Tori applies a force of 20 newtons to move a bookcase with a mass of 40 kg. What
is the acceleration of the bookcase?
Answers
Answer:
Acceleration, a = 0.5m/s²
Explanation:
Given the following data;
Force, f = 20N
Mass = 40kg
To find the acceleration;
Force is given by the multiplication of mass and acceleration.
Mathematically, Force is;
\( F = ma\)
Where;
F represents force.
m represents the mass of an object.
a represents acceleration.
Making acceleration (a) the subject, we have;
\(Acceleration (a) = \frac{F}{m}\)
Substituting into the equation;
\(Acceleration (a) = \frac{20}{40}\)
Acceleration, a = 0.5m/s²
Therefore, the acceleration of the bookcase is 0.5m/s²
The acceleration of a 40kg bookcase that a force of 20N was applied to is 0.5m/s².
HOW TO CALCULATE ACCELERATION:
The acceleration of a body can be calculated by dividing the force applied to the object by mass. That is;Acceleration (m/s²) = force (N) ÷ mass (kg)According to this weekend, Tori applies a force of 20 newtons to move a bookcase with a mass of 40 kg. The acceleration is calculated as follows:acceleration = 20N ÷ 40kgacceleration = 0.5m/s²Therefore, the acceleration of a 40kg bookcase that a force of 20N was applied to is 0.5m/s².Learn more about how to calculate acceleration at: https://brainly.com/question/8311672?referrer=searchResults
Related Questions
We conclude that in a series circuit with fixed battery voltage, a greater resistance in one element means there needs to be a larger electric field to drive electrons through with the same speed. What does this observation imply about the brightness or temperature of a light bulb with a larger resistance
Answers
The observation implies that a light bulb with a larger resistance will be brighter and hotter compared to a light bulb with a smaller resistance.
A larger resistance in an element of a series circuit hinders the flow of electrons, requiring a larger electric field to maintain the same electron speed. In the case of a light bulb, this observation implies that a light bulb with a larger resistance will be brighter and hotter. The increased resistance causes more electrical energy to be converted into heat and light within the bulb. Consequently, the bulb emits a brighter glow due to the higher amount of energy being transformed into light. Simultaneously, the temperature of the bulb rises as more energy is dissipated as heat. Thus, a light bulb with a larger resistance exhibits both increased brightness and a higher operating temperature.
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The magnetic field on the earth that protects us from solar wind is caused by [BLANK]. (Select all that apply)a. the earth's revolutionb. the liquid outer corec. the earth's tilt on its axisd. the seasonse. the solid inner coref. the earth's rotation
Answers
The correct options for the factors that contribute to the Earth's magnetic field, which protects us from solar wind, are option b. the liquid outer core and option f. the Earth's rotation.
The Earth's magnetic field is generated by the motion of molten iron and nickel in the liquid outer core of the Earth (Option b). This motion, known as convection, generates electric currents that produce the magnetic field.
The Earth's rotation (Option f) also plays a significant role. The rotation of the Earth causes the convection currents in the liquid outer core to circulate and amplify the magnetic field, creating a dynamo effect.
The Earth's revolution (Option a) around the Sun and its tilt on its axis (Option c) are not directly responsible for the generation of the Earth's magnetic field. They are factors that influence climate and seasons on Earth but do not contribute to the magnetic field.
The seasons (Option d) are related to the Earth's axial tilt and its orbit around the Sun but are not directly connected to the generation of the magnetic field.
The solid inner core (Option e) is not involved in generating the Earth's magnetic field. It is mainly composed of solid iron and nickel and does not have the fluid motion required for the generation of a magnetic field.
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Which is an example of kinetic energy?
a. an archer's bow with the string drawn back
b.river water at the top of a waterfall
c. a Ferris wheel before it starts turning
d.a crumb falling from a table.
Answers
Answer:
it's a
Explanation:
Answer:
I believe its D!
Explanation:
Kenetic energy is motion
Express 48 m/s in terms of
1.km/h
2.m/min
3.km/s
4.km/minutes
Answers
48 m/s in terms of km/h is 720.8 km/h. In terms of m/min is 2880 m/min, in terms of km/s is 0.048 km/s and in terms of km/min is 2.88 km/min.
To solve this question, we need to understand some terms. The unit of velocity is measured in m/s. It can be expressed in different units of velocity.
