You serve a volleyball with a mass of 2100 g. the ball leaves your hand with a velocity of 30 m/s. the ball has kinetic
energy.

Assuming the water exerts a constant drag force equal to 5.00x10 N and the acceleration is constant:  No correct answer given. The correct option is b.

In order to calculate the power required to accelerate the boat to a velocity of 20.0 m/s, we will have to use the formula for the power which is given as:

P = Fv

Where: P is the power, F is the force, and v is the velocity.

The force acting on the boat is the drag force which is given as F = 5.00x10 N.

The final velocity of the boat is 20.0 m/s and it starts from rest which implies the initial velocity is u = 0.

The time taken by the boat to reach the final velocity is given as t = 5.00 seconds.

So the acceleration can be calculated as follows:

acceleration (a) = (v - u)/t

Where: v is the final velocity = 20.0 m/s

u is the initial velocity = 0

t is the time taken = 5.00 seconds

a = (20.0 - 0)/5.00 = 4.00 m/s².

Now that we have the acceleration, we can find the mass of the boat using the formula:

F = ma

Where: F is the force acting on the boat m is the mass of the boat and a is the acceleration calculated above. Rearranging the above formula, we get m = F/a = 5.00x10 N/4.00 m/s²= 1250 kg.

Now that we know the mass of the boat, we can calculate the power using the formula: P = Fv = mav

Where: P is the power, F is the force, m is the mass of the boat, v is the final velocity, and a is the acceleration calculated above.

Substituting the values, we get: P = 1250 kg x 20.0 m/s x 4.00 m/s² = 100,000 W = 100 kW. Now, converting the power to hp, we get: 1 hp = 746 W. Therefore, the power required is: P = 100,000 W/746 W/hp ≈ 134 hp. Hence, the answer is No correct answer given. The correct option is b.

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Complete question:
How much power would a 1.00x10 kg speed boat need to go from rest to 20.0 m/s in 5.00 seconds assuming the water exerts a constant drag force equal to 5.00x10 N and the acceleration is constant? 2 Select one: a. 69.9 hp

b. No correct answer given

c. 20.3 hp

d. 75.0 hp

e. 60.3 hp

The smallest height needed to make a wave is (D)any height.

Wave in term of object is a condition of an object has different value of height in its surface as long as the surface has the crest point and the trough, an object can be determine has a wave. The highest point of the wave is named as the crest and the lowest point is named the trough. The wave height define as the overall vertical difference in height between the trough and the crest, and distance between two successive troughs or crests is the length of the wave or wavelength.

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Answer:

b

Explanation:

Answer:

131 N

Explanation:

F = 82.0 kg x 1.60 m/s^2 = 131.2 N

Answer:

Its sure 2nd gare beaciuse

Explanation:

of tobi was obito was tobi his som came and start doing enginner but he faild so i gave him answer he repiled oh baby baby oh

The gravitational force between two people with 59 kg masses standing 2 meters apart is approximately 4.61 x 10^-8 Newtons.

The gravitational force between two objects can be calculated using the equation F = (G * m1 * m2) / r^2, where F is the force, G is the gravitational constant (approximately 6.67430 x 10^-11 N(m/kg)^2), m1 and m2 are the masses of the two objects, and r is the distance between them. Plugging in the values, we get F = (6.67430 x 10^-11 N(m/kg)^2 * 59 kg * 59 kg) / (2 m)^2, which simplifies to F ≈ 4.61 x 10^-8 N.

When a satellite with mass M takes time T to orbit a planet, doubling the mass to 2M would not change the time for it to orbit the planet. The time for an object to complete one orbit around another object (assuming a circular orbit) only depends on the mass of the central object and the distance between them, not the mass of the orbiting object. Therefore, the time for the satellite to orbit the planet would remain the same.

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Answer:

See explanation

Explanation:

It is a common observation that when water drops on a clean glass surface, it appears as little bags of water.

Surface tension makes water surface act like a stretched elastic skin bag.

Surface tension is caused by attractive forces between the molecules at the surface and the molecules in the bulk of a liquid. Remember that the forces of cohesion between water molecules are very strong.

When surfactants such as soap are added to water, the surface tension of water is decreased, hence the experiment.

The three essential diagnostic features of anorexia nervosa, as defined by the Diagnostic and Statistical Manual of Mental Disorders (DSM-5), are:

It is important to note that these diagnostic features must be present and significantly impair the individual's functioning in order to meet the criteria for anorexia nervosa. Additionally, there may be other associated features and behaviors,

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In a purely resistive circuit, the phase difference between the voltage and current is zero, which means the circuit consumes all the power delivered to it by the source. In other words, the power delivered is entirely converted into heat energy dissipated by the resistance. Therefore, 100% of the apparent power is used or consumed in a purely resistive circuit. So this statement is true.

Apparent power is the product of the root mean square (RMS) voltage and RMS current, and it represents the total power delivered to the circuit. In a purely resistive circuit, the apparent power and real power are equal since there is no reactive power. Reactive power arises in circuits with inductance and capacitance, where energy is stored and returned to the circuit, leading to a phase shift between voltage and current.

