A Boy can raise a load of 200N up to a
height of 2.5m in 15 seconds. calculate his
power​

Answer:

A goal keepee catering the ball in time is answer

Answer:

Explanation:

What is your question? There is multiple questions to answer...

Answer:

what question u want

Explanation:

1.47  is the coefficient of static friction between a mass of 0.75kg and a horizontal surface

m=0.75 KG

g=9.8 M/S^2

N=5 N

F=µN

µ=F/N

µ=mg/N

µ=0.75×9.8÷5

µ=1.47

We are physically surrounded with friction. An object moving along a path is resisted by a force known as static friction. Lastly, use an easy example to comprehend it. Think about the activity we perform frequently called walking. We are constantly in contact with the floor while we work. Motion presses against the ground as we move it backward, and we then advance our feet.

One key concept to be aware of in order to minimize friction is the fact that it operates in the opposite direction from relative motion. This phenomena may be useful for reducing the speed of the action until it eventually comes to a stop.

To know more about   static friction visit : brainly.com/question/13000653

#SPJ9

This question can be easily solved by using the law of conservation of energy.

The work done by the friction is "9.9 J".

The law of conservation of energy applied to this condition gives the following equation:

\(Potential\ Energy\ Lost\ by\ Block = Energy\ Stored\ by\ Spring\ +\ Work\ done\ by\ friction\\\\mgh = \frac{1}{2}kx^2\ +\ W\)where,

W = Work done by friction = ?

m = mass of the block = 4.8 kg

g = acceleration due to gravity = 9.81 m/s²

h = height = 0.52 m

k = spring constant = 2000 N/m

x = compression distance = 12.1 cm = 0.121 m

Therefore,

\((4.8\ kg)(9.81\ m/s^2)(0.52\ m)=\frac{1}{2}(2000\ N/m)(0.121\ m)^2+W\\W = 24.5\ J - 14.6\ J\)

W = 9.9 J

Learn more about the law of conservation of energy here:

brainly.com/question/20971995?referrer=searchResults

The attached picture explains the law of conservation of energy.

Answer:

About 37.70 radians.

Explanation:

1 revolution = 2\(\pi\) radians

∴ 6 revolutions = (6)(2\(\pi\) radians)

6 revolutions = 37.6991 or ≈ 37.70 radians

Answer:

S = Vx t = 900 t

t = 150 / 900 = 1/6 sec  

If the bullet is fired horizontally it will travel 900 m in .167 sec

H = 1/2 g t^2 = 1/2 * 10 * (1/6)^2 = .139 m      distance bullet will fall

Answer:

T = 676 N

Explanation:

Given that: f = 65 Hz, L = 2.0 m, and ρ = 5.0 g\(/m^{2}\) = 0.005 kg

A stationary wave that is set up in the string has a frequency of;

f = \(\frac{1}{2L}\)\(\sqrt{\frac{T}{M} }\)

⇒      T = 4\(L^{2}\)\(f^{2}\)M

Where: t is the tension in the wire, L is the length of the wire, f is the frequency of the waves produced by the wire and M is the mass per unit length of the wire.

But M = L × ρ = (2 × 0.005) = 0.01 kg/m

T = 4 × \(2^{2}\) ×\(65^{2}\) × 0.01

   = 4 × 4 ×4225 × 0.01

   = 676 N

Tension of the wire is 676 N.

The weight of the rover vehicle on Earth, given that it weighs 37 N on Mars is 99.5 N

We'll begin by obtaining the mass of the rover vehicle. This is shown below:

Weight (W) = mass (m) × Acceleration due to gravity (g)

W = mg

Divide both sides by g

m = W /g

m = 37 / 3.72

m = 9.95 Kg

Now, we shall determin the weight of the rover vehicle on Earth. Details below:

Weight (W) = mass (m) × Acceleration due to gravity (g)

Weight (W) = 9.95 × 10

Weight = 99.5 N

Thus, we can conclude that the weight on Erath is 99.5 N

Learn more about weight:

https://brainly.com/question/22881705

#SPJ1

Answer:

NATURAL

Explanation:

well this is because a firefly isn't man- made it is a firefly it isn't a robot, it is an insect.

Answer:

Gases obey the ideal-gas law at high temperatures and low pressures.

Explanation:

Answer:

Role of government in regulating production

Explanation:

The role of government in regulating show , provides the legal and social framework, uphold competition, provides public goods and services.

The community's role in conserving and enhancing common-property resources is well known.

