How much heat is absorbed by 34g iron skillet its temperature rises from 12c to 24 c ?

Answer:what you would do it 1.6*1.6/1.0=V (/=divied *=multiple) and then thats how you would fiqure out V wich V=2.56cm3

hope this helps

Answer:3H2O + light-c3h603+302

Explanation:

Answer: A) 3CO2

Explanation:

Answer:

1170 m

Explanation:

Given:

a = 3.30 m/s²

v₀ = 0 m/s

v = 88.0 m/s

x₀ = 0 m

Find:

x

v² = v₀² + 2a(x - x₀)

(88.0 m/s)² = (0 m/s)² + 2 (3.30 m/s²) (x - 0 m)

x = 1173.33 m

Rounded to 3 sig-figs, the runway must be at least 1170 meters long.

the answer is very clearly C.

a common example is scissors

Answer:

The correct option is: A machine is classified as a compound machine if it C. is made up of two or more simple machines that operate together.

Explanation:

Composite machines are mechanical devices that have been formed from two or more simpler machines which are connected in series. In this way, when one of these parts of the composite machine is activated, the rest work in a coordinated manner, being able to offer together a function that individually could not.

Composite machines have operators that work in coordination. These operators can be:

In short, the correct option is: A machine is classified as a compound machine if it C. is made up of two or more simple machines that operate together.

Answer:

[tex]2.99\cdot 10^{11}C[/tex]

Explanation:

The mass of one electron is

[tex]m_e = 9.11\cdot 10^{-31}kg[/tex]

So the number of electrons contained in M=1.7 kg of mass is

[tex]N=\frac{M}{m_e}=\frac{1.7 kg}{9.11\cdot 10^{-31}kg}=1.87\cdot 10^{30}[/tex]

The charge of one electron is

[tex]e=1.60\cdot 10^{-19} C[/tex]

So, the total charge of these electrons is equal to the charge of one electron times the number of electrons:

[tex]Q=Ne=(1.87\cdot 10^{30})(1.6\cdot 10^{-19}C)=2.99\cdot 10^{11}C[/tex]

Final answer:

The total electric charge of 1.7 kg of electrons is 1.87 × 10^50 electrons.

Explanation:

The total electric charge of 1.7 kg of electrons can be calculated using the formula:

Total charge = Number of electrons * Charge per electron

Given that the charge per electron is e = 1.60 × 10^-19 C, we can calculate the number of electrons:

Number of electrons = Total charge / Charge per electron

Plugging in the values, we get:

Number of electrons = 1.7 kg / (9.11 × 10^-31 C)

Simplifying this expression gives us:

Number of electrons = 1.87 × 10^50 electrons

Answer:

9 terms. In carbon dioxide (CO2), there are two oxygen atoms for each carbon atom. Each oxygen atom forms a double bond with carbon, so the molecule is formed by two double bonds. Two double bonds means that the total number of electrons being shared in the molecule is.

Explanation:

They are wide because they need to provide support for the rest of the building. The wider the foundation, the stronger the overall structure is going to be. If the base was not wide, and you continued to put weight on it then it would eventually collapse. Think of it as legos

" The correct answer is that walls give additional support to the building's structure, which helps to distribute the weight of the building over a larger area, thereby reducing the pressure on the soil beneath.

Foundations of buildings are constructed to be wide for several reasons related to the principles of physics and soil mechanics. The primary reason is to increase the surface area over which the weight of the building is distributed. By spreading the load over a larger area, the pressure exerted on the ground is reduced, which helps to prevent the foundation from sinking into the soil. This is particularly important in areas where the soil has a low bearing capacity.

In addition to the wide foundation, walls play a crucial role in supporting the structure. Walls are built on top of the foundation and extend upward to support the floors and roof. They serve multiple functions:

1. Load Bearing: Walls made of bricks, concrete, or other strong materials can bear the load of the floors and roof, transferring this weight to the foundation and then to the ground.

2. Lateral Support: Walls provide lateral support to resist forces acting horizontally, such as wind loads, earthquake forces, and the pressure of adjacent soil when the ground is sloped. This helps to stabilize the building and prevent it from overturning or sliding.

3. Structural Integrity: Walls contribute to the overall rigidity and stability of the building's structure. They help to keep the building square and plumb, ensuring that the windows, doors, and other components function correctly.

