determine the percent yield of copper by dividing the actual yield (in moles) by the theoretical yield (in moles). percent yield = %

Answer:

D

Explanation:

it just is

Final answer:

Base isolators, such as rubber and steel pads, absorb the energy of seismic waves to reduce earthquake damage. They allow the building to move and vibrate while keeping the rest of the structure stable.

Explanation:

Base isolators, such as rubber and steel pads, are used under some buildings to reduce earthquake damage. They work by absorbing the energy of seismic waves, which helps to minimize the impact on the structure. When an earthquake occurs, the base isolators allow the building to move and vibrate, while the rest of the structure remains relatively stable. This helps to protect the building from collapsing or sustaining significant damage.

Answer:

You can increase the ideal mechanical advantage of an inclined plane by decreasing the angle of the inclined plane

Explanation:

Mechanical Advantage Of An Inclined Plane

Since the sloping surface of the inclined plane is always greater than its height, the ideal mechanical advantage of an inclined plane is always greater than 1. To compute the ideal mechanical advantage for an inclined plane, we divide the length of the incline by the height of the incline. For example, An inclined plane that is 10 meters long and 5 meters high has an ideal mechanical advantage of 2.

If we look at the inclined plane as a triangle formed with the height and the horizontal surface, the length L of the inclined plane is the hypotenuse of such triangle and h is the opposite leg of the angle formed with the floor. Since:

[tex]\displaystyle sin\alpha=\frac{h}{L}[/tex]

The mechanical advantage is  

[tex]\displaystyle MA=\frac{L}{h}=\frac{1}{sin\alpha}[/tex]

As [tex]\alpha[/tex] decreases, its sine also decreases and the mechanical advantage (its reciprocal) will increase. Thus the answer is

You can increase the ideal mechanical advantage of an inclined plane by decreasing the angle of the inclined plane

You can increase the ideal mechanical advantage of an inclined plane by

decreasing the angle of the inclined plane.

This is a term which is used to depict the ease at which work is done in

relation to the force applied.

A higher angle means that the frictional force is usually higher which

makes more force to be applied and work harder. Decreasing the angle of

the plane makes the frictional force lesser with a smaller force needed.

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An elevator has 750,000 J when it is lived 500 meters in the air

Answer: Option D

Explanation:

The expression to find the potential energy completely on the basis of forces that on two objects. It can be written as

[tex]potential\ energy (P . E)=m \times acceleration\ due\ to\ gravity\ (g) \times height (h)[/tex]

Where,

m – mass of object

Acceleration due to gravity =  [tex]9.8 \mathrm{m} / \mathrm{s}^{2}[/tex]

h = 500 meters

Force = 1500 Newton

As we know, according to Newton second law of motion, the force can be expressed in terms of mass and gravity (F= ma). So, the potential energy can be calculated as

[tex]P . E=F \times h=1500(500)=750000 J[/tex]

Hence, an elevator has 750,000 J when it is lived 500 meters in the air.

Answer:

Due to Conservation of Energy just as the ball hits the ground it's potential energy is assumed zero

Therefore disregarding air resistance all energy is converted into potential energy.

So KE = PE  

(5 J)

The work done is 2026 J

Explanation:

First of all, we calculate the distance covered by the body; since the motion is uniformly accelerated, we can use the suvat equation:

[tex]s=ut+\frac{1}{2}at^2[/tex]

where

u = 0 is the initial speed

[tex]a=0.1 m/s^2[/tex] is the acceleration

t = 45 s is the time

s is the distance covered

Substituting,

[tex]s=0+\frac{1}{2}(0.1)(45)^2=101.3 m[/tex]

Now we can find the work done by the force, which is given by

[tex]W=Fs[/tex]

where

F = 20 N is the force applied

s = 101.3 m is the displacement of the object

Substituting,

[tex]W=(20)(101.3)=2026 J[/tex]

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Explanation:

1. To graphically add vectors, use the tail-to-tip method.  Draw the first vector (it doesn't matter which), then draw the second vector where the first vector ends.  The resultant vector is from the tail of the first vector to the tip of the second vector.

This graph shows two ways to get the resultant: A + B or B + A.

