Answer:
The final position made with the vertical is 2.77 m.
Explanation:
Given;
initial velocity of the ball, V = 17 m/s
angle of projection, θ = 30⁰
time of motion, t = 1.3 s
The vertical component of the velocity is calculated as;
[tex]V_y = Vsin \theta\\\\V_y = 17 \times sin(30)\\\\V_y = 8.5 \ m/s[/tex]
The final position made with the vertical (Yf) after 1.3 seconds is calculated as;
[tex]Y_f = V_yt - \frac{1}{2}g t^2\\\\Y_f = (8.5 \times 1.3 ) - (\frac{1}{2} \times 9.8 \times 1.3^2)\\\\Y_f = 11.05 \ - \ 8.281\\\\Y_f = 2.77 \ m[/tex]
Therefore, the final position made with the vertical is 2.77 m.
A car has an acceleration of 1.5 m/s2. A net force of 2100 N is acting on the car. What is the mass of the car?
Answer:
Given
acceleration (a) =1.5ms2
Force(F) =2100N
R. t. c mass (m) =?
Form
F=ma(divided by m both sides)
m=F/a
m=2100/105
m=1400kg
mass of car =1400kg
Answer:1400kg
Explanation:
TEST: Circuit---2/25/21
All of the following apply to an electric current, except:
Visible light waves do not diffract as well as radio waves because?
Answer:
because the wavelength of the light waves are too small
Explanation:
as speed (velocity) increases, potential energy increases true or false
Answer:
true
Explanation:
15 points and will mark as a brainlest PLEASE
. Let us say that you put a cup of cold water in one room and a cup of hot water in
another room. Both rooms are at room-temperature. Why does the cold water get
warmer and the hot water get cooler?
Answer:
In both cases, energy will move from an area of higher temperature to an area of lower temperature. So, the energy from room-temperature air will move into the cold water, which warms the water.
Explanation:
Answer:
this is the answer okkkkkkkkkkkkkkkk
A graph labeled velocity versus time with horizontal axis time (seconds) and vertical axis velocity (meters per second). A blue line runs straight across at 2 units on the vertical axis for all horizontal axis values.
Based on the graph of velocity over time, which could be the initial velocity and the final velocity for this graph?
initial = 0 m/s; final = 2.5 m/s
initial = 2.5 m/s; final = 2.5 m/s
initial = 3.0 m/s; final = 6.0 m/s
initial = 6.0m/s; final = 3.0 m/s
Answer:
B
Explanation:
If you dident pay for the no ad thing its okay all u have to do is answer one person's question every day befor you ask a question no ad's just answers you gotta do it every day tho
Answer:
Second option is correct.
The initial and the final velocity for the graph is
initial=2.5m/s; final=2.5m/s.
Explanation:
In given velocity time graph, the line is horizontal and parallel to the x-axis (time-axis).It means the body is moving at the constant velocity.Its acceleration is zero.Explain Velocity-Time graph?The graph plotted between velocity and time, is called velocity time graph.
by it acceleration can be find out.the area of the graph shows distance travelled.it can be plotted in all the quadrants because velocity is a vector quantity.Hence, second option is correct.
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On his biking exercise, Albert rides 15 Km south. He sees a dead end so
he turns back and heads 4 Km north. He then continues for 1 km north
until he stops for a break. What distance did he cover? *
Answer:
m
Explanation:m
The electric field intensity between two large,
charged parallel metal plates is 6000 N/C. The
plates are 0.05 m apart. What is the electric poten-
tial difference between them?
Answer:
300 is the answer
Explanation:
Hope that this answer will help you
The electric potential difference between the two large, charged parallel metal plates is 300 V.
What is the potential difference?The electric potential difference (V) between two points is defined as the work done per unit charge in moving a positive test charge from one point to another.
Mathematically,
V = W/Q
where W is the work done in moving the charge Q between two points.
Here in the Question,
In the case of two large, charged parallel metal plates, The electric field intensity (E) is given as 6000 N/C and the distance between the plates (d) is 0.05 m. The electric field intensity between the plates is uniform, which means that the force on a test charge is constant at any point between the plates.
The work done (W) in moving a positive test charge from one plate to the other against the electric field is given by
W = F × d
where F is the force acting on the test charge and d is the distance moved.
Using the formula for electric field intensity
E = F/Q
we can express force:
F = QE
Substituting this in the formula for work done, we get
W = Q × E × d.
Now, the electric potential difference (V) between the plates is given by
V = W/Q = E × d = 6000 N/C × 0.05 m = 300 V.
V = 300 V
Therefore, the electric potential difference between the two large, charged parallel metal plates is 300 V. This means that if a positive test charge is moved from one plate to the other, the work done in moving it against the electric field is 300 J per coulomb of charge.
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1 point
If there is a surge in the demand for electricity in the UK, which of
these power stations can be used to meet this demand quickly? *
Nuclear
Gas
Wind
Solar
Submit
Answer:
Option A nuclear
Explanation:
The rate of electricity production in nuclear power plant is much higher as compared to the rate of electricity generation in gas, wind and solar power plants.
