Sound travels slower in colder air than it does in warmer air. Make a claim about the effect of air temperature on the speed of sound.

Answer:

C) Electronegativity

Answer:462400joules

Explanation:

Mass=m=800kg velocity=v=34m/s

Kinetic energy=(m x v^2)/2

Kinetic energy =(800x34^2)/2

Kinetic energy =(800x34x34)/2

kinetic energy =924800/2

Kinetic energy =462400joules

Answer:

 a= g sinθ

Explanation:

Given that

Angle ,θ = 15° (from the horizontal)

Lets take the mass of the block = m

The acceleration due to gravity = g

The acceleration of the block = a

When block slide down :

The gravitational force on the block =  m g sinθ

By using Newton's second law

F= m a

F=Net force ,a acceleration ,m=mass

m g sinθ =  ma

a= g sinθ

Therefore the acceleration of the block will be g sinθ.

Answer:

A projectile is an object upon which the only force is gravity.

Explanation Gravity acts to influence the vertical motion of the projectile, thus causing a vertical acceleration. The horizontal motion of the projectile is the result of the tendency of any object in motion to remain in motion at constant velocity.

Final answer:

Gravity affects the vertical motion of a projectile by imparting a constant downward acceleration of 9.8 m/s², while the horizontal motion remains constant and independent of this vertical force. Consequently, the horizontal and vertical velocities of an object in projectile motion are influenced separately by gravity.

Explanation:

The unbalanced force of gravity affects the horizontal and vertical velocities of an object in projectile motion by impacting them independently. Gravity causes a constant vertical acceleration of 9.8 m/s² (downwards) that does not influence the horizontal motion, which remains constant if air resistance is ignored. The horizontal motion of an object in projectile motion is independent of its vertical motion because the force of gravity only acts downwards.

Projectile motion is interesting to study since it involves two independent components of motion: horizontal and vertical. An example of this independence is that the time it takes for a horizontally launched projectile to hit the ground is determined solely by its vertical motion, unaffected by its horizontal velocity.

During projectile motion, at the peak of its trajectory, the projectile has only a horizontal velocity component and effectively resembles uniform circular motion for an instant, since gravity acts perpendicular to the motion.

Answer: Scientists used relative dating and absolute dating.

Explanation:

Scientists used absolute dating to determine the actual number of years ago that events happened. They used relative dating to divide Earth's past into several time frames when similar organisms were on Earth.

This is used by scientists to measure time and events during Earth's history.

Answer : Geologic Time

Answer:

D- Water in the Pacific Ocean has more thermal energy and a lower temperature.

Explanation:

The Pacific Ocean had much more quantity compared to a cup of hot coffee.

The cup of coffee has a higher temperature due to direct heating, although the Pacific Ocean has more thermal energy because of its great mass.

Answer:

the answer is B ( Argon (Ar) )

Answer:C and B

Explanation:

i hope this helps

Answer:

The velocity is 6 m/s

Explanation:

We use the formula of kinetic energy=

Ec= 1/2 x m  x v2

2160 J = 1/2 x 120 kg x v2

v =[tex]\sqrt[n]{x} 2160Joulex2/120kg\\[/tex]

v= 6m/s

1Joule= 1 kgm2/s2

Answer:

The image will most likely be 20cm in front the mirror since the mirror was placed further 5cm.

Answer:

F = -1.682 i + 3.374 j [N] ; F = 3.77[N]; α = 65.78°

Explanation:

In order to be able to understand this problem more easily, we will have to draw the vectors at the point of origin and in this way, with the help of the angles we will be able to find each of the components of the forces.

Looking at the attached image we can see each of the three forces, take each force and decompose them into the x & y axes.

F1 = 5.81 [N]

[tex]F_{1x} = 5.81*cos(77) = 1.306[N]\\F_{1y} = 5.81*sin(77) = 5.66[N][/tex]

F2= 4.88 [N]

[tex]F_{2x}= - 4.88*cos(180-156) =-4.458[N]\\F_{2y}= 4.88*sin(180-156) =1.984[N][/tex]

F3= 4.52 [N]

[tex]F_{3x} = 4.52*cos(360-289)=1.47[N]\\F_{3y} = - 4.52*sin(360-289) = -4.27[N][/tex]

Now we can sum each of the forces in the different components

[tex]F_{x} =F_{x1}+F_{x2}+F_{x3} = 1.306-4.458+1.47 = - 1.682[N]\\F_{y} =F_{y1}+F_{y2}+F_{y3} = 5.66+1.984-4.27 = 3.374[N][/tex]

F = -1.682 i + 3.374 j [N]

The total magnitude can be calculated by Pythagoras theorem

[tex]F = \sqrt{(1.682)^{2}+(3.374)^{2} } \\F = 3.77 [N][/tex]

The direction can be calculates as follows:

tan(α) = 3.374/1.682

α = 65.78°

This angle was calculated with respect to the horizontal

The resultant vector is 11√2 km due north east.

The vector is a type of quantity which has both magnitude and direction. This quantities when expressed needs to specify both magnitude and direction.

We need to calculate the magnitude and direction separately.