1 km (kilometer) = 1000 meter
1 h (hour) = 3600 seconds
1 minutes = 60 seconds
To convert m/s into km/h,
48 m/s * 3600/1000 = 172.8 km/h
To convert m/s into m/min,
48 m/s * 60 = 2880 m/min
To convert m/s into km/s,
48 m/s ÷ 1000 = 0.048 km/s
To convert m/s into km/minutes,
48 m/s * 60 / 1000 = 2.88 km/min
Therefore, the 48 m/s expressed is 172.8 km/h, 2880 m/min, 0.048 km/s and 2.88 km/min.
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48 m/s is equivalent to 172.8 km/h, 2880 m/min, 0.048 km/s, and 2.88 km/minute.
To express 48 m/s in different units of velocity:
km/h (kilometers per hour):
To convert m/s to km/h, we can use the conversion factor of 3.6 since 1 m/s is equal to 3.6 km/h.
48 m/s * (3.6 km/h / 1 m/s) = 172.8 km/h
Therefore, 48 m/s is equivalent to 172.8 km/h.
m/min (meters per minute):
To convert m/s to m/min, we can use the conversion factor of 60 since there are 60 seconds in a minute.
48 m/s * (60 m/min / 1 s) = 2880 m/min
Therefore, 48 m/s is equivalent to 2880 m/min.
km/s (kilometers per second):
Since 1 kilometer is equal to 1000 meters, to convert m/s to km/s, we divide the value by 1000.
48 m/s / 1000 = 0.048 km/s
Therefore, 48 m/s is equivalent to 0.048 km/s.
km/minute (kilometers per minute):
To convert m/s to km/minute, we first need to convert m/s to km/s (as calculated in the previous step) and then multiply by 60 to convert seconds to minutes.
0.048 km/s * 60 = 2.88 km/minute
So, 48 m/s is equivalent to 2.88 km/minute.
Hence, 48 m/s is equivalent to approximately 172.8 km/h, 2880 m/min, 0.048 km/s, and 2.88 km/minute.
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A string under a tension of 170 N has a frequency of 300 Hz.What will its frequency become if the tension is increased to 340 N?
Answers
The speed of the wave on a string is given by Taylor's formula:
\(v=\sqrt[]{\frac{F}{\mu}}\)where
F = tension force
μ = linear density = mass per unit length
But also we can say the speed of any wave is given by:
\(v=\lambda\times f\)where:
λ = wave length
f = frequency
Plug the second equation in the first one. We get:
\(\lambda\times f=\sqrt[]{\frac{F}{\mu}}\)Now solve for f:
\(f=\frac{1}{\lambda}\times\sqrt[]{\frac{F}{\mu}}\)Lets say wave length is the same on the second case. Since it's the same string μ will also be the same.
See that 340 N = 2 x 170, so we can write:
\(\begin{gathered} f_{new}=\sqrt[]{2}\times\frac{1}{\lambda}\sqrt[]{\frac{F}{\mu}} \\ f_{new}=\sqrt[]{2}\times f_{old} \\ f_{new}=\sqrt[]{2}\times300 \\ f_{new}\approx424Hz \end{gathered}\)What's the free body diagram for:
Mr. Seifert needs to push a cardboard box down the hallway for Ms. Wang. The box has a mass of 40 kg and he is pushing it with an acceleration of 2 m/s/s. Because the cardboard does not slide easily, there is a friction force of 25 Newtons acting on the box to the LEFT. How much force is Mr. Seifert applying to the box to move it forward to the RIGHT?
Answers
(a) The free body diagram for representing all the forces acting on an object.
(b) The force Mr. Seifert is applying to the box to move it forward to the RIGHT is 105 N.
What is free body diagram?
A free body diagram is a graphical illustration of all the forces acting on an object.
The force applied by Mr Seifert is calculated by applying Newton's second law of motion as follows;
F - Ff = ma
where;
F is the applied forceFf is the force of frictionm is the mass of the cardboarda is the acceleration of the cardboardThe given parameters include;
mass of the cardboard = 40 kg
force of friction = 25 N
acceleration of the cardboard = 2 m/s²
The force applied by Mr Seifert is calculated as follows;
F = Ff + ma
F = 25 N + (40 kg x 2 m/s²)
F = 105 N
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How does the range of a ground launched projectile change when the launch angle changes?
