Heat transfer (in j) occurs from a system Q = - 156 J.
Briefly:-We use thermodynamics principles in this situation. There are already obtained relationships for intense properties like internal energy (U), heat transfer (Q), and work (W) that were based on differential equations. The formula is
ΔU = Q + W
But since these factors depend on their signs, we must remember to take them into account. Van Ness, Smith, and Abbott assert that declining has a negative sign convention. If work is being done ON the system, the sign is positive; however, if work is being done BY the system, the sign is negative. in this instance,
ΔU = - 200 J\sW = - 44 J
In that case, Q can be found.
-200 J = Q - 44 J
heat transfer (in j) occurs from a system Q = - 156 J.
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Why is an electric current only produced if there is a closed circuit?
Without a closed circuit, electrons cannot flow from one point to another.
A closed circuit allows magnets to move back and forth, creating an electric current.
An open circuit causes electrons to escape the wire, stopping the electric current.
With an open circuit, the magnetic field created would cause the current to stop flowing.
An electric current only produced if there is a closed circuit because without a closed circuit, electrons cannot flow from one point to another. That is option A.
What is an electric current?An electric current is defined as the flow of charged particles through an electrical conductive pathway or space.
There are two types of electric current such as direct current (DC) and alternating current (AC).
For a current to flow to a circuit the circuit must be closed through the switch. This is because a closed circuit ensures that the pathway is complete to prevent the loss of energy.
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In a classic Simpsons episode, Abe Simpson states "My car gets 40 rods to the hogshead, and that's the way I like it!" To describe the gas mileage of a modern car to Abe Simpson, construct a method to convert 51.5 miles per gallon to rods per hogshead. For this calculation, use the two following conversion factors: 1 mile = 320.0 rods 1 hogshead = 85.7 gallons What is the gas mileage of the car in rods per hogshead? (Note: Report your value in decimal notation, not scientific notation.)
The gas mileage of the car in rods per = 1412336rogs/
We have been given:
quantity= 51.5miles per
1 mile = 320.0 rods
1 = 85.7
51.5miles/ = 51.5×1mile/1 ×320.0 rods/1mile×85.7/
= (51.5×320.0×85.7)rods/
= 1412336 rods/
hence, the final answer will be 1412336rods/.
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Examine this DNA strand: TACCTGGCA. The sequence that would be found on the other side of theDNA molecule would be: a. TACCTGGCA b. ATGGACCGT c. UAGGUGGCA d. AUGGACCGU
If we have the DNA strand TACCTGGCA then the sequence that would be found on the other side of the DNA molecule would be b. ATGGACCGT.
What is the complementarity of DNA strands?The complementarity of DNA strands is a rule that states Adenine or A always pairs with Thymine or T, while Guanine or G always pairs with Cytosine or C.
Therefore, with this data, we can see that the complementarity of DNA strands depends on the matches between different nucleotides in the DNA strand such as A with T or C with G.
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a 35.0-kg child swings in a swing supported by two chains, each 3.08 m long. the tension in each chain at the lowest point is 418 n. (a) find the child's speed at the lowest point. m/s (b) find the force exerted by the seat on the child at the lowest point. (ignore the mass of the seat.) n (upward)
The child's speed at the lowest point is 5.54 m/s and the force exerted by the seat on the child at the lowest point is 692 N.
A tension is a force along the length of a medium, especially a force carried by a flexible medium, such as a rope or cable. The word “tension” comes from a Latin word meaning “to stretch.” Not coincidentally, the flexible cords that carry muscle forces to other parts of the body are called tendons.
The Tension Force or the Force of Tension is the force transmitted through a rope, cable, string or wire pulled taut by forces acting on both ends.
The Tension Force, like all forces, is a vector and has both magnitude and direction. Direction, Always a pull, In the direction of the rope, In opposite directions on opposite ends of the rope.
