four different constant forces are exerted on a 2.0 kg object. the figure represents the magnitude and direction of each force. if the object is initially at rest, how long will it take the object to reach a speed of 2.0 m/s?
Answers
The time taken for the object to reach the speed is 4 seconds.
What is the resultant force on the object?
The resultant force applied on the object is calculated as follows;
Sum of the vertical component forces, Fy = 17 N - 20 N + 5 N sin(37)
Fy = 0.009 N
Sum of the horizontal component forces, Fx = -3 N + 5 N cos(37)
Fx = 0.993 N
The resultant force is calculated as follows;
F = √ ( Fy² + Fx² )
F = √ ( 0.009² + 0.993²)
F = 0.993 N
The time taken for the object to reach the speed is calculated as follows;
F = mv/t
t = mv / F
t = (2 x 2) / (0.993)
t = 4.02 seconds ≈ 4 seconds
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Related Questions
what is the momentum of a 2.0 kg fish swimming at 1.5 m/s
Answers
In this case, the mass of the fish is 2.0 kg and its velocity is 1.5 m/s. Therefore, the momentum of the fish can be calculated as:
momentum = mass x velocity
momentum = 2.0 kg x 1.5 m/s
momentum = 3.0 kg m/s
So the momentum of the 2.0 kg fish swimming at 1.5 m/s is 3.0 kg m/s.
two pickup trucks rescue a car stuck in the sand. the first truck pulls with a force of 5000 lb and second truck pulls with a force of 4000 lb at an angle of to the first truck. how much force can the combined pull of the two trucks generate? round to the nearest pound.
Answers
The total force exerted by the two trucks is 7,443.11 lb
The force exerted by the first truck = 5000 lb
The force exerted by the second truck = 4000 lb
The angle between the first and second trucks is 50°
The net force produced by the two trucks can be calculated using the laws of cosines which is
F² = F₁² + F₂² - 2F₁F₂cosθ
where F is the net force
F₁ is the force exerted by truck 1
F₂ is the force exerted by truck 2
Let us substitute the known values in the above equation, we get
F² = 5000² + 4000² - 2 x 5000 x 4000 x cos (130°)
= 250,00,000 + 160,00,000 - 400,00,000 x (-0.36)
= 410,00,000 + 144,00,000
F² = 554,00,000
F = √ 554,00,000
= 7,443.11 lb
Therefore, the net force due to those trucks is 7,443.11 lb
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a body weight 60 on the surface of the Earth where g is equal to 10 Newton and 15 Newton on the surface of the governor's calculate the value of force of gravitational
Answers
Answer:
Here is an example
Explanation:
which factors describe a gas
a. changing shape and fixed volume
b. changing shape and volume
c.fixed shape and volume
d.fixed shape and changing volume
Answers
Answer:
B. changing shape and changing volume
Explanation:
*no definite shape (takes the shape of its container)
*no definite volume
The following statements that correctly describe the modulus of elasticity, E:
Answers
The modulus of elasticity, E, is a measure of a material's stiffness and ability to resist deformation when a force is applied. It is defined as the ratio of stress to strain within the elastic range of the material. In other words, it describes how much a material will stretch or compress under a given force.
The modulus of elasticity is important because it allows engineers to predict how materials will behave under different conditions, such as temperature changes, loading conditions, and other factors. It also helps to determine the maximum load a material can withstand before it starts to deform or break.
In detail, the modulus of elasticity is a fundamental property of a material that describes its ability to resist deformation when subjected to external forces. It is calculated by measuring the stress and strain of the material and using the equation E = σ/ε, where σ is stress and ε is strain.
The modulus of elasticity is important in many areas of engineering, such as structural design, materials science, and mechanics. It helps to ensure that structures and materials are designed and tested to withstand the loads and stresses they will be subjected to, and it provides a basis for comparing different materials and choosing the best one for a particular application.
In summary, the modulus of elasticity, E, is a material property that describes its stiffness and resistance to deformation. It is correctly determined using Hooke's Law and is crucial for predicting the mechanical behavior of materials when subjected to stress.
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What change slowly occurs during the main-sequence lifetime of a star?.
