17. Which of the following supports the idea that the genetic code is common to all living
things?
A. All living things share similar modes of reproduction
B. The same adaptations help all living things survive in the same way.
C. All living things have identical ways of using energy for survival.
D. All living things contain DNA with the same nitrogenous bases.

The total displacement of the diagram in the velocity-time graph is 55 m.

To find total displacement from a velocity-time graph, the area under the curve of the graph is calculated.

Considering the given figure:

The area under the velocity-time graph is composed of two triangles ABF & DCE having area A₁ & A₂ respectively, and a rectangle BEIF having area A3.

The area of A₁ = (2- 0) × (5 - 0)/2 = 5 m

The area of A₂ = (10 - 5) × (10 - 6)/2 = 10 m

The area of A₃ = (5 - 0) * (10 - 2) = 40 m

The total area under the curve = A₁ + A₂ + A₃

The total area under the curve = 5 + 10 + 40 =

The total area under the curve = 55 m

Therefore, the total displacement is 55 m.

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Answer:

calculate the expected time of arrival, we need to divide the total distance by the speed of the truck.

In this case, the expected time of arrival would be:

640 km ÷ 110 km/h = 5.82 hours

So the driver should be able to arrive at the destination within 6 hours if he can hold his current speed.

Expression for the electric potential a distance z away from the center of rod on the line that bisects the rod is [tex]V = k * Q / L * \int\limits {cos\theta / z \sqrt{(1 + L^2/4z^2 * tan^2\theta)} d\theta} \, dx[/tex].

The electric potential at a distance z from a point charge Q is given by:

V = k * Q / r

here

k is Coulomb constant and

r is distance from the point charge to the point.

For a thin rod of length L and charge Q, we can model it as a line of charge with linear charge density λ = Q/L. The electric potential at a distance z away from the center of the rod on the line that bisects the rod can be found by breaking the rod into infinitesimal charge elements and integrating the electric potential due to each element over the length of the rod.

Let's consider a small element of length dx located at a distance x from the center of the rod:-

[tex]dQ = \lambda * dx = Q/L * dx[/tex]

The displacement element to pt.:-

[tex]r = \sqrt{(x^2 + z^2)}[/tex]

The electric potential due to this element is:

[tex]dV = k * dQ / r = k * Q/L * dx / \sqrt{(x^2 + z^2)}[/tex]

Integrating this expression over the length of the rod, we get the total electric potential at a distance z away from the center of the rod on the line that bisects the rod:

[tex]V = \int\limits^(^-^L^/^2^)_L_/_2 {k * Q/L * dx / √\sqrt{(x^2 + z^2)}} \, dx[/tex]

To evaluate this integral,

[tex]u = x^2 + z^2, du/dx = 2x dx[/tex],

This can be further simplified:-

[tex]u = z^2 * tan^2\theta + L^2/4 * sec^2\theta[/tex]

[tex]V = k * Q / L * \int\limits {cos\theta / z \sqrt{(1 + L^2/4z^2 * tan^2\theta)} d\theta} \, dx[/tex]

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Answer:

Explanation:   In a series circuit, the output current of the first resistor flows into the input of the second resistor; therefore, the current is the same in each resistor. In a parallel circuit, all of the resistor leads on one side of the resistors are connected together and all the leads on the other side are connected together.

Two charged objects are separated a distance d,  the position vector of the object 1 with respect to the object 2 is P21 = d/2(√3i -j).

It is assumed in the problem that the origin is taken into account when determining the position of object 2. As a result, we may decompose the position vector of object 1 into its x and y components.

So, we can see from the diagram that the position vector's horizontal component is dcos30. This component is known as the x component because it lines up with the positive x axis. Hence, x=dcos30. Once more, dsin30 is the vertical component of the position vector. This component is known as the y component because it is congruent with the negative y axis. Hence, y=dsin30.

As a result, the position vector can be expressed as,

⇒P21=xi^+y(−j^)

The values P21=dcos30i+dsin30(j) are substituted

Now, the values of cos30 are 3-1/2 and sin30 are 12.

In order to substitute the values, we obtain P21=3-2di12dj.

Now, if we take the common, we get P21 = d/2(√3i -j).

This is the position vector of the object 1 with respect to the object 2.

