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Alex17521 [72]
3 years ago
6

Help pls !!! Which statement is true for nuclear reactions but not for chemical reactions?

Physics
2 answers:
Nat2105 [25]3 years ago
8 0

Answer:

d

Explanation:

iris [78.8K]3 years ago
7 0

Answer:

D

Explanation: this is why they have so much more energy released

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Choose the correct statement below that accurately describes the shear and normal stresses in a beam. A. Shear stresses are maxi
Scorpion4ik [409]

Answer:

A. Shear stresses are maximum at the neutral axis and normal stresses are maximum furthest from the neutral axis.

Explanation:

Normal stress :

Normal stress is defined as the stress or the restoring force that occurs on the plane when an external axial load is applied on it. For a beam the normal stress is maximum at the point furthest from the neutral axis and is zero at the neutral axis of the beam.

Shear stress :

Shear stress is a stress which occurs when the force acts on the surface of the member in a parallel direction. It changes the shape of the member.  For a beam, the shear stress is maximum at the neutral axis.

6 0
3 years ago
In a lab experiment, two identical gliders on an air track are held together by a piece of string, compressing a spring between
ddd [48]

Answer:

Part a)

v_2 = -0.300

Part b)

Here final kinetic energy is more than the initial kinetic energy

This increase in kinetic energy is due to spring connected between them as the spring energy is converted into kinetic energy of two blocks

Explanation:

Part a)

As we know that there is no external force on the system of two gliders

So here we can use momentum conservation for two gliders

So we will have

m_1 v_1 + m_2 v_2 = (m_1 + m_2)v_i

m_1 = m_2

1.300 + v_2 = 2(0.500)

v_2 = -0.300

Part b)

now we will have

initial kinetic energy of both gliders is given as

K_i = \frac{1}{2}(m + m)(0.500)^2

K_i = 0.25m

Final kinetic energy of two gliders

K_f = \frac{1}{2}m(0.300)^2 + \frac{1}{2}m(1.300)^2

K_f = 0.89 m

so here final kinetic energy is more than the initial kinetic energy

This increase in kinetic energy is due to spring connected between them as the spring energy is converted into kinetic energy of two blocks

8 0
3 years ago
A commuter train travels from the airport for half an hour at 110 km/hr until it reaches the
nikklg [1K]

Answer:

it would be 10km

Explanation:

because that reaches max height before it falls stupid

7 0
3 years ago
What is 74000000 in scientific notation
bekas [8.4K]
It is 7.4x(10 to the power of 7)
3 0
3 years ago
What would be the resulting condition if Earth's axis was perpendicular to the Sun?
blagie [28]

Answer:

I belive it would be B or D, but B seems more likely

Explanation:

3 0
3 years ago
Read 2 more answers
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