The total chemical energy transformed in this exercise is 580 kJ.
Chemical energy is the strength of chemical substances this is launched after they undergo a chemical response and transform into different substances. a few examples of garage media of chemical power consist of batteries, meals, and gas.
Chemical power is strength stored within the bonds of atoms and molecules. Batteries, biomass, petroleum, natural fuel, and coal are examples of chemical electricity. Chemical energy is converted to thermal strength whilst people burn wood in a hearth or burn gasoline in a vehicle's engine.
Calculation:-
time, t = 20min = 1200s
average metabolic power of cyclist = 480 W
metabolic energy can be calculated as
ΔE = PΔt =480 *1200 = 576000 J ≈ 580000 J = 580 kJ
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What is the number of paths through which electricity can flow in a series circuit?.
A parallel circuit has more than one path for the current to travel than a series circuit, which has just one.
Why is it called series circuit?The same voltage applied to all components when they are connected in parallel along numerous routes. A series circuit is one with all of its components connected in series, whereas a parallel circuit is one with all of its components connected in parallel.
What makes a series circuit effective?A series circuit offers exactly single route for electric current to go between any two places. The benefit of these circuitry is that they make every component extremely dependent on another component. This implies that removing one component causes the other components to all turn off.
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what is the connection between the variations in the cmb and the large scale structure and dark matter
Because primordial baryonic density fluctuations would have to be extremely large for the vast majority of galaxies we observe in the cosmos to emerge without dark matter, the adiabaticity of CMB fluctuations actually leads to dark matter.
The smooth early Universe and the bumpy older Universe are connected by the CMB. The CMB is fairly homogeneous overall, yet there are small temperature differences or anisotropy. These temperature variations match changes in the universe's matter density at the time the CMB formed.
Up to 90% of the matter in the cosmos may be dark matter or invisible matter. Many astronomers and physicists have proposed a number of explanations for this dark matter. It might just be common material, like dust strewn over the universe, frigid gas, big or small black holes, or ultra-faint stars that produce or reflect too little radiation for our equipment to detect. It might possibly be made up of strange, exotic particles that we are unable to perceive.
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an air sample contains 3.5 x 10-6 g/l (grams per liter) of carbon monoxide. how would you express this concentration of carbon monoxide in lb/ft3 (pounds per cubic foot)? note: 1 pound
2.225 x [tex]10^{-7}[/tex] lb/[tex]ft^3[/tex] concentration of carbon monoxide in lb/[tex]ft^{3}[/tex]
Conc. of CO in air = 3.5x[tex]10^{-6}[/tex] [tex]\frac{g}{L}[/tex]
454g = 1 lb
1g = [tex]\frac{1}{454}[/tex] lb
3·5 × [tex]10^{-6}[/tex] g = 1/454 x 3.5 x [tex]10^{-6}[/tex] lb
= 0.007709x[tex]10^{-6}[/tex] lb
= 7.70 x [tex]10^{-9}[/tex] lb
1 L = [tex]10^{3}[/tex] [tex]cm^{3}[/tex]
=[tex]10^{3}[/tex] x [tex](0.3930) ^3[/tex]
=[tex]10^{3}[/tex] x [tex]0.00069 in^3[/tex]
=[tex]10^{3}[/tex] x 0.060 x [tex](0.083ft) ^3[/tex] (1 in = 0.0833ft)
=[tex]10^{3}[/tex] x 0.060 x 0.000571 [tex]ft^3[/tex]
=[tex]10^{3}[/tex] x 6.06 x [tex]10^{-2}[/tex] x 5.71 x [tex]10^{-4}[/tex] [tex]ft^3[/tex]
=34.60 x [tex]10^{-3}[/tex] [tex]ft^3[/tex]
So, 3.5 x[tex]10^{-6}[/tex] g/L = 7.70 x [tex]10^{-9}[/tex] lb / 34.60 x 10
=0.2225 x [tex]10^{-6}[/tex] lb/[tex]ft^3[/tex]
=2.225 x [tex]10^{-7}[/tex] lb/[tex]ft^3[/tex]
Colorless, lethal, odorless, tasteless, and combustible gas with the chemical formula CO, carbon monoxide is a little less dense than air. One carbon atom and one oxygen atom bound together by three bonds make up carbon monoxide. The oxocarbon family's simplest molecule is this one. The carbon monoxide ligand in coordination complexes is referred to as carbonyl. It is a crucial component in numerous industrial chemistry processes.