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A) 130m for distance, 100m for displacement

B)260m for distance, 0m for displacement

Distance is the sum of all movement taken from start to finish, regardless of position or direction. Since we are going from point A, which is halfway through the 30m side, to point B, which is also halfway through another 30m side, we divide both by 2 and add them together to get 30m once more. Then we take into account the long side of the track, measuring 100m, and can decide that the total distance is 130m.

The displacement, however, doesnt take into account the extra 15m travelled on either of the short sides of the track. When talking about displacement, we are only looking at the distance BETWEEN point A and point B, not the real distance travelled to get to them. Think of it as if youve drawn a line between both points and are mesuring that line and that line only. Because that line would have the exact length as the long side of the track, we can decide that the displacement is 100m.

For part B, the distance is easy to find as we just add up all sides of the track. The tricky part is understanding why displacement is zero. Like I said earlier, it's easiest to imagine a line drawn between both points of mesurment when talking about displacement. In this case, we are talking about the jogger leaving from point A and returning to point A. As I'm sure youve guessed, we cannot possibly draw a line between point A to point A, therefore making the displacement 0.

I'm sorry this is a lot of writing, but I, myself, had a lot of difficulty wrapping my head around the concept of displacement and wanted to make sure it was easy to understand. Hope this helps

Answer:

The momentum of a 0.0231 kg bullet fired at 621 m/s is calculated by multiplying the mass of the bullet by its velocity:0.0231 kg * 621 m/s = 14.3 kg·m/sSo the answer is D. 14.3 kg·m/s.

Explanation:

Formula for momentum:

[tex]p=mv[/tex]

momentum(measured in kg*m/s) = mass(measured in kg) * velocity(measured in m/s)

__________________________________________________________

Given:

[tex]m=0.0231kg[/tex]

[tex]v=621m/s[/tex]

[tex]p=?[/tex]

__________________________________________________________

Finding momentum:

[tex]p=mv[/tex]

[tex]p=0.0231\times621[/tex]

[tex]p=14.3kg*m/s[/tex]

__________________________________________________________

Answer:

[tex]\fbox{Option D}[/tex]

The rotational acceleration and speed are shared by all of the points of a rigid body. As a result, the angular acceleration is positive and the rotation is anticlockwise.

A- 2*[(m1 - m2)/(m1 + m2)] *g/L The angular acceleration is positive and the rotation is anticlockwise. (m1 - m2)/(m1+ m2 + mbar/3) B- 2* *g/L The angular acceleration is positive and the rotation is anticlockwise.

(A) The magnitude of angular acceleration of the seesaw in this case is .

2(m₁-m₂)g÷(m₁+m₂)L

(B) The magnitude of angular acceleration of the seesaw in this case is

(m₁ g-m₂ g)÷(m₁+m₂)L

For a massless sea saw bar, with attached masses at each end, the torque produced due to the masses is,

ω=(m₁+m₂)+1/2

And, moment of inertia of the system of two masses is,

I=(m₁+m₂)L/4

The using the expression of torque as,

Angular acceleration is the term used to describe the temporal pace at which angular velocity varies. Radians per second is the accepted unit of measurement. Therefore, = d d t. Angular acceleration is also known as rotational acceleration.

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The magnitude of the GPE depends on the position of the object.

Some parts of the question appears to be missing but I will try to answer generally.

As an object falls, its gravitational potential energy (GPE) decreases.

Gravitational potential energy is the energy an object possesses due to its position in a gravitational field. The GPE of an object is directly proportional to its mass, the acceleration due to gravity, and its height above a reference level. The formula for gravitational potential energy is:

GPE = mgh

where m is the mass of the object, g is the acceleration due to gravity, and h is the height of the object above the reference level.

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Correct order in formation of coal as heat and pressure are increased and moisture content is decreased is (B) peat, lignite, bituminous, anthracite.

Peat is the first stage in the formation of coal, and is made up of partially decomposed plant material with a high moisture content. As heat and pressure are increased, the moisture content decreases and the plant material becomes more compressed, leading to the formation of lignite. Lignite is a low-grade coal with a relatively low carbon content, and is often referred to as brown coal.

With further increases in heat and pressure, lignite is transformed into bituminous coal, which has a higher carbon content and is often used for electricity generation. Finally, with even greater heat and pressure, bituminous coal is transformed into anthracite, which is the highest grade of coal and has the highest carbon content.