Answers
Someone plz help I’ll give the right answer branliest
Answers
Answer:
the one that is clicked in the photo I think is right
PSYCHOLOGY. neurons communicate with each other through ____
A. synaptic research b. neural receptors c. postsynaptic signals d. neural impulses
Answers
Answer:
B. Nueral Receptors
Why is there no ideal time of day when all students should study?
Answers
Answer:because each individual works best at a different time of day. D. because scheduling prevents everyone from studying at a set time. emilleexo818 is waiting for your help.
Explanation:
Answer:
The correct and overall question would be: Because each individual works best at a different time of day
Explanation:
(I'm smart and I took the quiz, I hope this helped guys! :)
calculate the 76- kg pilot's effective weight (the force with which the seat pushes up on him) at the bottom of the circle, and at the top of the circle (assume the same speed).
Answers
The minimum radius of the circle is 5249m
The 76kg pilot's effective weight at the bottom of the circle is 5214N
The pilot's effective weight at the top the circle is 3724N
Here's the complete question:
a jet pilot takes his aircraft in a vertical loop.
a) if the jet is moving at a speed of 2000 km/h at the lowest point of the loop, determine the minimum radius of the circle so that the centripetal acceleration at the lowest point does not exceed 6.0g's
b) calculate also the 76kg pilot's effective weight ( the force with which the seat pushes up on him) at the bottom of the circle.
c) calculate the pilot's effective weight at the top the circle. (Assume the same speed.)
a) To determine the minimum radius of the circle so that the centripetal acceleration at the lowest point does not exceed 6.0g's.
v =2000 km/h
v = 2000/3.6 m/s
v = 555.6 m/s
centripetal acceleration, a
a = v²/r
Therefore
6g = v²/r
r = v²/(6g)
r =555.6²/(6*9.8)
r = 5249 m
b) The 76kg pilot's effective weight at the bottom of the circle
76*(6g + g) = 76*7*9.8 = 5214 N
c) The pilot's effective weight at the top the circle.
76*(6g-g) = 76*5*9.8 = 3724 N
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A bicycle wheel has a radius r = 0.25 m and rotates at a constant frequency of f = 98 rev/min. Calculate the period of rotation T of the wheel in seconds. What is the tangential speed of a point on the wheel's outer edge in m/s?
Answers
The period of rotation of the wheel is 0.6127 seconds.
The tangential speed of a point on the wheel's outer edge is 2.5624 m/s.
To calculate the period of rotation T, we need to convert the frequency from revolutions per minute (rev/min) to revolutions per second (rev/s).
Given:
The radius of the wheel (r) = 0.25 m
Frequency of rotation (f) = 98 rev/min
First, let's convert the frequency to rev/s:
Frequency in rev/s = Frequency in rev/min / 60
f' = 98 rev/min / 60 = 1.6333 rev/s (rounded to four decimal places)
Now, we can calculate the period of rotation T:
T = 1 / f'
T = 1 / 1.6333 rev/s = 0.6127 s (rounded to four decimal places)
The period of rotation (T) of the wheel is approximately 0.6127 seconds.
To calculate the tangential speed of a point on the wheel's outer edge, we can use the formula:
Tangential speed = \(\frac{2\pi r}{T}\), where T is the time period
Substituting the given values:
Tangential speed = 2 * \(\pi\) * (0.25 m) / 0.6127 s
Tangential speed = 2 * 3.14 * 0.25 / 0.6127 s = 2.5624 m/s (rounded to four decimal places)
The tangential speed is 2.5624 m/s.
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If a rock is thrown downward with an initial speed 6ms then what is the rocks velocity after 4 sec
Answers
Answer:
\(\huge\boxed{\sf V_f=45.2 \ m/s}\)
Explanation:
Given Data:Initial velocity = \(V_i\) = 6 m/s
Time = t = 4 sec
Acceleration due to gravity = g = 9.8 m/s²
Required:Final velocity = \(V_f\) = ?
Formula:\(v_f=v_i+gt\)
Solution:Put the givens in the formula
\(V_f=6 +(9.8)(4)\\\\V_f=6+39.2\\\\V_f=45.2 \ m/s\\\\\rule[225]{225}{2}\)
How is the answer D?
