I need help with this question how to solve it for Brass and Cooper

The energy of the roller coaster at the bottom of the loop is given as

E = 658 J.

This is the kinetic energy of the roller coaster.

Due to this kinetic energy, the roller coaster starts moving upwards.

With the increasing height of the roller coaster, potential energy increases and kinetic energy decreases.

Thus, at the top of the loop, the roller coaster has only potential energy.

According to the conservation of energy,

Thus, the answer is 658 J.

Answer:

Explanation:

Given:

T = 3.00 min

t = 12 min

m₀ = 80.0 g

____________

m - ?

The Law of radioactive decay:

m = m₀·2^(-t/T)

n = (t/T) = 12 / 3.00 = 4

m = m₀ / 2ⁿ

m = 80 / 2⁴ = 80 / 16 = 5 g

The organ system is made to connect with the organ and it does the job for the organ by the connection.

What is organ system?

An organ is a group of tissues that work together for the overall function of the organ, and an organ i hain system is a group of organs are  that work together to the  perform a specific function. The human organism of consists of eleven organ system.

An organ system is a group of the organs that work together in the body to perform a  complex function, such as the  pumping blood or the  processing and utilizing the  nutrients. There are 11 of  major organ systems in the human body: The circulatory system. The lymphatic system. In The respiratory system.

Cell can adapt themselves by undergoing 5 different condition

-hyperplasia

-hypertrophy

-atrophy

-metaplsia

-dysplasia

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The electron's acceleration is 5.302x10¹⁷m/s²

What is electron's acceleration?
Considered is the acceleration of electrons in a plasma by a strong electromagnetic wave that strikes the surrounding magnetic field at an angle. It is demonstrated that there is a wave amplitude threshold that causes stochasticity. Although significant acceleration is possible below this threshold, it is restricted to a single resonance's trapping breadth. The electrons can accelerate from resonance to resonance above the threshold. It is further demonstrated that the Hamiltonian surfaces defining the interaction between waves and particles are topologically open when the parallel phase velocity of electromagnetic waves is supraluminous. In this situation, electrons acquire a lot of energy. The mechanism is appropriate for use in space applications since it is quite resilient and only slightly sensitive to changes in the wave parameters and the beginning energy of the electron.

Applying Newton's law of motion:
F = ma
⇒a = F/m
⇒a=4.83x10⁻¹³/9.11x10⁻¹³
⇒a=5.302x10¹⁷m/s²

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Answer:

- Assume a player s meters dunks a ball at an angle theta at an initial velocity Vo, through a net h meters from the ground.

- From Newton's first law of motion; a body remains in its state of motion unless acted upon by an external force.

[tex]{ \rm{v = u + at}}[/tex]

- Since it undergoes projectile motion, there is both vertical and horizontal motion;

Vertical motion:

[tex]{ \rm{v _{y} = u _{y} - gt }} \\ { \rm{v \sin( \theta) = u \sin( \theta) - gt }}[/tex]

- To find the vertical displacement moved by the ball. Let H be the vertical displacement moved by the ball

[tex]{ \rm{H =( u \sin( \theta) - \frac{1}{2} g {t}^{2} ) + h}} \\ \\ { \rm{}}[/tex]

Horizontal motion (g = 0);

[tex]{ \rm{v _{x} = u _{x} }} \\ \\ { \rm{s = u \cos( \theta) t}}[/tex]

Frequency= f = 4Hz

Amplitude = A = 1.8 cm

x= 0 , x= -1.8 cm

Apply:

frequency = 1 / time period

f = 1 / T

T = 1/f = 1 / 4 = 0.25 s

Time to complete one cycle = 0.25 s

To reach -1.8 cm:

t = T/4

t = 0.25 / 4 = 0.0625 s

Answer: 0.0625 s

To determine how many milliliters the patient need each meal we can use a rule of three:

then:

Hence the patient need 8 mL each meal; since the patient eats three meals per day he needs a total 24 mL per day of the medication.

Speed is the total distance covered by a given time or rate of change of distance per unit time is called speed. It is scalar quantity and its S.I. unit is m/s.

Velocity is the displacement  covered in a given time or rate of change of displacement per unit time is called velocity. It is vector quantity and its S.I. unit is m/s.