4. Insulation and Protection: Walls also provide thermal insulation and protection from the elements, ensuring a comfortable indoor environment and protecting the interior from weather-related damage.

5. Space Definition: Walls define the interior spaces of a building, creating rooms and corridors, and they also provide privacy and security.

In summary, while the foundation serves as the base that supports the entire structure by distributing its weight over a wide area, the walls are essential for providing additional support, stability, and functionality to the building. They work together to ensure the building's safety and longevity."

I think it is graph (b). You can visually see the data on a graph.

Momentum=Mass•Velocity

=5 kg•2 m/s

=10 kg-m/s

The momentum of a book with a mass of 5 kg is pushed off a table with a velocity of 2 m/s is option D. 10 kg-m/s.

Here,

        p = momentum

        m = mass

         v = velocity

        p = mv

           =5×2

           =10 Kg*m/s

Hence, the momentum of a book with a mass of 5 kg is pushed off a table with a velocity of 2 m/s is option D. 10 kg-m/s.

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Answer:

C) Acceleration 1 - constant acceleration. Acceleration 2 - varied acceleration.

Explanation:

In a velocity-time graph, the acceleration corresponds to the slope of the curve.

In fact, acceleration is defined as the ratio between the change in velocity and the time interval:

[tex]a=\frac{\Delta v}{\Delta t}[/tex]

However, we see that in a velocity-time graph, [tex]\Delta v[/tex] corresponds to the increment in the y-variable ([tex]\Delta y[/tex]), while [tex]\Delta t[/tex] corresponds to the increment in the x-variable ([tex]\Delta x[/tex]). Therefore, acceleration can also be written as

[tex]a=\frac{\Delta y}{\Delta x}[/tex]

which is exactly the definition of slope of the curve.

Now we notice that:

- For object 1, the slope is constant: this means that the acceleration is constant

- For object 2, the slope varies: this means that the acceleration varies as well

Answer:C) Acceleration 1 - constant acceleration. Acceleration 2 - varied acceleration.

Explanation:

The lines on the graph are best described by the following: Acceleration 1 - constant acceleration. Acceleration 2 - varied acceleration. Acceleration 1 DOES show positive acceleration, but since the slope of the line does not vary, the acceleration is constant. Acceleration B has a varied slope, and therefore, a varied acceleration. It does happen to be positive and negative. For zero acceleration, the slope slope would be zero and the line horizontal.

Answer:

Paleobotany is the study of plant fossils

Explanation:

Answer:

The correct answer is plant fossils.

Explanation:

Paleobotany is a science shared by botany and paleontology, which studies the remains of plants that lived in the past. It also includes the use of the remains for the reconstruction of ancient environments and the history of life. It includes the study of fossils of terrestrial plants and marine algae.

Have a nice day!

Answer:

Grow plants where little light is available

Explanation:

The plants need the ultraviolet rays in order to be able to survive and develop. The need mainly comes from the dependence of these rays for production of food, in a process known as photosynthesis. The plants are producers, thus they create their own food. In order to be able to do that they are using the ultraviolet rays, as well as water, and carbon dioxide. By combining them, the plants manage to create glucose for them, and that is their food source. The plants that are kept at places where there's not enough light are often exposed to ultraviolet rays so that they are able to perform the process of photosynthesis and grow properly.

Any object with a temperature above absolute zero emits light at  all wavelengths. If the object is perfectly black (so it doesn't reflect any  light), then the light that comes from it is called blackbody radiation.

The energy of blackbody radiation is not shared evenly by all  wavelengths of light. The spectrum of blackbody radiation (below) shows that  some wavelengths get more energy than others. Three spectra are shown, for three  different temperatures. (One of the curves is for the surface temperature of the  Sun, 5770 K.)

Answer:

A

Explanation:

Snell's law states:

n₁ sin θ₁ = n₂ sin θ₂

where n is the index of refraction and θ is the angle of incidence (relative to the normal).

The index of refraction of air is approximately 1.  So:

1 sin 30° = 1.52 sin θ

θ ≈ 19°

The angle of refracted ray with respect to normal is 19°.