Answers
The graph that corresponds to 0.1 s in one complete cycle is graph D.
option D is the correct answer.
What is the period of a wave?The period of a wave is the time for a particle on a medium to make one complete vibrational cycle. Period, being a time, is measured in units of time such as seconds, hours, days or years.
Also, the period of a wave is the amount of time it takes for a wave to complete one wave cycle or wavelength.
From the given parameter, the coil rotates 10 times in one second. The period of the coil is calculated as;
Period = 1 s / 10
Period = 0.1 s
From the graphs, the only option that has one complete cycle in one second is option D.
Check option D, half cycle is 0.05 s and one full cycle is 0.1 s.
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22POINTS!
Match these items.
1 .
Westinghouse
built the first American A.C. generator
2 .
salt dome
found a relationship between electricity and magnetism
3 .
gas and oil
associated with gas and oil; show low gravity
4 .
solar cells
first workable electric light bulb
5 .
Einstein
developed the equation E=mc 2
6 .
geothermal
provides majority of the energy in the united states
7 .
Oersted
splitting heavy atoms
8 .
breeder
produces plutonium
9 .
turbine
powered by falling water or stream pressure
10 .
fission
thin silicon slices
11 .
Edison
using heat from the earth
Answers
Electricity can be produced by the relative motion of coil and a magnet.
How is electricity related to magnetism?We know that it is possible that we can be able to generate electricity by the alteration of a magnetic field. This is what we call the generation of electricity by electromagnetic induction. This was well discussed by Michael Faraday.
We have to note that the relative motion between the coils and the magnetic field is able to cause the fact that current would be induced in the coils as stated by the principle.
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Human eye forms an ____________ image on _________after passing through the lens
Answers
Answer:
inverted images
retina
Answer:
I hope the answer may help you
A boulder with a mass of 2,500 kg resting on a ledge 200 m above the ground falls. If the boulder’s ME is conserved, what is the speed of the boulder just before it hits the ground?
Answers
Answer:
nitial GPE = final KE 2500*10*200 = ½ 2500*v^2 v^2 = 2*10*200 v= 63.24 m/sec
Explanation:
what someone might say about your knowledge of atoms is
Answers
An atom is a unit of matter that specifically characterises a chemical element. One or more negatively charged electrons surround the core nucleus of an atom, which is made up of all of them.
What did you learn about atoms?The fundamental unit of chemistry is the atom. It is the smallest particle that can be separated into matter without releasing electrically charged particles. Additionally, it is the smallest piece of matter with the characteristics of a chemical element.When British chemist John Dalton established that chemicals always have whole number ratios of atoms, he provided the first modern proof that atoms exist. Because of this, it is H2O and not H20.The fundamental building blocks of all the substances on earth are called atoms. Our bodies contain atoms, which combine to create the molecules that make up matter.To learn more about chemical refer to:
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An atom is a unit of matter that specifically characterises a chemical element. One or more negatively charged electrons surround the core nucleus of an atom, which is made up of all of them.
What did you learn about atoms?The fundamental unit of chemistry is the atom. It is the smallest particle that can be separated into matter without releasing electrically charged particles. Additionally, it is the smallest piece of matter with the characteristics of a chemical element.
When British chemist John Dalton established that chemicals always have whole number ratios of atoms, he provided the first modern proof that atoms exist. Because of this, it is H2O and not H20.
The fundamental building blocks of all the substances on earth are called atoms. Our bodies contain atoms, which combine to create the molecules that make up matter.
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two planets in space gravitationally attract each other. if both the masses and distances are doubled, the force between them is group of answer choices twice as much half as much. four times as much. none of these. one-quarter
Answers
If both the masses and distances between two planets are doubled, the force between them will be four times as much as the original force. The force of gravitational attraction between two objects depends on the masses of the objects and the distance between them.
The force of gravitational attraction between two objects can be calculated using the formula F = G * (m1 * m2) / r^2, where F is the force, G is the gravitational constant, m1 and m2 are the masses of the two objects, and r is the distance between them.
If both the masses and distances are doubled, the new force can be calculated by substituting the new values into the formula. Doubling the masses will result in a factor of 2 * 2 = 4 in the numerator, while doubling the distance will result in a factor of (1/2) * (1/2) = 1/4 in the denominator.