Any flexible connector, such as a string, rope, chain, wire, or cable, can exert pulls only parallel to its length, thus, a force carried by a flexible connector is a tension with direction parallel to the connector. It is important to understand that tension is a pull in a connector.
a)let the velocity at the lowest point be v
By balancing the force, we get
T + T = Mg + mv^2/l-------(1)
346+346 = 35*9.8 + 35*v^2/3.08
692=343 + 35v^2/3.08
v=5.54 m/s
b)let the force be F
At equillibrium, we get
F = Mg + mv^2/L
F = T+T (from 1)
F = 2T
F = 692 N
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(a) A dc power line for a light-rail system carries 1000 A at an angle of 30.0∘ to Earth’s 5.0×10−5T field. What is the force on a 100-m section of this line? (b) Discuss practical concerns this presents, if any.
A light-rail system's dc power line, which carries 1000 A at an angle of 30.0° to the Earth's 5.0*10^5T field, exerts 2.5N of force on a 100-m portion of this line.
A force in physics is an effect that has the power to alter an object's motion. A force can cause an object with mass to change its velocity, or accelerate (for example, moving from a condition of rest). Intuitively, a push or a pull can also be used to describe force. Being a vector quantity, a force has both magnitude and direction. The SI unit of newton is used to measure it (N). A combination of tram and metro components define the passenger urban rail transit system known as "light rail transit" (LRT).
F = BIlsin(tetha)
F = 5*10^-5*(10^3)(10^2)*sin(pi/6)
F = 5*1/2
F = 2.5N
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a ball is thrown vertically into the air. when it returns after an interval of two seconds
The final possible sentence is, "It accelerates downward vertically at a rate of 10 m/s/s when it leaves the hand."
Why would the ball Accelerate downwards?The ball experiences the effects of the acceleration caused by gravity at every moment of its motion (10 m/s2 is assumed). Whatever the ball's elevation, this is true. Gravitational acceleration is always downward-pointing (not up).
The motion is kinematically defined by a parabola with branches heading downward as a function of time (motion under constant acceleration), with the vertex marking the highest height the ball can reach in the absence of air resistance. The time spent moving up and down is equal because the two branches (which represent motion in both directions) are equally spaced from the vertex.
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The given question is incomplete, the complete question is:
A ball is thrown vertically into the air and when it returns after an interval of 2 seconds, it is caught. Which one of the following statements is true if the acceleration due to gravity is 10 m/s/s and air resistance can be neglected?
The acceleration at the top of its flight is 10 m/s/s upwards.
The acceleration at the top of its flight is 0 m/s/s.
The time taken for the descending motion does not equal the time taken for the ascending motion.
The acceleration after it leaves the hand is 10 m/s/s downwards.
for what value of r is the potential energy u(r) equal to the total energy e ? this value of r is called the classical turning point, since this is where a newtonian particle would stop its motion and reverse direction.
For 1/4 value of r is the potential energy equal to the total energy.
What is potential energy?Potential energy is the form of energy that a object gain.
first want to find the value of our, what value of R is the potential energy equal to the total energy? So you are is equal to negative 1/4 pi epsilon naught E squared over R. Which is the potential energy. And E. This is a total energy. So we just set these two values equal to each other. So negative 1/4 pi epsilon naught E squared over R. Is equal to negative M. E. To the fourth divided by eight E squared and squared each squared and R is equal to two. So we can go ahead and solve this. We get R. Is equal to two. Absolutely not H squared divided by pi M. R. E squared. And actually this is just two times A. So the radius is to a. Now part B. We want to find the probability of electron being found in this classically forbidden forbidden region are greater than the classical turning point. So we need, so first of all let's look at the ground state wave function which is one over squared pi a cubed times E. To the negative are over A. This is what will be needed to integrate to find the probability. So the probability goes from R. is equal to two way to sigh.
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I am from _______ (specific ordinary item), from _______ (product name) and _______. I am from the _______ (home description... adjective, adjective, sensory detail). I am from the _______ (plant, flower, natural item), the _______ (plant, flower, natural detail) I am from _______ (family tradition) and _______ (family trait), from _______ (name of family member) and _______ (another family name) and _______ (family name). I am from the _______ (description of family tendency) and _______ (another one). From _______ (something you were told as a child) and _______ (another). I am from (representation of religion, or lack of it). Further description. I'm from _______ (place of birth and family ancestry), _______ (two food items representing your family). From the _______ (specific family story about a specific person and detail), the _______ (another detail, and the _______ (another detail about another family member). I am from _______ (location of family pictures, mementos, archives and several more lines indicating their worth). Brainstorming ideas: "I'm From" Idea Gathering Smells from your childhood Places in your home and neighborhood Close family members Lands and places your family is from Sayings in your family Songs/stories your family sings/tells Where you keep memories Tastes from your childhood
Bobby pins, stacks of newspapers, grandma's teeth in a glass. 2. Items found in your yard/things you used to do in the yard: dog bones, broken fences, flashlight tag, a hose coiled like a snake. (Feel free to think metaphorically.)