There are a lot of biological and environmental factors that produce a lot of carbon monoxide as well. It is crucial for the creation of numerous compounds, such as medicines, fragrances, and fuels.
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The graph shows a truck's velocity over time.
Velocity (m/s)
What is the truck's acceleration between 5 and 10 seconds?
A. 3 m/s²
B. 2 m/s²
C. 0 m/s²
OD. 6 m/s²
The Trucks acceleration between 5 and 10 seconds is 0 m/s². Option C.
Solution:
v = 30m/s (final velocity)
u = 30m/s (initial velocity)
t = 10-5= 5s
a = v-u/t
a = 30-30/5
a = 0 m/s²
The main causes of poor acceleration are air and fuel issues and sensor issues. However, mechanical problems can also cause poor performance. Easy acceleration stay still don't accelerate. Progressive Acceleration Gradually accelerates to the desired speed. Thrust Acceleration Move quickly and gain speed.
Rate of change of velocity over time for both acceleration velocity, and direction. A point or object moving in a straight line accelerates as it accelerates or decelerates. Circular motion accelerates because the direction is always changing even if the speed is constant. The gas pedal in your car can actually increase your speed.
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WILL GIVE BRAINLIEST!!!! The model represents how electromagnetic radiation transmits energy. f What does the model show? A. An electric field and a magnetic field vibrating parallel to each other B. Two light waves vibrating parallel to each other C. An electric field and a magnetic field vibrating perpendicular to each other D. Two light waves vibrating perpendicular to each other
This model represents how electromagnetic radiation transmits energy and it shows: C. an electric field and a magnetic field vibrating perpendicular to each other.
What is an electromagnetic energy?In Science, an electromagnetic energy can be defined as form of energy that is primarily carried by electromagnetic waves such as:
Gamma raysx-rays.This ultimately implies that, an electromagnetic energy simply refers to a form of energy that typically moves as particles at the speed of light, which is about three hundred million meters per seconds (3 × 10⁸ m/s) and they are always perpendicular to each other.
Based on the model shown in the image attached below, we can logically deduce that a single light wave travels away from a source within an electric field and a magnetic field that are vibrating perpendicular to each other.
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You are an electrician on the job. The electrical blueprint shows that eight 500-w lamps are to be installed on the same circuit. The circuit voltage is 277 v and is protected by a 20-a circuit breaker. Assuming that the load is continuous, is a 20-a circuit large enough to carry this load?.
The circuit is large enough to sustain the load and has an allowed current load greater than the total current flowing through it. The maximum continuous use current for the circuit is 16 A, or 80% of 20 A.
what's the current equation for physics?How much current is flowing can be calculated to use the electric current formula I=V/R. Ohm's Law serves as the foundation for what is known as the "current equation." I, V, and R are the variables that stand in for current, voltage, and resistance, respectively.
Why do current and electrons exist?Although they move in the same general direction, current and electrons move in different paths. In both directions, electrons can go from a negative to a positive potential. Current is calculated as the quantity of electrons passing through the cross section of a conductor in a second.
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Here is a table showing the temperatures of some objects and their surroundings. Which object(s) will change temperature fastest? C B A Object A B C Temperature of object (°C) 90 10 60 Temperature of surroundings (°C) 30 18 -12
The temperature of object 60 and temperature of surrounding -12 in °C will have fastest change in temperature.
