You're talking about a grain of sand or a stone or a rock that's drifting in space, and then the Earth happens to get in the way, so the stone falls down to Earth, and it makes a bright streak of light while it's falling through the atmosphere and burning up from the friction.
-- While it's drifting in space, it's a meteoroid.
-- While it's falling through the atmosphere burning up and making a bright streak of light, it's a meteor.
-- If it doesn't completely burn up and there's some of it left to fall on the ground, then the leftover piece on the ground is a meteorite.
the boundary between tectonic plates that are moving toward each other
Answer:
A divergent boundary is the answer
Explanation:
what type of test charge do we use for an electrical field ?
Answer:
A positive charge with very small charge compared to the charge source of the field
Explanation:
Let's consider an electric field produced by a source charge Q.
In order to test the direction and magnitude of the electric field, we use a positive test charge q. The reason for chosing a positive charge is that a positive charge will move following the directions of the electric field lines (in fact, the positive charge will be repelled from charge Q if charge Q is positive, so it will follow the electric field lines, which point away from the charge).
Moreover, the test charge q must be small compared to charge Q. This is because we don't want to modify significantly the configuration of the electric field, so the test charge q must be negligible compared to charge Q.
a baseball with a mass of 0.15 kg is moving at a speed of 40.0 m/s. What is the baseball's kinetic energy from this motion?
Answer:
The baseball's kinetic energy is 120 joules.
Explanation:
The kinetic energy is defined as:
[tex]k_{e} = \frac{1}{2}mv^{2}[/tex] (1)
Where [tex]k_{e}[/tex] is the kinetic energy, m is the mass and v is the velocity.
The kinetic energy represents how much energy have an object as a consequence of its movement.
For the case of a baseball (m = 0.15 kg, v = 40.0 m/s):
[tex]k_{e} = \frac{1}{2}(0.15kg)(40.0m/s)^{2}[/tex]
[tex]k_{e} = 120 Kg.m^{2}/s^{2}[/tex]
But 1 j = [tex]kg.m^{2}/s^{2}[/tex]
[tex]k_{e} = 120 j[/tex]
Hence, baseball's kinetic energy is 120 joules.
a rocket is fired vertically from the ground.it moves upwards with a constant acceleration 10m/s square for 30 seconds after which the fuel is finished.after what time from the instant of the firing of the rockets will attain maximum height?,find the maximum height it rraches above the ground and total time the rockrt will stay above the ground.
Answer:
9090 m, 104 s
Explanation:
After the acceleration phase, the rocket reaches a height of:
x = x₀ + v₀ t + ½ at²
x = (0 m) + (0 m/s) (30 s) + ½ (10 m/s²) (30 s)²
x = 4500 m
And it reaches a velocity of:
v = at + v₀
v = (10 m/s²) (30 s) + (0 m/s)
v = 300 m/s
After the fuel runs out, the rocket goes into free fall. The maximum height reached is:
v² = v₀² + 2a(x - x₀)
(0 m/s)² = (300 m/s)² + 2(-9.8 m/s²)(x - 4500 m)
x ≈ 9090 m
The time to reach maximum height during free fall:
v = at + v₀
0 m/s = (-9.8 m/s²) t + (300 m/s)
t ≈ 30.6 s
And the time to land from the maximum height:
x = x₀ + v₀ t + ½ at²
0 m = (9090 m) + (0 m/s) t + ½ (-9.8 m/s²) t²
t ≈ 43.1 s
So the total time is:
t = 30 s + 30.6 s + 43.1 s
t ≈ 104 seconds
if Luke pushes with 22 N of force on the wagon that is now filled with bricks but he cannot make you move how much work did Luke do
Answer: He did none.
Explanation:
Even though he may have felt like he did work, none was done.
The only way for work to happen is if the object moves.
Answer:
Zero
Explanation:
Work done on an object is defined as the product of force applied on an object and the distance traveled by the object due to the applied force. here the force applied is in the direction of force.
Generally,
Work = force in the direction of displacement x displacement
Here, the displacement is zero
so, the work done by Luke to push the wagon is zero.