What's an ordinary item?
Very roughly, ordinary objects are objects belonging to kinds that we are naturally inclined to regard as having instances on the basis of our perceptual experiences: dog, tree, table, and so forth
What has made The Ordinary so popular?
The Ordinary differs from other beauty companies because it combines research with straightforward packaging, high active ingredient concentrations, and affordable pricing points. The Ordinary offers skin care, hair care, complete body care, and makeup with an emphasis on straightforward, scientifically supported ingredients.
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Find the acceleration
Answer:
5m/s²
Explanation
100N and 80N of forces act in the same direction so we will add them together
100N + 80N = 180N
while 30N force act in opposite direction so we will have to subtract
180N – 30N = 150N
force = 150N
mass = 30 kg
acceleration = ?
using the formula
f = m × a
[tex]a = \frac{f}{m} [/tex]
[tex]a = \frac{150}{30} = {5ms}^{ - 2} [/tex]
I hope this helps
G s w d v b k x s r only for freinds
Have a pretty heart
Answer:
what do you mean
Explanation:
while observing a storm, you see a flash of lightning, and hear the thunder 5.9 seconds later. assuming the speed of sound through the air is 331 m/s, how far away was the lightning strike, in km?
If a flash of lightning, and hear the thunder 5.9 seconds later, the distance of the lightning strike is 1 mile.
A mile is longer than a kilometer. To find out whether a kilometer or a mile is longer, convert them to feet. One mile is 5,280 feet. One kilometer is 3,280.84 feet.
Most roads have speed limits between 25 and 60 mph, so you can expect to drive one mile in 1 to 2.5 minutes. Whatever you do, don't let the math get you off the road! And don't forget that it's important to properly insure your vehicle.
The 10,000 steps are about 5 miles or 1 hour and 40 minutes, depending on stride length and walking speed. But that doesn't mean you have to do it all in one walk.
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a swan on a lake gets airborne by flapping its wings and running on top of the water. if the swan must reach a velocity of 6000 mm/s to take off and it accelerates from rest at an average rate of 35.0 cm/s2, how far will it travel before becoming airborne?
It travels 51.4 m before ascending into the air. If the swan must accelerate from rest at an average speed of 35.0 cm/s^2, it will take 6000 mm/s to attain the required speed for takeoff.
Consider the instantaneous speed to be the speed that the speedometer registers at any given moment in time, and the average speed to be the average of all the measurements taken throughout the journey. In mechanics, acceleration is the rate at which an object's velocity with respect to time changes. The vector quantity of accelerations (in that they have magnitude and direction).
The kinematics equation and the provided information lead to the conclusion that
x = V2^2 -V1^2/2a
x = 6^2/2*0.35 = 51.4m
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you have a galaxy that is too far away to see individual stars, but you can see a little smudge of light from the galaxy. what would be the best way to find the distance to this galaxy?
The best way to find the distance to galaxy is using a highly resolved telescope like Hubble space telescope.
A giant blue star that spans more than half the universe, commonly known as Icarus, is the most distant single star ever seen. They are usually too faint to see, even with the world's largest telescopes. But astronomers using NASA's Hubble Space Telescope were able to locate this distant star and set new distance records, thanks to a natural variant that greatly amplifies the star's faint glow. They also used Icarus to test dark matter theory and study the composition of foreground clusters of galaxies.Hidden in a very distant spiral galaxy, this star is so far away that it took her nine billion years for its light to reach Earth. It seems like when the universe was about 30% of its current age.The cosmic feature that makes this star visible is a phenomenon called gravitational lensing. The gravity of massive foreground clusters of galaxies acts like a natural lens in the universe, bending and amplifying light. Light from a single background object may appear as multiple images. Light is greatly magnified and bright enough to see very faint and distant objects.To learn more about spiral galaxy -
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Please help me I have physics tomorrow and im so confused
Answer:
trust the process
Explanation:
quadratic formula, use synthetic division also use the p-q method for the roots and factoring.
write explanation for two dimensional motion
A two dimensional motion is a type of motion takes place in two different directions.
