Answers
Answer:
Transition Metals
Explanation:
__________________________
Related Questions
The equation of damped oscillations is given in the form x=0.05e^-0.25sin½πt (m). Find the velocity of an oscillating point at the moments of time: 0, T, 2T, 3T and 4T.
Answers
Explanation:
The logarithmic damping decrement of a mathematical pendulum is DeltaT=0.5. How will the amplitude of oscillations decrease during one full oscillation of the pendulum
A good baseball pitcher can throw a baseball toward home plate at 97 mi/h with a spin of 1540 rev/min. How many revolutions does the baseball make on its way to home plate
Answers
Answer:
10778292789403987593790
Explanation:
I am a Cow'
A constant applied force Fp of 11.0 N pushes a box with a mass=7 kg a distance x=15.0 m across a level floor. The coefficient of kinetic friction between the box and the floor is .110. Assuming the box starts from the rest, what is the final velocity vf of the box at 15.0 m point? If there were no friction between the box and the floor, what applied force Fnew would give the box the same final velocity?
Answers
We have that for the Question " constant applied force Fp of 11.0 N pushes a box with a mass=7 kg a distance x=15.0 m across a level floor. The coefficient of kinetic friction between the box and the floor is .110." it can be said that
the final velocity vf is
\(vf=3.83m/s\)
and the applied force Fnew is
\(F_{new}=3.43N\)
From the question we are told
A constant applied force Fp of 11.0 N pushes a box with a mass=7 kg a distance x=15.0 m across a level floor. The coefficient of kinetic friction between the box and the floor is .110. Assuming the box starts from the rest, what is the final velocity vf of the box at 15.0 m point? If there were no friction between the box and the floor, what applied force F new would give the box the same final velocity?
Generally the equation for the Force is mathematically given as
F_p-\mu mg=ma
Therefore
11-0.110*7*9.8=7*a
a=0.49m/s^2
Using Newtons equation
v^2=u^2+2as
v^2=0+2*0.49*15
v=3.83m/s
Therefore
F=ma
F=0.49*7
F_{new}=3.43N
Therefore
the final velocity vf is
\(vf=3.83m/s\)
and the applied force Fnew is
\(F_{new}=3.43N\)
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The current theory of the structure of the
Earth, called plate tectonics, tells us that the
continents are in constant motion.
Assume that the North American continent
can be represented by a slab of rock 4050 km
on a side and 29 km deep and that the rock
has an average mass density of 2750 kg/m3
The continent is moving at the rate of about
4.8 cm/year.
1)What is the mass of the continent?
Answer in units of kg.
2)What is the kinetic energy of the continent?
Answer in units of J.
3)A jogger (of mass 63 kg) has the same kinetic
energy as that of the continent.
What would his speed be?
Answer in units of m/s.
Answers
The mass of the continent which s represented as a slab of rock of 4050 km on a side and 29 km deep and the rock has an average mass density of 2750 kg/m3 is 1.31 * \(10^{21}\) Kg.
What is kinetic energy?
A moving item or particle might have the power of a certain type called kinetic energy. By applying a net force, an item can perform work, which involves the transfer of energy. As a result, the object accelerates and as a result, gains kinetic energy.
Given:
The side of the slab, a = 4050 km,
The density of slab, d = 2750 kg/\(m^3\),
The depth of the slab, h = 29 km.
Calculate the mass by the following formula,
m = \(V * d\)
Here, m represents mass and V represents volume,
m = 4050 * \(10^3\)* 29 * \(10^3\) * 4050 * \(10^3\) * 2750
m = 1.31 * \(10^{21}\) kg
Therefore, the mass of the continent is 1.31 * \(10^{21}\) kg.
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Candle Wax Melting Point (mp) = 68°c Specific heat Capacity = 291/9°℃ Specific Latent heat of fusion (14) = 220j|g Draw a latent heat Curve for 100grams of Candle wax at 20°C to 68
Answers
The latent heat curve would start at the point of origin on the vertical axis (0J) and at the point corresponding to temperature 20°C on the horizontal axis. The curve will rise linearly, until it reaches 1,409,280 J on the vertical axis and 68°C on the horizontal axis, and will remain constant.
How to reach this result?Find the amount of heat that can heat the candle to 68°C.This will be done with the formula for the amount of heat that is \(\[ Q = m \cdot c \cdot \Delta T \]\)
The "m" stands for grams of candle wax. The "c" represents the specific heat and the ΔT is the temperature change. Substituting the values in the formula we get:
\(Q = 100 \, \text{g} \cdot 291 \, \text{J/g C} \cdot (68^\circ \text{C} - 20^\circ \text{C})\\Q1 = 100 \times 291 \times 48\\Q1 = 1409280 \, \mathrm{J}\)
This calculation shows that the amount of heat required to heat the candle to its melting temperature is equal to 1,409,280 J.