The stages of coal formation are important to understand because different types of coal have different uses and properties. For example, anthracite is often used for heating because it burns very cleanly and efficiently, while bituminous coal is often used for electricity generation because it has a higher energy content.

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Answer: I am assuming you're asking for the cliff height, which is 24M

We can use the kinematic equations to find the horizontal and vertical components of the ball's velocity and its final position.

The initial velocity components are:

v_x = 33 m/s * cos(60∘) = 28.6 m/s

v_y = 33 m/s * sin(60∘) = 33 * √3/2 m/s

The displacement components can be found using the kinematic equation:

x = v_x * t = 28.6 m/s * 4.0 s = 114.4 m

y = v_y * t - 0.5 * g * t^2 = 33 * √3/2 m/s * 4.0 s - 0.5 * 9.8 m/s^2 * (4.0 s)^2 = 102.4 m - 78.4 m = 24.0 m

The ball lands on the edge of the cliff, so its height must be equal to h, or:

y = h

24.0 m = h

So, the height of the cliff is 24.0 m.

During the Vietnam War, journalists often referred to the military's press briefings as "five o'clock follies" because they felt that the information provided was often incomplete or misleading.

The two choices that are correct are:

•Called the military's press briefings "five o'clock follies"

•Did not witness any combat on a firsthand basis.

. Additionally, due to the dangers of the conflict, many journalists did not have the opportunity to witness combat on a firsthand basis.

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The moment of inertia of the wheel about an axis through its center and perpendicular to the plane of the wheel is 2.09 kg·m^2.

The moment of inertia of the wheel about an axis through its center and perpendicular to the plane of the wheel can be calculated by using the parallel axis theorem, which states that the moment of inertia of a rigid body about any axis is equal to the moment of inertia about a parallel axis through the center of mass plus the product of the mass and the square of the distance between the two axes.

Here in the Question,

First, we need to find the moment of inertia of the hoop about an axis through its center and perpendicular to the plane of the hoop. This is a well-known result from basic mechanics and is given by:

I_hoop = 1/2 * m_hoop * r^2

where m_hoop is the mass of the hoop and r is its radius. Substituting the given values, we get:

I_hoop = 1/2 * 2.6 kg * (0.73 m)^2 = 1.26 kg·m^2

Next, we need to find the moment of inertia of a single spoke about an axis through its center and perpendicular to its length. This is also a well-known result from basic mechanics and is given by:

I_spoke = 1/12 * m_spoke * L^2

where m_spoke is the mass of the spoke and L is its length. Since the spokes are equally spaced around the hoop, we can consider a single spoke and multiply its moment of inertia by 7 to account for all the spokes. Substituting the given values, we get:

I_spoke = 1/12 * 0.11 kg * (0.73 m)^2 = 0.005 kg·m^2

Therefore, the moment of inertia of all the spokes combined is:

I_spokes = 7 * I_spoke = 0.035 kg·m^2

Finally, we can use the parallel axis theorem to find the moment of inertia of the entire wheel about an axis through its center and perpendicular to the plane of the wheel:

I_wheel = I_hoop + I_spokes + 7 * m_spoke * r^2

Substituting the given values, we get:

I_wheel = 1.26 kg·m^2 + 0.035 kg·m^2 + 7 * 0.11 kg * (0.73 m)^2 = 2.09 kg·m^2

Therefore, The wheel's moment of inertia about an axis passing through its center and perpendicular to its plane is 2.09 kg·m^2.

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The coefficient of kinetic friction is approximately 0.533.

To find the coefficient of kinetic friction, we can use the equation of the force of friction, which is given by:

f_friction = friction_coefficient  x f_norm

where;

Since the piano is being pulled at a constant speed, the net force on the piano must be zero, which means that the sum of the forces must be equal to zero:

f_net = f_horizontal - f_friction = 0

friction_coefficient = f_friction / f_norm

= (f_horizontal) / (f_norm)

= (1600 N) / (3000 N) = 0.533

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The keys will land 19.32 meters away from the base of the cliff.

Assuming that there is no air resistance, the motion of the keys can be described using the equations of motion for constant acceleration.

The initial horizontal velocity of the keys is 6.0 m/s, and the vertical velocity is zero. The acceleration due to gravity is 9.8 m/s^2, and it acts vertically downwards.