All solids above 1000 K begin to emit radiation in what range on the electromagnetic scale?
radio
infrared
visible Light
ultraviolet
Answer:
Infrared
Explanation:
Wien's displacement law states that the peak wavelength of the radiation emitted by an object is given by
[tex]\lambda=\frac{b}{T}[/tex]
where
[tex]b=2.898\cdot 10^{-3} m\cdot K[/tex] is the Wien's displacement constant
T is the absolute temperature of the object
In this problem,
T = 1000 K
So the peak wavelength of the radiation emitted by the body is
[tex]\lambda=\frac{2.898\cdot 10^{-3} m\cdot K}{1000 K}=2.90\cdot 10^{-6} m = 2.90 \mu m[/tex]
And this corresponds to infrared radiation, whose range of wavelength is 700 nm - 1 mm.
Answer:
The correct answer is visible light.
Explanation:
Which plate borders the Philippine plate
A African
B antártic
C Eurasian
D North American
The Philippine Sea plate is tectonically unusual in that almost all the boundaries are convergent.
The Pacific plate is subducting beneath the Philippine Sea plate to the east while the west/northwestern part of the Philippine Sea plate is subducting beneath the continental Eurasian plate.
Answer: Eurasian
Eurasian plate borders the Philippine plate. The correct option is C.
What is Philippine plate?The Philippine Sea plate has all the boundaries convergent. It is a plate that lies below the lithosphere.
The Pacific plate is shifting beneath the Philippine Sea plate to the east. The west of the Philippine Sea plate is shifting beneath the continental Eurasian plate.
Thus, Eurasian plate borders the Philippine plate. The correct option is C.
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Identify the form of energy that matches each example. Energy from electromagnetic waves: Energy caused by changes in the structure of a nucleus: Energy resulting from movement and vibration of molecules: Energy an object has because of its position:
Electromagnetic waves carry energy in the form of photons. Nuclear energy is released during changes in the structure of a nucleus. Thermal energy is the result of movement and vibration of molecules. Potential energy is associated with an object's position.
Explanation:Energy from electromagnetic waves: Electromagnetic waves, such as light, carry energy in the form of photons. These waves can be used to transfer energy and gather information. For example, sunlight carries energy from the sun to the Earth, which can be used for photosynthesis in plants.
Energy caused by changes in the structure of a nucleus: Nuclear energy is released when the structure of a nucleus changes, such as in nuclear fission or fusion reactions. This energy is used in nuclear power plants to generate electricity.
Energy resulting from movement and vibration of molecules: Thermal energy, also known as heat energy, is the energy resulting from the movement and vibration of molecules. It is a form of kinetic energy and is responsible for temperature changes and heat transfer.
Energy an object has because of its position: Potential energy is the energy an object possesses due to its position or condition. For example, a raised object has gravitational potential energy, and a compressed spring has elastic potential energy.
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The examples correspond to Radiant Energy (energy from electromagnetic waves), Nuclear Energy (energy caused by changes in a nucleus), Thermal Energy (energy resulting from movement and vibration of molecules), and Potential Energy (energy an object has because of its position).
Explanation:For the given examples, the corresponding forms of energy are:
Energy from electromagnetic waves refers to Radiant Energy. Energy caused by changes in the structure of a nucleus refers to Nuclear Energy. Energy resulting from movement and vibration of molecules refers to Thermal Energy. Energy an object has because of its position refers to Potential Energy.
These are the major types of energy that correspond to the scenarios described in your question. Each of these forms plays a vital role in different physical and biological systems.
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Which best describes hooke’s equation?
Answer:
B.
The explanation of the relationship between load and extension is not in Hooke's Law.
Explanation:
Answer:
theory
Explanation:
I just took the test! hope this helps!
The table shows data related to the planet Saturn. Which data is essential to find the length of a year on Saturn?
Answer:
period of orbit around sun ! thats a saturn year
Explanation:
A quality that has magnitude only is a
scaler quantity has magnitude only for example mass ,speed,distance,electric current
The Mass number of an element is the?
A. number of protons plus electrons
B.number of protons only
C. number of protons plus neutrons
Answer:
The mass number of an element is the number of protons plus neutrons.
Explanation:
The mass number of an element is the number of protons plus neutrons, so the correct answer is the option C.
The mass number of an element is the sum of the number of protons plus neutrons.
Answer: Option C
Explanation:
The element's mass number refers to the summative number of neutron and proton in the nucleus. In the nucleus there is the total number of protons and neutron, summed together to form the atomic mass.