Acceleration is the rate of change of velocity per unit time. It is vector quantity and its S.I. unit is m/[tex]s^{2}[/tex].

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The Carbon 14 isotope will take 34200 years to reduce to 1 gram if the half-life of the isotope is 5700 years.

Half-life is the amount of time it takes an unstable isotope to decay to half of its initial value. It is identified as [tex]t_{1/2}[/tex].

Applying, the half-life formula:

A = A'( [tex]2^{x/y}[/tex] )

Where A is the original mass of Carbon-14, A' is the final mass of carbon-14 after decaying, x is the total time, and y is the half-life.

We have,

A = 64 g, A' = 1 g, y = 5700 years.

Substitute these values in the equation,

A = A'( [tex]2^{x/y}[/tex] )

64 = 1 ( [tex]2^{x/5700}[/tex])

64 =  [tex]2^{x/5700}[/tex]

[tex]2^{x/5700}[/tex]  = 2⁶

Therefore,

x/5700 ≈ 6

Multiplying each side of the equation by 5700

x ≈ 6 × 5700

x ≈ 34200 years

Hence, it will take 34200 years for the isotope to reduce to 1 gram.

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m = mass = 2kg

Diameter = 50 cm

radius= diameter /2= 50/2 = 25cm = 0.25m

w= angular velocity = 5 rad/s

L= I x W

I =2/5 * m*r^2 = 2/5 * 2 * 0.25^2 = 0.05 kgm^2

L= I x W = 0.05 * 5 = 0.25 kgm^2 / s

The pH and pOH of [H+] are 4 and 10 respectively.

a. [H+] = 1.0 × 10⁻⁴ M = 4

b. [H+] = 7.9 × 10⁻⁶ M = 6 - log 7.9 = 5.1

c. [OH⁻] = 1.0 × 10⁻² M = 14 - 2 = 12

d. [OH⁻] = 2.3 × 10⁻⁸ M = 14 - 8 - log 2.3 = 6.36

PH, traditionally denoting "ability of hydrogen", is a scale used to specify the acidity or basicity of an aqueous solution. Acidic solutions are measured to have decreased pH values than simple or alkaline solutions.

PH is a degree of the way acidic/primary water is. The variety goes from zero - 14, with 7 being neutral. pHs of less than 7 suggest acidity, whereas a pH of greater than 7 indicates a base. pH is virtually a degree of the relative amount of free hydrogen and hydroxyl ions inside the water.

Whilst the pH scale generally runs from 0 to fourteen, it's far truly feasible to calculate a negative pH. A bad pH happens when the molarity of hydrogen ions in a strong acid is more than 1 N (Normality).

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Take into account that the work done by the force F can be written as follow:

Consider that for a dot product between vectors you have:

where θ is the angle in between the vectors F and d.

Then, related to the given statemen, it is true that angle θ is the angle between force and displacement.

The release of energy during fusion because the mass of the resulting single nucleus is smaller than the combined mass of the two initial nuclei, the process produces energy. Remaining mass is converted to energy.

what is Nuclear fusion?

A reaction known as nuclear fusion occurs when two or more atomic nuclei fuse to create new atomic and subatomic particles.

Mass energy equivalence describes the relation between mass and energy  when system is in rest frame. According to Einstein's equation, mass and energy can be transformed into one another (E=mc2).

when energy is lost the mass of the system will also decrease in proportion. The energy and mass can be discharged into the environment as heat energy or radiant energy like light.

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This means that the release of energy from a nuclear reaction creates enough of a mass difference to be measured.

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Empiricism is the notion that all ideas are derived from experience, that all ideas may be relevant or are about experiences, or that all prepositions and beliefs that are seen to be reasonable are known or justified largely by experience. The main function of experience is explained by empiricism. Empiricism maintains that experience serves as the foundation for all knowledge.

Empiricism plays a major role in the psychological history of America and Britain. Psychology is unjustified in light of human-made scientific knowledge. Empiricism was a key component of ancient, medieval, and contemporary philosophy. The popular sense of the day seemed to be empiricist (Britannica). Empiricism was seen to be a crucial force resisting the pretense of speculative rationalist philosophy. Even if they accepted the majority of the significant information that was nonempirical, most medieval philosophers adopted the empiricist approach, at least in terms of concepts.