The time taken for the keys to fall from the top of the cliff to the ground can be found using the equation:

h = 1/2 * g * t^2

where h is the height of the cliff (42 m), g is the acceleration due to gravity (9.8 m/s^2), and t is the time taken.

Rearranging this equation to solve for t, we get:

t =√(2h/g)

t =√(2*42/9.8)

t = 3.22 s

During this time, the keys will have travelled a horizontal distance equal to their initial velocity multiplied by the time taken:

d = v * t

d = 6.0 * 3.22

d = 19.32 m

Therefore, the keys will land 19.32 meters away from the base of the cliff.

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Car B's velocity as observed by the person on the side of the road is -6.0 m/s, which means that it is moving in the negative x-direction.

explain about velocity ?

Velocity is a physical quantity that describes the rate of change of an object's position with respect to time. In other words, it is the speed and direction of an object's motion. Velocity is a vector quantity, which means that it has both a magnitude (or size) and a direction.

the relative velocity formula, which gives the velocity of one object as observed by another object or observer:

velocity of B with respect to observer = velocity of B with respect to A + velocity of A with respect to observer

In this problem, we have:

velocity of A with respect to observer = +21.4 m/s (positive because it is in the positive x-direction)

velocity of B with respect to A = -27.4 m/s (negative because it is in the opposite direction to A's velocity)

(Note that we use a negative sign for the velocity of B with respect to A because they are moving in opposite directions.)

Using the formula, we get:

velocity of B with respect to observer = -27.4 m/s + 21.4 m/s = -6.0 m/s

Therefore, Car B's velocity as observed by the person on the side of the road is -6.0 m/s, which means that it is moving in the negative x-direction.

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3.27 g's of force will be applied to the driver during the turn.

In science, the term "force" has a particular definition. At this time, it is appropriate to refer to a force as a push or a pull. There is no such thing as a power that something "contains" or "has in it." A force is exerted on one item by another.

We must employ the centripetal acceleration formula to resolve this issue:

a = v² / r

In this case, the velocity is 80 m/s and the radius is 200 meters, so:

a = (80 m/s)² / 200 m = 32 m/s²

To convert this to g's, we divide by the acceleration due to gravity:

32 m/s² / 9.8 m/s²/g = 3.27 g's (rounded to two decimal places)

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The number of amino acids different between sequence 1 and sequence 2 is 2.

The translations of sequence 1 and sequence 2 are different because:

Nucleotides are the building blocks of nucleic acids, such as DNA and RNA. They consist of a nitrogenous base, a sugar molecule (ribose or deoxyribose), and a phosphate group. The nitrogenous bases in nucleotides can be adenine, guanine, cytosine, or thymine (in DNA) or adenine, guanine, cytosine, and uracil (in RNA).

Nucleotides are linked together to form long chains, which make up the backbone of nucleic acids. The sequence of nitrogenous bases in nucleotides determines the genetic information stored in DNA.

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At the neutral point, the distance between the Earth's center and the Moon's center is about 399,000 kilometers, or 3.989 x 10⁸ meters.

Planets, stars, and galaxies all move because it is one of the fundamental forces of the universe. According to Newton's law of gravitation, the distance between two objects and their masses determine the magnitude of the gravitational force

We can make use of the fact that the gravitational force between two objects is inversely proportional to the square of the distance between their centers and proportional to the product of their masses to calculate this distance. As a result, we can solve for the distance by setting the force of gravity that the Earth exerts on the object to be equal to the force of gravity that the Moon exerts on the object.

The masses of the Earth and the Moon, M_E and M_M, respectively, and the distance between their centers, d. The following factors determine the Earth's gravitational pull on the object:

F_E is equal to G × M_E × m / (d₂), where m is the mass of the object and G is the gravitational constant. The following factors determine the Moon's gravitational pull on the object:

F_M = G × M_M × m / ((R-d)²)

where R is the distance between the centers of the Earth and Moon

Setting F_E equal to F_M, we get:

G × M_E × m / (d²) = G × M_M × m / ((R-d)²)

Simplifying and solving for d, we get:

d = R × (M_E / (3 × M_M))¹/³

Values for the masses and the radius of the Earth-Moon system (R = 3.844 x 10⁸ meters), we get:

d = 3.989 x 10⁸ meters

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The reading on the spring scale will depend on the acceleration of the elevator and the direction of that acceleration.

