A man is pulling a 20 kg cart up a hill that is 5 m high if he used 50 N force how far did he pull the cart for

First, let

f = mag. of static friction

n = mag. of normal force

w = m g = mag. of gravitational force (the weight of the block)

m = mass of the block

g = 9.80 m/s² (the mag. of the acceleration due to gravity)

a = acceleration of the block

It's the static friction that interests us at the moment "when it begins to slide", meaning the precise moment at which static friction is at its maximum. At that point, the friction has magnitude f such that

f = 0.5 n

The problem is much easier to work through if you split up the forces into components acting parallel and perpendicular to the ramp. By Newton's second law, we have

• the net force acting parallel to the ramp is

∑ F = - f + w sin(30°) = m a

• and the net force acting perpendicular to the ramp is

∑ F = n - w cos(30°) = 0

Hence the net force on the block as it begins to slide acts only in the parallel direction. Note that we take the positive parallel direction to be the one in which the block slides down the ramp (i.e. opposing the friction force), and the positive perpendicular direction to be the same as the normal force.

Solve the second equation for n :

n = m g cos(30°) = (100 kg) (9.80 m/s²) cos(30°) ≈ 849 N

Then

f = 0.5 (849 N) ≈ 424 N

and so the net force on the block is

∑ F ≈ - 424 N + (100 kg) (9.80 m/s²) sin(30°) ≈ 65.6 N

Next, you want to find the acceleration of the block as it is sliding down the ramp, during which time kinetic friction kicks in. We have the same equations as above, except now f = 0.3 n. So we still have n ≈ 849 N, which gives

f = 0.3 (849 N) ≈ 255 N

∑ F = - f + w sin(30°) = m a

→   - 255 N + (100 kg) (9.80 m/s²) sin(30°) ≈ (100 kg) a

→   a ≈ 2.35 m/s²

Answer:

i got you there

Explanation:

the kinetic theory is that what ever that is in motion stays in motion

The kinetic energy of the mass a maximum b)when the spring is most stretched .So, correct option is b.

The mass has arrived at its most extreme speed in this way, the kinetic Energy of the mass is at a greatest. At absolute bottom of the movement. The Possible Energy of the spring is at a greatest since the spring is extended at its most extreme expansion. After a mass joined to the free finish of the spring is delivered, it sways this way and that. Its kinetic Energy and Potential Energy stay consistent. Since the mass goes through the balance point, the kinetic Energy arrives at its greatest.

At the point when the kinetic Energy is greatest, the Potential Energy is zero. This happens when the speed is greatest and consequently the mass is at the harmony position. The Potential Energy is greatest among all points when the speed is zero.

Hence, correct option is b.

To know more about kinetic energy, visit here:

https://brainly.com/question/26405082

#SPJ4

(Complete question) is:

when is the kinetic energy of the mass a maximum?

a) both when the spring is most compressed

b)when the spring is most stretched

c)at both point

d)remains same at all point

Answer:

eye ,mouth,and,ears face

Answer:

knee, elbow, and wrist

Explanation:

During photosynthesis, the hydrogen atoms come from water molecules that are split apart by light energy in the process called photolysis. The oxygen atoms, on the other hand, come from the same water molecules as the hydrogen atoms. They are released into the atmosphere as a by-product of photosynthesis. So, both the hydrogen and oxygen atoms that become part of the glucose molecule come from water molecules.

To know more about photosynthesis, click here:-

https://brainly.com/question/29764662

#SPJ11

A fully charged HV battery should show voltage levels to within 3% of specifications.

A High Voltage (HV) Battery is an electric vehicle's most crucial component. HV batteries are responsible for propelling electric cars by producing power. As a result, a fully charged HV battery should display voltage levels to within 3% of the specifications to provide maximum performance and lifespan. The voltage levels of the HV battery are monitored by the Battery Management System (BMS) (BMS).The Battery Management System (BMS) (BMS) is the electric vehicle's computerized system that monitors the battery's performance, safeguards it against damage, and informs the driver of any system issues. The BMS uses voltage and current sensors to monitor the battery's state of charge and power output in real-time. The Battery Management System (BMS) calculates the battery's available power and energy and its state of charge based on the monitored data.The Voltage level of a battery shows the strength of the battery. If a battery's voltage level is low, it means that the battery is weak and will not last long. Therefore, a fully charged HV battery should show voltage levels to within 3% of specifications to provide the best performance and lifespan. Any deviation from this range will decrease the battery's overall performance and lifespan.