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2. To algebraically add vectors, split each vector into x and y components.

Aₓ = 5.0 cos 45 = 3.5

Aᵧ = 5.0 sin 45 = 3.5

Bₓ = 2.0 cos 180 = -2.0

Bᵧ = 5.0 sin 180 = 0

The components of the resultant vector are the sums of the components of A and B.

Cₓ = 3.5 + -2.0 = 1.5

Cᵧ = 3.5 + 0 = 3.5

The magnitude of the resultant vector is found with Pythagorean theorem, and the direction is found with tangent.

C = √(Cₓ² + Cᵧ²) ≈ 3.9 m/s

θ = atan(Cᵧ / Cₓ) ≈ 67°

Answer: Asteroid 1 has more mass than asteroid 2

Explanation:

We can use the conservation of momentum law to find the answer. So, according to this law:

"If two objects or bodies are in a closed system and both collide, the total momentum of these two objects before the collision will be the same as the total momentum of these same two objects after the collision".

This means the momentum before the collision or crash ([tex]p_{i}[/tex]) is equal to the momentum after the collision ([tex]p_{f}[/tex]):

[tex]p_{i}=p_{f}[/tex] (1)

Before the crash:

[tex]p_{i}=m_{1}V_{1}+m_{2}V_{2}[/tex] (2)

Where:

[tex]m_{1}[/tex] is the mass of the first asteroid

[tex]V_{1}=8 km/s[/tex] is the velocity of the first asteroid

[tex]m_{2}[/tex] is the mass of the second asteroid

[tex]V_{2}=-16 km/s[/tex] is the velocity of the second asteroid

[tex]p_{i}=m_{1}(8 km/s)+m_{2}(-16 km/s)[/tex] (3)

After the crash:

[tex]p_{f}=m_{1}U_{1}+m_{2}U_{2}[/tex] (4)

Where:

[tex]U_{1}=-4 km/s[/tex] is the final velocity of the first asteroid

[tex]U_{2}=-2 km/s[/tex] is the final velocity of the second asteroid

[tex]p_{f}=m_{1}(-4 km/s)+m_{2}(-2 km/s)[/tex] (5)

Substituting (3) and (5) in (1):

[tex]m_{1}(8 km/s)+m_{2}(-16 km/s)=m_{1}(-4 km/s)+m_{2}(-2 m/s)[/tex] (6)

Grouping similar terms:

[tex](8 km/s-(-4 km/s))m_{1}=m_{2}(-2 km/s-(-16 km/s))[/tex] (7)

Then:

[tex]m_{1}=(1.16 km/s) m_{2}[/tex] (8) This means [tex]m_{2}[/tex] must be multiplied by 1.16 km/s in order to make this side of the equation equal to [tex]m_{1}[/tex].

Hence:

[tex]m_{1}>m_{2}[/tex]

A molecule of a compound is composed of at least two types of atoms.

Explanation:

The particle that are very smaller and are found in an element or a  compound  is called as molecule. The molecules have the compound's or the element's chemical properties. Chemical bonds links the molecules to stay together. Atoms are the things that makes up the molecule.

The atoms that are present are similar in the molecule of an element. A molecule of a compound contains at least two types of atoms. For example let us consider a compound water. this contains hydrogen and oxygen. In water there will be 2 hydrogen and one oxygen atom. Now let us consider an example of the molecule of an element which is an oxygen. this contains two atoms but they both will be oxygen.

Answer:

The answer to question is  A molecule of a compound is composed of at least two types of atoms.

Explanation:

I hop this helps :) !!!!!!!!!!!!