Atomic mass is similar as the mass number in representation. Therefore, we have the following formula for the mass number,
Mass number of an element=Number of protons+Number of neutrons
Which is an important step in how an electric motor uses magnetic force to produce motion?
A) As the north pole of the electromagnet nears the north pole of the permanent magnet, the current reverses and the poles of the magnets then attract.
B) As the north pole of the electromagnet nears the south pole of the permanent magnet, the current reverses and the poles of the magnets then repel.
C) As the north pole of the electromagnet nears the north pole of the permanent magnet, the current reverses and the poles of the magnets then repel.
D) As the north pole of the electromagnet nears the south pole of the permanent magnet, the current reverses and the poles of the magnets then attract.
Answer:B.As the north pole of the electromagnet nears the south pole of the permanent magnet, the current reverses and the poles of the magnets then repel.
Explanation:
Answer:
B) As the north pole of the electromagnet nears the south pole of the permanent magnet, the current reverses and the poles of the magnets then repel.
Explanation:
As we know that electric motor is based on the concept of torque due to magnetic field on current carrying coil.
Here as the current is passing through the coil the torque on the coil is given as
[tex]\tau = NiAB sin\theta[/tex]
so here the magnetic field due to coil will continuously repelling the current carrying coil as it will move between the magnetic field so direction of current in the coil will change continuously so that it will always repel by the magnetic field and continuously rotated between the magnets
An adiabatic process is performed on 15 moles of an ideal gas (γ = 1.44). What is the heat capacity at constant pressure for the gas? Let the ideal-gas constant R = 8.314 J/(mol • K).
25 J/(mol • K)
27 J/(mol • K)
31 J/(mol • K)
23 J/(mol • K)
29 J/(mol • K)
Answer:
27 J/(mol • K)
Explanation:
γ = Cp / Cv
We're given γ and we need to find Cp (heat capacity at constant pressure) per mole. First we need to find Cv (heat capacity at constant volume). Cv is defined as:
Cv = Cp − nR
where n is the number of moles and R is the ideal gas constant.
So:
γ = Cp / (Cp − nR)
γ (Cp − nR) = Cp
γ Cp − γnR = Cp
(γ − 1) Cp = γnR
Cp / n = γR / (γ − 1)
Given γ = 1.44 and R = 8.314 J/mol/K:
Cp / n = (1.44) (8.314 J/mol/K) / (1.44 − 1)
Cp / n = 27 J/mol/K
Decribe the relationship between kinetic energy and speed
Every moving object has kinetic energy.
The kinetic energy a moving object has is
(half of its mass)
multiplied by
(the square of its speed).
which of the following is an example of a main sequence star
I know this question is old but it still needed an answer :-) hope this helps anyone who needs it!
Which of the three subatomic particles is responsible for determining the reactivity of an element?
The electron is the subatomic particle that determines an element's reactivity, with the configuration of the outermost or valence shell playing a key role in how readily an element undergoes chemical reactions.
Explanation:The subatomic particle responsible for determining the reactivity of an element is the electron. The electrons in the outermost subshell, or valence shell, have the most significant interaction with other atoms, as they are farthest from the nucleus. An element is chemically reactive if its valence shell can easily accept or give up electrons. For instance, noble gases like helium and neon have a full valence shell and are very stable—they do not react easily due to their high ionization energies and unwillingness to accept an additional electron. On the other hand, elements like hydrogen have an incomplete valence shell, making them more reactive as they seek stability through reactions with other elements.
How did the appearance of the smallest creatures, such as the microbes and bacteria, in Earth's early history impact the geosphere?
A)
formation of rocks
B)
enriching the soil
C)
decreased moisture
D)
caused land erosion
B) Enriching the soil.
Hope this helps.
I believe the answer is B) enriching the soil. Bacteria converts energy in would organic matter into forms useful to the rest of the organization in the soil food web.
If the speed of an object is unchanging, then what must be true?
The object is traveling at an average speed.
The object is traveling at a constant speed.
The object is traveling at a decreasing velocity.
The object is traveling at an increasing velocity
Answer:
If the speed of an object is unchanging it means that it's traveling at a constant speed.