Answers
Answer:
Higher launch angles have higher maximum height
Since steeper launch angles have a larger vertical velocity component, increasing the launch angle increases the maximum height.
Why do the interiors of saturn and jupiter contain large amounts of liquid metallic hydrogen?
Answers
The interiors of Saturn and Jupiter contain a large amount of large metallic hydrogen because liquid hydrogen transforms into liquid metallic hydrogen as one descends, reaching a depth of 12,000 kilometers as the radius of Jupiter is 71,000 kilometers the hydrogen is below the cloud layers.
Helium and hydrogen make up the majority of the atmospheres of Jupiter and Saturn. The hydrogen changes from a high-pressure gas to liquid hydrogen a few hundred kilometers below the cloud levels. It would take some fairly intense pressures to create this on Earth, but it is possible. It's a component of rocket fuel.
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A patient has an ongoing history of cancer. She has a tumor in the abdominal region, and has been undergoing treatment for it. There may be other tumors and a potential blockage in the surrounding area that need to be investigated. The imaging technique that might provide the most information in this case is . Joe has ongoing issues with his throat and feels some sort of blockage or abnormality as he swallows. The doctor decides to use X-ray imaging to visualize Joe’s internal anatomy as he swallows to help determine the nature of the problem. will be used for this procedure.
answer: 1. a CT scan
2. Fluoroscopy
Answers
Answer:
the answer is at the BOTTOM OF THEIR QUESTION
Explanation:
IT IS CORRECT BTW
What minimum frequency photon is needed if the photoelectric effect is to be observed?
Answers
The minimum frequency of the photon needed to observe the photoelectric effect can be calculated by dividing the work function of the material by Planck's constant.
The minimum frequency of a photon needed to observe the photoelectric effect depends on the material being used. In order for the photoelectric effect to occur, the energy of the incident photon must be equal to or greater than the work function of the material.
The work function is the minimum energy required to remove an electron from the material. It is specific to each material and is usually given in electron volts (eV) or joules (J).
To calculate the minimum frequency of the photon, you can use the equation:
E = hf
where E is the energy of the photon, h is Planck's constant (6.626 x 10^-34 J*s), and f is the frequency of the photon.
If we rearrange the equation to solve for f, we get:
f = E / h
So, to find the minimum frequency, we divide the work function (E) by Planck's constant (h).
For example, let's say the work function of a material is 2 eV. To find the minimum frequency of the photon required to observe the photoelectric effect, we would calculate:
\(f = (2 eV) / (6.626 \times 10^-{34} J*s)\)
Note that we need to convert the work function from electron volts to joules before performing the calculation.
Once we have the frequency, we can use the relationship between frequency and wavelength (c = λf, where c is the speed of light and λ is the wavelength) to find the corresponding minimum wavelength of the photon.
So, in summary, the minimum frequency of the photon needed to observe the photoelectric effect can be calculated by dividing the work function of the material by Planck's constant.
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How many Protons does Na (sodium) have
O 23
O 12
O 13
O 11
Answers
what is the name often given to the force exerted by the first object on a second object
Answers
A car with a mass of 1,500 kg is driving at 20 m/s. What is the kinetic energy of the car?
O 15,000 J
O 300,000 J
O 30,000 J
O 150,000 J
Answers
The kinetic energy of the car is 300,000J
What is Kinetic energy?Kinetic energy is the energy of motion.
The formula for kinetic energy is given as \(K.E = \frac{1}{2} mv^{2}\)
where m = mass of object , v = speed of object.
An object having some speed and mass will have kinetic energy while an object at rest will not have any kinetic energy since the speed of object at rest is zero.
Since at rest speed is zero, an object has kinetic energy only when it is in motion.
From the question,
m = 1,500kg
v = 20m/s
K.E = (1/2) x 1,500 x 20 x 20
K. E = 300,000J
The car now possess a kinetic energy of 300,000J
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What does the area under the velocity-time graph represent.
Answers
Answer:
The distance traveled!
Explanation:
This is a velocity time graph of an object moving in a straight line due North.
a 0.48 kg object travels from point a to point b. if the speed of the object at point a is 3.0 m/s and the kinetic energy at point b is 8.0 j, determine the following.(a) its kinetic energy at A?
(b) its speed at point B?
(c) the total work done on the particle as it moves from A to B?
Answers
It can be determined that Kinetic energy at point A is 2.16 J and Speed at point B is 4.16 m/s and Total work done on the object from A to B = 5.84 J, found using work-energy theorem.