The acceleration experienced by each of the two objects, if the coefficient of kinetic friction between the 7kg object and the plane is 0.25​ is 5.39m/s²

To solve this problem, we will use Newton's second law of motion. According to the law:

F = ma where:

F is the applied force

m is the mass

a is the acceleration of the body

For the body on the inclined, the sum of force on the body m1 is expressed as:

T - μR = m1a ............ 1

T - μmgcosθ = m1a ............ 1

For the body hanging, the sum of force on the body m2 is expressed as:

m2g - T = m2a ..............2

T is the tension

μ is the coefficient of friction

m1 and m2 are the masses

θ is the angle of inclination

a is the acceleration

Adding both equation will give:

- μm1gcosθ + m2g = (m1+m2)a

substitute the given values into the formula

-0.25(7)(9.8)cos 28 + 12(9.8) = (7+12)a

-17.15cos 28 + 117.6 = 19a

-15.143+117.6 = 19a

102.457 = 19a

a = 102.457/19

a = 5.39m/s²

Hence the acceleration experienced by each of the two objects, if the coefficient of kinetic friction between the 7kg object and the plane is 0.25​ is 5.39m/s².

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The acceleration experienced by each of two objects, we can use Newton's second law and the equations ΣF = m × a. For the box sliding down the ramp, we subtract the force of kinetic friction from the gravitational force to find the net force. For the mass being pulled by two forces, we add the forces together to find the net force. Solving these equations will give the acceleration experienced by each object.

To find the acceleration experienced by each of the two objects, we need to apply Newton's second law, which states that the net force acting on an object is equal to the mass of the object multiplied by its acceleration (F = m * a). In this case, we have two different scenarios:

By solving these equations, we can find the acceleration experienced by each of the two objects.

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Final answer:

In an elastic collision, momentum and kinetic energy are conserved. To find the velocity of the tennis ball after the collision, we can use the conservation of momentum equation. Solving for the final velocity, we find that the velocity of the tennis ball after the collision is 13.66 m/s east.

Explanation:

In an elastic collision, momentum and kinetic energy are conserved. To find the velocity of the tennis ball after the collision, we can use the conservation of momentum equation:

(m1 imes v1) + (m2 imes v2) = (m1  imes v1') + (m2 imes v2')

where m1 and m2 are the masses of the objects, v1 and v2 are the initial velocities, and v1' and v2' are the final velocities. Plugging in the given values, we have:

(0.311 kg  imes 30.3 m/s) + (0.0570 kg imes (-19.2 m/s)) = (0.311 kg imes v1') + (0.0570 kg imes v2')

Solving for v1', we get:

v1' = ((0.311 kg imes 30.3 m/s) + (0.0570 kg imes (-19.2 m/s)) - (0.0570 kg imes v2')) / 0.311 kg

Now we can solve for v2' by substituting the value of v1' into the equation. After solving, we find that the velocity of the tennis ball after the collision is 13.66 m/s east.

Explanation:

Nuclear power is derived from energy in nuclear reactions. They require a fuel in form of radioactive substances that disintegrate to produce a massive amount of energy.

Here are some drawbacks to use of nuclear power;

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Answer: Reflective

Explanation:

Most see natural and artificial light sources to be emitters of light and many also believe that bright and shiny objects like mirrors are also sources of light. An important reason for this is that students' conscious experiences of 'reflection' are associated with mirrors and other shiny smooth surfaces.

Final answer:

To calculate the impulse or change in momentum, multiply the force exerted on the ball by the time interval. Using the example provided, for a 1.0-kg ball and a 33 N force over 0.045 s, the impulse would be 1.485 kg·m/s.

Explanation:

The question is about calculating the impulse or change in momentum of a clay ball. Impulse can be found by multiplying the mass of the object by the change in velocity (which is also the change in momentum). If the final velocity of the ball is missing in the question and needs to be provided, we can still find the impulse using the given information.

For example, if a 1.0-kg ball of putty falls vertically and hits the ground receiving a force, the change in momentum can be calculated. The magnitude of impulse is equal to the force exerted on the ball by the ground multiplied by the time interval during which the force was applied.

If the force is 33 N and it was applied for 0.045 s (as given in the reference), the impulse would be:

Impulse = Force x time interval = 33 N x 0.045 s = 1.485 kg·m/s

With an initial velocity of 0 m/s and a final velocity of 5 m/s, the change in momentum is 5 kg·m/s.