Empiricism, therefore, takes on many forms. Their relaxation is the major factor that separates them. According to the widely accepted explanation, people's perceptions of their physical environment are influenced by their experiences. According to the phenomenalist interpretation, assistance merely benefits a person's sensory experience.

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We will have the following:

So, the velocity given is approximately 28.8 m/s.

The average velocity of the car during this 20 sec interval is 1.5 m/s.

Given that,

A car travels 50 metres due north in 15 seconds then car turns around the and travels 20 metres due south in 5 second.

To find :

The magnitude of the average velocity of the car during this 20 seconds interval.

Initial velocity

u = 50 metres/15 = 3.33 m/s

Final velocity

v = 20 metres/5 = 4 m/s

Displacement of car is

Displacement = 50 - 20 = 30 metres

Let V is the velocity of the car during this 20 sec interval. We know that the average velocity is given by :

V = d/t

V = 30 metres/20 = 1.5 m/s

So, the average velocity of the car during this 20 sec interval is 1.5 m/s.

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Gravity is the force by which a planet or other body draws objects toward its center. The force of gravity keeps all of the planets in orbit around the sun.

Air resistance is a force that is caused by air. The force acts in the opposite direction to an object moving through the air.

Inertia means an object will continue its current motion until some force causes its speed or direction to change.

Acceleration is the rate of change of velocity per unit time. It is vector quantity and its S.I. unit is m/[tex]s^{2}[/tex].

Transfer of momentum is the amount of momentum transferred from one particle to another during particle collision or interaction. This phenomenon can be utilized in various areas of physics and optics including condensed matter physics and diffraction on the atomic scale.

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ANSWER:

12.3 m/s

STEP-BY-STEP EXPLANATION:

The vertical speed can be calculated by means of the following equation:

The speed in both cases is the same, since the angle remains the same.

We can calculate the initial speed in y since we know the angle, the value s would be the height, therefore, we substitute and calculate the final speed in y:

The speed would be 12.3 m/s in both cases

The car does not accelerate because the force of the engine is equal to the force of friction.

What is force?
A force is an effect that can modify the velocity of an item in physics. A force can cause a mass object to change its velocity (e.g., moving from rest), i.e., to accelerate. Intuitively, force can be described as a push or a pull. A force is a vector quantity since it has both magnitude and direction. It is measured in newtons, the SI unit of mass (N). The sign F represents force (formerly P).
Newton's second law, in its original form, states that the net force acting on an object is equal to the rate at which its momentum varies with time.

The force of the engine is equal to the force of friction and the force of gravity. The car does not accelerate because these forces are balanced.

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ANSWER

EXPLANATION

Parameters given:

Mass of glass, mg = 0.6 kg

Mass of ice tea, mt = 1.2 kg

Temperature of tea and glass = Tg = Tt = T1 = 19°C

Required temperature, T2 = 1°C

Temperature of ice, Ti = -15°C

The sum of the heat lost by the glass and the heat lost by the tea must be equal to the heat gained by the ice:

where cg = specific heat of the cup.

ct = specific heat capacity of the tea

Hi = heat gained by ice

The heat gained by ice is given as the sum of the heat gained to convert the ice to ice at 0°C, the heat gained to convert the ice at 0°C to water at 0°C and the heat gained to convert water at 0°C to water at 1°C:

where ci = specific heat capacity of ice

Lf = latent heat of fusion of ice

Therefore, we can substitute this into the original formula:

Solving for m in the equation above, the mass of ice needed is:

That is the mass of ice needed.

Answer:

7.5×3.5=37.5

Explanation:

Gravitational potential energy= mgh (mass × gravitational field strength × height)

So the formula mg gives you weight so we can write it as weight × height)

weight and force is same thing so both units are Newton. Please note that gravitational field strength is constant and its value is 10

Answer:

The correct answer would be :

7.5×3.5=37.5

Explanation:

This is because the gravitational potential energy= mgh

So this formula of mg gives us the weight so we can then write this  as

(weight × height)

weight and force is same thing so both units are Newton. Please note that gravitational field strength is constant and its value is 10

Explanation:

Have a great day/week.