In extra, its role in helping market growth by its power to execute trade agreements among transacting parties belonging to the community network is stressed.

Thus, it provides the legal and social framework, maintains competition, and provides public goods and services.

To learn more about  economics in community click here:

https://brainly.com/question/1344575

Robert Nozick opines that individuals own themselves and hence have a right to own property.

The term utilitarianism refers to the philosophical ideology that in the use of commodities, the best options is that which maximizes utility or satisfaction derived from the commodity.

In the position of Robert Nozick, utilitarianism means that individuals own themselves and hence have a right to own property.

Learn more about utilitarianism : https://brainly.com/question/10548094

Given,

The length, diameter, and density are given, i.e., the length, diameter and density of the string are constant.

The tension on the string, T₁=100 N

The frequency of the sound, f₁=200 Hz

The tension on the string and the frequency of the sound is related as,

Where m is the mass of the string and l is the length of the string.

On rearranging the above equation,

As the length, diameter, and density of the string is constant,

A.

Given,

Tension in the string, T₂=900 N

The frequency of the string after the change in the tension is given by,

On substituting the known values,

Thus the frequency of the sound after the tension on the string changes to 900 N is 1800 Hz, i.e., 1800 vibrations are produced per second.

B.

Given,

The tension on the string, T₃=25 N

The frequency of the string after the tension changes to 25 N is given by,

On substituting the known values,

Thus the frequency of the sound after the tension changes to 25 N is 50 Hz, i.e., 50 vibrations are produced per second.

Answer:

c- Time

Explanation:

The time will tell depending on the person who is exercising, the rate of time, the  workout time. & limits on weights....

Answer:

The guy above me is wrong the real answer is D

Explanation:

Answer:

Cats most commonly contract worms after coming into contact with parasite eggs or infected feces. A cat may walk through an area with eggs or infected feces, and since cats are often such fastidious groomers, they will then ingest the eggs or fecal particles as they clean their fur and feet.

Explanation:

this is the only thing in my book hope it helps

Answer:

P = density (p) * g * h

P = 1000  kg/m^3 * 9.8 m/s^2 * 40 m = 392,000 N/m^2

since kg m / s^2 = Newtons

The average pressure is 1/2 (pressure at 0m +  pressure 80 m) for liquid of uniform density

Answer:

\(v=3.4081\frac{m}{s}\)

Explanation:

\(F=ma\\F=12.4N\\m=7.9kg\\a=\frac{12.4N}{7.9kg}\\a=1.5696\frac{m}{s^2}\)

\(v^2=v_0^2+2a\Delta x\\v_0=0\frac{m}{s}\\a=1.5696\frac{m}{s^2}\\\Delta x=3.7m\\v^2=(0\frac{m}{s})^2+2(1.5696\frac{m}{s^2})(3.7m)\\v^2=11.6152\frac{m^2}{s^2}\\v=\sqrt(11.6152\frac{m^2}{s^2})\\v=3.4081\frac{m}{s}\)

Answer:

What are the best flowers? (My opinion)

Explanation:

You're welcome.

Answer:

Tulips,

Lilies,

Lotuses on my opinion...

Answer:

\(0.059\ \text{m/s}\)

Explanation:

\(m_1\) = Mass of bullet = 4.2 g

\(u_1\) = Initial velocity of bullet = 0

\(m_2\) = Mass of hunter with rifle = 69.5 kg

\(u_2\) = Initial velocity of hunter with rifle

\(v_1\) = Final velocity of the bullet = 970 m/s

\(v_2\) = Final velocity of the hunter with the rifle

As the momentum of the system is conserved we have

\(m_1u_1+m_2u_2=m_1v_1+m_2v_2\\\Rightarrow v_2=\dfrac{m_1u_1+m_2u_2-m_1v_1}{m_2}\\\Rightarrow v_2=\dfrac{0-0-0.0042\times 970}{69.5}\\\Rightarrow v_2=-0.059\ \text{m/s}\)

The recoil speed of the hunter is \(0.059\ \text{m/s}\) in the opposite direction of the bullet.

(a) The amplitude of the wave is 3 cm.

(b) The speed of the wave is 19.6 m/s

(c) The angular frequency is 653.72 rad/s.

(d) The period of the wave is 0.0096 s.

(e) The wavelength of the wave is 0.392 m.