We need to know about the heat rate to solve this problem. The heat rate depends on the conductivity, surface area, temperature gap, and thickness. It can be written as
H = k . A . ΔT / L
where H is heat rate, k is conductivity, A is surface area ΔT is temperature gap and L is the thickness.
The greater temperature gap leads the object to change its temperature easily.
From the question above, the greater temperature gap is 60 and (-12) in °C where
ΔT = 60 - (-12)
ΔT = 72 °C
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ball a has half the mass and eight times the kinetic energy of ball b. what is the speed ratio vava / vbvb ?
Ball b has eight times more kinetic energy than ball a, which has half its mass. The speed ratio is 4.
What exactly does kinetic energy mean?Force must be applied to object in order to accelerate. To apply a force, we must work hard. Because energy has been transferred to the object, it will be moving at a new, constant speed once the operation is finished.
Given,
Two balls a and b
and the mass of ball an is half that of ball b..
Kinetic energy of ball a is eight times kinetic energy of ball b.
mₐ = [tex]\frac{1}{2} m_{b}[/tex]
KEₐ = 8 KE[tex]_{b}[/tex]
Kinetic energy is measured by,
KE = 1/2 mv²
KE ratios for both balls a and b are calculated,
∴ [tex]\frac{KE_{a} }{KE_{b} }[/tex] = [tex]\frac{1/2 m_{a} v_{a}^{2} }{1/2 m_{b} v_{b} ^{2} }[/tex]
[tex]\frac{8 KE_{b}}{KE_{b} }[/tex] = [tex]\frac{1/2 (1/2m_{b}) v_{a}^{2} }{1/2 m_{b} v_{b} ^{2} }[/tex]
16 = [tex]\frac{v_{a} ^{2} }{v_{b} ^{2} }[/tex]
[tex]\frac{v_{a} }{v_{b} }[/tex] = 4/1
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Atronaut in training i ubjected to extreme acceleration force by the centripetal force in againt centrifuge. The radiu of the centripetal i approximately 5m. A) calculate the approximate centripetal force of an atronaut of ma 80kg if the centrifuge rotate once even 2econd. B) approximately how many time greater than the atronaut weight i the force
In a large centrifuge, the centripetal force accelerates the astronaut to a very high speed of 49.3 francs ms2 and 5.
Solution:
A. a c = omega2 r = frac4 pi 2 r, T2 = 49.3 frac ms2, and a c = 2 r = T 2
4π \s2 \s r \s \s = 49.3 m\s²
B. frac = k = F aP=\frac{a c}
g = 5.k = P \sF \s\s = \sg \sa \ \s = 5.
Centripetal force is the component of force acting on a body in curvilinear motion and directed towards the axis of rotation or center of curvature. Centrifugal force is the simulated force of circular motion acting along the radius and away from the center of the circle. The centrifuge simulates weightlessness and gravity aboard the space station, allowing substances such as plasma, red blood cells, and white blood cells to be separated from blood samples.
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Light-rail systems have been tried all over the country, and they've failed. Although the people who support them have noble intentions, sadly, the system the city proposes is doomed to fail as well. People simply enjoy their cars too much to endure any inconvenience for the sake of the environment. And I don't blame them. As the owner of Jake's Used Cars and Trucks, I have seen the joy and freedom car ownership brings people. Americans will never abandon that feeling for the sake of being slightly better citizens. I believe it is far more responsible to purchase a high-quality car with good fuel efficiency. Building an entire light-rail system from the ground up, as the city proposes to do, will be more wasteful in the end if nobody uses it — not to mention that it will take years to build and cost taxpayers millions of dollars. I encourage all city residents to vote against the light-rail system on May 1. Which statement best describes the author's point of view? A. The author thinks Americans should be more environmentally responsible. B. The author wants citizens to visit his car dealership. C. The author is opposed to the light-rail project. D. The author would like the city to implement its project successfully.
The author's best argument against the light-rail project is that it is unnecessary. A combination of trams characterizes light rail transit, a type of passengers urban rail transportation.