In a purely resistive circuit, the current and voltage are in phase with each other, meaning they reach their maximum and minimum values at the same time. This results in a power factor of 1, which indicates that all of the apparent power drawn by the circuit is converted into real power, which is the actual power consumed by the resistive elements in the circuit. Therefore, it is true that 100% of the apparent power is used or consumed in a purely resistive circuit.

This is not the case in circuits that have reactive elements, such as inductors and capacitors, where the current and voltage are out of phase with each other. This results in a power factor that is less than 1, and the apparent power drawn by the circuit includes both real power and reactive power. In such cases, some of the apparent power is not consumed by the resistive elements but instead is stored in the reactive elements and returned to the circuit at a later time.

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The distance moved by the object in the direction of the force is equal to 16 m. Therefore, option (B) is correct.

Work can be demonstrated as the energy employed when a force is exerted to move an object through a specific distance. The work done depends upon both the exerted force on the object and the displacement.

The action of the force when the object is moving in a straight line in the direction of the exerted force over a distance 'd'.

W= F ×d

Where 'd' is the displacement, 'F' is the applied force and W is the work done.

Given, the work done by the applied force, W = 400 J

The force applied on the object, F = 25 N

The distance moved by the object, d = W/F

d = 400/25

d = 16 m

Therefore, the object moves a distance of 16 m in the direction of the force.

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Answer: b

Explanation:

It is based on an observation of a natural phenomenon can be answered by a scientific investigation. Thus option B is correct.

Scientific investigation can be defined as a continuous process involving different steps to find out the answer to a specific scientific question by using scientific method.

The basic steps includes observation, which can be further used to develop, design of experiment and improve a hypothesis and an explanation based on an observed phenomenon.

There are different steps involved  in Scientific Investigation such as

• Observation is the first step of the scientific investigation to observe the process involve in  the step of inspection and conduction of  the investigation by asking questions.

• Asking Questions is purely based on observation and it make sure that every detail is already known and a query existing can be solved quickly.

• making of a Hypothesis involves proper explanation of  the query and it is most important part of the scientific investigation, it can come from a phenomenon.

• conclusion involves to the information drawn out, follow a proper scientific or a mathematical statement followed by Communication of the information from the investigation

Thus option B is correct.

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Answer:

greater then five

Explanation:

Answer:

Equal to 5

Explanation:

Newton's third law. Hit the baseball or kick the soccer ball with a small amount of force. The ball will not travel very far. Then, hit or kick the ball with a large amount of force and watch what happens. The ball will have an equal and opposite reaction to the amount of force it his hit with.

The cost of using Mastering Physics can vary depending on several factors, such as the institution and the specific course. The cost of these codes can range from $50 to $150 or more, depending on the length of access and the number of courses included.

Some institutions may include the cost of using Mastering Physics as part of their tuition fees. Typically, students purchase access codes that are valid for a certain period. Mastering Physics is an online platform designed to supplement physics courses for students. It provides interactive tutorials, homework assignments, and other educational resources to enhance the learning experience.

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Answer:

blc losing is part of life and u learn how do it again with losing and then you get up and comes to be a winner

Explanation:

Acceleration

Now

Apply Newtons second law

To find frictional force we need coefficient of friction which is not given .

generally for car case the value of coefficient is 0.6-0.8 .

Putting max 0.8

Note:

Last part is assumption not accurate

The force acting on the sports car is the product of its mass and acceleration. The force on the car is 3300 N.

Force is an external agent acting on a body to deform it or to change it from the state of rest or motion. There are different kinds of forces such as frictional force, gravitational force, nuclear force, magnetic force etc.

Frictional force is acting as a hindrance to the motion of an object. The frictional force is the product of normal force and coefficient of friction.

According to second law of motion, force is the product of mass and acceleration.

Given mass m = 1000 Kg

change in velocity = 20 - 0 m/s

Acceleration = 20 m/s / 6.6 s

= 3.3 m/s².

Force = m a

= 3.3 m/s² × 1000 Kg

= 3300 N.

Now, product of this normal force and coefficient of static friction.

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Answer:

In what forms is the electrical energy that is supplied to a string of decorative lights dissipated? It is converted to thermal energy and light energy.

Answer:

Energy loss. When energy is transformed from one form to another, or moved from one place to another, or from one system to another there is some energy loss. This means that when energy is converted to a different form, some of the input energy is turned into a highly disordered form of energy, like heat.

Energy losses in lights are very large; most of the input energy is lost in the form of heat energy.

Explanation:

The time the trip would take based on the information provided can be expressed as distance/10 mph.

The time of the trip in the boat depends on two factors, the first one is the real speed of the boat and the second one is the distance covered.

Time: Distance/speed

Time: distance/10mph

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Answer:

as the mass of an object is increased, the acceleration of the object is decreased & vice-versa.

Explanation:

hope this helps!