The speed of the wave is calculated as follows;

\(v = \sqrt{\frac{T}{\mu} }\)

where;

\(v = \sqrt{\frac{50}{0.13} } \\\\v = 19.6 \ m/s\)

ω = v/r

ω = v/A

ω = 19.6/0.03

ω = 653.72 rad/s

\(T = \frac{2\pi }{\omega } \\\\T = \frac{2\pi }{653.72} \\\\T = 0.0096 \ s\)

v = fλ

λ = v/f

λ = 19.6/50

λ = 0.392 m

Learn more about wavelength here: https://brainly.com/question/10728818

#SPJ1

The distance traveled by the elevator is 2.0136 m.

Given values: Mass, m = 602 kg. Initial velocity, u = 0 m/s. Time taken, t = 2.60 s. Final velocity, v = 1.72 m/s.(a) Find the acceleration of the elevator. The formula to calculate the acceleration is given below:

a = (v - u)/t Substitute the given values in the above equation and get the acceleration value.

a = (1.72 - 0)/2.60a = 0.6615 m/s²Therefore, the acceleration of the elevator is 0.6615 m/s².

(b) Find the distance traveled by the elevator. The formula to calculate the distance is given below:

s = ut + 1/2at²Substitute the given values in the above equation and get the distance traveled by the elevator.

s = 0(2.60) + 1/2(0.6615)(2.60)²s = 2.0136 m.

For more question distance

https://brainly.com/question/13771806

#SPJ8

An inductance of 0.0191 H (19.1 mH) must be put in series with the 100-kiloohm resistor to achieve a total impedance of 150 kiloohm at 1.0 MHz.

What is Induction?

Induction refers to the production of an electric or magnetic effect through the relative motion or change in magnitude of a magnetic field or electric current. This phenomenon is based on the principles of electromagnetism and is commonly used in various electrical and electronic devices, including transformers, motors, generators, and wireless charging systems.

The total impedance can be calculated using the following formula:

Z_total = sqrt(\(R^{2}\) X_\(L^{2}\))

where R is the resistance (100 kiloohm) and X_L is the inductive reactance. We can rearrange this formula to solve for X_L:

At 1.0 MHz, the angular frequency is:

w = 2πf = 2π × 1.0 × \(10^{6}\) = 6.28 × \(10^{6}\)ad/s

The inductive reactance can be calculated using the following formula:

X_L = wL

where L is the inductance in henries. We can rearrange this formula to solve for L:

L = X_L / w

Now we can substitute the given values and solve for L:

X_L = sqrt((150 ×\(10^{3}\)) - (100 ×\(10^{3}\))) = 120 × \(10^{3}\) ohm

L = X_L / w = 120 × \(10^{3}\) ohm / 6.28 × \(10^{6}\) rad/s = 0.0191 H

Learn more about Induction from the given link

https://brainly.com/question/30049273

#SPJ1

Answer:

ε = 2 V/cm

Explanation:

To calculate the mobility inside this bar, we just need to apply the expression that let us determine the mobility. This expression is the following:

ε = ΔV / L

Where:

ε: Hole mobility inside the bar

ΔV: voltage applied in the bar

L: Length of the bar

We already have the voltage and the length so replacing in the above expression we have:

ε = 2 V / 1 cm

The data of the speed can be used for further calculations, but in this part its not necessary.

Hope this helps

The terminal velocity of the sphere is approximately 22.68 mph.

The terminal velocity of a sphere is the constant speed at which the gravitational force pulling the sphere down is balanced by the drag force pushing the sphere up. The drag force is proportional to the velocity of the sphere, and can be calculated using the following formula:

Fd = (1/2) * rho * Cd * A * v²

where Fd is the drag force, rho is the density of the fluid (air in this case), Cd is the drag coefficient (which depends on the shape of the object), A is the cross-sectional area of the object perpendicular to the direction of motion, and v is the velocity of the object.

The gravitational force pulling the sphere down is given by:

Fg = m * g

where m is the mass of the sphere and g is the acceleration due to gravity.

At terminal velocity, the drag force is equal in magnitude to the gravitational force, so:

Fd = Fg

Substituting the expressions for Fd and Fg and solving for v, we get:

v = √((2 * m * g) / (rho * Cd * A))

where A = pi * r² is the cross-sectional area of the sphere, and r is the radius of the sphere.

Plugging in the given values, we get:

v = sqrt((2 * 0.6 * 9.81) / (1.2 * 0.47 * pi * 0.3²)) ≈ 10.13 m/s

To convert this to mph, we multiply by 2.23694:

v ≈ 22.68 mph

To know more about terminal velocity, here

brainly.com/question/2654450

#SPJ1

Answer: 52 kg skydiver: 9.09 m/s and 522.55 s

              95 kg skydiver: 12.3 m/s and 386.2 s

Explanation: Drag Force is an opposite force when an object is moving in a fluid.