Thus, in case where large amount of electricity is to be produced in a short period then one must rely on nuclear power plants.
Therefore, option A is correct
Answer: Option A- Nuclear power station
Explanation: During a sudden increase in demand, Nuclear power stations can be used easily to supply the needed energy as they have an extremely short start up time. This means that the energy can be supplied in a short period of time.
i have a physAn e.m.f. is induced across a wire when it moves through the magnetic field between the poles of a magnet.
Which electrical device operates because of this effect?ics exam someone please help 9th grade &
Answer:
Generator.
Explanation:
In a generator, an e.m.f. is induced across a wire when it moves through the magnetic field between the poles of a magnet.
The mode of operation of a generator is that a metal core with copper tightly wound to it (conductor coil) rotates rapidly between the two (2) poles of a horseshoe magnet type. Thus when the conductor coil rotates rapidly, it cuts the magnetic field existing between the poles of the horseshoe magnet and then induces the flow of current.
The SI unit for energy is Newton true or false
Explanation:
false....it is joules
..........
The answer is false
The SI unit for energy is joules and not Newton. Energy can be described as the capability of an individual to perform work. Every day all living things carry out one form of work or the other. These might include walking, running, cooking, singing, driving etc. All these activities require energy, some require a whole lot of energy.
This is why the importance of energy for our day to day activities cannot be over emphasized.
Hence the SI UNIT for energy is joules.
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Una caja pesa 800N descansa sobre el piso de un elevador, en determinado instante el elevador tiene una velocidad hacia abajo de 5.0 m/s y una aceleracion hacia arriba de 2.5 m/s2 ¿en ese instante cual es la fuerza aue ejerce el piso del elevador hacia abajo?
Answer:
La fuerza ejercida sobre el piso del elevador hacia abajo es aproximadamente 1,004.075 N
Explanation:
Fuerza = Masa × Aceleración
El peso de la caja = 800 N
La velocidad hacia abajo = 5.0 m / s
Tomando la aceleración debida a la gravedad, g = 9,8 m / s²
La masa del cuerpo, m = 800 N / g = 800 N / (9,8 m / s²) ≈ 81,63 kg
La fuerza ejercida sobre el piso del ascensor durante la aceleración hacia arriba, 'N', se da como sigue;
N = m · g + m · a
a = 2,5 m / s²
∴ N = 81,63 kg × 9,8 m / s² + 81,63 × 2,5 m / s² = 800 N + 81,63 × 2,5 m / s² ≈ 1,004,075 N
La fuerza ejercida sobre el piso del ascensor hacia abajo ≈ 1,004.075 N
which structure is larger cell, organ , multicellular or cell structure
Answer:
organ is larger cell..............
Answer:
organ
Explanation:
Can you please help me figure out the work for the missing quantities?
Answer: set up proportions
Explanation:
This dude was sitting in the chair. Someone pulls the chair out from under him. He does not move in the direction of the chair. He simply falls to the ground in the same spot he was sitting. This shows inertia because:
Answer:
This shows inertia because inertia is an object's resistance to change in motion. When the person (imma call them a she) who pulled the chair from under the guy did that, the chair was the one affected by the force of the girl, not the guy. The guy continued heading in the direction he was originally going, which was down.
At least, that's about how I would answer this question.
How much energy is transferred when the potential difference is 12V and the charge is 7.5C?
The energy is transferred when the potential difference is 12 volts and the charge is 7.5 C is 90 Joules.
What is energy?
In physics, energy is the capacity to carry out work. It might be potential, kinetic, thermal, electrical, chemical, radioactive, etc., among other types. Heat and work are other examples of energy being transferred from one body to another. Once it has been transmitted, energy is always allotted according to its nature. As a result, heat transmission could result in thermal energy while effort could provide mechanical energy.
Given the information in the question:
The potential difference, V = 12 Volts,
The charge, q = 7.5 C,
Calculate the energy, E by the formula given below,
E = [tex]VQ[/tex]
Substitute the values of charge and potential difference,
E = [tex]12*7.5[/tex]
E = [tex]90 Joules[/tex]
Therefore, the energy is transferred when the potential difference is 12 volts and the charge is 7.5 C is 90 Joules.
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A plane travels 2400 km in 3 hours. Calculate its average speed
Explanation:
Speed =distance travelled/time taken
25 points please help
In the chemical reaction CH4 + 2O2 → CO2 + 2H2O, there are reactants on the left of the equation and products on the right. If you count the atoms in the reactants, there are
a. 4 carbon atoms, 4 hydrogen atoms, and 2 oxygen atoms
b. 1 carbon atom, 4 hydrogen atoms, and 2 oxygen atoms
c. 1 carbon atom, 4 hydrogen atoms, and 4 oxygen atoms
d. 4 carbon atoms, 4 hydrogen atoms, and 4 oxygen atoms
Answer:
the answer is A. 4 carbon atoms, 4 hydrogen atoms, and 2 oxygen atoms
The number of atoms of each molecule of the reactants is required.