(a) Kinetic energy at point A can be calculated using the formula:
Kinetic energy = (1/2) * mass * speed²
Kinetic energy at point A = (1/2) * 0.48 kg * (3.0 m/s)²
= 2.16 J
Therefore, the kinetic energy of the object at point A is 2.16 J.
(b) The speed of the object at point B can be calculated using the formula:
Kinetic energy = (1/2) * mass * speed²
speed² = (2 * Kinetic energy) / mass
speed = \sqrt{[(2 * 8.0 J) / 0.48 kg]}
= 4.16 m/s
Therefore, the speed of the object at point B is 4.16 m/s.
(c) The total work done on the particle as it moves from A to B is equal to the change in kinetic energy of the object, which can be calculated as:
Work done = Kinetic energy at point B - Kinetic energy at point A
= 8.0 J - 2.16 J
= 5.84 J
Therefore, the total work done on the particle as it moves from A to B is 5.84 J.
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What change of state occurs during vaporization? liquid to gas gas to liquid solid to liquid liquid to solid
Answers
Answer:
A is correct!
Explanation:
e2020
Answer:
a
Explanation:
right on edge :)
What happens to the capacitance of a parallel plate capacitor when it is connected to a battery and dielectric is inserted?
(pls help fast it's urgent)
Answers
Answer:
After the dielectric is inserted the capacitance is increased hence the stored energy is also increased . It may be noted here that since voltage between the capacitor V0 is constant the electric field between the plates also remains constant .
A ground water tank has its height 2m. Calculate the pressure at its bottom when
it is completely filled with water. (g = 9.8 m/s²)
Answers
Answer: The pressure at the bottom : 19600 N/m²
Question 1 of 10
Assuming that voltage remains constant, what happens to the current in a
wire if the length of the wire increases?
A. The current is not affected by a change in wire length.
B. The current decreases.
C. The current alternates between high and low values.
D. The current increases.
Answers
Hope that helps!~
during which lunar phase does every solar eclipse occur?
Answers
Answer:
It has to be the "New Moon" because that is when the moon is between the sun and the earth.
A lunar eclipse can occur when the earth is between the sun and the moon.
Since friction is a force,
what unit is friction
measured In???
Answers
Answer:
Since friction is a force it is measured in newtons
Hope this helps
what gives the sun its slightly mottled appearance when viewed in visible light under high magnification?
Answers
The sun's slightly mottled appearance when viewed in visible light under high magnification is caused by granulation, which is the result of convection currents on its surface.
The sun's mottled appearance when observed in visible light under high magnification is primarily due to a phenomenon called granulation.
Granulation refers to the pattern of small, bright and dark cells or granules that cover the sun's photosphere, which is the visible surface of the sun.
These granules are the result of convection currents occurring in the outer layers of the sun. The intense heat from the sun's core creates rising hot plasma, which carries energy to the surface.
As the plasma reaches the surface, it cools and sinks back down into the interior, forming the dark regions of the granules. The bright regions correspond to the hotter plasma rising to the surface.
The granules are constantly changing in shape, size, and brightness due to the dynamic nature of convection. When observed under high magnification, the individual granules become visible, giving the sun its slightly mottled appearance.
This granular pattern provides valuable insights into the Sun's surface dynamics and helps scientists study phenomena such as solar convection and energy transfer in the outer layers of the Sun.
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a 150 lb (667 n) diver needs to get to the top of a 10 m high diving board. which method of getting to the top would require the most amount of work?
Answers
The calculated value is 1.2*10³N. The push or pull on a mass-containing item changes its velocity.
An external force is an agent that has the power to alter the resting or moving condition of a body. It has a direction and a magnitude. The word "force" has a clear definition. At this level, calling a force a push or a pull is entirely appropriate. A force is not something an object "has in it" or that it "contains." One thing experiences a force from another.
Assuming that the x-axis runs parallel to the diving board and that the left pedestal's force is F1 at x = 0, We define the right pedestal's force as F2 and its location as x=d. W is the diver's weight, which is found at x=L. Setting the sum of forces (with upward positive) and the sum of torques (around x2) to zero yields the following two equations:
W(L d) + F1 + F2 F1 = 0. (a) The result of the second equation, F1 = d/Ld
W=(1.5m/3.0m)(580N)=1160N,
should be rounded off to F1 = 1.2*10³ N. As a result,
F1=1.2*10³N.