What does light rail accomplish?In big cities, LRT can function as an independent organization or as a complement to heavy rail and passenger rail systems. The fastest and most economical interurban transport in a city is provided by LRT.
What does light rail accomplish?Heavy rail systems can be supplemented by LRT, and commuter rail networks in big cities can function independently. In a metropolitan area, LRT offers the fastest and most affordable interurban transportation service. It is intended to close a considerable gap between light rail and local buses.
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Which change will always take place in nuclear fusion?(1 point)
Responses
A nucleus with a greater mass than any of the reactants will be produced.
A nucleus with a greater mass than any of the reactants will be produced.
The total charge will be less than before the fusion took place.
The total charge will be less than before the fusion took place.
The total charge will be greater than before the fusion took place.
The total charge will be greater than before the fusion took place.
A nucleus with a smaller mass than any of the reactants will be produced.
The change that will take place in nuclear fusion is a nucleus with a greater mass than any of the reactants will be produced.
What is Nuclear fusion?The process of nuclear fusion, in which light elements interact to create heavier elements (up to iron). If the interacting nuclei are from low-atomic-number elements, like hydrogen (atomic number 1) or its isotopes deuterium and tritium, significant amounts of energy are released.
Thermonuclear weapons, or hydrogen bombs, which were created in the decade immediately following World War II, were the first to utilize the tremendous energy potential of nuclear fusion. There are two primary types of fusion reactions: those that maintain the number of protons and neutrons and those that entail converting protons and neutrons.
Because of a crucial aspect of nuclear matter called the binding energy, which can be released through fusion or fission, fusion reactions between light elements and fission reactions that split heavy atoms both release energy.
Therefore, a nucleus with a greater mass than any of the reactants will be produced when nuclear fusion takes place.
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A solid silver spoon has a mass of 65.1g.
The volume of the spoon is 6.2cm³.
Calculate the density of silver.
Answer:
10.5
Explanation:
Density= Mass/volume
= 65.1/6.2
= 10.5
a bicycle has a momentum of 15 kg*m/s. what momentum would the bicycle have if it had 8 times the mass and was moving with 0.46 times the velocity?
The momentum the bicycle would have if it had 8 times the mass and was moving with 0.46 times the velocity is 58.88 kg m / s
p = m v
p = Momentum
m = Mass
v = Velocity
Initially,
p = 15 kg m / s
m v = 15
Finally,
m' = 8 m
v' = 0.46 v
p' = 8 m * 0.46 v
p' = 3.68 m v
p' = 3.68 p
p' = 3.68 * 16
p' = 58.88 kg m / s
Therefore, the momentum the bicycle is 58.88 kg m / s
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a crate of eggs is located in the middle of the flat bed of a pickup truck as the truck negotiates an unbanked curve in the road. the curve may be regarded as an arc of a circle of radius 43-m. if the coefficient of static friction between crate and truck is 0.53, what must be the maximum speed of the truck if the crate is not to slide?
The maximum speed of the truck if the crate is not to slide if the coefficient of static friction between crate and truck is 0.53 is 14.95 m / s
Fc = m v² / r
f = μ N
Fc = Centripetal force
m = Mass
v = Velocity
r = Radius
f = Frictional force
μ = Co-efficient of friction
N = Normal force
∑ Fy = 0
N - m g = 0
N = m g
μ = 0.53
r = 43 m
∑ Fx = m ax
f = m ac
μ m g = m v² / r
0.53 * 9.8 = v² / 43
v² = 223.34
v = 14.95 m / s
Therefore, the maximum speed of the truck if the crate is not to slide is 14.95 m / s
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what is the maximum total force exerted on a astronaut by her seat during the launch of a space shuttle?
The maximum total force exerted on an astronaut by her seat during the launch of a space shuttle is about 3gs.