Here firstly for the magnitude,

The magnitudes are both 11 km and they are at right angles to each other.

So, the resultant magnitude = √(11² +11²) km

=11√2 km

Now for the direction, one vector is due north and the other is due east.

So the resultant vector is due north east.

So the final vector is 11√2 km due North-East.

Answer:

Team A has the greatest momentum

Explanation:

The momentum of an object is a vector quantity given by

[tex]p=mv[/tex]

where

m is the mass of the object

v is its velocity

In this problem, we have to compare the momenta of the different sleds.

We have:

A) Sled Team A 48 kg moving at 10m/s:

m = 48 kg

v = 10 m/s

p = (48)(10) = 480 kg m/s

B) Sled Team B 14 kg moving at 18m/s

m = 14 kg

v = 18 m/s

p = (14)(18) = 252 kg m/s

C) Sled Team C 28 kg moving at 12m/s

m = 28 kg

v = 12 m/s

p = (28)(12) = 336 kg m/s

D) Sled Team D 22 kg moving at 12m/s

m = 22 kg

v = 12 m/s

p = (22)(12) = 264 kg m/s

So, team A has the greatest momentum.

Answer:

Explanation:

Magma is a molten and semi-molten rock mixture found under the surface of the Earth. This mixture is usually made up of four parts: a hot liquid base, called the melt; minerals crystallized by the melt; solid rocks incorporated into the melt from the surrounding confines; and dissolved gases. When magma is ejected by a volcano or other vent, the material is called lava. Magma that has cooled into a solid is called igneous rock. Magma is extremely hot—between 700° and 1,300° Celsius (1,292° and 2,372° Fahrenheit). This heat makes magma a very fluid and dynamic substance, able to create new landforms and engage physical and chemical transformations in a variety of different environments. How Magma Forms Earth is divided into three general layers. The core is the superheated center, the mantle is the thick, middle layer, and the crust is the top layer on which we live. Magma originates in the lower part of the Earth’s crust and in the upper portion of the mantle.

Molted magma comes outside Earth's surface and formed igneous rocks. Due to natural decay, this igneous rocks forms sedimentary rocks and due to  changes  of temperature, pressure and chemical changes both of the rocks transforms into metamorphic rocks.

A fundamental idea in geology, the rock cycle illustrates how the three primary types of rocks—sedimentary, metamorphic, and igneous—change over the course of geologic time.

When a rock is pushed out of its equilibrium circumstances, it changes. For instance, an igneous rock like basalt may disintegrate and evaporate when exposed to air or melt when it is subducted beneath a continent.

Rocks do not stay in an equilibrium state; rather, they change as they interact with new environments because of the driving forces of the rock cycle, plate tectonics, and the water cycle.

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Answer:Quantitative experiments show that 4.18 Joules of heat energy are required to raise the temperature of 1g of water by 1°C.

Explanation:

Answer: E = kA2/2 ⇒

A = √(2E/k) = √[2(3.24)/330] m = ? m  

Explanation: Equate the elastic potential energy at the amplitude to the total energy of the mass.  The answer will not depend on the mass.  

Answer:

3.6

Explanation:

Answer:

h = 2.5m

Explanation:

Sedimentary rock changes when it is exposed to extreme heat and pressure, but it can be caused by tectonic plate movement ( for heat ) and when the collide, you get the pressure.

Hope this helps, if not, comment below please!!!!

Sedimentary rock changes when it is exposed to extreme heat and pressure, but it can be caused by tectonic plate movement ( for heat ) and when the collide, you get the pressure.

Hope this helps, if not, comment below please!!!!

In a scientific investigation, hypotheses best are tested through experimentation because the result of the experiment confirms the validation of the theoretical hypothesis formed while framing the problem statement, therefore the correct answer is option B.

Scientific investigation is the process of looking for answers by doing extensive research and finding the answers through experimental results.

The greatest way to test a hypothesis in scientific research is through an experiment since the outcome validates the theoretical hypothesis made while defining the issue statement.

Thus, the correct answer is option B.

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C₇H₁₆+11O₂⇒7CO₂+8H₂O

Answer: Option C. metal

Explanation:

In a single replacement or displacement reaction, metals that are higher in activity series will displace those lower in activity

Perception involves more than just sensory input; it includes interpretation by the brain, as evidenced by the existence of optical illusions, philosophical arguments, and conditions like synesthesia which demonstrate complex brain functions involved in perceiving the world.

The concept that there is more to perception than what our senses can detect is supported by a variety of evidence. It is important to realize that perception is a cognitive process that involves interpreting sensory information, rather than just receiving it passively. The phenomenon of illusions serves as evidence that perception can lead to misinterpretation of sensory inputs. For example, optical illusions often show that what we perceive does not always match the physical reality of what we are sensing, suggesting that our brain is involved in constructing our experiences of the world to a greater degree than we might assume.

