from problem 2,suppose another boy, boy C pulls the heavy cabinet with 5N of force in the same direction with boy A
1. what will be the net foece on the cabinet?
2. will the cabinet move?
3. in what direction will the cabinet move?
Answers
Answer:
Searching in Google I found that in problem 2 were two boys pulling the heavy cabinet, a Boy A pulling in the left direction with 10 N of force, and a boy B pulling in the right direction with 5 N.
1. F = 10 N
2. Yes, it will move.
3. It will move to the left direction of the cabinet (same direction as the boys A and C).
Explanation:
Searching in Google I found that in problem 2 were two boys pulling the heavy cabinet, a Boy A pulling in the left direction with 10 N of force, and a boy B pulling in the right direction with 5 N.
1. Hence, if another boy (C) pull in the same direction as the boy A with 5 N of force, we have:
\( \Sigma F = F_{A} + F_{C} - F_{B} \)
\( \Sigma F = 10 N + 5 N - 5 N = 10 N \)
The net force on the cabinet is 10 N.
2. Yes, the cabinet will move. From point 1 we can deduce that the cabinet will move since the net force on the cabinet is different from zero (10 N).
3. The direction of the motion is the same as the Boys A and C, that is to say, to the left of the cabinet.
I hope it helps you!
The net force acting on an object, is the vector sum of all the forces acting on it
The correct values for the forces acting on the cabinet are;
1. The net force on the cabinet is 10 N
2. Yes, the cabinet will move
3. The cabinet will move in the direction of boy A and boy C
The reason the above values are correct are as follows:
Question: The possible missing part of the question is; In problem 2 boy A is pulling a heavy cabinet with \(F_A\) = 10 N force, and boy B is pulling the same cabinet at the same time and in opposite direction with a force of \(F_B\) = 5 N
The known parameter:
The force with which boy C pulls the heavy cabinet = 5 N
The direction in which boy C pulls the cabinet = The same direction as boy A
Question 1. The net force on the cabinet, \(F_{NET}\) is given as follows;
Taking the direction of the force of boy A as the positive direction, we have;
\(\overset \longrightarrow {F_A}\) = 10 N
\(\overset \longrightarrow {F_B}\) = - 5 N
\(\overset \longrightarrow {F_C}\) = 5 N
\(\overset \longrightarrow {F_{NET}}\) = \(\overset \longrightarrow {F_A}\) + \(\overset \longrightarrow {F_B}\) + \(\overset \longrightarrow {F_C}\)
\(\overset \longrightarrow {F_{NET}}\) = 10 N + (-5 N) + 5 N = 10 N
The net force on the cabinet, \(\overset \longrightarrow {F_{NET}}\) = 10 N
Question 2. Yes: Given that there is a net force acting on the cabinet, according to Newton's first law of motion, in the absence of friction force, the cabinet will move in the direction of the net force of 10 Newton
Question 3. The cabinet will move in the direction of the net fore
The direction of the net force is the direction boy A and boy C are pulling the cabinet
Therefore, the cabinet will move in the direction boy A and boy C are pulling the heavy cabinet
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Related Questions
what is power voltage formula
Answers
The formula for electrical power in terms of voltage is: Power (P) = Voltage (V) x Current (I).
This is also known as Joule's Law, which states that the power (in watts) dissipated by an electrical circuit is equal to the voltage (in volts) across the circuit multiplied by the current (in amperes) flowing through the circuit.
This formula can be rearranged to solve for voltage or current, depending on which quantity is known:
To find voltage: V = P / I
To find current: I = P / V
It is important to note that this formula assumes a direct current (DC) circuit, in which the voltage and current are constant. In an alternating current (AC) circuit, the relationship between voltage, current, and power is more complex and involves additional factors such as the frequency and phase of the AC signal.
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what must the coefficient of static friction be for a car traveling at 115 km/h around the same turn?
Answers
Generally, the coefficient of static friction should be at least 0.7 for a car traveling at this speed, but this value could be higher depending on the specific conditions.
The coefficient of static friction, or μs, is the ratio of the maximum static force that can be applied without causing slipping to the normal force between two surfaces. The coefficient is affected by the surfaces in contact and the material they are made of.
The tires of a car also have an effect on the coefficient of static friction. Tires with a greater tread depth can provide better grip on the road and therefore have a higher coefficient of static friction than tires with a shallow tread. Tire pressure also plays a role, as low pressure can reduce the coefficient of static friction.
The weight of the vehicle is also an important factor. Heavier vehicles tend to have a higher coefficient of static friction, as the greater mass increases the normal force between the car and the surface.