The weight of the cargo a rocket is carrying determines how much g-force it can generate. A manned mission is constrained by what a human being can withstand. High g-forces can harm the body, and at about 9 gs, most people pass out as their blood struggles to get to their brains. During a rocket launch, astronauts typically feel a maximum g-force of about 3gs. The force of gravity is equivalent to three times what people ordinarily experience on Earth, but the passengers can withstand it. Astronauts undergo high-g training, don g-suits, and need to be properly outfitted.
When a mass accelerates, there is a force (F=ma). While moving at any speed, there is no inherent force that is perceived. Whenever velocity changes, force is sensed. Since the definition of acceleration is the change in velocity over time (dv/dt), we can rewrite the force equation as F=m(dv/dt).
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A 5.00-N salmon swims 20.0 m upstream against a current that provides a
resistance of 1.50 N. This portion of the stream rises at an angle of 10.0° with
respect to the horizontal. How much work is done by the salmon against
the current?
-30 J of work is done by salmon against the current.
What is work done?In order for an object to move, it must be converted into energy. The transfer of energy can be done in a force way. This amount of energy transferred by the force that moves the object is called work done.
The work done when the force and displacement are opposite is called negative work. example: When you throw an object up, gravity acts downwards and displacement upwards.
W = F × s × cosθ
Where, W = work done
F = force against which work is done (1.5 N)
s = distance travelled (20 m)
θ = 180° since the movement is against the stream of river
W = 1.5 × 20 × cos180
W = 1.5 × 20 × (-1)
W = -30 J
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a 20.0 cm wrench is used to generate a torque at a bolt. a force of 50 n is applied at the end of the wrench at an angle of 60.0 degrees to the wrench. the torque generated at the bolt is
A 20.0 cm wrench is used to generate a torque at a bolt. A force of 50 n is applied at the end of the wrench at an angle of 60.0 degrees to the wrench. the torque generated at the bolt will be 8.6 N-m
Torque = F d sin(theta)
= 50 * 0.2 * sin ( 60 )
= 8.6 N-m
Torque will be 8.6 N-m
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Mike runs horizontally off a cliff at 6.5m/s and lands in the water 15m from the base of the cliff how long does it take mike to hit the water?
Answer:
Explanation:
Given:
V = 6.5 m/s
D = 15 m
_________
t - ?
t = D / V = 15 / 6.5 ≈ 2.3 s
\ta car of mass 2000 kg moves 600 m due east in 10 seconds. what is the average momentum of the car during those 10 seconds?
The average momentum of the car moving due east in 10 seconds is
12 x 10⁴ kgm/s.
the mass of the car, m = 2000kg
distance covered by a car in each direction, s = 600m
time taken by the car, t = 10 second
The velocity of the car = ds/dt
velocity = 600/10
velocity = 60m/s
momentum of the car is calculated as :
P = mv
where
P = momentum of the body
m = the mass of car
v = the velocity of car
P = 2000 x 60
P = 120000 kgm/s
P = 12 x 10⁴ kgm/s
The average momentum of the car moving due east in 10 seconds is
12 x 10⁴ kgm/s.
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A steel wire in a piano has a length of 0.700 0 m and a
mass of 4.300 x 10^-3 kg. To what tension must this wire
be stretched so that the fundamental vibration corre-
sponds to middle C ( f^c = 261.6 Hz on the chromatic musical scale)?
The magnitude of tension must be 3.64 N on the wire.
What is frequency?In physics, frequency is the number of waves that pass a fixed point in a unit of time as well as the number of cycles or vibrations that a body in periodic motion experiences in a unit of time.
Given parameters:
Length of the piano wire: L = 0.700 m.
Mass of the piano wire: m = 4.300 × 10⁻³ kg.
Fundamental frequency of it: f = 261.6 Hz.
We have to find: the tension applied on it T = ?
We know that:
Fundamental frequency is given by:
f = (2π/L)√(T/m)
rearranging the formula, we get:
T = (fL/2π)²m
= ( 261.6 × 0.7000/2π)²× 4.300 × 10⁻³N.