What is two dimensional motion?Two dimensional motion is a type of motion that occurs in two planes of a coordinate system.
In other words, this type of motion takes place in two different directions as opposed to one dimensional motion that only take place in one direction.
A two dimensional motion can occur in both x and y direction or x and z direction or y and z direction. As long the motion happens in two planes or direction it is considered two dimensional motion.
Examples of two dimensional motion include;
A particle moving along a curved path in a plane such as a coin on a carrom boardThus, a motion must occur in two different directions to be considered two dimensional motion.
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Suppose that a high-energy neutron is travelling at a speed of 18 million m/s. Find its energy in MeV (million electron volts (eV) ).
The Energy of the a high-energy neutron be 940.51 MeV.
What is speed?Speed is distance travelled by the object per unit time. Due to having no direction and only having magnitude, speed is a scalar quantity With SI unit meter/second.
Mass of neutron: m₀ = 939.6 MeV/c².
a high-energy neutron is travelling at a speed of 18 million m/s
v = 1.8 × 10⁷ m/s.
Hence, Energy of the neutron be = m₀c²/√(1- v²/c²) = 940.51 MeV.
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a 175-kg object and a 475-kg object are separated by 3.90 m. (a) find the magnitude of the net gravitational force exerted by these objects on a 53.0-kg object placed midway between them. n (b) at what position (other than an infinitely remote one) can the 53.0-kg object be placed so as to experience a net force of zero from the other two objects? m from the 475 kg mass toward the 175 kg mass
a) The magnitude of the net gravitational force exerted by these objects on a 53.0 kg is 6.03 * 10¹¹ N
b) By placing object of 53.0 kg 1.976 m from 175 kg object and 1.324 m from 475 kg object.
Mass of an object-1= M₁ = 175 kg
Mass of an object-2= M₂ = 475 Kg
Distance between M₁ & M₂ = 3.90 m
Mass of an object-3 = M₃ = 53 Kg
If M₃ placed midway between them M₁ & M₂.
Force on M₃ due to M₁
Distance between M₁ & M₃, r = 3.90/2 = 1.95
F = G(M₁*M₃/r²)
F = 6.67 x 10¹¹(175*53/ 1.95²)
F = 16,269.33*10¹¹ = 1.62 * 10⁷ N
Force on M₃ due to M₂
Distance between M₂ & M₃, r' = 3.90/2 = 1.95
F' = G(M₂*M₃/r²)
F = 6.67 * 10₁₁ ( 475 * 53/ 3.8)
F = 44188.75 * 10¹¹ = 4.41 * 10⁷ N
Net force on M₃:
F' + F = 4.41 * 10⁷ N + 1.62 * 10⁷ N = 6.03 * 10¹¹ N
The magnitude of the net gravitational force exerted by these objects on a 59.0 kg is 6.03 * 10¹¹ N.
b) Distance between M₁ & M₂ = r = 3.90 m
Let the distanced between M₁ & M₃ be r
Force experienced by M₃ due to M₁ :
f = G(M₁*M₃/r²)
Let the distanced between M₂ & M₃ be r'
Force experienced by M₃ due to M₂:
f' = G(M₂*M₃/r²)
Net force equal to zero, then :
f = f'
G(M₁*M₃/r²) = G(M₂*M₃/r'²)
6.18*10⁷/r₂² = 16.7*10₇/r'²
r = 1.4914 * r'
R = r+r'
3.90 m = 1.4914\times r' + r'
r' = 1.324 m
r = 1.976 m
Therefore, the magnitude of the force on M₃ is 6.03 * 10¹¹ N and by placing object of 53.0 kg 1.976 m from 175 kg object and 1.324 m from 475 kg object.
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a car travels 65 km in 1 hour. what is its average speed in meters per second?
Answer:
18.1 m/s
Explanation:
65 km = 65 000 m and 1 hour = 3600 sec
65000 / 3600 = 18.1 m/s
A box with mass 15 kg is pulled up an inclined plane as illustrated in the figure. What magnitude of force, F, must be applied to the box in order to move it up the ramp at constant speed if the coefficient of kinetic friction between the box and ramp is 0.115?