In conclusion, the coefficient of static friction for a car traveling at 115 km/h around a turn depends on several factors, including the road surface, the vehicle's tires, and the vehicle's weight.
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a 25 kg bear slides, from rest, 12 m down a lodgepole pine tree, moving with a speed of 5.6 m/s just before hitting the ground. (u) what change occurs in the gravitational potential ener
Answers
The gravitational potential energy of the bear decreases as the bear slides from top to bottom of the pine tree.
Given that,
Mass of the bear = 25 kg
Speed of the bear = 5.6 m/s
Height from which the bear slides = 12 m
Gravitational potential energy depends on the height of the bear. As the bear slides from top to bottom, the height keeps decreasing gradually. The formula for gravitational potential energy is P.E = m* g* h
where, m is the mass of the bear
g is the acceleration due to gravity
h is the height at which the bear stays
From the above relation, it is clear that, potential energy is directly proportional to the height of the object.
Thus, gravitational potential energy of the bear decreases as the bear slides down the pine tree.
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Thermal energy can be converted into motion by which of the following devices?
A.Microwave oven
B.Solar panel
C.Steam engine
D.Electric toaster
Answers
This is because thermal energy is similar to heat energy. You can think of this like boiling water to create “energy.” This is the same thing boil water to create steam engine!
I hope this is helpful and brainiest if correct!
Which of the following is an example of a contractile source of motion restriction?
Answers
An example of a contractile source of motion restriction is the contraction of muscles in the human body.
Muscles in the human body play a crucial role in generating movement and controlling motion. Through the process of contraction, muscles have the ability to restrict or limit motion at specific joints, acting as a contractile source of motion restriction.
When muscles contract, they exert a pulling force on the bones they are connected to, resulting in movement at the joints. This contraction is achieved through the interaction of actin and myosin filaments within the muscle fibers. When a signal from the nervous system triggers muscle activation, calcium ions are released, allowing the actin and myosin filaments to slide past each other. This sliding motion generates force, causing the muscle fibers to shorten and contract.
By selectively contracting specific muscles, it is possible to restrict or limit motion at certain joints. For example, when you contract your bicep muscle, it restricts the motion at the elbow joint, causing the arm to bend. Similarly, when you contract your quadriceps muscles, they restrict the motion at the knee joint, allowing you to extend or straighten your leg.
In summary, the contraction of muscles serves as a contractile source of motion restriction. Through their ability to generate force and control joint movement, muscles play a crucial role in enabling and regulating various motions in the human body.
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1 point
40 The diagram below shows an electrical circuit made up of a cell and three loads. The
voltage established by the cell and the resistance of each load is marked on the
diagram. Select the current flowing through the 3-ohm load.
www
1 ohm
12V
2 ohms
WWW
3 ohms
www
A. 4 amps
B. 2 amps
C. 5 amps
D. 0.25 amps
SPS106 DOK 3
Answers
Answer:
Option B. 2 A.
Explanation:
The following data were obtained from the question:
Resistance 1 (R1) = 1 Ω
Resistance 2 (R2) = 2 Ω
Resistance 3 (R3) = 3 Ω
Potential difference (V) = 12 V.
Current through the 3 Ω (I3) =?
Next, we shall determine the total resistance of the circuit.
This can be obtained as follow:
Resistance 1 (R1) = 1 Ω
Resistance 2 (R2) = 2 Ω
Resistance 3 (R3) = 3 Ω
Total resistance (R) =.?
R = R1 + R2 + R3
R = 1 + 2 + 3
R = 6 Ω
Next, we shall determine the current flowing in the circuit.
This can be obtained as follow:
From ohm's law,
Voltage (V) = current (I) x resistance (R)
V = IR
Potential difference (V) = 12 V.
Resistance (R) = 6 Ω
Current (I) =?
V = IR
12 = I x 6
Divide both side by 6
I = 12/6
I = 2 A.
Since the circuit is in series connection, therefore, the same current will flow through each resistor.
Therefore, the current through the the 3 Ω load is 2 A.
What is the weight of a 82.1 kg object on Jupiter, where the acceleration due to gravity is 24.5 m/s2?
Answers
The concept of inertia forms the basis for Newton's Third Law of Motion True False
Answers
Given
The concept of inertia forms the basis for Newton's Third Law of Motion
To find
The given statement is true or false
Explanation
The third law of motion states that every action has a equal and opposite reaction
Inertia is the property by virtue of which an object at rest tends to be at rest and object at motion tends to be at motion
Thus both the concept are not similar
Conclusion
The given statement is false
Which gas makes up most of the Earth’s atmosphere?
a. nitrogen
b. oxygen
c. carbon dioxide
d. water vapor
Answers
The gas that makes up most of the Earth's atmosphere is nitrogen (Option A).