=3.64 N.
Hence, The magnitude of tension must be 3.64 N on the wire.
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You see a flash of lightning, and then 15 seconds later you hear thunder. How far away is the lightning?.
If you calculate the seconds between the lightning strike and divide that number by 5, you'll find the distance in miles: 5 seconds = 1 mile, 15 seconds = 3 miles, and 0 seconds = very close.
What is a lighting flash?The return stroke happens when a charged president makes contact with the ground. The quick discharge the electricity that has built up on the leader is all that happens during the return stroke. This discharge resembles a lightning bolt to us.
What causes lightning to flash?A stepped leader, or a channel of negative charges, travels towards the ground during the beginning of a cloud-to-ground lightning strike. The stepped leader keeps moving downhill in a sequence of steps that really are each between 50 and 100 meters long. The stepped leader might take many different turns.
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A 873-kg (1930-lb) dragster, starting from rest completes a 405.0-m (0.2531-mile) run in 4.913 s. If the car had a constant acceleration, what would be its acceleration and final velocity?
Answer:
Acceleration: approximately [tex]33.56\; {\rm m\cdot s^{-2}}[/tex].
Final velocity: approximately [tex]164.9\; {\rm m\cdot s^{-1}}[/tex].
Explanation:
Let [tex]x[/tex] denote displacement. Let [tex]a[/tex] denote the acceleration of the vehicle. Let [tex]t[/tex] denote the duration of the acceleration. Let [tex]u[/tex] denote the initial velocity of the vehicle.
In this question, it is given that [tex]x = 405.0\; {\rm m}[/tex], [tex]t = 4.913\; {\rm s}[/tex], and [tex]u = 0\; {\rm m\cdot s^{-1}}[/tex] since the vehicle started from rest. Acceleration [tex]a[/tex] is to be found.
Since acceleration [tex]a[/tex] is constant, apply the SUVAT equation [tex]x = (1/2)\, a\, t^{2} + u\, t[/tex] and solve for acceleration [tex]a[/tex].
Note that since [tex]u = 0\; {\rm m\cdot s^{-1}}[/tex], the SUVAT equation becomes [tex]x = (1/2)\, a\, t^{2}[/tex].
Rearrange and solve this equation for [tex]a[/tex]:
[tex]\begin{aligned}a &= \frac{2\, x}{t^{2}} \\ &= \frac{2 \, (405.0\; {\rm m})}{(4.913\; {\rm s})^{2}} \\ &\approx 33.558\; {\rm m\cdot s^{-2}}\end{aligned}[/tex].
Let [tex]v[/tex] denote the velocity of the vehicle after the acceleration. Apply the SUVAT equation [tex]v = u + a\, t[/tex] to find this velocity:
[tex]\begin{aligned}v &= u + a\, t \\ &= (0\; {\rm m\cdot s^{-1}}) + (33.558\; {\rm m\cdot s^{-2}})\, (4.913\; {\rm s}) \\ &\approx 164.9\; {\rm m\cdot s^{-1}}\end{aligned}[/tex].
why does the atomic structures determine the properties of a substance?
pls don't search it up i just tried that and it's a different question from mine
which determines whether an atom will receive, lose, and share electrons with other atoms in order to become stable.
Describe three electron-related facts.The outside of the nucleus is surrounded by electrons, which are negatively charged particles. Scientists may have trouble observing them since they rotate so quickly. The tiniest particles in an atom, with 2000 of them fitting into a proton, they are drawn to the protons' positive charge.
Why do electrons matter so much?
In addition to participating in gravitational, electromagnetic, and weak interactions, electrons are crucial for a variety of physical processes, including electricity, magnetism, chemistry, and thermal conductivity.
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an object is thrown from an initial height of 45 m with initial speed of 50 m/s. how far does the object travel horizontally before striking the ground?
The object travels horizontally before striking the ground is 1 sec.