For skydivers, when falling through the air, the forces acting on it are gravitational and drag forces. At a certain point, drag force equals gravitational force, which is constant on any part of the planet, producing a net force that is zero. Since there is no net force, there is no acceleration and, consequently, velocity is constant. When that happens, the person reached the Terminal Velocity.

Drag Force and Velocity are proportional to the squared speed. So, terminal velocity is given by:

\(F_{G}=F_{D}\)

\(mg=\frac{1}{2}C \rho Av_{T}^{2}\)

\(v_{T}=\sqrt{\frac{2mg}{\rho CA} }\)

where

m is mass in kg

g is acceleration due to gravitational force in m/s²

ρ is density of the fluid in kg/m³

C is drag coefficient

A is area of the object in the fluid in m²

Calculating:

The 52kg skydiver has terminal velocity of:

\(v_{T}=\sqrt{\frac{2(52)(9.8)}{(1.21)(0.7)(0.14)} }\)

\(v_{T}=\) 9.09

The 95kg skydiver's terminal velocity is

\(v_{T}=\sqrt{\frac{2(95)(9.8)}{(1.21)(0.7)(0.14)} }\)

\(v_{T}=\) 12.3

The 52 kg and 95kg skydivers' terminal velocity are 9.09m/s and 12.3m/s, respectively.

The time each one will reach the floor will be:

52 kg at 9.09 m/s:

\(t=\frac{4750}{9.09}\)

t = 522.5

95 kg at 12.3 m/s:

\(t=\frac{4750}{12.3}\)

t = 386.2

The 52 kg and 95kg skydivers' time to reach the floor are 522.5 s and 386.2 s, respectively.

Many years before newton wrote this law, of motion stated the same idea as the principal of inertia.

Newton's first law states that if a body is at rest or moving at a constant speed in a straight line, it will remain at rest or keep moving in a straight line at constant speed unless it is acted upon by a force.

Newton's first law of motion is also called law of inertia because it depends on mass of the object.

Thus, many years before newton wrote this law, of motion stated the same idea as the principal of inertia.

Learn more about law of inertia here: https://brainly.com/question/1412777

#SPJ1

The 10/90 principle can be a powerful tool for taking control of your situation and improving your life. By taking responsibility for what you can change and focusing on your reaction to the situation, you can make positive changes in your life and become the master of your own destiny.

The 10/90 principle refers to the idea that life is made up of 10% of what happens to you and 90% of how you respond to it. In other words, you may not be able to control what happens to you, but you can control your reaction to it. By taking responsibility for what you can change rather than being a victim of what you cannot change, you can take control of your situation and improve your life.One example of a situation where the 10/90 principle could be applied is losing a job. Losing a job can be a devastating experience, and it can be easy to feel like a victim in this situation. However, by applying the 10/90 principle, you can take control of your situation and make positive changes in your life.The first step in applying the 10/90 principle in this situation would be to take responsibility for what you can change. This could mean updating your resume, networking with others in your field, and applying for new jobs. By taking action and doing what you can to find a new job, you are taking control of your situation and improving your chances of finding a new job.
The second step would be to focus on your reaction to the situation. Instead of dwelling on the negative aspects of losing your job, try to focus on the positive aspects. This could mean using the extra time to pursue a new hobby or spend more time with family and friends. By focusing on the positive aspects of the situation, you are taking control of your reaction and improving your overall well-being.
for such more questions on  principle

https://brainly.com/question/26117248

#SPJ8

Answer:

The end of the ramp is 38.416 m high

Explanation:

Horizontal Motion

When an object is thrown horizontally with an initial speed v and from a height h, it follows a curved path ruled by gravity.

The maximum horizontal distance traveled by the object can be calculated as follows:

\(\displaystyle d=v\cdot\sqrt{\frac {2h}{g}}\)

If the maximum horizontal distance is known, we can solve the above equation for h:

\(\displaystyle h=\frac {d^2g}{2v^2}\)

The skier initiates the horizontal motion at v=25 m/s and lands at a distance d=70 m from the base of the ramp. The height is now calculated:

\(\displaystyle h=\frac {70^2\cdot 9.8}{2\cdot 25^2}\)

\(\displaystyle h=\frac {4900\cdot 9.8}{2\cdot 625}\)

h= 38.416 m

The end of the ramp is 38.416 m high