Determine the amount of heat capable of melting the candle wax.We will use the formula:
\($Q = m \cdot L$\)
In this formula, the "m" represents the mass of the candle wax, while the "L" represents the latent heat of melting.
Substituting the formula values we get:
\(Q2 = 100 \, \text{g} \times 220 \, \text{J/g}\\Q2 = 22000 J\)
This tells us that the amount of heat needed to melt the candle is equal to 22,000 J.
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16 of 20:
Select the best answer for the question.
16. What happens to a substance at critical temperatures?
O A. The substance changes its state if it continues gaining or losing thermal energy.
O B. The substance can't lose any more thermal energy.
O C. The substance can't change its state, only its temperature.
O D. The substance changes its state only if it gains thermal energy.
Answers
At the critical temperatures of the substance, the substance can't lose any more thermal energy. Hence, option B is correct.
At the critical temperature, the properties of the liquid and gas phases become difficult to differentiate, and the substance exhibits particular type of behavior such as infinite compressibility and a lack of surface tension.
Additionally, at the critical temperature, the substance reaches its maximum vapor pressure, and any further increase in temperature and pressure will not cause it to change its state but only its density and hence, it cannot lose any more thermal energy from itself.
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How do energy and matter move in ecosystems?(1 point)
Energy and matter flow in one direction.
Matter flows in one direction, and energy cycles through the environment.
Energy flows in one direction, and matter cycles through the environment.
Energy and matter cycle through the environment.
Answers
Answer
Explanation:
Energy flows in one direction,and matter cycle the environment
Energy flows in one direction and matter cycles through the environment in an ecosystem.
What is an ecosystem?
Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.
Energy enters the system through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.There are many ecosystems present in the environment.
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To pass a vehicle inspection, your Must be heard from 200 feet away.
Ohorn
Omuffler
windshield wipers
stereo
Answers
A I think sorry if I'm wrong
What kind of energy does the skier have at the top of the slope?
Answers
Potential energy is the energy that the skier have at the top of the slope as there will be a equillibrium which means zero velocity and maximum height.
The skier has potential energy at the top of the slope, which he will primarily transform into kinetic energy as he descends the hill. His body and the air, as well as his skis and the snow, will cause some of his PE to be transformed into thermal energy.
The ski lift, which elevated him against gravity, gave him his PE. In an electric motor, the lift transformed electrical energy into kinetic energy. A little portion of this energy was also converted to heat energy by friction in all of the moving elements.
The first law of thermodynamics is exemplified by the energy transformations. Examples of the second law include the losses caused by thermal energy diffusion.
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in a command economy, which group is most responsible for producing the goods for people in society need
Answers
In a command economy, the government is responsible for producing the goods that people need.
In a command economy, what does the government accomplish?
The production and distribution of goods and services are directed and regulated by the government in a command economy. The prices at which these goods and services are sold are set by the government, which also controls and manages the production and supply of these goods and services.
The government also decides what will be produced in terms of goods and services as well as how resources will be distributed. The majority of the resources and businesses are owned by the government, which also sets production targets and determines how they will be achieved.
The government also sets the wage rate and manages the flow of money, including the interest rate. Additionally, the government offers its citizens basic services like health care and education.
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give the relationship between current, Resistance and potential difference
Answers
Explanation:
Current can be defined as the rate of flow of electric charge along a conductor.
Resistance can be defined as the opposition to the flow of charged electrons or current, it's unit is OhmA small 8.00 kg rocket burns fuel that exerts a time-varying upward force on the rocket (assume constant mass) as the rocket moves upward from the launch pad. This force obeys the equation F=A+Bt2. Measurements show that at t=0, the force is 100.0 N, and at the end of the first 2.00 s, it is 162.0 N.
A. Find the net force on this rocket at the instant after the fuel ignites.
B. Find the acceleration of this rocket at the instant after the fuel ignites.
C. Find the net force on this rocket 3.00 ss, after the fuel ignites.
D. Find the acceleration of this rocket 3.00 ss, after fuel ignition.
E. Suppose that you were using this rocket in outer space, far from all gravity. What would its acceleration be 3.00 ss, after fuel ignition?