If the speed of the object increases or decreases it means that the speed is changing. That's why those options are not valid.
The average speed implies that the speed changes over time, but just the average remains the same. That's why this option is not valid.
If the speed of an object is unchanging, then the object is traveling at a constant speed.
"Unchanging" and "constant" mean the same thing.
If a patient is receiving home care services this means they have a terminal illness true or false
False. Receiving home care services does not necessarily mean that a patient has a terminal illness.
Terminal illness and homecare services
Home care services are not exclusively for those with terminal illnesses; they cater to various needs.
These services extend beyond end-of-life care, encompassing chronic illness management, post-surgery recovery, palliative care, and support for the elderly.
Home care facilitates personalized healthcare delivery in the comfort of one's residence, promoting independence and enhancing the quality of life.
It is a flexible approach that addresses diverse medical conditions, allowing individuals to receive necessary assistance tailored to their unique health requirements.
Home care services do not exclusively mean a patient has a terminal illness. Home care can include hospice services for those with terminal illnesses, but it also caters to a range of other patient needs, such as recovery and long-term support. Hospice care provides comfort for terminally ill patients, often in their homes. The statement in the question is not true.
Explanation:If a patient is receiving home care services, it does not necessarily mean they have a terminal illness. While it is true that hospice care is often associated with terminal illnesses and focuses on providing comfort and support rather than cure-oriented treatments, home care can encompass a variety of services for patients with varying needs, including recoveries from surgeries, chronic illnesses, disability support, and more community-based, long-term care. Hospice care, specifically, supports terminally ill patients and their families by offering pain management, emotional support, and the opportunity for the patient to be in the comfort of their own home. However, not all patients in home care are in hospice or have terminal illnesses.
the ability of an organism to maintain a stable internal environment even when the external environment changes
Answer:
homeostasis!
Explanation:
A cyclist travels at a constant velocity of 3.2m/s westward, then speeds up with a steady acceleration of 2.3m/s^2. Calculate the cyclist’s speed after accelerating for 5.0 s.
*also tell how to work out problem*
Answer:
14.7 m/s
Explanation:
In this problem we have
u = 3.2 m/s is the initial velocity of the cyclist
a = 2.3 m/s^2 is the acceleration of the cyclist
We want to know the cyclist speed after a time of
t = 5.0 s
So we can use the following equation:
[tex]v=u+at[/tex]
Substituting the numbers, we find
[tex]v=3.2 m/s + (2.3 m/s^2)(5.0 s)=14.7 m/s[/tex]
whats the role of the suns gravity in the solar system
The suns gravity pulls on the planets and keeps them in place. Its gravitational pull puts them in orbit around the sun
The role of the sun's gravity is to keep the planets in place.
What is the sun's gravity?The Sun has multiple roles in every Earth's space operations.The Sun provides the gravitational force to the solar system. Its gravitational pull keeps all the planets in their respective orbits. Every planet that is revolving around the sun is due to its gravitational effect.The sun produces a lot of electromagnetic radiation and the sun's rays are full of radioactivity.And the solar wind from the sun can be used by spacecraft for mobility.To learn more about the sun's gravity refer to:
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Over a span of 6.0 seconds, a car changes its speed from 89 km/h to 37 km/h. What is its average acceleration in meters per second squared (m/s2)?
Answer: Average acceleration is -2.407 [tex]\frac{m}{s^{2}}[/tex]
Explanation:
Average acceleration is equal to change in velocity divided by time taken
therefore, [tex]a=\frac{Vf-Vi}{t}[/tex]
=> [tex]a=\frac{37-89}{6}\times \frac{5}{18}\frac{m}{s^{2}} = -2.407 \frac{m}{s^{2}}[/tex]
An object is traveling in a circular motion at constant speed. If the speed is doubled, the centripetal acceleration is changed by a factor of
Answer: the centripetal acceleration is changed by a factor of four
Explanation: An object moving in a circular motion at constant speed has zero tangential acceleration but the direction of the tangential velocity vector changes as the object rotates. This change in direction of the tangential velocity vector results in centripetal acceleration ([tex]a_c[/tex]) given by
[tex]a_c=\frac{v^{2}}{r}[/tex]
where v=speed of object , r= radius of circular path
Thus if [tex]v_2=2v_1[/tex] then
[tex]a_2=\frac{v_2^{2}}{r_2}=\frac{(2v_1)^{2}}{r_1}=4\times \frac{v_1^{2}}{r_1}=4a_1[/tex]
Thus If the speed is doubled, the centripetal acceleration is changed by a factor of four .
