PHYSICS MIDDLE SCHOOL

Nuclear Fission only happens in the nuclear reactors of nuclear power plants.A
True
B
False

Answers

Answer 1
Answer:

Answer:

true

Explanation:

Related Questions

Which two of the following are the densest of the materials shown?Material Mass (g) Volume (L)Rock 1000 0.5Pillow 200 10Bottle of soda 2000 2Loaf of bread 100 1
URGENT HELP!Rank the states of matter from weakest to strongest intermolecular forcesQuestion 1 options:gas, solid, liquidgas, liquid, solidsolid, liquid, gassolid, gas, liquidThe state of matter with an indefinite shape and definite volume is _____.Question 3 options:Solidliquidgasplasmaplasma Deposition and condensation is an example of an endothermic reactionQuestion 7 options:TrueFalseWhich one of the following statements best describes the particles in a gas?Question 8 options:They are very close together and are able to vibrate.They are stationary and not able to vibrateThey are moving very slow and are far apart.They are moving very fast and are far apart.
Can you dab at 40 degree angle.
A box measures 20cm by 10cm by 5cm
The slope on a distance-time graph shows a ball moving from 20 m to 40 m in 1 s and from 40 m to 80 m in the next second

What is the final temperature when a 3.0 kg gold bar at 99 0C is dropped into 0.22 kg of water at 25oC?

Answers

Answer:

46.9 C

Explanation:

The heat released by the gold bar is equal to the heat absorbed by the water:

m_g C_g (T_g-T_f)=m_w C_w (T_f-T_w)

where:

m_g = 3.0 kg is the mass of the gold bar

C_g=129 J/kg C is the specific heat of gold

T_g=99 C is the initial temperature of the gold bar

m_w = 0.22 kg is the mass of the water

C_w=4186 J/kg C is the specific heat of water

T_w=25 C is the initial temperature of the water

T_f is the final temperature of both gold and water at equilibrium

We can re-arrange the formula and solve for T_f, so we find:

m_g C_g T_g -m_g C_g T_f = m_w C_w T_f - m_w C_w T_w\nm_g C_g T_g +m_w C_w T_w= m_w C_w T_f +m_g C_g T_f \nT_f=(m_g C_g T_g +m_w C_w T_w)/(m_w C_w + m_g C_g)=\n=((3.0)(129)(99)+(0.22)(4186)(25))/((0.22)(4186)+(3.0)(129))=(38313+23023)/(921+387)=(61336)/(1308)=46.9 C

Answer:

T_(f)=46.9C

Explanation:

Given:

m_(g) =3.0kg                    m_(w) =0.22kg

T_(g)=99 C                       T_(w)=25C

c_(p,g)=129J/kg.C          c_(p,w)=4186J/kg.C

Unkown:

T_f=?

Formula:

T_f=(m_g.c_(p,g).T_g+m_w.c_(p,w).T_w)/(m_w.c_(p,w)+m_g.c_(p,g))

Step by step solution:

T_f=((3)(129)(99)+(0.22)(4186)(25))/((0.22)(4186)+(3)(129))

T_f=(61336)/(1308)

T_f=46.9C

Since the ball slowly comes to a stop what does this mean about the net force on the ball as it rolls across the field?

Answers

Since the speed of the bll is decreasing, there must be a net force
acting on it in the direction opposite to its motion.

What two motions combine to produce an orbit

Answers

The correct option for above statement is:

Gravity and Inertia

Explanation:

For instance, Gravity from our sun holds us at an essentially same range all the way around. It makes sure we don't sling off into the wisdom of our solar system. Inertia, keeps us in movement, if there were no inertia, our revolution would stop at a standstill. If we stayed, we would be sucked into the sun by its gravity.
Field motion ( as opposed to collision motion) which are forces like gravity. And Static motion ( as opposed to kinetic motion)
Static motion is where an object moves on or around another moving object. (Circular motion)

Hope this helped

You push a friend sitting on a swing she has a mass of 50 kg and accelerates a rate of 4 m/s2 find the force you exerted

Answers

Force exerted: 100

To find force you multiply the mass by acceleration. The formula is
F = Ma, and the SI unit for force is newtons.

during a space shuttle launch about 830,000 kg of fuel is burned in 8 min. the fuel provides the shuttle with a constant thrust, or forward force. how does newton's second law of motion explain why the shuttle's acceleration in creases as the fuel is burned?

Answers

As the fuel burns, the shuttle accelerates in the creases because the acceleration of an object caused by a net force is inversely proportional to the size of the net force.

How does acceleration work?

The rate at which velocity, measured in terms of speed and direction, changes over time is known as acceleration. Anything is said to have been accelerated when it goes faster or slower in a straight line.

Because the direction is always shifting, motion on a circle accelerates even while the speed is constant.

A speed is acceleration, right?

Acceleration is the term used to describe a change in an object's speed or direction. Velocity changes at an acceleration rate. Recall that velocity consists of two elements: speed and direction.

To know more about Acceleration, visit-brainly.com/question/2303856

#SPJ2
The shuttles acceleration in the creases as the fuel is burned because the acceleration of the obect as produced by net force is directly proportional to the magnitude of the net force.

Which electromagnetic waves emitted from the sun produce a heating effect?

Answers


ANY electromagnetic waves emitted from the sun and absorbed by something
will raise the thing's temperature.

Regarding our skin . . .  the electromagnetic waves emitted from the sun that
produce a heating effect are known commonly as "heat", or in more technical
jargon as "infrared radiation".
Other Questions
When a wave enters a medium and changes into another form of energy, usually TE, This is called:a. absorption b. transmissionc. reflectiond. refraction
How are plants involved in a water cycle
Jupiter’s radius is much larger than that of Earth. However, Jupiter does not have nearly the mass that Earth would have if it were as large as Jupiter. Why?Select one:a. Jupiter is farther from the sun so the force of gravity on it is weaker.b. A great deal of Jupiter’s volume is in the gas phase.c. Most of Jupiter's mass is found in its rings and moons.d. Jupiter’s internal heat serves as an outward force which counters gravity.
How does a real image differ from a virtual image?