It states that the ratio of sine of angle of incidence and angle of refraction is equal to the refractive index of second medium to the first medium.

sini/sinr =n₂/ n₁

Given the angle of incidence i = 30 degrees, refractive index of glass n₂=1.52, refractive index of air n₁ =1, then , angle of refraction is

1 x sin 30° = 1.52 x sin r

r ≈ 19°

Thus, the angle of refracted ray with respect to normal is 19°.

Learn more about Snell's law.

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Answer:

Explanation:

Ohm's law:

V = IR

Given V = 120 V and R = 15 Ω:

120 V = I (15 Ω)

I = 8 A

Force = mass*acceleration

Force and acceleration are dependent on one another, and therefore, the force does affect the acceleration of the car.

Answer:Any force can affect the acceleration of a car so yes.

Explanation:

Answer:

Meteorology

Explanation:

Answer:

Explanation:

Climatology.

If anyone wants to study global warming and climate change he should study climatology in which all the phenomenon related to climate, weather and its impact on environment are studied. Global warming a great concern now a days and it impact our environment in negative manner. So this topic is also comes under climatology.

Answer:

Explanation:

I wonder what level of physics you are taking? If this is a beginning course (which I'm going to assume) then the KE is

KE = 1/2 m v^2

KE = 1/2 * 2kg * (10 m/s)^2

KE = 100 Joules.

If you are in an upper level course and need to take into account the rotational motion, leave a note.

Answer:

Nothing goes to Kinetic Energy

Both-1, 2, 4

Potential Energy-3 and 5

Explanation:

Answer:

 Transverse waves

 Move perpendicular

 Frequency is directly related to speed

 Frequency is inversely related to wavelength

 Wavelength is directly related to speed

 Transfer energy

Explanation:

Electromagnetic waves consist of periodic oscillations of electric and magnetic fields. As all waves, they transfer energy, but not matter,

Electromagnetic waves are transverse waves, which means that they oscillate in a plane perpendicular to the direction of propagation of the wave. The speed, the wavelength and the frequency of electromagnetic waves are related by the following equation:

[tex]c=f\lambda[/tex]

where

c is the speed (speed of light, which is constant for electromagnetic waves travelling in a vacuum)

f is the frequency

[tex]\lambda[/tex] is the wavelength

From this equation we see that:

- The frequency is directly related to the speed

- The wavelength is directly related to the speed

- The frequency is inversely related to the speed

your answer would be B. Mechanical to electrical

The energy transformation in hydroelectric power plants is from mechanical to electrical. Water potential energy is converted to kinetic energy to turn turbines, which are then used to generate electricity with high efficiency.

In hydroelectric power plants, the energy transformation that occurs when moving water is converted into electric power is mechanical to electrical. The process begins with water at high elevations, which possesses potential energy due to gravity. When the water flows down and over the dam, this potential energy is transformed into kinetic energy. This kinetic energy is then used to turn turbines, which is a mechanical process.

The turbines are connected to generators, which then convert the mechanical energy into electrical energy. This conversion is highly efficient, with typical hydroelectric turbine-generators achieving around 90 percent efficiency or higher. Additionally, the ultimate source of the electrical energy produced by a hydroelectric plant is solar energy, which drives the hydrological cycle that elevates water to higher altitudes.

The object will not move, since both forces have the same magnitude although not the same direction.

This is due to Newton’s first law of motion, that estates:

If a body is in equilibrium the sum of all the forces acting on it is equal to zero:

[tex]F_{total}=29N-29N=0[/tex]  

According to this law, an object in rest can be in equilibrium (net force equals to zero), and a moving object can also be in equilibrium, as long as it keeps a constant velocity.

The answer is a, 343

In dry air at 20 °C (68 °F), the speed of sound is 343 metres per second (about 767 mph, 1234 km/h or 1,125 ft/s).

The answer is 343 m/s.

polar covalent, it is what happens when there is unequal bond between two atoms, where one has a slightly negative charge and one has a slightly positive charge.

Have A Great Day!

The angle of reflection is equal to the angle of incidence.

The answer is C.

Answer:

C. angle of reflection

Explanation:

As we know that as per law of reflection of light angle of incidence with respect to the normal must be equal to the angle of reflection with normal in other direction.