Final answer:
The centripetal acceleration will increase by a factor of 4 when the speed of an object in circular motion is doubled, because centripetal acceleration is proportional to the square of the velocity.
Explanation:
An object is traveling in circular motion at constant speed. When the object's speed is doubled, its centripetal acceleration is affected significantly because the acceleration in circular motion is directly proportional to the square of the velocity. The formula for centripetal acceleration (ac) is ac = v² / r, where v is the speed of the object and r is the radius of the circular path.
Since the relationship is quadratic, if you double the speed (v becomes 2v), the new acceleration will become (2v)² / r = 4v² / r. This shows that the centripetal acceleration will increase by a factor of 4, which is the square of the factor by which the speed is increased.
A car travels 300 meters in 15 seconds. What is
the average velocity of the car?
A.
5.0 m/sec
B.
15 m/sec
C.
20 m/sec
D. 30 m/sec
C; to get the unit rate or the time it travels per second you divide the total amount traveled by the amount it took to travel. 300/15=20 20•15=300
The average velocity of the car is: C. 20 m/sec.
Given the following data:
Distance traveled = 300 meters.Time = 15 seconds.To find the average velocity of the car:
Mathematically, average velocity is calculated by using the formula;
[tex]Average \; velocity = \frac{Total \; distance}{Total \; time}[/tex]
Substituting the given parameters into the formula, we have;
[tex]Average \; velocity = \frac{300}{15}[/tex]
Average velocity = 20 meters per seconds.
Therefore, the average velocity of the car is 20 meters per seconds.
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When does total internal reflection occur?
A. when the angle of incidence exceeds the angle of reflection
B. when the angle of incidence is less than the angle of reflection
C. when the angle of incidence is less than the critical angle
D. when the angle of incidence exceeds the critical angle
PLEASE GIVE A STRAIT ANSWER PLEASE
Answer:
A
Explanation:
I believe it is A because reflection is usually like a mirror or in water the other ones described are refraction or conversion. Hope this helps! :)
Which describes a reflected image in a plane mirror?
A. The image is upside-down and about as far away from the mirror as the reflected object.
B. The image is right-left reversed and about as far away from the mirror as the reflected object.
C. The image appears right side up and larger than the reflected object.
Answer:
B. The image is right-left reversed and about as far away from the mirror as the reflected object.
Explanation:
A plane mirror is used in several ways in our life, from the mirror that we have on the bathroom to the mirrors we use on cars, the main difference is that the mirror reflects the image reversed on the Vertical axis, which means that the left is the right and the right is the left, a mirror also protrays objects at a certain distance, about as far away from the mirror as the reflected object but they are actually closer in real life.
Answer:
B. The image is right-left reversed and about as far away from the mirror as the reflected object.
A blender with a total resistance of 6 ohms runs on a voltage of 190 volts. How much current does it use? NEED TO KNOW ASAP PLEASE HELPPPPP
The answer is 31.67 Amps.
Why?To solve the problem, we need to use Ohm's Law equation, which states that:
[tex]V=IR[/tex]
Where,
V, is the voltage (in volts)
I, is the current (in Amps)
R, is the resistance (in Ohms)
We are given the following information:
[tex]Voltage=190v\\Resistance=6\Omega\\[/tex]
So, using Ohm's Law equation and substituting the given information, we have:
[tex]V=IR\\\\190v=I*6\Omega\\\\I=\frac{190v}{6\Omega}=31.67Amps[/tex]
Hence, we have that the current used by the blender is 31.67Amps.
Have a nice day!
Raw data often appears in published scientific journals. Please select the best answer from the choices provided T F
Answer: The correct answer is False.
Explanation: The term "raw data" refers to the data that has not been processed or "clean" for use. A scientific journal is a type of publication that specializes in publishing new researches of the scientific field. These researches contain information, that is considered the end product of processing the raw data. It is most likely that raw data would not be used as it comes in published scientific articles.
Answer: It's false
Explanation:
I got it right on edge.