A fully charged HV battery should show voltage levels to within 3% of the specifications to provide maximum performance and lifespan. The Battery Management System (BMS) monitors the voltage levels of the battery to ensure that it is functioning correctly. If the battery's voltage level is below the specified range, it will impact the battery's overall performance and lifespan.

To learn more about Battery Management System visit:

brainly.com/question/30637469

#SPJ11

A sound wave is produced when a medium begins to vibrate. When an entity vibrates, a pressure wave is formed, which causes sound.

When an object vibrates, a pressure wave is created, which produces sound. The particles in the surrounding medium (air, water, or solid) vibrate as a result of the pressure wave.

The vibrations of the particles move nearby particles, allowing the sound to travel further through the medium.

Hence a sound wave is produced when a medium begins to vibrate.

To learn more about the sound wave refer to the link;

https://brainly.com/question/11797560

Answer:

vibrate

Explanation: slaaauyy

Answer:

The net force that acts on the sailboat has a magnitude of 217 N and is applied at an angle of 64° north of east.

Explanation:

Mechanical Force

The second Newton's law states the net force exerted by an external agent on an object of mass m is:

\(\vec F = m.\vec a\)

Where \(\vec a\) is the acceleration of the object. Note both the force and the acceleration are vectors. The relationship between them is the mass, a scalar.

This means the net force and the acceleration have the same direction.

The sailboat has a mass m= 350 Kg and moves at a=0.62 m/s^2. The magnitude of the net force acting on the boat is:

\(F=0.62 * 350=217\ N\)

As stated above its direction is the same as the acceleration, thus:

The net force that acts on the sailboat has a magnitude of 217 N and is applied at an angle of 64° north of east.

The net force that acts on the sailboat has a magnitude of 217 N and is applied at an angle of 64° north of east.

Here this law of motion should be applied

We know that

F = ma

Here m means the mass

And, the a means the acceleration

Since m is 350 kg

And, a is 0.62

so the net force should be

= 350 * 0.62

= 217 N

Also the direction should be the same

hence, The net force that acts on the sailboat has a magnitude of 217 N and is applied at an angle of 64° north of east.

Learn more about force here: https://brainly.com/question/17552267

the options that are on the electromagnetic spectrum are invisible light (including UV radiation, X-rays, and gamma rays) and microwaves.

What is electromagnetic spectrum?

The electromagnetic spectrum includes all types of electromagnetic radiation, which are waves of energy that travel through space. Sound waves, on the other hand, are not on the electromagnetic spectrum because they are mechanical waves that require a medium to travel through, such as air or water.

Alpha rays, also known as alpha particles, are not on the electromagnetic spectrum either. They are actually particles that consist of two protons and two neutrons and are emitted by some radioactive materials.

Invisible light is a term that refers to electromagnetic radiation that is not visible to the human eye. This includes ultraviolet (UV) radiation, X-rays, and gamma rays, which have shorter wavelengths and higher energy than visible light.

Microwaves are on the electromagnetic spectrum and have longer wavelengths and lower energy than visible light. They are often used for communication and cooking food.

Otonal waves are not a known type of wave and are not on the electromagnetic spectrum.

In summary, the options that are on the electromagnetic spectrum are invisible light (including UV radiation, X-rays, and gamma rays) and microwaves.

To know more about electromagnetic visit:-

https://brainly.com/question/1408043

#SPJ1

Hybrid

Hybrid modified the concept by adding an internal combustion engine and marketing hybrids that were part electric and part gas powered.

To learn more about hybrid vehicles visit:

https://brainly.com/question/14610495

#SPJ4

(A) is that the wavelength of the fundamental mode of vibration of the string can be found using the equation λ = 2L, where L is the length of the string. Therefore, the wavelength of the fundamental mode of vibration of the string in this case would be 5.20m.