What is the Earth's atmosphere made of?Earth's atmosphere is made up of a mix of gases, including nitrogen, oxygen, carbon dioxide, and argon, with trace amounts of other gases. Nitrogen is the most common gas in the Earth's atmosphere, making up about 78% of the total volume. Oxygen is the second-most common gas, accounting for about 21% of the atmosphere. Carbon dioxide, water vapor, and other trace gases make up the remaining 1%. The atmosphere also contains varying amounts of particles such as dust, pollen, and other aerosols.
Thus, the correct option is A.
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What is the equation for the energy of 1 photon when the calculation must be done using the wavelength of light?.
Answers
The equation for the energy of 1 photon when the calculation must be done using the wavelength of light is given below: E = hc/λ Where E is energy, h is Planck's constant, c is the speed of light, and λ is the wavelength of light.
When the wavelength of light is given, the energy of a single photon can be determined using the above formula. According to Planck's equation, energy is directly proportional to frequency and inversely proportional to wavelength. To get the energy of a single photon, multiply the frequency by Planck's constant, and the answer will be given in joules.
If the wavelength of light is given instead of the frequency, the above formula can be used to calculate the energy of a single photon.
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Which of the following is a molecule? *
1.He
2.Be
3.NO
4.Na
Answers
Please help will give brainiest.
Answers
Answer:
Potential Energy.
Explanation:
Kinetic Energy is when an object is moving and it's the speed when it's released but Potential Energy is when the object is stand still/at rest, like the arrow, as the archer holds the arrow back.
Find the slope of the line containing the two points (1,-1) and 7-5,-3). (1 point)
a
-1
b
-1/3
ос
1/3
Od
2
e
3
Answers
Answer:
\(m = \frac{-2}{3}\)
Explanation:
Given
Points: (1,-1) and (-5,3)
Required
Determine the slope
The slope of a line is represented by m and is calculated as thus;
\(m = \frac{y_1 - y_2}{x_1 - x_2}\)
Where
\((x_1,y_1) = (1,-1)\)
\((x_2,y_2) = (-5,3)\)
Substitute these values in the given formula
\(m = \frac{-1 - 3}{1 - (-5)}\)
\(m = \frac{-1 - 3}{1 +5}\)
\(m = \frac{-4}{6}\)
Simplify fraction
\(m = \frac{-2}{3}\)
Hence, the slope of the line is \(m = \frac{-2}{3}\)
Answer:
The answer is 1/3
Explanation:
Change in y/Change in x
-2/-6=1/3
The neighborhood joker comes up to you and is really on a roll this morning. After several “good ones” they then say “OK so you’re taking physics, right? Here’s one – if the acceleration of gravity is 9.8 m/s2 then why isn’t everything accelerating? HAHAHA”. Being a dedicated student you give this question some real thought and come up with a reasonable response. You might say:
Answers
One physics professor talking produces a sound intensity level of 51 dB .
Part A
It's a frightening idea, but what would be the sound intensity level of 100 physics professors talking simultaneously?
Express your answer to two significant figures and include the appropriate units.
β =
Answers
Answer:One physics professor talking produces a sound intensity level of 52 dB. It’s a frightening idea, but what would be the sound intensity level of 100 physics professors talking simultaneously?
The intensity level of 100 professors talking simultaneously is 70dB
Explanation:
3. A train is 120 m long. Sydney was standing 200 m from the front of the train when it
began to accelerate from rest. She noticed that the front of the train was moving at 8.00
m/s when it passed her. How fast would the back of the train be going when it passed
her?
Answers
Answer:
Below
Explanation:
Find acceleration first
vf = vo + at (starts from rest so vo = 0)
8 = 0 + at
8 = at
d = vo t + 1/2 a t^2 (substitute 8 in for 'at')
200 = 0 t + 1/2 (8) t
200 / 4 = t = 50 seconds for front of train to pass her at 8 m/s
acceleration = change in velocity / change in time = 8 / 50 = .16 m/s^2
Back of train has to travel 120 meters at initial v = 8 m/s and accelerating at .16 m/s^2 :
d = vo t + 1/2 a t^2
120 = 8 t + 1/2 ( .16 ) t^2
.16t^2 + 8t - 120 = 0 Quadratic Formula shows t = 13.25 s
vf = vo + a t
vf = 8 m/s + .16 m/s^2 ( 13.25 s) = 10.1 m/s
Name the two poles of a magnet
What is meant by magnetism?