The impulse experienced by an object is equal to the change in its momentum. Given a 1.0 kg clay ball accelerated from rest to a final velocity of 5 m/s, we can calculate the impulse using the following steps:

Initial velocity (u): 0 m/s (since it starts from rest)

Final velocity (v): 5 m/s

Mass (m): 1.0 kg

The change in momentum (Δp) can be found using the formula: Δp = m × ( v - u )

Substituting the values, we get: Δp = 1.0 kg × (5 m/s - 0 m/s) = 5 kg·m/s

Therefore, the impulse/ change in momentum of the clay ball is 5 kg·m/s.

The wavelength of sound wave with frequency 770 Hz and speed of 290 m/s is equal to 0.3767 m

The wave equation determining the relationship between speed, frequency and wavelength of a sound wave is given by:

Speed of sound = Frequency of sound × Wavelength of sound wave

v = n × λ .................................(1)

Given:

v = Speed of sound wave = 290 m/s

n = Frequency of sound = 770 Hz

λ = Wavelength = ?

From (1)

v = n × λ

Rewriting the equation for λ, we get

λ = [tex]\frac{v}{n}[/tex]

Substituting the values of v and n, we get

λ = [tex]\frac{v}{n} =\frac{290}{770} = 0.3767 \ m[/tex]

Hence, the wavelength of sound wave is equal to 0.3767 m

The (a) speed increases by square root of 3 on tripling of kinetic energy and (b) kinetic energy is reduced by 1/4th if the speed is halved.

Explanation:

Kinetic energy is the energy exhibited or released by any body in motion. So kinetic energy is directly proportional to the product of mass and square of velocity.

K.E = [tex]\frac{1}{2}mv^{2}[/tex]

(a) Since the kinetic energy is tripled then

New kinetic energy = 3 * old kinetic energy

[tex]\frac{1}{2}mv_{new} ^{2} = 3 *\frac{1}{2}mv_{old} ^{2}[/tex]

On cancelling the common terms of both side, we get

[tex]v_{new} ^{2} = 3 v_{old} ^{2}[/tex]

Squaring on both sides ,we get

[tex]v_{new}=\sqrt{3} v_{old}[/tex]

So the speed is increased by factor of square root when the kinetic energy is tripled.

(b) Similarly, if speed is halved, then

[tex]kinetic energy = \frac{1}{2}m(\frac{v}{2})^{2}[/tex]

Kinetic energy = 1/4×old kinetic energy.

So if the speed is halved, then the kinetic energy will be reduced by 1/4 of old kinetic energy.

Thus, the (a) speed increases by square root of 3 on tripling of kinetic energy and (b) kinetic energy is reduced by 1/4th if the speed is halved.

When the kinetic energy of a particle is tripled, the speed of the particle increases by a factor of √3. Conversely, if the speed of a particle is halved, the kinetic energy decreases by a factor of 1/4.

The kinetic energy (KE) of an object is governed by the equation KE = 1/2mv^2, where m is mass and v is speed.

(a) If the kinetic energy of a particle is tripled, its speed increases by a factor of √3 i.e., approximately 1.73. This is because the kinetic energy equation shows that KE is proportional to the square of the speed, hence if KE is tripled (x3), the speed is multiplied by the square root of 3 (√3).

(b) If the speed of a particle is halved, the kinetic energy changes by a factor of 1/4. This is because the kinetic energy is proportional to the square of the speed, so if the speed is reduced to half (1/2), the kinetic energy is reduced to its quarter (1/4).

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Answer:

Explanation:

The greater the mass of an object, the more slowly its temperature increase when it is heated

Answer:

11

Explanation:

Because 11 is its atomic number

Answer: 4.08 s

Explanation:

We can solve this problem with the following equation:

[tex]V=V_{o}-gt[/tex]

Where:

[tex]V=5 m/s[/tex] is the final velocity of the ball

[tex]V_{o}=45 m/s[/tex] is the initial velocity of the ball

[tex]g=9.8 m/s^{2}[/tex] is the acceleration due gravity

[tex]t[/tex] is the elapsed time

Isolating [tex]t[/tex]:

[tex]t=-\frav{V-V_{o}}{g}[/tex]

[tex]t=-\frav{5 m/s-45 m/s}{9.8 m/s^{2}}[/tex]

[tex]t=4.08 s[/tex] This is the elapsed time

The force of friction is equal to the pushing force, and the acceleration is zero

Explanation:

In this problem, we are pushing a piano along the floor, in the horizontal direction.