As for (b), we cannot find the frequency of this mode with the given information. In order to find frequency, we need to know the speed of the wave on the string.

This information is not provided in the question, so we cannot find the frequency.

In summary, the wavelength of the fundamental mode of vibration of the string can be found using the equation λ = 2L, which gives a result of 5.20m. We cannot find the frequency of this mode without knowing the speed of the wave on the string.

Learn more about wavelength click here:

https://brainly.com/question/10728818

#SPJ11

Answer:

Explanation:

\(m =800kg\\v = 15\\\\K.E = \frac{1}{2}mv^2\\ K.E= \frac{1}{2} \times 800\times 15^2\\= 400 \times 225\\= 90000 joules\\= 90 kilojoules\)

Explanation:

600 ÷ 60 = 10

1500 ÷ 10 = 150 minutes

I don't know how you should express the answer in:

So it's either 150 minutes or 2 hours and 30 minutes.

(This is kind of like mathematics, not physics)

Answer:

true

Explanation:

1. Stance

2. Nock

3. Set Draw Hand

4. Set Bow Hand

5. Pre-Draw

6. Draw

7. Anchor

8. Aim

9. Shot Set Up

10. Release

11. Follow-Through & Reflect

Explanation is in the file

tinyurl.com/wpazsebu

Answer: The particles of a solid are [generally] closest together while those of a gas are farthest apart

Explanation:

Answer:

\(9.7\times 10^{-4}\ rad/s\)

Explanation:

Given:

\(m=500 kg\\F=3000 N\)

\(Radius of earth , R=6371 \times 10^3\ m\\Angular speed =\omega\\We\ know\ that\ \\F= m\times \omega^{2} \times R\\\omega^{2}=\frac{F}{m*R} \\\\=\frac{3000}{500*6371 \times 10^3\ m}\)

=\(\frac{6}{6371 \times 10^3\ m}\)

=\(9.7\times 10^{-4}\ rad/s\)

C.1. The two basic premises for the special theory of relativity are: The laws of nature are the same for everyone and The speed of light is the same for everyone.

The special relativity theory is based on two fundamental tenets: that the light speed should be constant in all inertial frames of reference and that the rules of physics ought to be independent of a uniform motion of such a frame.

The separation of two occurrences in space and time, an object's energy momentum, and of course his speed of light are all examples of absolute dimensions of space and time that Einstein also specified.

To know more about speed of light visit:

https://brainly.com/question/29216893

#SPJ4

The correct option is A. Por lo tanto, la magnitud de la velocidad aumentará al doble cuando la frecuencia angular se duplique.

ω' = 2ω = 2(v/R)

Para encontrar la magnitud de la velocidad v' correspondiente a la nueva frecuencia angular ω', podemos despejar v de la ecuación original:

v = ωR

Por lo tanto, la nueva magnitud de la velocidad v' será:

v' = ω'R = (2ω)R = 2v

The circular uniform motion refers to the motion of an object traveling in a circular path at a constant speed. This type of motion is characterized by the fact that the object travels the same distance in the same amount of time, regardless of its position in the circular path.

Circular uniform motion can be described using a number of different physical quantities, including velocity, acceleration, and force. The velocity of an object in circular uniform motion is always tangent to the circular path, while the acceleration is directed towards the center of the circle and has a magnitude equal to the square of the object's speed divided by the radius of the circle. This is known as centripetal acceleration.

Circular uniform motion is observed in a wide range of phenomena in the natural world, from the motion of planets and moons in orbit around a star to the motion of particles in a circular accelerator, and the motion of cars around a banked turn on a racetrack.

To learn more about Circular uniform visit here:

brainly.com/question/30760049

#SPJ4

ANSWER:

85.97 m/s

STEP-BY-STEP EXPLANATION:

Bernoulli’s theorem is written as:

The potential energy is zero as the height is same, therefore:

The air speed above the wings is 85.97 m/s

The resulting equation of motion for the system is given by m × x''(t) + k × x(t) = f(t), which is 2 × x''(t) + 18 * x(t) = 2 * sin(2t).

