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zavuch27 [327]
4 years ago
15

Which explains why more energy is released in nuclear reactions than in chemical reactions? Chemical reactions are always endoth

ermic. No molecular bonds are broken in nuclear reactions. Protons and neutrons are exchanged in chemical reactions. In nuclear reactions, mass is converted to energy.
Physics
2 answers:
Ad libitum [116K]4 years ago
7 0
In nuclear reactions, mass is converted to energy.
Natali [406]4 years ago
3 0
More energy is released in nuclear reactions than in chemical reactions; this is because in nuclear reactions, mass is converted to energy. Nuclear energy released in nuclear fission and fusion is several 100 million times as large as an ordinary chemical reaction like the combustion process. The reason why nuclear energy release so much energy is because tremendous amounts of energy is released at one time. The nuclei in a nuclear reaction undergo a chain reaction, causing the neutrons to move extremely fast and release high amounts of energy. 
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A 1 kilogram ball has 8 joules of kinetic energy. what is its speed
ivann1987 [24]
KE =  \frac{1}{2}mv^{2} \\ v =  \sqrt{ \frac{2KE}{m} }  \\ v =  \sqrt{ \frac{2*8J}{1kg} } \\ v = 4m/s

Therefore, the ball has a velocity of 4m/s.
6 0
3 years ago
SELECT ALL OF THE ANSWERS THAT APPLY (<--- Please take notice to this part of my question)
Rufina [12.5K]
I believe it's Seismographs, Tiltmeters, and Correlation Spectometers.
Hopefully I helped ^~^
5 0
3 years ago
Read 2 more answers
A 920-kg sports car collides into the rear end of a 2300-kg SUV stopped at a red light. The bumpers lock, the brakes are locked,
GrogVix [38]

Answer:21.45 m/s

Explanation:

Given

Mass of sport car=920 kg

Mass of SUV=2300 kg

distance to which both car skid is 2.4 m

coefficient of friction (\mu)=0.8

Let u be the initial velocity of both car at the starting of skidding

and they finally come to zero velocity

v^2-u^2=2as

acceleration=\mu g=0.8\times 9.8=7.84 m/s^2

s=2.4 m

0-(u)^2=2\times (-7.84)\times 2.4

u=6.13 m/s

so before colliding sport car must be travelling at a speed of

920\times v=(920+2300)\times 6.13  (conserving momentum)

v=21.45 m/s

7 0
3 years ago
An electron is pushed into an electric field where it acquires a 1-V electrical potential. Suppose instead that two electrons ar
sleet_krkn [62]

Answer:

0.5 V

Explanation:

The electric potential distance between different locations in an electric field area is unaffected by the charge that is transferred between them. It is solely dependent on the distance. Thus, for two electrons pushed together at the same distance into the same field, the electric potential will remain at 1 V. However, the electric potential of one of the two electrons will be half the value of the electric potential for the two electrons.

6 0
3 years ago
A man of mass 80.0 kg stands on a platform of mass 40.0 kg. He pulls on a rope that is fastened to the platform and runs over a
Vesnalui [34]

Answer:F=648 N

Explanation:

Given

mass of man m_1=80 kg

mass of Platform m_2=40 kg

acceleration of system a=1 m/s^2

Let F be the force with which man pulls the rope which will also create a tension of F in rope

From Diagram

2F-(m_1+m_2)g=(m_1+m_2)a

2F=(m_1+m_2)(g+a)

F=\frac{(m_1+m_2)(g+a)}{2}

F=\frac{(80+40)(9.8+1)}{2}

F=\frac{1296}{2}

F=648 N

7 0
3 years ago
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