The correct option is c. 1 carbon atom, 4 hydrogen atoms, and 4 oxygen atoms
The given reaction is
[tex]CH_4+2O_2\rightarrow CO_2+2H_2O[/tex]
For carbon atoms
The only carbon atom is present in [tex]CH_4[/tex]
So, 1 carbon atom
The hydrogen atoms are also present is [tex]CH_4[/tex]
There are 4 hydrogen atoms.
The oxygen atoms present is [tex]2\times 2=4[/tex]
So, the number of atoms present in the reactants are c. 1 carbon atom, 4 hydrogen atoms, and 4 oxygen atoms
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Asubstance is cut into several piece and computered to the density of the original sample the density of each piece will be
The position of galaxies in the universe was once hypothesized to be
constant, but evidence gathered by Edwin Hubble indicated that many
galaxies are actually racing away from Earth at high speeds. Which
statement is best supported by this discovery?
A. Science is a body of knowledge that is a subject to change based on data.
B. A hypothesis can become a law.
C. Science is a body of knowledge based on the work of well-known scientists.
D. A hypothesis is the correct answer to a problem.
The position of galaxies in the universe was once hypothesized to be
constant, but evidence gathered by Edwin Hubble indicated that many
galaxies are actually racing away from Earth at high speeds. the
statement that is best supported by this discovery is Science is a body of knowledge that is subject to change based on data, therefore the correct answer is option A
What is the scientific claim?Scientific claims are statements made in science based on an experiment.
These Scientific claims are backed by the experimental data and their true results obtained from scientific investigation and experimentation.
The position of galaxies in the universe was once thought to be fixed, but Edwin Hubble's observations revealed that many galaxies are actually moving away from Earth quickly. The conclusion that this discovery best supports is that science is a body of knowledge that is subject to change based on data, so option A is the appropriate answer.
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A car is traveling on the highway at 28 m/s The driver sees a tree in the middle of the road and slams on the brakes. The car comes to a complete stop over a distance of 35 meters. What was the acceleration of the car as it was coming to a stop?
Answer:what are the answer options?
Explanation
Light refracts when:
A. It changes speed
B. It changes from a particle to a wave
C. Its density changes
D. It encounters a solid object
Answer:
the answer of the question is B
Answer: B
Explanation:
difference between local action and polarization
Explanation:
The local action of a battery is the deterioration of the battery due to currents that are flowing from and to the same electrode. ... Polarization is a defect that occurs in simple electric cells due to the accumulation of hydrogen gas around the positive electrode.
1:A pattern or grouping of stars that people imagine representing a figure, an animal or an object.
2:an object that orbits the sun, is large enough to have been rounded by its own gravity, and has cleared the area of its orbit of any debris.
Answer:
1.constellation2.Probably a dwarf planetWhat is civics?
a. Political involvement as a citizen of a community
b. Protesting, organizing, volunteering to be involved
c. Voting and campaigning to be involved
d. All of the above
Answer:
D
Explanation:
because civis is the rights and obligations of citizens in society and all A,B,C have a right to a citizen.
A 5 kg rock and a 10 kg rock are dropped from a height of 10 m. Which of the following statements describes what happens to the potential energy of the rocks?
Answer:
statement not given greater mass has greater potential energy at same height
What are the layers of the Sun, starting from the center and moving outward?
Answer:
There are three main parts to the Sun's interior: the core, the radiative zone, and the convective zone. The core is at the center. It the hottest region, where the nuclear fusion reactions that power the Sun occur. Moving outward, next comes the radiative (or radiation) zone.
Answer:
B.core, radiative zone, convective zone, and photosphere
Explanation:
Edge 2021
Which advantage of stored digital data could be a disadvantage in some
circumstances?
A. Stored digital data can be completely protected from viruses and
hackers.
B. All types of information can be passed on to receivers of the data.
O C. The data are stored reliably.
D. After several copies are made, stored digital data remain identical.
B. All types of information can be passed on to receivers of the data.
What are the advantages of digital data?Major benefits of Digital Data Collection
Become more productive. Digitalization has saved our customers oodles of time.Free business growth.Actual cost savings. Reduce delays with secure data.Quicker, easier data-driven decision making.Digital data can be used to store very complex information.
Music, movies, and games can also be stored as what are ultimately sequences of zeroes and ones being interpreted by a computer.
In a technical sense, data is stored as code or numbers for a computer to read and control.
It's then guided based on the computer input rules and stored in different locations.
Data within files can be stored offline in different drive types, on a physical location like a hard drive and online in the cloud.
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Answer:
B. All types of information can be passed on to receivers of the da
A body completes one round of a circular path of radius 14m in 10 seconds. Calculate its average speed and average velocity at the end of one round.
Answer:
Average speed = 8.8 m/s
Average velocity = 8.8 m/s
Explanation:
From the question,
Avearge speed = 2πr/t................ Equation 1
Where r = 14 m, t = 10 s
Constant π = 22/7
Substitute this value into equation 1
Average speed = 2(22/7)(14)/10
Avearge speed = 8.8 m/s.
For a body moving in circular motion, The average speed and average velocity are equal.
Hence,
Average speed = 8.8 m/s
Average velocity = 8.8 m/s