Philosophers like Russell and Moore highlight that our beliefs about the world are mediated through and sometimes limited by our sensory experiences, which are subject to error due to limitations or malfunctions in our sense organs or interpretations by the brain. G.E. Moore’s argument about the evidence of a hand existing simply because we can perceive it without further proof is an example of direct realism and points to our reliance on perception for evidence of the external world, yet acknowledges that there is a degree of trust involved in the acceptance of sensory evidence. Furthermore, the concept of homeostasis and allostasis in relation to emotions and reason, shows that our state of mind and body can influence how we interpret sensory information.

Interestingly, the existence of phenomena like synesthesia, where stimulation of one sensory or cognitive pathway leads to automatic, involuntary experiences in a second sensory or cognitive pathway, suggests that perception is not purely a direct function of the senses, but can involve more complex brain functions that combine different types of sensory data into unique perceptual experiences that are not directly linked to the external stimuli.

0.12244898 is the value obtained when solving the given.

Explanation:

Given:

3 times 10 to the 8th power can be expressed in equation format as [tex]3 \times 10^{8}[/tex] (3 times symbolizes ‘multiplication’ then it is to the tenth power of 8)

2.45 times 10 to the 9th power can be expressed in equation format as [tex]2.45 \times 10^{9}[/tex] (2.45 times symbolizes ‘multiplication’, then it is to the tenth power of 9)

Asked to find the solution when dividing the above,

                 [tex]\frac{3 \times 10^{8}}{2.45 \times 10^{9}}=\frac{3}{2.45} \times 10^{8-9}[/tex]

When the tenth power of any value goes from denominator to numerator and vice-versa, presents in opposite sign to that it possess (like when ‘[tex]10^{9}[/tex] ' goes to numerator changed as ' [tex]10^{-9}[/tex] ').

Now by solving the above equation, we get

                [tex]\frac{3}{2.45} \times 10^{8-9}=1.22 \times 10^{-1}=\frac{1.22}{10}=0.12244898[/tex]

Answer:

i) kinetic friction; ii) The friction force always acts in the opposite direction to the movement of the surface where friction exists.

Explanation:

Part i )

At that time the type of friction that exists is kinetic, as there is movement by the wheel. At the moment when the wheel remains in rest over the inclined plane, the friction force which would be used will be the static force.

Part ii)

The friction force always acts in the opposite direction to the movement of the surface where friction exists. It is not opposed to the sense of movement. In order for the wheel to rise on the inclined plane, it must turn to the right, that is to say in the clockwise direction, therefore the friction force must go in the opposite direction to the rotation of the wheel, that is to say, go in the opposite direction to the movement of the surface under friction effect, that is why it points in the same direction of displacement of the wheel.

Final answer:

To find the temperature increase, you can use the formula Q = m * c * ΔT, where Q is the heat energy added, m is the mass of the object, c is the specific heat capacity, and ΔT is the change in temperature. In this case, the temperature increases by 600 °C.

Explanation:

To find the temperature increase, we can use the formula:

Q = m * c * ΔT

where:

In this case, we have:

Using the formula, we can calculate the temperature increase as follows:

ΔT = Q / (m * c)

ΔT = (375,000 J) / (25.0 kg * 0.79 J/g · °C)

ΔT = 600 °C

Therefore, the temperature increases by 600 °C.

Answer:

Acceleration = 3.5 [m/s^2]

Explanation:

We can solve this problem using Newton's second law, which states that the sum of forces on a body is equal to the product of the mass by the acceleration

F = 350 [N]

m = 100 [kg]

Using Newton's second law we have:

F = m*a

where:

F = force [N]

a = acceleration or desacceleration [m/s^2]

therefore:

a = 350/100

a = 3.5 [m/s^2]

A designation of 100000 volts is a need for greater caution. The voltage is a unit of the potential different by which a given amount.

Answer:

A) Earth and the other inner planets have higher average surface temperatures than the outer planets.

Explanation:

the earth and the other inner planets have higher average surface temperatures than the outer planets.

The reason for this response is due to the distance between the sun and the respective planet, the source of energy generation is the sun and the only way in which the temperature increase of each planet is guaranteed is by radiation, the further away a planet is from its star, its temperature will decrease. Although it is also important to highlight the atmospheric composition of the planet if this planet in its stratosphere has high density clouds that do not allow the entry of solar radiation, the temperature of the planet's surface will not increase, independent of the distance from the sun, but these are more complex cases where specialists in that area enter to perform a study in detail.

A. The conclusion is that Earth and the other inner planets have higher average surface temperatures than the outer planets.

The conclusion that can be drawn from the information provided is that Earth and the other inner planets have higher average surface temperatures than the outer planets.

This can be seen by comparing the temperature ranges of the inner planets (Mercury, Venus, Earth, and Mars) with the temperature ranges of the outer planets (Jupiter, Saturn, Uranus, and Neptune). The inner planets have higher average temperatures compared to the outer planets.

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Answer:

Socrates believed that one as a matter of fact must concentrate more on self development than on material things. He encouraged people to engage in developing friendships and love among themselves.

Answer:

B. (Mind and body are inseperable).

Explanation:

Answer:

Sound waves strike a glass and cause it to shatter. This illustrates what phenomenon? the angle at which a wave strikes a reflective medium (the angle of incidence, or theta_i) is equal to the angle at which a wave reflects off the medium (the angle of reflection)