Answer:
o99i
Explanation:
a spider hangs by a strand of silk at an eye level 40 cm in front of a plane mirror. you are behind the spider, 68 cm from the mirror.
Your eye as well as the spider's image in the mirror are 1.28 meters apart.
What is mirror, in a brief?A mirrors is a luminance that reflects light and creates an actual or fictitious picture. An device that returns an image is a reflector or looking glass, which reflects the image of the object when it is positioned in front of it. When focused through an eye or camera lens, light that reflects off a mirror will reveal an image of everything that was in front of it. Mirrors reflect light at an equal but opposite angle, reversing the orientation of the image.
Briefing:The image distance is equal to the object distance:
Distance between the spider and mirror = 40cm
So, the image is formed 40cm inside the mirror
Distance between the person and mirror = 68cm
Distance between the image and person = 68+40= 128cm
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Is it possible for an object that has constant acceleration to also have a changing velocity?
Explain.
Sure, it can.Your inquiry specifies "constant acceleration" as a criterion.The example with constant acceleration with varying trajectory is parabolic motion.
What does parabolic motion mean?Gravity will cause an object travelling forward in a single direction to fall inside a parabolic arc.The trajectory of a projectile travelling forward due to the momentum of the an initial thrust becomes parabolic because projectiles are objects that are exclusively impacted by gravity.
What does parabolic motion look like?When water is held at an angle and connected to a source of water or even a water tap, the water flows out in a projectile motion.Because the water tends to move both vertically and horizontally at the same time, its route is unmistakably parabolic.
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An IC with a switching rate of 4GHz4GHz and VDD=6VVDD=6V is dissipating 60W60W. What will be the power dissipation if we change VDDVDD to 5V5V and the switching rate to 3GHz3GHz while keeping the activity factor the same?
The power dissipation after changing voltage and switching rate will be 31.25 Volt.
What is power dissipation?
The greatest power that an integrated circuit (IC) can continuously dissipate under a given thermal environment is known as power dissipation.
For 1st case,
switching rate: f = 4 GHz.
power dissipation: P = 60 W.
voltage drop: [tex]V_{DD}[/tex] = 5 V.
So, load capacitance: [tex]C_L[/tex] = [tex]\frac{P}{V_{DD}^{2} *f}[/tex] = 60/{6^2×4} f = 0.417 f.
Now for 2nd case:
switching rate: f = 4 GHz.
voltage drop: [tex]V_{DD}[/tex] = 6V.
Hence, power dissipation in this case: P = [tex]{C_L*V_{DD}^{2} *f}[/tex]
= 0.417 × 5² × 3 V
= 31.25
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9-28. at what distance downwind will the plume from a stack begin mixing downward if an inversion layer exists at a base height of 265 m and the wind speed is 4.0 m/s on an overcast summer afternoon? the effective stack height is 85 m.
A factory releases a plume into the atmosphere on an overcast summer afternoon at x = 23.96 km
Plume standard deviation
Sz= 0.47 (L-H)
= 0.47 (514-54)
= 216.2
for overcast Condition stability class is D
We Know S₂ = exd + f
for class D we have C = 44.5
d= 0.516
f = -13
216.2= 44.5 [tex]x^{0.516}[/tex] - 13
x = 23.96 km
The Old English word plmfether is where the modern term plume originates. Further back, the Latin word pluma, which means "feather" or "down," may be found. A big puff of smoke or any other material that expands into the air from a single source is frequently referred to as a plume.
A huge amount of something that rises into the air in a column is called a plume of smoke, dust, fire, or water. Everywhere around Kabul, one could see the black smoke cloud rising.
