10

Explanation:

3 0
3 years ago
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Everyday activities do NOT produce significant muscle growth because:
Reil [10]

Answer:

When elements bond together or when bonds of compounds are broken and form a new substance

Explanation:

7 0
3 years ago
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Question 1
m_a_m_a [10]

Answer:

Gravity

Explanation:

Pretty self-explanatory

We are kept on earth because of gravity and it keeps planets orbiting around the sun.

3 0
3 years ago
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