A dirty headlight lens headlight lens can cut the amount of light it emits by 90%.

A dirty headlight lens has the ability to reduce the amount of light emitted by the lens by 90%. A plastic lens is commonly used to cover the headlight bulbs. The primary function of a plastic lens is to keep these bulbs from becoming blurry or clouded.

It was demonstrated that dirt is accumulated even when the road appears to be in good condition, and that even a little amount of dirt produces increased glare from low beam and decreased vision from high beam. Visibility is always lost when light levels are reduced by more than 20%.

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Answer:

Sunscreen is like a shield, you would want a better shield to protect you than a weak one so companies try to make their sunscreen better than the rest.

Explanation: UV light is very dangerous to the skin so it helps with sunburn,skin sensitivity,etc.

Answer: A

Explanation:

Pulmonary - is lungs

Systemic - is body system

A system of laws is held to a standard by fundamental law, also known as organic law.

The majority of state and federal constitutions are regarded as prime instances of basic law. A system of fundamental laws lays out the guiding principles upon which all other laws must be based.

This type of law is employed in a constitution to establish the fundamental categories of rights and obligations for both citizens and the government.

For instance, the US Constitution outlines some of the most important rights of US citizens while also granting the government both powers and constraints.

Therefore, A system of laws is held to a standard by fundamental law, also known as organic law.

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The time at which the particle first passes through its equilibrium position is (b) 1/32 seconds.

The correct answer is (b) 1/16 s.

To find the time at which the particle first passes through its equilibrium position, we need to find the time when x = 0. We know that x = 5cos(16mt), so we set this equation equal to zero and solve for t:

5cos(16mt) = 0

cos(16mt) = 0

16mt = (2n + 1)π/2 where n is an integer

To find the time when the particle first passes through its equilibrium position, we take n = 0, which gives:

16mt = π/2

t = π/32

Therefore, the time at which the particle first passes through its equilibrium position is 1/16 s.

Simple harmonic motion is a type of periodic motion where the displacement of a particle is proportional to a sinusoidal function of time, and the motion repeats itself after a fixed time interval called the period. The displacement equation of a simple harmonic oscillator is typically of the form x = A cos(ωt + φ), where A is the amplitude, ω is the angular frequency, t is the time, and φ is the phase angle.

In this problem, we are given the displacement equation of a simple harmonic oscillator, x = 5cos(16mt), where 5 mm is the amplitude and 16m is the angular frequency. The period of the motion is T = 2π/ω = π/8 s. We are asked to find the time when the particle first passes through its equilibrium position, which is the point of zero displacement. By setting x = 0, we solve for t and find that the particle passes through its equilibrium position at t = 1/16 s.

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None

because 9 + 5 = 10 why? because 4 of the ones in nine are liars pretending to be apart of the number so in reality there is only 5 and 5+5=10

If the bob's mass is increased by a factor of 4, the pendulum's new period can be determined by analyzing the relationship between the period and the length of the pendulum.

The period of a simple pendulum is given by the formula: T = 2π√(L/g), where T is the period, L is the length of the pendulum, and g is the acceleration due to gravity.

Assuming the length of the pendulum remains constant, the only factor that changes is the acceleration due to gravity. Since the acceleration due to gravity remains constant on Earth, increasing the mass of the bob will not directly affect the period of the pendulum.

Therefore, the **pendulum's new period** will remain the same (T) even if the bob's mass is increased by a factor of 4.

In conclusion, the pendulum's new period will be **the same as the original period (T)**.

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Answer:

twice as much work

Explanation:

Observed temperature increases are best represented when it includes the influences of increases in greenhouse gases.

What are greenhouse gases ?

Greenhouse gases are gases in the atmosphere that affect the earth's energy balance. They cause the so-called greenhouse effect. Carbon dioxide (CO2), methane, and nitrous oxide, the best-known greenhouse gases, occur naturally in the atmosphere at low concentrations. However, since the beginning of the last century, its proportion has increased significantly due to various anthropogenic causes.

Besides these trace gases, which occur only in very low concentrations in the atmosphere, water vapor is probably the most important greenhouse gas. However, its ability to absorb water vapor from the air is directly related to temperature, so it only plays a major role with respect to the natural greenhouse effect. Therefore, water vapor contributes little to man-made climate change.

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About 22.8 millicoulombs of charge has been stored in a capacitor of capacitance 152 µf when a total voltage of 150 v is applied to this capacitor.

The capacity of a component or circuit to gather and hold energy in the form of an electrical charge is known as capacitance. Devices that store energy include capacitors, which come in a variety of sizes and forms.

When any capacitor is being linked to a battery with a specific voltage, its capacitance can be totally calculated by measuring the charge held on each plate.

The capacity of this capacitor that is calculated in order to store energy in the form of electric charge is known as the capacitance.

Here we know that we have,

C= 152 uf

V=150v

Q =?

Q= CV

= 152 x10^6 x 150

= 22800 x 10^6

= 22.8 x 10^6

= 22.8 millicoulomb

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