Combining these factors, the new force will be (4 * F) / (1/4) = 16 * F, which is four times the original force. Therefore, when both the masses and distances between two planets are doubled, the force between them is four times as much as the original force.
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One strategy in a snowball fight is to throw
a snowball at a high angle over level ground.
While your opponent is watching this first
snowball, you throw a second one at a low
angle timed to arrive before or at the same
time as the first one. Assume both snowballs
are thrown with a speed of 33.3 m/s. The first
one is thrown at an angle of 55◦ with respect
to the horizontal.
At what angle should the second snowball
be thrown to arrive at the same point as the
first?
Answers
The angle the second snowball should be thrown to arrive at the same point as the first is determined as 35 degrees.
What is the range of the projectile?
The range of projectile is the maximum horizontal displacement of the projectile along the horizontal direction.
Mathematically, the maximum range of a projectile is given as;
R = u² sin (2θ) / g
where;
u is the speed of the snowballg is acceleration due to gravityθ is the angle of projectionWhen the angle of projection = 55⁰
R = (33.3² x sin (2 x 55) ) / (9.8)
R = 106.33 m
When the angle of projection = 90⁰ - 55⁰ = 35⁰
R = (33.3² x sin (2 x 35) ) / (9.8)
R = 106.33 m
Thus, when the second snowball is projected at an angle of 35⁰ it will attain the same horizontal displacement as the first snowball.
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What are some limitations to your direct observations of your environment? Give an example of an observation that could be made without using an instrument, but would be improved by using one. Give an example of an observation that could not be made without the use of an instrument.
Answers
Answer:
I am afriad I don't think we can answer this one as it is asking you about your enviroment.
Explanation:
Can you all solve this 2 problems I will mark you as brainlist if you are correct
Answers
Answer:
first answer is 70 newtons the second answer is f = 250N
a carnot engine operates between reservoirs at 500 k and 300k, discarding 1800 j of heat in each cycle. how much heat is supplied to the engine by the hot reservoir in each cycle? give your answer in j but do not include the units in the answer box.
Answers
The Carnot engine is 40% efficient.
It's far a super reversible thermodynamic manner that includes the subsequent 4 tactics, Isothermal growth, No different heating is more efficient than this one, as there may be no finite temperature distinction between the warmth supply and warmth receiver. Therefore, it's miles the most efficient reversible system.
A Carnot engine can be notion of to include a cylinder with adiabatic lateral partitions packed with a substance which can take in and supply warmness. The cylinder is closed by way of an adiabatic piston which could move out and deliver work. The cylinder can acquire paintings by means of shifting the piston inward.
The Carnot engine is a theoretical thermodynamic cycle proposed by means of Leonard Carnot. It estimates the maximum feasible performance that a heat engine all through the conversion manner of warmth into paintings and, conversely, operating among two reservoirs can own.
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Plants are eaten by grasshoppers, which are eaten by mice, which are eaten by snakes.
Answers
Answer:
food chain / web lol? was this a question?
which of the following factors determines the strength of the frictional force between two surfaces
Answers
Answer:
Explanation:
The strength of the force of friction depends on two factors: how hard the surfaces push together and the types of surfaces involved. What factors affect the gravitational force between two objects? Two factors affect the gravitational attraction between objects: mass and distance.
what is the affect of applying an unbalanced force on an object?
Answers
Answer:
An unbalanced force can change an object's motion. An unbalanced force acting on a still object could make the object start moving. An unbalanced force acting on a moving object could make the object change direction, change speed, or stop moving
Explanation:
hope this helps :)
If the change in velocity increases what happens to the acceleration during the same time period?
Answers
Answer:
Acceleration increases
Explanation:
what is the function of 2022 maxima’s available integrated dynamics-control module?
Answers
The function of 2022 Maxima's available Integrated Dynamics-Control Module is to enhance the car's performance and drivability.