Answers
Can you have curly hair even though your hair is short and soft? (Women)
Answers
Which resistors in the circuit are connected in series?
A. A and D
B. A and B
C. Cand D
D. B and C
Answers
Answer:
b and c
Explanation:
you had it correct :)
Answer:
It's C and D.
Explanation:
if the moon is less massive than the earth, then an object will weigh less on the moon than it does on the earth. p2: the moon is considerably less massive than the earth. c: consequently, objects weigh less on the moon.
Answers
The statement "if the moon is less massive than the earth, then an object will weigh less on the moon than it does on the earth., 2: the moon is considerably less massive than the earth. c: consequently, objects weigh less on the" are correct.
The moon of the Earth is much lighter in mass than the planet itself. In addition to being smaller than Earth, the Moon is also only approximately 60% as dense. A human weighs less on the Moon because there is less gravitational attraction there than there is on Earth.
Since the moon is less massive than the Earth (as mentioned in premise 2), an object will indeed weigh less on the moon than it does on Earth. This is because the gravitational force acting on an object is directly proportional to the mass of the celestial body it is near. Since the moon has a lower mass, its gravitational force is weaker, causing objects to weigh less there (conclusion).
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Which best describes the runners? Daniela had a 5 meter head start, and Leonard caught up to her at 25 meters. Daniela ran faster than Leonard through the entire race. Daniela gave Leonard a 5 meter head start and caught up to him at 25 meters. Daniela ran slower than Leonard, but she went faster at the end.
Answers
Daniela had a 5-meter head start and Leonard caught up to her at 25 meters best describes the runners. Option A is correct.
What is the distance?Distance is a numerical representation of the distance between two objects or locations.
The distance can refer to a physical length or an estimate based on other factors in physics or common use. |AB| is a symbol for the distance between two points A and B.
The graph shows that Daniela had a 5-meter head start and Leonard caught up to her at 25 meters
Hence option A is correct.
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Answer:
Daniela had a 5 meter head start, and Leonard caught up to her at 25 meters.
Explanation: took the unit test
what is the angular speed of a rotating object that completes 12 revolutions in 35 s?
Answers
The angular speed of a rotating object that completes 12 revolutions in 35 seconds is approximately 0.342 radians per second.
Angular speed is a measure of how quickly an object rotates around a fixed axis. It is defined as the angle swept by the object per unit of time. In this case, the object completes 12 revolutions in 35 seconds. To find the angular speed, we need to convert the number of revolutions into radians. Since one revolution is equal to 2π radians, 12 revolutions would be equal to 24π radians. Dividing this by the time of 35 seconds gives us an angular speed of approximately 0.342 radians per second. This means that the object rotates at a rate of 0.342 radians for every second of time.
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Swimming in a pool requires that you push back on the water in order to go
forward.
Newton's 1st Law
Newton's 2nd Law
Newton's 3rd Law
Law of Universal Gravitation
Law of Conservation of Momentum
Answers
Swimming in a pool requires that you push back on the water in order to go forward is Newton's 3rd Law.
What is Newton's 3rd Law?
Newton's 3rd Law, also known as the law of action and reaction, states that for every action, there is an equal and opposite reaction. This means that if an object A exerts a force on object B, then object B will exert an equal and opposite force on object A.
For example, if you push against a wall, the wall will push back on you with the same force in the opposite direction. This is because every force is a result of an interaction between two objects, and each object exerts an equal and opposite force on the other.
This law is important in understanding how objects interact with each other and is fundamental to many areas of physics, including mechanics, fluid dynamics, and electromagnetism.
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What factor affects the speed of the motion of a roller coaster the most?A.massB.heightC,Size of the wheels D.Spring constant
Answers
Height
Option B is correct
Explanation:The roller coaster is a railway with a large height and steep inclines that is basically found in the amusement park for carrying a train of people for a fun ride.
The speed of the roller coaster is determined by a number of factors such as the energy input, drag force, temperature, mass, etc.
The height at which the roller coaster is released when launched determines greatly the speed of the motion of the roller coaster
a train is moving in the positive direction down a track. First the train speeds up, and then it slow what is its acceleration?
Answers
If the train first speeds up and then slows down, its acceleration will:
Be positive when it speeds upBe negative when it slows downMore specifically:
When the train first speeds up, its velocity (speed and direction) is increasing. According to the definition of acceleration, when velocity is increasing, acceleration is positive.
So during the speeding up portion, the train's acceleration will be positive.
