1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
yulyashka [42]
3 years ago
5

Help!

Physics
1 answer:
dmitriy555 [2]3 years ago
7 0

Answer:

1.It's the world's most famous equation, but what does it really mean? "Energy equals mass times the speed of light squared." On the most basic level, the equation says that energy and mass (matter) are interchangeable; they are different forms of the same thing.

2.The process releases energy because the total mass of the resulting single nucleus is less than the mass of the two original nuclei.

3.In nuclear reactions, mass is never conserved—some mass is exchanged for energy and energy for mass. Nuclear reactions take place in an atom's nucleus. In a spontaneous nuclear reaction, such as radioactive decay, mass is "lost" and appears as energy in the form of particles or gamma rays.

4.In a nuclear reaction, mass decreases and energy increases. The sum of mass and energy is always conserved in a nuclear reaction.

5.The process releases energy because the total mass of the resulting single nucleus is less than the mass of the two original nuclei.

Explanation:

hope it helps

You might be interested in
What happens when the wire in an electromagnet is wrapped around a soft iron core?
Pavlova-9 [17]
The magnetic particles in a soft iron nail will line up with the magnetic field when the current is switched on. ... When you switch on the current, the coil becomes an electromagnet. But also, the soft iron core becomes a magnet. It will add to the strength of the electromagnet.
4 0
3 years ago
A light horizontal spring has a spring constant of 167 N/m. A 2.77 kg block is pressed against one end of the spring, compressin
aalyn [17]

Answer:

μ = 0.189

Explanation:

The spring potential energy will convert to work of friction

    Fd = ½kx²

μmgd = ½kx²

       μ = kx²/2mgd

       μ = 167(0.132²) / (2(2.77)(9.81)(0.284))

       μ = 0.18852424...

5 0
2 years ago
What is the speed of a 400 kg elevator that has 1800J of energy
sveta [45]

Answer: 1400

Explanation:

8 0
3 years ago
A pendulum is made by letting a 2.0-kg object swing at the end of a string that has a length of 2.1 m. The maximum angle the str
just olya [345]

Answer:

The speed of the object at the lowest point in its trajectory is:

v=2.34\: m/s

Explanation:

We can use the conservation of energy between the maximum point of swing and the lowest point of the pendulum.

P=K

mgh=\frac{1}{2}mv^{2} (1)

Where:

  • h is the height of the object at 30° with the vertical.
  • v is the speed at the lowest point.

We can find h using trigonometry.

h=L-Lcos(30)=L(1-cos(30))

h=2.1(1-cos(30))=0.28\: m

Now, using equation (1) we can find v.

gh=\frac{1}{2}v^{2}

2gh=v^{2}

v=\sqrt{2gh}

v=\sqrt{2(9.81)(0.28)}

v=2.34\: m/s

I hope it helps you!

8 0
3 years ago
an axe used to split wood is driven into a piece of wood a distance of 3.0 cm. If mechanical advantage of the axe is 0.85. how f
Sidana [21]
<h3><u>Answer;</u></h3>

3.53 cm

<h3><u>Explanation;</u></h3>

Mechanical advantage = Input distance/output distance

Input distance = 3.0 cm

Mechanical advantage = 0.85

Output distance = Input distance/Mechanical advantage

                           =  3.0/0.85

                           <u>= 3.53 cm</u>

           

5 0
3 years ago
Other questions:
  • A train travels 250 km westward from Carthage to Johnson City. The train arrives 2.5 hours after it left. What was the average v
    5·1 answer
  • When a force is applied to an object for an amount of time, it is known as __________.
    6·2 answers
  • While running, a person dissipates about 0.60 J of mechanical energy per step per kilogram of body mass. If a 61 kg person devel
    14·1 answer
  • Give two examples of gravity in the solar system
    11·1 answer
  • A spinning turbine can generate electricity only in the form of a/an _______ current.
    11·1 answer
  • Show that the units of g, previously given as N/kg, are also m/s^2.
    7·1 answer
  • A car moves with an average speed of 45 miles/hour. How long does the car take to travel 90 m
    9·2 answers
  • PLEASE HELP ME I AM TIMED!
    12·1 answer
  • An airplane has an average speed of 740 mph
    9·1 answer
  • 11. Why do dark surfaces absorb radiation better than light surfaces?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!