The 2022 Maxima is equipped with an available Integrated Dynamics-Control Module that enhances the car's performance and drivability. This feature works in tandem with the car's drive mode selector, allowing drivers to choose from four different driving modes: Normal, Sport, Sport+, and Custom. The Integrated Dynamics-Control Module optimizes the Maxima's suspension and steering response to match the driver's preferred driving mode. In Normal mode, the car has a comfortable and relaxed ride, while Sport and Sport+ modes tighten up the steering and suspension for a more dynamic driving experience. Custom mode, on the other hand, allows drivers to adjust the car's performance to their specific preferences, including steering weight, throttle response, and transmission shift points.
Overall, the Integrated Dynamics-Control Module is a valuable addition to the 2022 Maxima that allows drivers to optimize their driving experience and tailor it to their preferences.
The 2022 Maxima's Integrated Dynamics-Control Module improves the car's performance and drivability by optimizing suspension and steering response to match the driver's preferred driving mode. This feature enhances the car's performance in different driving modes and allows drivers to customize their driving experience.
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before pushing down the piston, the pressure of the gas is 1.0 x 105 pa.pushinbg the piston reduces the volume of the gas from 500cm3 to 240cm3. calculate the final pressure of the gas
Answers
The final pressure of the gas is p2 = 2.085 * 10^5 pa.
Boyle's law is a gas law that states that the pressure exerted by a gas (of a given mass at a constant temperature) is inversely proportional to the volume it occupies. That is, if the temperature and quantity of gas are constant, the pressure and volume of the gas are inversely proportional.
Boyle's Law states that a change in the volume occupied by a gas (at a constant amount and temperature) leads to a change in the pressure exerted by the gas. The following mathematical formulation of this law is possible:
P1V1 = P2V2
Given,
Initial Volume, v1 = 500 cm3
Final Volume, v2 = 240 cm3
Initial Pressure, p1 = 1.0 * 10^5 pa
Final Pressure, p2
We know that,
p1 v1 = p2 v2
1.0 * 10^5 * 500 = p2 * 240
p2 = 2.085 * 10^5 pa
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What type of particle has no mass or charge?
Alpha
Beta
Gamma
Proton
Answers
Answer:
Gamma
Explanation:
Alpha particles are similar to Helium particles, which have a mass of 4.
Beta particles are electrons, and they have a mass of 1/1836, a charge of -1.
Protons have a charge of +1 and a mass of 1.
Gamma emission is in waves, not particles, so they have no mass and no charge.
Gamma particle has no mass or charge. Hence option C is correct.
What is Gamma ray ?A gamma ray, commonly known as gamma radiation (symbol or gamma), is a kind of electromagnetic radiation that is produced by the radioactive disintegration of atomic nuclei. It is made up of electromagnetic waves with the smallest wavelengths, which are often shorter than those of X-rays. It gives the most photon energy at frequencies exceeding 30 exahertz (31019 Hz). Paul Villard, a French scientist and physicist, discovered gamma radiation in 1900 while researching radium radiation. Ernest Rutherford dubbed this radiation gamma rays in 1903 because of its comparatively significant penetration of matter; in 1900, he named two less penetrating forms of decay radiation (discovered by Henri Becquerel) alpha rays and beta rays in ascending order of penetrating strength.
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On what factors resistance of conductor at given temperature depends , derive relevant formula
Answers
The formula for calculating the resistance of a conductor is:
R = ρ (L / A)
where R is the resistance, ρ (rho) is the resistivity of the material, L is the length of the conductor, and A is the cross-sectional area of the conductor.
The resistivity of a material is a constant that depends on the material and the temperature of the conductor. It is usually given in units of ohm-meters (Ωm). The resistivity of a material increases with temperature, which means that the resistance of a conductor also increases as the temperature of the conductor increases.
The length of the conductor also affects its resistance. The longer the conductor, the greater its resistance. This is because the longer the conductor, the more collisions there are between electrons and the atoms in the material, which hinders the flow of current.
The cross-sectional area of the conductor also affects its resistance. The larger the cross-sectional area, the lower the resistance. This is because a larger cross-sectional area provides more space for the electrons to flow, which reduces the number of collisions between the electrons and the atoms.
In summary, the resistance of a conductor at a given temperature depends on the resistivity of the material, the length of the conductor, and the cross-sectional area of the conductor. These factors are taken into account in the formula for calculating the resistance of a conductor, which is R = ρ (L / A).