So we can say that

angle of incidence = angle of reflection

so here we can say that the correct answer would be

C. angle of reflection

so the light ray will reflect at the same angle as that of angle of incidence given in it

so it must be

[tex]\theta_i = \theta_r[/tex]

1) [tex]x= v_{0x} t = 23.4 t\\y=y_0 + v_{0y}t-\frac{1}{2}gt^2 = 12+21.8t -4.9t^2[/tex]

The initial data of the projectile are:

[tex]y_0 = 12 m[/tex] is the initial height

[tex]v_0 = 32 m/s[/tex] is the initial speed of the projectile, so its components along the x- and y- directions are

[tex]v_{0x} = v_0 cos \theta = (32 m/s)(cos 43^{\circ})=23.4 m/s\\v_{0y} = v_0 sin \theta = (32 m/s)(sin 43^{\circ})=21.8 m/s[/tex]

The motion of the cannonball along the x-direction is a uniform motion with constant speed, while on the y-direction it is an uniformly accelerated motion with constant acceleration g=9.8 m/s^2 downward. So, the two equations of motion of the projectile along the two directions are:

[tex]x= v_{0x} t = 23.4 t\\y=y_0 + v_{0y}t-\frac{1}{2}gt^2 = 12+21.8t -4.9t^2[/tex]

2) 4.94 s

To determine how long the cannon ball was in the air, we need to find the time t at which the cannonball hits the ground, so the time t at which y(t)=0:

[tex]0=12+21.8t-4.9 t^2[/tex]

Solving the equation with the formula, we have:

[tex]t_{1,2}=\frac{-21.8\pm \sqrt{(21.8)^2-4(-4.9)(12)}}{2(-4.9)}[/tex]

which has two solutions:

t = -0.50 s

t = 4.94 s

Discarding the first solution which is a negative time so it has no physical meaning, the correct solution is

t = 4.94 s

3) 115.6 m

To determine how far the cannonball travelled, we need to find the value of the horizontal position x(t) when the ball hits the ground, at t=4.94 s. Substituting this value into the equation of motion along x, we find:

[tex]x=v_{0x}t=(23.4 m/s)(4.94 s)=115.6 m[/tex]

4) 2.22 s

The cannonball reaches its maximum height when the vertical velocity becaomes zero.

The vertical velocity at time t is given by

[tex]v_y(t)= v_{0y} -gt[/tex]

where

g = 9.8 m/s^2 is the acceleration due to gravity

Substutiting [tex]v_y(t)=0[/tex] and solving for t, we find

[tex]t=\frac{v_{0y}}{g}=\frac{21.8 m/s}{9.8 m/s^2}=2.22 s[/tex]

5) 36.2 m

The maximum height reached by the cannon is equal to the vertical postion y(t) when the vertical velocity is zero, so when t=2.22 s. Substituting this value into the equation of the vertical motion, we find:

[tex]y(t)=y_0 + v_{0y}t-\frac{1}{2}gt^2=12+(21.8)(2.22)-(4.9)(2.22)^2=36.2 m[/tex]

Answer:

True

Explanation:

Power = work done/time

Answer:

1.43 s

Explanation:

The time it takes for the container to reach the ground is determined only by the vertical motion of the container, which is a free-fall motion, so a uniformly accelerated motion with a constant acceleration of g=9.8 m/s^2 towards the ground.

The vertical distance covered by an object in free fall is given by

[tex]S=ut + \frac{1}{2}at^2[/tex]

where

u = 0 is the initial vertical speed

t is the time

a= g = 9.8 m/s^2 is the acceleration

since u=0, it can be rewritten as

[tex]S=\frac{1}{2}gt^2[/tex]

And substituting S=10.0 m, we can solve for t, to find the duration of the fall:

[tex]t=\sqrt{\frac{2S}{g}}=\sqrt{\frac{2(10.0 m)}{9.8 m/s^2}}=1.43 s[/tex]

the correct answers are :

1: It is detected by a seismograph.

3: It is based on the size of seismic waves.

4: It is affected by the amount of fault movement.

Answer:

The correct choices are

It is detected by a seismograph.

It is based on the size of seismic waves.

It is affected by the amount of fault movement.

Explanation:

seismograph is an instrument which is used to determine the earthquakes and records them.

The size of seismic waves is a measure of how strong the earthquake is.