If the elevator is traveling downward but slowing down (i.e., accelerating in the upward direction), the scale will read less than the woman's normal weight of 125 lb. This is because the upward acceleration of the elevator reduces the effective weight of the woman, making her appear lighter on the scale. To determine the reading on the scale, you would need to know the acceleration of the elevator at that particular moment. If the elevator is slowing down at a rate of, say,[tex]2 m/s^2,[/tex]then the scale would read:

Weight = mass x acceleration due to gravity

Weight =[tex]56.7 kg x (9.81 m/s^2 - 2 m/s^2)[/tex]

Weight =[tex]56.7 kg x 7.81 m/s^2[/tex]

Weight = [tex]442.5 N[/tex]

Converting this to pounds, the reading on the scale would be approximately:

Weight = [tex]442.5 N x (1 lb / 4.448 N)[/tex]

Weight[tex]≈ 99.4 lb[/tex]

So, the scale would read approximately 99.4 lb, which is less than the woman's normal weight of 125 lb.

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The normal force is 53.3 N.

We have to note that the force that is acting on the object may be a single force or a system of forces. In this case, the force that is acting on the object would have many components including the normal force.

You must note that the normal force is the force that in a direction that is opposite to the weight of the object but does have the same magnitude as the weight of the object.

Thus we can see that the normal force is obtained from;

R = mgcosθ

m = mass

g = acceleration due to gravity

θ = angle

R = 6 * 9.8 * cos 25

R = 53.3 N

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Answer:

[tex]\huge\boxed{\sf R = 360\ ohms}[/tex]

Explanation:

Potential Difference = V = 9 V

Current = I = 0.025 A

Resistance = R = ?

V = IR (Ohm's Law)

V = IR

Divide I to both sides

[tex]\displaystyle \frac{V}{I} = R[/tex]

Put the given data

9/0.025 = R

360 ohms = R

OR

[tex]\rule[225]{225}{2}[/tex]

Answer:

Explanation:The object slows down as it moves upward until it reaches a maximum height, at which time the velocity is zero. Then the velocity increases as the object falls toward the ground.

the ratio between the rate of heat flow through a cheap window with a single pane of glass that is only 4 mm thick to a nicer double pane window with an air gap of 6 mm is 76.6667.

K[tex]_{glass}[/tex]=0.80 W/m°C

K[tex]_{air}[/tex]=0.025 W/m°C

Q=[tex]\frac{\triangle T}{R_{Th} }[/tex]

(R[tex]_{Th}[/tex])[tex]_{double pane}[/tex]×Q[tex]_{double pane}[/tex]=(R[tex]_{Th}[/tex])[tex]_{single pane}[/tex]×Q[tex]_{single pane}[/tex]

(R[tex]_{Th}[/tex])[tex]_{double pane}[/tex]=∑[tex]\frac{l}{KA}[/tex]

                      =  [tex]\frac{3}{0.8A} +\frac{7}{0.025 A}+\frac{3}{0.8 A}\\[/tex]

                      =[tex]\frac{287.5}{A}[/tex]

(R[tex]_{Th}[/tex])[tex]_{single pane}[/tex]=[tex]\frac{3}{0.8A}[/tex]=[tex]\frac{3.75}{A}[/tex]

[tex]\frac{Q_{single pane} }{Q_{double pane}} =\frac{R_{Th}_{double pane} }{R_{Th}_{single pane}}[/tex]

               = 76.6667

Heat flow, also known as heat transfer, is the movement of thermal energy from a region of higher temperature to a region of lower temperature. This occurs due to the random motion of atoms and molecules within a material. There are three main mechanisms of heat flow: conduction, convection, and radiation. Conduction is the transfer of heat through a material by direct contact, while convection involves the movement of a fluid (such as air or water) due to temperature differences. Radiation is the transfer of heat through electromagnetic waves, such as from the sun or a fire. Heat flow is a fundamental concept in thermodynamics and plays a critical role in many fields, including engineering, physics, chemistry, and biology.

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The material that was thrown out had an approximate initial velocity of 1.50-10⁵ m/s.

The following equation can be used to determine the ejected material's initial velocity under gravity's constant acceleration:

y is equal to v₀ x t x (1/2) a x t₂, where:

The values for y, a, and t are as follows: y is the vertical displacement (height) of the ejected material (3.00 10⁵ m); a is the acceleration caused by gravity on Io (1.80 m/s²); t is the time it takes for the ejected material to reach its maximum height (let's assume it is equal to 2 seconds for simplicity).