Calculation:-
Height = 45 m
speed = 50 m/s
S = ut + 1/2at²
45 = 50×t + 1/2 × 9.8 × t²
T = 1 sec
The rate of trade of function of an item in any path. speed is measured as the ratio of distance to the time in which the space is turned covered. the pace is the gap traveled in line with a unit of time. it is how fast an object is transferring. The pace is the scalar amount that is the significance of the rate vector. It would not have a route. higher pace means an item is transferring faster.
Speed is the gap of a shifting object in a given quantity of time. velocity is a degree of the way speedy something is moving. The common velocity of an object in a sure time is the gap the item traveled divided by the point. The average velocity of the answer is described as the average amount of time it takes for a call center to answer a smartphone name from a patron. protected on this metric is the time a caller waits in a queue.
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calculate the likely number of poles if the machine is not operating significantly from the synchronous speed.
The equation is n = 60 x f /p, where p is the number of pairs of poles per phase, f is the supply frequency, and n is the synchronous speed.
What is a synchronized speed visit?The rotating field AC motor's synchronous speed is a crucial variable. The frequency and variety of magnetic poles are what determine it. The term "synchronous motor" refers to a group of motors that operate at the same speed.
Why is synchronous speed called such and what does it mean?A revolving magnetic field that spins in both space and time is created when the stator winding of the an induction motor receives three phases that are electrically spaced 120 degrees apart. Synchronous motor speed refers to the rate at which the magnetic field is revolving.
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PLEASE ASAP HELP WHO EVER IS FIRST I WILL GIVE THANKS LIKE AND POINTS AND STUFF PLEASE ALSO IT HAS TO BE CORRECT
Answer:
its c i had this as home work and got a 100%
Explanation:
Answer:
reupload the photo please
DESCRIPTION
A crane raises a container with
a mass of 1,865 kg to a height
of 17.5 m. What is the GPE of
the container?
when a train increases its velocity, it momentum dreceases?
Answer:
Momentum increases
Explanation:
Momentum = m * v so if mass or velocity increase , so does the momentum
A worker pushes a 50kg box on a level floor at constant velocity and moves a distance of 10 m.
a.) If the person pushes it with a force of 850N, what must be the magnitude and the direction of the frictional force on the surface?
b.) How much work is done on the box (1) by the worker and (2) by friction?
c.) How much work is done by the (1) normal force and (2) by gravity?
d.) What is the total work done on the box?
Pls pakisagutan po ng MAAYOS.
867 Newton must be the magnitude and the direction of the frictional force will be opposite to the surface.
F=µN
µ=F/N
µ=50×10÷50×9.8
µ=1.02
f=µF
f=1.02×850N
f=867 N
IIn mechanics, a force is any action that attempts to sustain, modify, or deform a body's motion. It is common practice to utilize Isaac Newton's three laws of motion to illustrate the idea of force in his Principia Mathematica (1687).
Newton's first law states that in the absence of an external force, a body will continue to be in either its resting or equally moving condition along a straight path. According to the second law, when an outside force applies on a body, the body accelerates (changes velocity) in the force's direction.
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What is generally found behind the drawbridge of a castle?.
An open area between the two buildings is generally found behind the drawbridge of a castle.
A drawbridge is basically a long bridge made up of wood or sometime metal at the entrance of a castle or tower surrounded by a moat. It is basically for the leading to a gateway, capable of being raised or lowered to either restrict entry into the castle or allow someone in it, and often spanned a ditch or moat.
Depending on how big the castle is, when someone go over the drawbridge he or she can generally see an open area, between the buildings. And if we talk about the mechanism behind the drawbridge of the castle a typical arrangement would have the drawbridge immediately outside a gatehouse, consists of a wooden deck with single edge pivoting at the gatehouse threshold, so that in the heighted position the bridge would be flush against the gate, forming passage to entre.
Hence, an open area between the two buildings is generally found behind the drawbridge of a castle.
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