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(209) Problem 3: You are constructing mobile out of 5 identical toy helicopters_ each of mass m 165 g, identical sticks (each length / = 24.1 cm, and negligible mass) and thin string negligible mass_ The distance from the left-hand side of each stick to the attachment point of the sting supporting it ae Xp through x4 respectively, as shown in the diagram. The tensions in the supporting strings are T/ through T4 as shown. You want to design the mobile s0 that it is in static equilibrium_ Otheexpertta com 13 % Part (a) Find the tension in Newtons in the string T]. 13 % Part (b) Find the tension in Newtons in the string 13% Part (c) Find the tension in Newtons in the string Tz: 13 % Part (d) Find the tension in Newtons in the string T4: 13 % Part (e) Find the distance X/, in centimeters 13 % Part (f) Find the distance Xz in centimeters _ 13 % Part (g) Find the distance Xz,in centimeters _ 13 % Part (h) Find the distance x4, in centimeters _
The distance and tension in the supporting strings are
a)X1 = 12.05 b) x2 = 16.06, T2 = 0.7644 N c) X3 = 18.01 cm , T3 = 1.0123N, d) T4 = 1274N e) X4 = 4.82 cm
The mas of toy m = 165g
sticks length l = 24.1 cm
For x1,
Both toys are balanced at same distance from middle point,
x1 = 24.1/2 = 12.05
F0r x2
we know that moment force = mgd
here mgx2 = 2mg(24.1 - x2)
x2 = 48.2 - 2x2
x2 = 16.06
Total tension = mg
m = 3 × 26
tension T2 = 0.7644 N
for x3,
x3 = 3/4 × 24.1 = 18.01 cm
T3 = 4 × 0.26 × 9.8 = 1.0123N
For X4,
x4 = 1/5 × 24.1 = 4.82 cm
T4 = 5× 0.026× 9.8 = 1274 N
Tension is defined as the pulling force transferred axially by a string, rope, chain, or other similar object, or by each end of a rod, truss member, or other similar three-dimensional object; tension may also be referred to as the action-reaction pair of forces acting at each end of those elements. Compression's opposite, tension, is possible.
When atoms or molecules are driven apart from one another and accumulate potential energy while a restoring force is still present, the restoring force may produce what is also known as tension. Each end of a string or rod that is under such stress could pull on the thing it is attached to in order to release the tension and restore the string or rod to its relaxed length.
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Which of the following statements about a motor is correct?
In a motor, an electric current creates a magnetic field.
In a motor, a magnetic field induces an electric current.
In a motor, a magnetic current creates an electric field.
In a motor, an electric current induces a magnetic current.
The correct statements about a motor is, in a motor, an electric current creates a magnetic field.
first option is the correct answer.
What is electric motor?
An electric motor is an electrical machine that converts electrical energy into mechanical energy.
Electric motor or dc motor works on the principle that when an electric current is passed through a conductor placed normally in a magnetic field, a force acts on the conductor as a result of which the conductor begins to move and mechanical energy is obtained.
Thus, we can conclude that an electric motor is an electrical device in which an electric current creates a magnetic field through the current flowing in the conductor.
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suppose a woman does 500 j of work and 9500 j of heat transfer occurs into the environment in the process. what is the change in her internal energy, assuming no change in temperature or consumption of food? (that is, there is no other energy transfer.)
The change in internal energy is 10,000 J.
Given that, Work = 500 J
Heat Transfer = 9500 J
Internal energy can be altered by the temperature difference between a system and its surroundings.
We need to calculate the change in internal energy.
Let us use the equation of internal energy of a system,
ΔU = Q - W
where, Q is heat
W is work done
Let us put the values in the formula,
ΔU = -9500 - 500 = -10,000 J
Negative sign of heat is taken as the heat is lost in the process.
Thus, the change in internal energy is 10,000 J.
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a yo-yo can be thought of a solid cylinder of mass m and radius r that has a light string wrapped around its circumference (see below). one end of the string is held fixed in space. if the cylinder falls as the string unwinds without slipping, what is the acceleration of the cylinder?
The acceleration of the cylinder is 6.5 m/s^2 that means velocity of the cylinder is increasing by 6.5 m/s in one second.
The change in velocity per unit of time; it is a vector quantity and must have a direction, symbol is a and SI unit is m/s/s or m/s^2.
Since velocity is a vector quantity involving speed and direction, acceleration occurs when the speed of an object changes, and/or the direction of the object changes.
The definition of acceleration can be expressed mathematically as, a = Vf-Vi/t.
where, vf is the final velocity and vi is the initial velocity. The change in time is usually expressed as simply t because you assume that the initial time was zero.