Answers
a) The net force at the point of fuel ignition is F = A = 100 N.
b) Acceleration after fuel ignites is a = 12.5 m/s^2
c) The net force on the rocket at t=3.00 s is 403 N.
d) Acceleration of rocket 3.00 ss after fuel ignites is a = 50.4 m/s^2
e) Acceleration in outer space is a = 50.4 m/s^2
How the solution was obtainedA. The force at t=0 is given as 100 N, so A = 100 N. We can use the given information to find B:
F = A + Bt^2
162 N = 100 N + B(2.00 s)^2
B = (162 N - 100 N) / (2.00 s)^2
B = 31 N/s^2
Therefore, the net force on the rocket at t=0 is:
F = A = 100 N.
B. The acceleration of the rocket is given by Newton's second law:
F_net = ma
where F_net is the net force acting on the rocket, and a is the acceleration of the rocket. At t=0, the net force on the rocket is 100 N. Therefore, the acceleration of the rocket at t=0 is:
a = F_net / m
a = 100 N / 8.00 kg
a = 12.5 m/s^2
C. To find the net force on the rocket at t=3.00 s, we can simply plug in t=3.00 s into the force equation:
F = A + Bt^2
F = 100 N + 31 N/s^2 (3.00 s)^2
F = 403 N
Therefore, the net force on the rocket at t=3.00 s is 403 N.
D. To find the acceleration of the rocket at t=3.00 s, we can use the same equation as in part B:
F_net = ma
At t=3.00 s, the net force on the rocket is 403 N. Therefore, the acceleration of the rocket at t=3.00 s is:
a = F_net / m
a = 403 N / 8.00 kg
a = 50.4 m/s^2
E. In outer space, far from all gravity, the only force acting on the rocket is the force from the burning fuel. Therefore, the net force on the rocket is simply the force from the burning fuel:
F = A + Bt^2
F = 100 N + 31 N/s^2 (3.00 s)^2
F = 403 N
Using the same equation as in part B, the acceleration of the rocket is:
a = F_net / m
a = 403 N / 8.00 kg
a = 50.4 m/s^2
Therefore, the acceleration of the rocket in outer space would be the same as in part D.
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Consider a regular solution, for which energy
w =5 kJ/mol
At what temperature, in K, will a miscibility limit emerge?
Answers
At room temperature,300 K, will a miscibility limit emerge. At the temperature less than, the miscibility will fall below 1%.
What is temperature?Temperature directs the hotness or coldness of a body. In clear terms, it is the method of finding the kinetic energy of particles within an entity. Faster the motion of particles, more the temperature.
Hence, at room temperature,300 K, will a miscibility limit emerge. At the temperature less than, the miscibility will fall below 1%.
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what are crystalline substances in physics
Answers
In physics, crystalline substances refer to materials that possess a well-defined, ordered atomic or molecular structure.
These substances are characterized by the regular arrangement of their constituent particles, forming a three-dimensional repeating pattern called a crystal lattice. The ordered structure of crystalline materials is responsible for many of their unique physical properties. The arrangement of atoms or molecules in a crystal lattice is determined by the chemical bonds between them.
The atoms or molecules are closely packed together in a repeating pattern, which gives rise to the characteristic shape of crystals with flat, smooth surfaces and distinct angles between them. Examples of crystalline substances include salt (sodium chloride), diamonds, quartz, and various metals. Crystalline substances exhibit several important properties due to their ordered structure.
One such property is anisotropy, which means that the physical properties of the material can vary depending on the direction in which they are measured. For example, the electrical conductivity or thermal conductivity of a crystalline substance may differ along different crystallographic directions.
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A sample of vegetable oil with density 913 kg/m3 is found to have a mass of 0.0365 kg. Find the volume of this sample
Answers
The volume of the vegetable oil is 0.00003998 m³.
The density of vegetable oil,
ρ = 913 kg/m³
The mass of vegetable oil,
m = 0.0365 kg
To find: The volume of the vegetable oil, V Solution: The density of any substance is defined as the mass of the substance per unit volume.
The formula for density is:
ρ = m/V
where, ρ is the density of the substancem is the mass of the substance V is the volume of the substance We can rearrange the above formula to find the volume of the substance:
V = m/ρSubstituting the given values of mass and density in the above formula,
We get:
V = 0.0365 kg / 913 kg/m³ = 0.00003998 m³ (approx)
Therefore, the volume of the vegetable oil is approximately 0.00003998 m³.
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the choice of materials for an exciting playground slide should ___.