What is  equation of motion?

The equations of motion are a set of mathematical relationships that describe the motion of objects under the influence of forces. There are different sets of equations of motion, depending on the specific scenario and the type of motion being considered (linear motion, projectile motion, circular motion, etc.). The equations of motion for linear motion, also known as the equations of uniformly accelerated motion.

To find the equation of motion for the system, we start with Newton's second law of motion, which states that the sum of forces acting on an object is equal to the mass of the object multiplied by its acceleration. In this case, the object is the 2-kg mass attached to the spring.

The force exerted by the spring is proportional to the displacement of the mass from its equilibrium position, and it can be expressed as F_spring = -k× x(t), where k is the spring constant and x(t) is the displacement of the mass at time t.

In addition to the force exerted by the spring, there is an external force f(t) = 2 ×sin(2t) acting on the mass.

Applying Newton's second law, we have the equation of motion: m ×x''(t) + k ×x(t) = f(t).

Substituting the given values, m = 2 kg and k = 18 N/m, we obtain 2 ×x''(t) + 18 × x(t) = 2 ×sin(2t).

Therefore, the resulting equation of motion for the system is 2 × x''(t) + 18 × x(t) = 2 × sin(2t).

To know more about equation of motion, refer here:

https://brainly.com/question/29278163#

#SPJ4

The magnetic field strength inside a current-carrying coil is determined by the amount of current flowing through the coil and the number of turns in the coil, as well as the permeability of the material inside the coil.

In the given options, a vacuum has the highest permeability, so the magnetic field strength inside a current-carrying coil will be greater if the coil encloses a vacuum. Therefore, the correct answer is (E) vacuum.

To know more about magnetic field refer here

https://brainly.com/question/14848188#

#SPJ11

Answer:

Explanation:

Answer:

:DDDDD thanks foooooooor joinin'

Explanation:

Answer:

14 km away and a turn of 90°

Explanation:

brailiest pls pls pls

Answer:

\( \boxed{\sf Power \ in \ the \ circuit = 14.4 \ kW} \)

Given:

Current (I) = 12 A

Resistance (R) = 100 Ω

To Find:

Power (P) in the circuit

Explanation:

Formula:

\( \boxed{ \bold{P = I^2 R}}\)

Substituting value of I & R in the equation:

\( \sf \implies P = {(12)}^{2} \times 100 \\ \\ \sf \implies P = 144 \times 100 \\ \\ \sf \implies P = 14400 \: A^2.\Omega \\ \\ \sf \implies P = 14400 \: W \\ \\ \sf \implies P = 14.4 \: kW\)

\( \therefore\)

Power (P) in the circuit = 14.4 kW

Sputnik 1, the first man-made satellite, was released by the Eastern Bloc on October 4, 1957, as part of the Sputnik project, with Sergei Korolev serving as the program's primary designer.

There are a large number of satellite in use. They serve several functions, including the Satellite Navigation System, amateur radio, television transmission, and weather prediction. In order to conduct studies and acquire data, they also employ telescopes to gaze outwards at the solar system.

Natural and artificial satellite are two distinct categories. The Earth and the Moon are two examples of organic satellites. The Moon orbits the earth while the Earth revolves around the Sun.

To know more about satellite visit:

https://brainly.com/question/29849775

#SPJ4

When the pressure is 300 mmHg, the gas has an 800 cc volume.

According to this, a gas's volume drops as pressure on it rises at a constant temperature. In other words, while the temperature and the quantity of molecules are both constant, Boyle's law states that volume is inversely proportional to pressure.

The answer to the dilemma is that at constant temperature, the relationship between the gas's volume (V) and pressure (P) is inverse.

V ∝ 1/P

or

V = k/P

V = 1200 cc when P = 200 mmHg

These values are put into the formula above to get the following results:

1200 = k/200

k = 240000

V = 240000/300

V = 800 cc.

To know more about pressure visit:-

https://brainly.com/question/14869644

#SPJ4