Answer:

up  

Explanation:

If not moving then tension would be   12.0 * 9.81 = 117.7 N

  More N means going up    Less N means going down

Going UP

Answer:

Explanation:

Given:

m = 12.0 kg

T = 163 N

g = 9.8 m/s²

___________

a - ?

Resting bucket weight:

P = m*g = 12.8*9.8 ≈ 125 Н

P <  T  (125 < 163),

This means that the bucket is being lifted with acceleration upwards!

T = m*(g + a)

(g + a) = T / m

a =T / m - g

a = 163 / 12.0 - 9.8 ≈ 3.8 m/s²

When the results of an experiment support your hypothesis, this means that your hypothesis has been proven to be true. the statement is True.

A hypothesis is a proposed explanation of a phenomenon. For a hypothesis to be a scientific hypothesis, the scientific method requires that it can be tested. Scientists usually base scientific hypotheses on past observations that cannot be satisfactorily  explained by existing scientific theories.

The characteristics of a hypothesis are as follows:

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Given:

mass of the usain is

Acceleration is given as

Required: calculate the greatest and least net forces.

Explanation:

we know the force is given as

where m is the mass and a is the acceleration

to calculate the greatest force

we need find the greatest acceleration in the given table that is

plugging all the values in the above relation we get:

now, to calculate the least force we have the find the least acceleration

that is

plugging all the values in the above relation, we get:

so least force is zero.

we can se another least force when the acceleration is negative that is

then force is

Thus. the greatest force is

and least force is

a) 3 meter per second is the average velocity for the first half of the swim.

b) 2.72 meter per second is the average speed for the entire trip.

c) 2.85 meter per second  is the average velocity for the round trip.

Velocity can be defined as the rate that something moves in a specific direction. as the speed of a vehicle speeding north on a highway or the pace at which a rocket lifts off. Because the velocity vector is scalar, its absolute value magnitude will always equal the motion's velocity.

The formula to find average velocity is given by :-

Average velocity =total distance/total time taken

a) The average velocity for the first half of the swim = 60/20 =3 ms⁻¹

b) The average velocity  for the entire trip of the swim=60/22=2.72 ms⁻¹

c) The average velocity  for the roundtrip= 60+60/20+22 = 120/42 =2.85 ms⁻¹

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When F1 that is given  21 N and mass of the box is 2.8 kg then F2 is calculated to be 12.32 N

Newton's second law states that the force acting on an object is equal to the mass of an object times its acceleration. This means the more mass of an object, the more force is needed to accelerate it. Greater the force, the greater is the acceleration of the object.

It is given as : F=ma

where 'm' is the mass and 'a' is acceleration.

Given mass = 2.8 kg and F1= 21N

a= 3.1 m/s^2

When two forces are in the opposite directions the net force is the difference between them.

F1 - F2 = m* a

21 - F2 = 2.8* 3.1

21 - F2 = 11.78

F2= 21 - 11.78

= 9.22 N

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Given:

Mass of block = 2.4 kg

Acceleration = -0.8 m/s^2

Let's ifnd the coefficient of kinetic friction,

To find the coefficient of kinteic friction, apply the formula:

Where:

F is frictional force

N is the normal force.

Hence, we have:

Therefore, the coefficient of friction between the block and the surface is 0.08

ANSWER:

0.08

Answer:

Explanation:

Given:

L = 68 km

V₁ = 88.2 km/h

V₂ = 97.4 km/h

_____________

t -?

Time to complete the distance for each skier:

t₁ = L / V₁ = 68 / 88.2 ≈ 0.77 h

t₂ = L / V₂ = 68 / 97.4 ≈ 0.70 h

Waiting time:

t = t₁ - t₂ = 0.77 - 0.70 = 0.07 h

or

t = 60·0.07 = 4.2 min

In order to calculate the horizontal distance the ball will travel after falling off the table, first let's calculate the time the ball will be falling, using the formula below and considering the vertical movement:

So the ball was falling for 0.45 seconds. Let's use this time to calculate the horizontal displacement when the ball started falling:

So the distance is 0.63 meters.