A. have a large coefficient of kinetic friction between cloth and the slide material.
B. have a small coefficient of kinetic friction between cloth and the slide material.
C. have a large coefficient of static friction between cloth and the slide material
D. have a small coefficient of static friction between cloth and the slide material.
Answers
The choice of materials for an exciting playground slide should have a small coefficient of kinetic friction between cloth and the slide material.
A playground slide is always present in schools, parks and other recreational areas. Children slide down the set up to catch fun.
One thing that must be kept in mind is that the kinetic friction between a cloth and the playground slide material must be kept low so that children can be able to slide down the st up.
Therefore, the choice of materials for an exciting playground slide should have a small coefficient of kinetic friction between cloth and the slide material.
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A machine works with an efficiency of 20%. The energy input is 200 joules/second. How
much useful energy will the machine generate in 10 minutes?
A. 36 kJ
B. 24 kJ
C. 40 kJ
D. 600 kJ
Answers
The quantity of useful energy which this machine would generate in 10 minutes is equal to: B. 24 kJ.
How to determine the efficiency of a machine?Mathematically, energy efficiency can be calculated by using this formula:
Energy efficiency = WO/WI × 100
Where:
WO represents the output energy.WI represents the input energy.For the output energy, we have:
20 = WO/200 × 100
4000 = 100WO
Output energy, WO = 4000/100
Output energy, WO = 40 joules/second.
Note: A minute is equal to 60 seconds.
In 10 minutes, the time is given by:
10 minutes = 10 × 60
10 minutes = 600 seconds.
Now, we can determine the useful energy generated by this machine:
Useful energy = 40 joules/second × 60 seconds
Useful energy = 24,000 Joules or 24 Kilojoules (24 kJ).
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The cubit is an ancient unit. Its length equals six palms. (A palm varies from 2.5 to 3.5 inches depending on the individual.) We are told Noah's ark was 300 cubits long, 50 cubits wide, and 30 cubits high. Estimate the volume of the ark (in cubic feet). Assume the ark has a shoe-box shape and that 1 palm = 3.50 inch.
Answers
The volume of the ark is 11163 cubic feet.
What is the volume of Noah's ark?The term volume of a box refers to the product of the length, width and height of the box. We have been told that the ark of Noah could be likened to a box and we have been asked to obtain its volume.
Hence;
width = 3.5 * 50 = 175 inches or 14.58 feet
length = 300 * 3.5 = 1050 inches or 87.5 feet
height = 30 * 3.5 = 105 inches or 8.75 feet
Volume of the ark = 14.58 feet * 87.5 feet * 8.75 feet
Volume of the ark = 11163 cubic feet
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A chemical system is considered to have reached dynamic equilibrium when:__________.
a. the frequency of collisions between the reactant molecules is equal to the frequency of collisions between the product molecules.
b. the rate of production of each of the product species is equal to the rate of consumption of each of the reactant species. c. the rate of production of each of the products is equal to the rate of their consumption by the reverse reaction.
d. the sum of the concentrations of each of the reactant species is equal to the sum of the concentrations of each of the product species.
e. the activation energy of the forward reaction is equal to the activation energy of the reverse reaction.
Answers
Answer:
D
Explanation:
Sum of the concentrations of each of reactant species is equal to the sum of the concentrations of each of the product species
if a rock sample has mass of 11.2g and a volume of 1.9cm3 what type of rock is it?
Answers
the given rock is Cubic Zirconia.
given:
mass of the substance = 11.2g
volume of the substance =9cm³
Cubic Zirconia has a density -
5.5g/cm ³- 5.9 g/cm³
Here we will try to find the density of the given substance and compare it with the density of Cubic Zirconia .
we know that,
mass = density × volume
m=p×V
so,
density = mass/volume
on substituting value we get
density = 11.6/1.9
=6.1 g/cm³
which is approximately equal to 5.9 and therefore the rock is Cubic Zirconia.
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how much force does she hit the ball with ?
Answers
The amount of force on the ball of mass 0.045 kg is 202.5 N.
What is force?Force is the product of mass and acceleration.
To calculate the force she hit the ball with, we use the formula:
Formula:
F = m(v-u)/t....................... Equation 1Where:
F = Force on the ballm = Mass of the ballv = Final velocity of the ballu = Initial velocity of the ballt = TimeFrom the question,
Given:
m = 0.045 kgv = 27 m/su = 0 m/st = 0.006 secondsSubstitute these values into equation 1
F = 0.045(27-0)/0.006F = 202.5 NHence, the force on the ball is 202.5 N.