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Worksheet 4.2
How Do People Destroy Natural Resources
Direction: Identify the effects of Some Human activities on natural Resources and suggest ways to reduce the effects.
Answers
Some of the ways that humans are destroying natural resources and the effect of human activities include:
DeforestationOil drillingFossil fuel burningSome of the ways to reduce the effects of our activities are:
Drive lessEat less meatSupport sustainable businessesHow can we mitigate the negative impacts on the environment ?Deforestation is the clearing of forests for human use. This can lead to soil erosion, water pollution, and the loss of biodiversity. Oil drilling is the process of extracting oil from the ground. This can pollute the air and water, and can damage the environment.
Driving less is one of the best ways to reduce our impact on the environment. We can walk, bike, or take public transportation whenever possible. Meat production is a major contributor to climate change. We can reduce our impact on the environment by eating less meat and more plant-based foods.
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which best describes nuclear fission?
Answers
Answer:
Third option: "A nucleus collides with a neutron and splits, releasing energy."
Explanation:
When nucleus that collides with a neutron splits (fission) releases energy in the process. This is a case of fission.
This is how a fission nuclear reactor works.
Answer:
It be C
Explanation:
Right on edg
What part of the cell uses the glucose from the breakdown of carbohydrates to make ATP?
a]chloroplast
b]ribosome
c]cell membrane
d]mitochondria
Answers
Newton's first law of motion is the law of inertia
Answers
Answer:
this statement is true because I looked it up
The refractive index of medium ‘X’ with respect to medium ‘Y’ is 2/3 and
refractive index of medium ‘Y’ with respect to medium ‘Z’ is 4/3. Find the refractive
index of medium ‘Z’ with respect to medium ‘X’.
Answers
To find the refractive index of medium 'Z' with respect to medium 'X' (n(Z/X)), we can use the formula:
n(Z/X) = n(Z/Y) * n(Y/X)
Given:
n(X/Y) = 2/3
n(Y/Z) = 4/3
Plugging these values into the formula, we get:
n(Z/X) = (4/3) * (2/3)
To simplify the expression, we multiply the numerators and denominators:
n(Z/X) = (4 * 2) / (3 * 3)
= 8 / 9
Therefore, the refractive index of medium 'Z' with respect to medium 'X' is 8/9.
In which region is there most likely to be a volcano
A
B
C
D
Answers
So D is your answer
A trolley of mass 2.0kg moving to the right at 0.3 ms-1 collided with a trolley of mass 4.0kg which is at rest. The 4.0kg trolley moves off to the right at 0.7ms-1. Show that the 2.0kg trolley rebounds and moves off at 1.1ms-1
Answers
Answer: To show that the 2.0 kg trolley rebounds and moves off at 1.1 m/s after the collision, we can use the principle of conservation of momentum, which states that the total momentum of a system of objects remains constant if no external forces act on it.
Let's denote the initial velocity of the 2.0 kg trolley as u1 = 0.3 m/s (to the right), the initial velocity of the 4.0 kg trolley as u2 = 0 m/s (at rest), the final velocity of the 2.0 kg trolley as v1 (to be determined), and the final velocity of the 4.0 kg trolley as v2 = 0.7 m/s (to the right).
The momentum of an object is given by the product of its mass and velocity: momentum = mass * velocity.
According to the principle of conservation of momentum, the total momentum before the collision is equal to the total momentum after the collision.
Total initial momentum = Total final momentum
(mass1 * initial velocity1) + (mass2 * initial velocity2) = (mass1 * final velocity1) + (mass2 * final velocity2)
Substituting the given values:
(2.0 kg * 0.3 m/s) + (4.0 kg * 0 m/s) = (2.0 kg * v1) + (4.0 kg * 0.7 m/s)
0.6 kg m/s = 2.0 kg * v1 + 2.8 kg m/s
Rearranging the equation to solve for v1:
2.0 kg * v1 = 0.6 kg m/s - 2.8 kg m/s
2.0 kg * v1 = -2.2 kg m/s
v1 = -2.2 kg m/s / 2.0 kg
v1 ≈ -1.1 m/s
So, the final velocity of the 2.0 kg trolley after the collision is approximately -1.1 m/s (to the left), which indicates that the 2.0 kg trolley rebounds and moves off to the left at 1.1 m/s.