The net force acting on the yo-yo is
Fnet = mg-T
ma=mg-T
now T= mg-ma
net torque acting on the yo-yo is
Tnet = Iα
I= moment of inertia (= 0.5 mr^2 )
α = angular acceleration
Tnet = 0.5mr^2(a/r)
Tr= 0.5mr^2(a/r)
(mg-ma)r=0.5mr^2(a/r)
a(1/2+1)=g
a= 2g/3
a= 2×9.8/3 = 6.5 m/s^2
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2) Forces F1, F2, and F3 act on the structure of Figure shown overhead view. We wish to put the structure in equilibrium by applying fourth force at a point such as P. The fourth force has vector components and Fh: We are given that &= 2.5 m, b-3.0 m, c-1.5 F1-22N, F2-12 N, F3-5 N.Find (a) Fv, (b) Fh, dan (c)
Forces Fv = 33N, Fh = 3.75 N, d=1.334m
a)For net force to be zero in vertical direction Fv = F1+ F2 = 33N
b)For net force to be zero in horizontal direction Fh = F3 = 3.75 N
c)Net torque about point O = 0
Fv.d - F2.b - F3.a= 0
33d - 10.5 x 3.3 - 3.75 x 2.5 = 0
d=1.334m
A force is a push or pull that an object experiences as a result of interacting with another object. There is a force acting on each object whenever two objects interact.
Contact forces are the kinds of forces that develop when two interacting objects appear to be in physical contact with one another. Frictional, tensional, normal, air resistance, and applied forces are some examples of contact forces.
When two things are interacting but are not physically touching each other, action-at-distance forces can still create a push or pull.
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What does the idea of multifactorial causation in drug effects suggest?
Taking several different drugs at the same time produces unpredictable effects.
Each person will have the same physiological response to a drug, but there can be different psychological responses.
Taking several different drugs at once increases their effectiveness. T
he effects of a drug depend on the dosage and the user’s personal makeup and experience.
According to the theory of multifactorial causation in drug effects, a drug's effects are influenced by dosage, the user's individual characteristics, and past experiences.
Dosage forms, sometimes also referred to as unit doses, are pharmaceutical drug products in the form in which they are marketed for use, with a particular combination of active ingredients and inactive ingredients (excipients), in a particular configuration (such as a capsule shell, for example), and apportioned into a specific dose. If two items are both amoxicillin, for instance, one comes in 500 mg capsules and the other in 250 mg chewable tablets. When each drug product is separately packaged, the term "unit dose" can also occasionally refer to non-reusable packaging), while the FDA distinguishes between the two terms as "packaging" or "dispensing" of unit doses. Depending on the situation, the term "multiple-unit dosage" might apply to various drug products packaged together or to a single drug product containing multiple pharmaceuticals.
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find the intensity of a 1.0- mw class 2 laser with beam diameter 2.4 mm .
The intensity of laser beam is [tex]$318.2 \mathrm{~W} / \mathrm{m}^2$[/tex].
What is intensity?
In physics, the power transferred per unit area is known as the intensity or flux of radiant energy, where the area is measured on a plane perpendicular to the direction of the energy's propagation. In the SI system, it has units watts per square metre, or kg⋅s⁻³ in base units.
The standard expression for the intensity of beam is given as,
I = P/A
Here, P is the power of the laser and A is the cross-sectional area of the beam. And its value is,
[tex]$$\begin{aligned}& A=\pi / 4 \times d^2 \\& A=\pi / 4 \times\left(2 \times 10^{-3}\right)^2 \\& A=3.142 \times 10^{-6} \mathrm{~m}^2\end{aligned}$$[/tex]
Then intensity is,
[tex]$$\begin{aligned}& I=\left(1 \times 10^{-3}\right) /\left(3.142 \times 10^{-6}\right) \\& I=318.2 \mathrm{~W} / \mathrm{m}^2\end{aligned}$$[/tex]
Thus, the intensity of laser beam is[tex]$318.2 \mathrm{~W} / \mathrm{m}^2$[/tex].
Complete question: Lasers are classified according to the eye-damage danger they pose. Class 2 lasers, including many laser pointers, produce visible light with no greater than 1.0 mW total power. They're relatively safe because the eye's blink reflex limits exposure time to 250 ms.Find the intensity of a 1-mW class 2 laser with beam diameter 24 mm .
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