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In hiking, what fitness component is required of you
Answers
Which of these can help determine air pressure? Select the two correct answers.(1 point)
a. wind speed of the air
b. moisture in the air
c. temperature of the air
d. cloud patterns in the air
Answers
Answer:
Which of these can help determine air pressure? Select the two correct answers.(1 point)
a. wind speed of the air
b. moisture in the air
c. temperature of the air
d. cloud patterns in the air
Explanation:
hope this helps :)
Wind speed of the air and temperature of the air are the two correct options that can can help to determine air pressure.
(options a and c)
This is so because the number of molecules above a surface determines air pressure. Interestingly, as the number of molecules increases, they exert more pressure on a surface, and the total atmospheric pressure increases. By contrast, if the number of molecules decreases, so too does the air pressure.
Recall: The temperature of the gas is proportional to the average kinetic energy of its molecules. Faster moving particles will collide with the container walls more frequently and with greater force.
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Water waves are waves because the wave moves up and down. transverse longitudinal
Answers
Answer:
it is transverse because longitudinal run lengthwise rather than across
hoped this helped lmk if it did
A circular ferris wheel that revolves at a constant rate once every 30 seconds. The
radius of the ferris wheel is 10 m. What is the normal force of the ferris wheel on a 10
kg toddler at the very bottom of the ferris wheel?
Answers
The normal force of the ferris wheel on a 10kg toddler at the very bottom of the ferris wheel is 102.41 N.
Centripetal force of the Ferris wheelThe normal force of the ferris wheel on a 10kg toddler at the very bottom of the ferris wheel is calculated as follows;
Fn = Fc + mg
Fn = mω²r + mg
where;
ω is the angular speed = 1 rev/30 s = 2π/30 s = 0.21 rad/sFn = 10(0.21²) 10 + 10(9.8)
Fn = 102.41 N
Thus, the normal force of the ferris wheel on a 10kg toddler at the very bottom of the ferris wheel is 102.41 N.
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Which of the following best describes an ion? A. an electron B. an atom that is neutral C. an atom that is charged
Answers
Answer: An ion is an atom with a net positive or negative charge due to an unequal number of protons and electrons
A large mining dump truck has a mass of 40,000 kg. If its engine produces
20,000N of force, how fast will the truck accelerate?
Answers
Answer:
0.5 m/s²
Explanation:
Net force = mass × acceleration
∑F = ma
20,000 N = (40,000 kg) a
a = 0.5 m/s²
Answer:
which one will not start moving faster
Explanation:
Mass is also described by physics. If you apply the same amount of force to a small sports car and to a big garbage truck.
Mathias is going to do some informational interviewing. What is one of the main benefits of doing these interviews?
O A.
OB.
O C.
O D.
A.He will gain insight about a new career opportunity.
B.He will likely be offered a position with a company.
C.He will be able to ask questions about job openings.
D.He will find out how much money everyone earns.
Answers
Answer:
A
Explanation:
One of the main benefits of informational interviewing is that it allows the person conducting the interviews to gain insights and information about a particular career or industry.
A system has two possible energy states, E0 and E1 (with E1 > E0). If the difference between these energy states grows (E0 and E1 get further apart while the temperature stays constant), then the ratio of the number of particles in state E0 over the number of particles in state E1 will:__________
Answers
Answer:
The number of particles in state E0 over the number of particles in state E1 will reduce
Explanation:
E0 represents the ground level state when all the particles have same energy level.
E1 represents excited state in which only a few particle reaches
E0 and E1 get further apart means that the energy difference between the two level increases.
Thus, the number of particles in state E0 over the number of particles in state E1 will reduce.
Use the momentum equation for photons found in this week's notes, the wavelength you found in #3, and Planck’s constant (6.63E-34) to calculate the momentum of this photon:
Answers
The wavelength is divided by Plank's constant to get the momentum equation for photons: p = h /λ.
What is photon?The electromagnetic force is carried by a photon, a basic particle that is a quantum of the electromagnetic field and includes electromagnetic radiation like light and radio waves. Since photons have no mass, they constantly move at the 299792458 m/s speed of light in a vacuum.
Assuming the wavelength determined in a prior issue, = 656 nm = 656 * 10 - 9 m, you get:
p = (6.63 * 10 ^-34) / (656 * 10 ^ -9) kg * m/s
P, which must be rounded to three significant numbers, is equal to 1.01067 * 10 - 27 kg*m/s.
Consequently, p = 1.01 * 10 -27 kg*m/s
Our number, rounded to two significant figures, is 1.0 * 10 - 27 kg*m/s because the answers are only rounded to two significant values.
Therefore, given that the wavelength is 656 nm, the first option—1.0*10-27 kg*m/s—is the correct response.
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