There are 2 forces acting in the horizontal direction on the piano:

Therefore, the net force in the horizontal direction is

[tex]\sum F = F_a - F_f[/tex]

According to Newton's second law, the net force is equal to the product between the piano's mass (m) and its acceleration:

[tex]\sum F = ma[/tex]

Combining the two equations,

[tex]F_a - F_f = ma[/tex]

However, we are also told that the piano moves at constant speed, therefore the acceleration is zero:

[tex]a=0[/tex]

And so,

[tex]F_a - F_f = 0\\F_f = F_a[/tex]

which means that the force of friction is equal to the applied force.

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Answer:

formula of acceleration is a = v-u/t

Explanation:

a= ?

v= 10

t= 20

a= 10-0 = 10

a= 10 divided by 20

= 0.5

the acceleration of the car is 0.5 m

Answer: a= 0.5 m/s² moving east

Explanation: To find acceleration use the following equation.

a = vf - vi / t ( vi = 0 at rest)

= 10 m/s - 0 m/s / 20 s

= 0.5 m/s² moving east

Explanation:

Ohm's law:

V = IR

V = (30 A) (20 Ω)

V = 600 V

Answer:

The voltage of the battery in the flashlight is 600 v

Explanation:

A light bulb provides a resistance of 20 Ω to the 30 A current that runs through it. Determine the voltage of the battery in the flashlight.

To determine the voltage of this battery,all we need to do is to use the formula;

V= IR

where v = voltage

I = current

R= resistance

From the question given;

resistance (I) is given to be 20   while current(I) is 30

We can now proceed to insert our values into the formula;

V= IR

V = 20 × 30

v = 600 v

The voltage of the battery in the flashlight is 600 v

Answer:0.25 meter per second square

Explanation:

Resultant force =√(4×4+3×3)

Resultant force=√(25)

Resultant force =5 Newton

But acceleration= force÷mass

Acceleration=5÷20

Acceleration=0.25

The required magnitude of the acceleration of the body is 0.25 m/s².

The change of velocity with respect to time concerning the application of some net external force is known as acceleration.

Given data:

The mass of the body is m = 20 kg.

The magnitude of forces at right angles are, 3 N and 4 N.

Now the net external force for the given magnitude of forces is calculated as,

[tex]F_{net} = \sqrt{3^{2}+4^{2}}\\\\ F_{net}=5 \;\rm N[/tex]

Now applying Newton's Second law of motion to obtain the value of acceleration as,

[tex]F_{net}=m \times a[/tex]

Solving as,

 [tex]5 =20 \times a\\\\ a= 0.25 \;\rm m/s^{2}[/tex]

Thus, we can conclude that the required magnitude of the acceleration of the body is 0.25 m/s².

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Answer: is Second Law of Thermodynamics (conduction).

john stirs the hot soup with a spoon the heat travels up the spoon to his hand is due to the basic law of conduction, also known as the second law of thermodynamics . Heat always travels from hot things toward the cold things, is proved by the phenomena that a cup of tea always get cold, and and a cold dessert or ice cream always melts. Its not possible that the cup of tea become boiling by itself and similarly an ice cream getting frozen on its own in on a hot day. To understand this point there are three ways in which heat can travel namely, conduction, radiation and convection. The process due to heat travels up to the spoon from the soup towards john's hand is called conduction. Conduction is the process in which heat travels between two solid things that are at different temperature. Cooking soup in a saucepan with a metal spoon will make your fingers hot because of the conduction of heat, that travels through the boiling soup pan through metal spoon towards your hand.

As streams flow through Stone Mountain, layers of sand build up. Over time, the sand particles form a sedimentary rock called sandstone. What causes sandstone to change into metamorphic rock at Stone Mountain? Sandstone experiences intense heat and pressure.

(Correct Answer is above)

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Answer:

Answer is C

Explanation:

I got it right on edg

Answer:

B, D, and E only

Explanation:

According to kirchoffs current law, current splits up when it reaches a junction in a parallel circuit. so A is false.