3.00×10⁵ m = v₀ ×2 s + (1/2) × 1.80 m/s² × (2 s)²

3.00×10⁵ m = v₀ × 2 s + 1.80 m/s² × 4 s²

3.00×10⁵ m = v₀× 2 s + 7.2 m/s²

v₀ = (3.00×105 m - 7.2 m/s²) / 2 s

v₀ = (3.00×105 m - 7.2 m/s²) / 2 s

v₀ = 1.50×10⁵ m/s

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The answer is option C. A baseball is heading upward after being thrown at an angle.

Kinetic energy is a type of energy associated with motion. It is defined as the energy an object possesses due to its motion, and is dependent on both the object's mass and its velocity. The formula for kinetic energy is KE = 1/2 mv^2, where m is the mass of the object and v is its velocity.

Kinetic energy can be transferred between objects, and is often involved in collisions and other interactions. For example, when a moving object collides with another object, some of its kinetic energy may be transferred to the second object. Kinetic energy is an important concept in physics and is used in many real-world applications, such as in the design of vehicles, machines, and athletic equipment.

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The water gauge pressure at location P is;

P p = 104525 Pa

We have been provided;

L = 4 cm = 0.04 m needle length

Water's viscosity; = 1 10(-3) Pa

r = 1 mm = 0.001 m Radius

v = 10 m/s is the speed.

The flow rate via a cylindrical pipe may be calculated using Poiseuille's equation for viscous liquid flow.

Q = (ΔP•πr⁴)/(8ηL)

Flow rate is now also written as;

Q = πr²v

Thus;

πr²v = (ΔP•πr⁴)/(8ηL)

This boils down to;

v = (ΔP•r²)/(8ηL)

Inserting the necessary values;

10 = (ΔP × 0.001²)/(8 × 10^(-3) × 0.04)

ΔP = (10 × 8 × 10^(-3) × 0.04)/(0.001²)

ΔP = 3200 Pa

This implies that;

P atm - P p = P

Where;

P p is the water gauge pressure at point P.

P atm is atmospheric pressure, which equals 101325 Pa.

Thus;

P p - 101325 = 3200

P p = 101325 + 3200

P p = 104525 Pa

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Heat will naturally flow from an object at 40°C to an object at 20°C.

Heat is described as the energy that is transferred from one body to another as the result of a difference in temperature.

Heat will naturally flow from an object at a higher temperature to an object at a lower temperature. So in the above scenario,  heat will naturally flow from an object at 40°C to an object at 20°C.

In conclusion, the basic concept of thermodynamics states that heat will flow spontaneously from a higher-temperature body to a lower-temperature body in order to equalize the temperatures of the two bodies.

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Unless A=B or unless either A or B is the empty set, AxB does not equal BxA. Students typically have no trouble understanding this because we define a cartesian product as an ordered pair, which implies that order would be important.

A plane's cartesian form is denoted by the formula ax + by + cz = d, where a, b, and c are the direction cosines normal to the plane and d is the distance from the origin to the plane.

If and only if the matching initial elements in both ordered pairs are the same, two ordered pairs are said to be equivalent. (ii) There will be mn elements in A B if there are m elements in A and n elements in B. This means that n(A B) if n(A) = m and n(B) = n.

Therefore, When the inner inverse fulfils P R (B ) B (A B) = 0 and (A B) B P R (B) = 0, it is implied that is closed and is the general solution.

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According to the question This gives us a percent yield of 150%.

Percent yield is a measure used in chemistry to calculate the efficiency of a chemical reaction. It is expressed as a percentage and is calculated by comparing the actual yield of a product obtained in a reaction to the theoretical yield, which is the maximum amount of product that could have been produced.

The percent yield of a reaction is the ratio of the actual yield of the reaction to the theoretical yield of the reaction multiplied by 100.
Therefore, to calculate the percent yield, we need to first calculate the theoretical yield of the reaction. We can do this by multiplying the given mass of reactants, in this case 80 g, by the stoichiometric coefficient of the desired product, which is 1.
This gives us a theoretical yield of 80 g.
Now, to calculate the percent yield, we divide the actual yield, which is 120 g, by the theoretical yield, which is 80 g, and multiply by 100.
This gives us a percent yield of 150%.

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