Then, when the train begins to slow down, its velocity is decreasing. Based on the definition of acceleration, when velocity is decreasing, acceleration is negative.
So during the slowing down portion, the train's acceleration will be negative.
Since the question asks for the acceleration in general terms, without specifying a particular time, the overall acceleration would be:
First positive, when the train speeds up
Then negative, when the train slows down
In summary:
When an object speeds up, its acceleration is positiveWhen an object slows down, its acceleration is negativeSince the train first speeds up and then slows down, its acceleration will first be positive, then negativeThe overall acceleration is not specified as a single value, but rather changes from positive to negative as the train's speed changeswhat is the purpose of the calibration curve in part v of the electrochemical measurement procedure?
Answers
The purpose of the calibration curve in Part V of the electrochemical measurement procedure is to establish a relationship between the measured signal and the analyte concentration.
In electrochemical measurements, the calibration curve plays a crucial role in quantifying the concentration of the analyte of interest. It involves plotting a series of known analyte concentrations against their corresponding measured signals. By analyzing the resulting curve, one can determine the relationship between the signal response and the analyte concentration. This relationship is typically linear or follows a specific mathematical model. The calibration curve serves as a reference to convert the measured signals obtained from unknown samples into their corresponding analyte concentrations. It allows for accurate and reliable quantitative analysis by providing a means to interpolate or extrapolate the analyte concentration based on the measured signal.
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DUE RIGHT NOW
IT WOULD BE NICE IF YOU EXPLAIN TO
Answers
Answer: 0-3 minutes
Explanation:
On the side of the graph, it shows you the distance the car was moving. As you know, MPH (miles per hour) shows how fast an object is moving, meaning that the car was going around 0-1 mph around minutes 0-3. Just make sure you know how to read a graph and this will become an easy question for you :)
Answer:
5-8 minutes the car isn't traveling. The g above is wrong
Explanation:
Which of the following metals reacts with oxygen and acids but is not very reactive with water?
A. Calcium
B. Bagnesium
C. Copper
Answers
Calcium is reactive with oxygen, acid, and water. Copper is not reactive with water as well as with acids, whereas magnesium is reactive with acid but reactive with water.
One or more chemicals (the reactants) are changed into one or more other compounds during a chemical reaction (the products).Substances are made up of chemical components or chemical elements.
Each calcium atom donates a pair of electrons to an oxygen atom during the interaction between calcium and oxygen to create calcium oxide.
When calcium reacts with hydrochloric acid, it releases bubbles of hydrogen gas, and when large chunks of calcium react with hydrochloric acid, it releases hydrogen gas. Calcium in reaction with water produces calcium hydroxide and hydrogen gas
When magnesium and oxygen interact, they produce light that is so strong that it temporarily impairs your vision. Magnesium burns so brilliantly because it produces a lot of heat while doing so.
Magnesium reacts with hot water or water vapor to produce hydrogen gas and magnesium hydroxide.
Acid does not react with copper. Metals such as lead, copper, silver, and gold do not react with water at all.
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what of the average speed from 4s from 8s
A.0.5m/s
B.1m/s
C.2m/s
D.3m/s
E.9m
Answers
=====================================================
Explanation:
At 4 seconds, the distance is 8 meters. Note the point (4,8)
At 8 seconds, the distance is 10 meters. The point here is (8,10)
Find the slope of the line through (4,8) and (8,10)
m = (y2-y1)/(x2-x1)
m = (10-8)/(8-4)
m = 2/4
m = 1/2
m = 0.5
The average speed on this interval is 0.5 m/s
-----------------
Another way to look at it:
We've gone from 8 meters to 10 meters, so that's a change of y = 2 meters.
During this, the time has changed from 4 seconds to 8 seconds, which is a difference of x = 4 seconds.
The velocity is the rate of change of distance over time
velocity = (change in distance)/(change in time) = y/x = 2/4 = 0.5 m/s
general relativity deals withmultiple choicestationary reference frames.reference frames moving at constant velocities.accelerated reference frames.
Answers
General relativity deals with accelerated reference frames.
General relativity, developed by Albert Einstein, is a theory of gravitation that addresses the effects of gravity on spacetime. It deals with accelerated reference frames because gravity can be seen as a form of acceleration. Unlike special relativity, which deals with reference frames moving at constant velocities, general relativity considers frames where acceleration is present.
In these frames, the curvature of spacetime is determined by the presence of mass and energy, causing objects to follow geodesics (the shortest path between two points in spacetime). This accounts for phenomena such as time dilation and the bending of light around massive objects.
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