In a single junction (branch) however, current is constant. so B is true

C is false since equivalent resistance decreases in a parallel circuit with the addition of more resistors.

D is true according to Kirchoff's current law.

E Is true since in a parallel circuit equivalent resistance decreases with the addition of more resistors.

hope this helps.

A parallel circuit is one where the current splits at junctions and follows different paths. Each resistor in the same branch experiences the same current. As more resistors are added to a parallel circuit, the total resistance decreases.

In a parallel circuit, the current splits at junctions and follows different paths through the circuit. This is because each branch of the circuit is independent of the others, which allow the current to divide among the branches. Thus, if one path in the circuit is interrupted, the current in the other paths will continue to flow.

Also, it is correct that every resistor in the same branch of the circuit experiences the same current. The electric current passing through each branch is the same because they are in parallel. However, contrary to what might be expected, the total resistance of the circuit actually decreases as more resistors are added to it. This is due to the nature of parallel resistances, where the total resistance is less than the smallest resistance among the resistors.

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Answer:

c

Explanation:

Credit unions are nonprofit financial institutions. So, option C.

Unlike banks, which have a national or regional base, credit unions are founded locally.

The fact is that banks are for profit organizations, whereas credit unions are nonprofit ones.

Although they have higher interest rates, credit unions frequently boast superior customer service and fewer expenses.

On the other hand, banks often charge larger fees and lower interest rates.

A credit union's members share ownership in the organisation, whereas bank shareholders share ownership and, depending on the amount of shares they possess, have a role in how the bank is managed.

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Answer:

In the picture

Explanation:

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Answer:

Momentum is [tex]5000\ Kg\ m/s[/tex]

Explanation:

Given the mass of car [tex]1500\ kg[/tex]. And it travels [tex]400\ m[/tex] in [tex]12\ s[/tex].

We need to find its momentum.

We know the momentum is the product of velocity and mass. And is denoted by [tex]P[/tex]

So, [tex]P=m\times v[/tex]

We need to find the velocity of object. Then we will plug that into the equation.

And velocity is distance traveled divide by time elapsed.

[tex]v=\frac{d}{t}\\v=\frac{400}{12}\\v=33.33\ m/s[/tex]

Now,

[tex]P=m\times v\\P=150\times 33.33\\P=5000\ Kg\ m/s[/tex]

The momentum of a 1500 kg car traveling 400m in 12s is calculated by first finding its velocity, then multiplying by its mass, resulting in momentum of 49995 kg·m/s.

The student is asking how to calculate the momentum of a car. Momentum is a physical quantity defined as the product of an object's mass and velocity (p = m * v). The student is asking how to calculate the momentum of a car. Momentum is a physical quantity defined as the product of an object's mass and velocity (p = m * v). To find the momentum of the car, you first need to calculate its velocity, which is the distance traveled divided by the time taken. Since the car travels 400 meters in 12 seconds, its velocity is 400 m / 12 s = 33.33 m/s. Then, you can calculate the momentum by multiplying the mass of the car by its velocity. Therefore, the momentum (p) of a 1500 kg car traveling at 33.33 m/s is p = 1500 kg * 33.33 m/s = 49995 kg·m/s.To find the momentum of the car, you first need to calculate its velocity, which is the distance traveled divided by the time taken. Since the car travels 400 meters in 12 seconds, its velocity is 400 m / 12 s = 33.33 m/s. Then, you can calculate the momentum by multiplying the mass of the car by its velocity. Therefore, the momentum (p) of a 1500 kg car traveling at 33.33 m/s is p = 1500 kg * 33.33 m/s = 49995 kg·m/s.

Answer & Explanation:

Relative age is the age of a rock layer (or the fossils it contains) compared to other layers. It can be determined by looking at the position of rock layers. Absolute age is the numeric age of a layer of rocks or fossils.

The difference between the different the arrangement of particles in different states of matter is "how the particles are arranged".

Explanation:

The matter is any substance made of particles like atom, molecules or ions that has mass and require space by having volume. The matter present in universe are basically in three states as follows and differ from each other according to the arrangement of particles: