a penny has a coefficient of static friction of 0.4 on a turntable which is spinning at 40 rpms. what is the maximum/minimum distance from the center at which the penny can be placed without sliding off?

If the total force applied by water in a vessel with a bottom area of 2 square meters is 450 newtons, then the water pressure at the bottom of the vessel would be 225 Pascals.

The total actionable force per unit of area is known as the pressure.

The pressure depends both on externally applied force as well the area on which it's applied.

The fine expression for the pressure

Pressure = Force/ Area

the pressure is expressed by the unit pascal or N/ m ²

There's a difference between the pressure and the stress in the material although both have the same fine expression.

To know more about force, visit:

https://brainly.com/question/13191643

#SPJ4

The fc of the skier equal to Fc= mg-N.

What is centripetal force?

Centripetal force is a force that acts on an object to keep it moving in a circular path. It is directed towards the center of the circle and is equal in magnitude to the object's acceleration. Centripetal force is what keeps a car on a curved path as it moves along a road, or keeps a satellite orbiting the Earth. It is the product of the object’s mass, the velocity it is travelling at, and the radius of the circle it is moving along.  

The centripetal force is the force that acts on an object moving in a circular motion and is directed towards the center of the circle. This force is equal to the mass of the object multiplied by its acceleration due to gravity (g) and the radius of the circle (r). Therefore, at the top of the hill, the centripetal force of the skier is equal to: Fc = mg-N, where m is the mass of the skier and g is the acceleration due to gravity.

Therefore, Fc= mg-N is the answer.

To learn more about centripetal force from the link

https://brainly.com/question/14249440

#SPJ4

Explanation:

according to formula

efficiency= work output/work input

:. 0.30=work output/120

work output = 36J

hope this helps you.

The initial pressure is PN2 = 218 torr.

What is pressure?

Pressure is a fundamental concept in physics, defined as the force exerted per unit area. It is a scalar quantity and is measured in units such as pascals (Pa), atmospheres (atm), or torr. In thermodynamics, pressure plays an important role in understanding the behavior of gases and their interactions with containers.

The initial pressure of N2 in the 1.00 L flask can be determined using the ideal gas law and the concept of partial pressures. The ideal gas law states that PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature (assumed to be constant). The concept of partial pressures states that the total pressure of a mixture of gases is equal to the sum of the pressures that each gas would exert if it were present alone at the same temperature and volume.

Given that the total pressure in the flasks is 332 torr after the stopcock is opened, the pressure of N2 can be found by subtracting the pressure of H2 from the total pressure:

Ptotal = PN2 + PH2

332 torr = PN2 + 389 torr

PN2 = 332 torr - 389 torr

PN2 = -57 torr

The pressure cannot be negative, so the correct answer is PN2 = 218 torr.

To learn more about pressure from the given link:

https://brainly.com/question/28012687

#SPJ4

The greatest height reached by the ball is 15.876 m and the ball left the kicker's foot with the initial speed of 17.64 m/s.

Let's first calculate the time taken for the ball to get to the greatest height. This can be obtained as follow:

Time of flight (T) = 3.6 s

Time taken to reach the greatest height (t) =?

T = 2t

3.6 = 2 × t

Now divide both sides by 2

t = 3.6 / 2

t = 1.8 s

Time taken to reach the greatest height is 1.8 seconds.

Acceleration due to gravity (g) = 9.8 m/s²

Greatest height (h) =?

h = ½gt²

h = ½ × 9.8 × 1.8²

h = 15.876 m

The greatest height reached by the ball is 15.876 m

Greatest height (h) = 15.876 m

Acceleration due to gravity (g) = 9.8 m/s²

Final velocity (v) = 0 (at greatest height)

Initial velocity (u) =.?

v² = u² – 2gh (since the ball is in opposite direction of gravity)

0² = u² – (2 × 9.8 × 15.876)

0 = u² – 311.1696

After Collecting like terms, we'll get;

0 + 311.1696 = u²

311.1696 = u²

By taking the square root of both sides, we will get the initial velocity.

u = √311.1696

u = 17.64 m/s

hence the ball left the kicker's foot with an initial speed of 17.64 m/s.

If you need to learn more about speed click here:

https://brainly.com/question/29496681

#SPJ4

Height should be above the ground  is 2Om

The three fundamental concepts in physics are power, energy, and work. A force (push or pull) is said to have accomplished work when it causes an object to move after being applied. We define the capacity to carry out the work in terms of energy. The amount of work finished in a specific length of time is known as power. The discussion of work, energy, and power is extensive on this page.

In order for labour to be accomplished, a force must be applied, and there must also be motion or displacement in the direction of the force. The work performed by a force acting on an object is defined as the force multiplied by the distance travelled in the force's direction. Work has no purpose and is only

P. E = mgh

when g= 10ms^-1

1000j = 5 × 10 × h

1000j = 50h

h = 1000 ÷ 50

h = 2Om

Learn more about Work Done from given link

brainly.com/question/25573309

#SPJ4

a) The rate at which the length of his shadow changes is 1.5 ft/s.

Given, the height of a man = 6 feet

Height of light = 16 feet

Rate of walk by man, dx/dt = 5 feet per second.

By using the ratio of similar triangles,

y/6=x+y/16

The rate of change of shadow is calculated by differentiating length with respect to time.

16y=6x+6y

10y=6x

10 dy/dt = 6 dx/dt

dy/dt = 3/10 * 5

dy/dt = 3/2

dy/dt=1.5 ft/sec

The length of your shadow depends on how tall you are and where the sun or source of light behind you is in relation to the ground. The lower the angle of the sun the longer the length of the shadow. Also the taller you are the longer the shadow.

The closer an object is to the light source, the larger the shadow it casts. This is because an object closer to the source will block a larger area of the light, increasing its shadow size.

Therefore, the rate at which the length of his shadow changes is 1.5 ft/s.

To know more about rate of change in quantities:

https://brainly.com/question/28658508

#SPJ4

The kinetic energy of a body whose mass is 150kg covering a total distance of 115km/hr is 76,512.27J.

Kinetic energy is the energy possessed by an object because of its motion, equal (nonrelativistically) to one half the mass of the body times the square of its speed.

Kinetic energy = ½ mv²

Where;

According to this question, a body of mass 150kg is covering a total distance of 115km/hr.

115km/hr = 31.94m/s

K.E = ½ × 150 × 31.94²

K.E = 76,512.27J

Therefore, 76,512.27J is the kinetic energy of the body.

Learn more about kinetic energy at: https://brainly.com/question/26472013

#SPJ1

Water flows near a flat surface and some measurements of the water velocity, u, parallel to the surface, at different heights y above the surface are obtained.

The basic units for length or distance measurements in the English system are the inch, foot, yard, and mile. Other units of length also include the rod, furlong, and chain. survey foot definition. In the English system, areas are typically given in square feet or square yards.

measurement, the process of associating numbers with physical quantities and phenomena. Measurement is fundamental to the sciences; to engineering, construction, and other technical fields; and to almost all everyday activities.

To know more about fundamental visit

https://brainly.com/question/2224584

#SPJ4

The density of gold can be calculated by dividing the mass of the gold nugget (16.60 g) by the volume of water it displaces (in cm3).

The density of a material can be calculated by dividing the mass of the material by its volume. The formula is Density = Mass/Volume. In this case, the mass of the gold nugget is given (16.60 g) and the volume of water it displaces can be measured by reading the graduated cylinder.

To calculate the density of gold, we need to know the volume of water that the gold nugget displaces. To find the volume, we can subtract the initial water volume (V1) from the final water volume (V2) after the gold nugget has been added. We can then use the formula density = mass/volume to find the density of the gold nugget.

Density = mass / volume

Density of gold = 16.60 g / (V2 - V1)

The volume of water displaced by the gold nugget needs to be measured in order to calculate the density of the gold nugget.

To know more about gold nugget visit:

brainly.com/question/28507154

#SPJ4

The combined velocity of the girl and platform (in m/s) after the jump is 0.99 m/s.

The definition of velocity is the rate at which a body moves in a particular direction. Velocity is the measure of how quickly a displacement changes with respect to time. A vector quantity with both magnitude and direction is velocity.

Velocity is measured in metres per second (m/s), the SI unit. Centimeters per second (cm/s) can also be used to describe the velocity magnitude.

Given:

m1 is mass of the girl = 39 kg

m2 is mass of the hanging platform = 125 kg

u1 is initial speed of the girl = 4.8 m/s

v is combined velocity of the girl and the platform after the jump

From the law of conservation of momentum,

m1u1 = (m1 + m2)v

v = m1u1/(m1+m2)

v = 39×4.7/(39+145)

v = 183.3/184

v = 0.99 m/s

To know more about velocity visit:

https://brainly.com/question/25749514

#SPJ4

The common angular speed is 6.5 x 10^⁻⁴ rad/s

To calculate the common angular speed of the reels during play, we need to first determine the linear speed of the tape on the outer reel. We can use the formula:

Linear speed = tape length / play time

So the linear speed of the tape on the outer reel is:

Linear speed = 281 m / (2 h * 3600 s/h)

                       = 0.078 m/s

Then we can use the formula for linear speed to find the angular speed:

Linear speed = angular speed x radius

So the angular speed of the outer reel is:

Angular speed = Linear speed / radius

= 0.078 m/s / (45 mm / 1000 m/mm)

= 1.7 x 10^⁻⁴ rad/s

The inner reel radius is 12mm, so the angular speed of the inner reel is:

Angular speed = Linear speed / radius

= 0.078 m/s / (12 mm / 1000 m/mm)

= 6.5 x 10^⁻⁴ rad/s

This is the common angular speed of the reels when both have the same angular speed.

Learn more about angular speed from

https://brainly.com/question/20432894

#SPJ1

At 21.6 m/s2, the wheel is speeding up angularly. In the case of a wheel with a radius of 0.15 m, the wheel starts out at rest and after 4 seconds, it has reached an angular speed of 12 rad/s.

In physics, angular acceleration refers to how quickly angular velocity changes over time. Since spin angular velocity and orbital angular velocity are two different forms of angular velocity, respectively, there are two different types of angular acceleration. Spin angular acceleration and orbital angular acceleration are the names for these. Angular speed is defined as the pace at which the angular displacement changes. Angular speed is measured in radian per second. The same equation can be used to define both angle speed and angle velocity.

angular acceleration = (12*12)*0.15 = 21.6 m/s^2

Learn more about speed here

https://brainly.com/question/28224010

#SPJ4

The engine provides power to accelerate the car at a rate of 75 * 1,000 / 60 = 7500 / 6 = 1250 metric tonnes / sec (power = m* v / t).

Things move more quickly when their rate, process, or other characteristics accelerate.It gets faster if the rate of anything accelerates or something accelerates it. The pace of growth will increase to 2.9% the following year.

Your transmission will deteriorate if you drive quicker since your motor will use more gasoline or diesel every mile. Furthermore, going so swiftly puts additional strain on your engine's tiny moving parts, which could hasten their wear-out.

To know more about accelerate visit:
https://brainly.com/question/907547

#SPJ4

The density of air decreases as the altitude increases. The Temperature value decreases as the pressure value decreases with an increase in altitude.

The density of air or atmospheric density, denoted ρ, is the mass per unit volume of Earth's atmosphere. Air density, like air pressure, decreases with increasing altitude. It also changes with variation in atmospheric pressure, temperature and humidity. At 101.325 kPa (abs) and 20 °C (68 °F), air has a density of approximately 1.204 kg/m3 (0.0752 lb/cu ft), according to the International Standard Atmosphere (ISA). At 101.325 kPa (abs) and 15 °C (59 °F), air has a density of approximately 1.225 kg/m3 (0.0765 lb/cu ft), which is about 1⁄800 that of water, according to the International Standard Atmosphere (ISA).[citation needed] Pure liquid water is 1,000 kg/m3 (62 lb/cu ft).

Air density is a property used in many branches of science, engineering, and industry, including aeronautics; gravimetric analysis; the air-conditioning industry; atmospheric research and meteorology; agricultural engineering (modeling and tracking of Soil-Vegetation-Atmosphere-Transfer (SVAT) models); and the engineering community that deals with compressed air.

Learn more about density of air at https://brainly.com/question/3551743.

#SPJ4

the gravitational potential energy is held by an object the heavier it is and the higher it is above the surface of the earth.As weight and height increase, gravitational potential energy rises.

A doubling in height will lead to a doubling in gravitational potential energy since an object's gravitational potential energy is directly proportionate to its height above the zero point.The gravity potential energy will triple with a tripling of height.

Three variables—mass, gravity, and height—determine the gravitational potential energy.Energy is directly inversely proportional to all three variables.

To know more about weight and height visit:

https://brainly.com/question/12123714

#SPJ4

An elastic head-on collision occurs between a 0.15 kg originally at rest and a 0.10 kg initially moving with a velocity of 0.2 m/s.

To learn more about collision refer to:

https://brainly.com/question/14527896

#SPJ1

A third mass of 0.30 kg needs to be hung at a height of 30 cm.

a numerical representation of the fundamental aspect of all material, inertia. It generally refers to the body of matter's opposition to changing its velocity or location in response to the force applied to it. The change caused by an applied force is lower the more mass a body has.

Clockwise and counterclockwise torques must balance

4 * (50 - 20) = .6 * (80 - 50) + .3 * L

g is left out here because it will cancel

Here we are assuming  the mass at L will generate aclockwise torque along with the .6 kg mass

so L is measured to the right of the 50 cm mark.

Solving the above equation  (12 - 18) / .3 = L =-20

So the weight must be hung at 50 - 20 = 30 cm

To know more about mass visit :

https://brainly.com/question/30337818

#SPJ4

The most accurate answer is D. As the red light falls into a black hole, its flashes would become progressively dimmer.

Distance is a numerical measurement of how far apart two objects or points are. It can be measured in different units such as kilometers, miles, meters, or feet. Distance is an important concept in physics, mathematics, and many other scientific disciplines. It is also used in everyday life to determine how long it takes to travel to a certain destination. Distance can be measured in both two and three dimensions, and is a fundamental part of understanding the world around us.

This is because the light would be redshifted due to the immense gravitational force, causing it to move further and further away from the visible spectrum, and eventually become invisible. The other answers are incorrect because the light would not change color or flash more quickly, but instead, its intensity would diminish and the wavelength of the light would be extended.
To know more about distance click-
https://brainly.com/question/26550516
#SPJ4

Complete questions as follows-
Viewed from a distance, how would a flashing red light appear as it fell into a black hole?
A. It would appear to flash more quickly.
B. Its flashes would appear bluer.
C. Its flashes would shift to the infrared part of the spectrum.
D. Its flashes would become progressively dimmer.

12.44 N torque will be required to bring a wheel.

Given information:

moment of inertia I = 8.0kg m²

kinetic energy = 155 joule

To find angular velocity

KE = 1/2 * Iω

ω = 6.2248 rad/s

Now through the kinematic equations of angular movement we will find the value of the angular acceleration, since this is equivalent to the change of the angular velocity in a certain time.

α = Δω/Δt

α = 1.5562 rad/s²

Finally, Torque's definition tells us that this is equivalent to the product between the moment of inertia and angular acceleration, therefore,

r = Iα                                       (r = torque)

r = 12.44 Nm.

Learn more about torque visit:

brainly.com/question/29363419

#SPJ4

The stated difference in air pressure between the outside and interior of a residence is 1528.86 Pa. (where the wind speed is zero).

The blades of a turbine, which resemble propellers and function much like an aeroplane wing, capture the wind's energy. A pocket or minimal air develops on one blade's other side as the wind blows. The blade is subsequently drawn into the low-pressure air pocket, which turns the rotor. It is known as lifting.

Spped of wind out side the home V₁ = 109 mph

= 109 * 1.608 Kmph

= 175.272Kmph

= 48.686 m/s

Spped of wind inside the home V₂ = 0 Kmph

Density of air ρ = 1.29Kg/m³

Bernoulli's equation states:

Pressure difference P = [tex]\mathrm{P}_2-\mathrm{P}_1=\frac{1}{2} \rho\left(v_1^2-v_2^2\right)[/tex]

= 0.5 * 1.29 * (48.686)²

= 1528.86 Pa

To know more about Wind visit:

https://brainly.com/question/15321264

#SPJ4

calculate the amplitude at point on the string a distance of 17.0 cm from the left-hand end of the string. express your answer in meters.

In this case, we are given the distance of the point from the left-hand end of the string, but we are not given the amplitude of the source. So, we cannot calculate the amplitude at the point using the information provided.

To calculate the amplitude at a point on a string, we need to know the amplitude of the source that is vibrating the string and the distance the point is from the source. To calculate the amplitude at a point on the string a distance of 17.0 cm from the left-hand end of the string, we can use the equation for a sinusoidal wave: y(x,t) = A * sin (2π (f(t-x/v)) ). Where A is the amplitude, f is the frequency, λ is the wavelength, t is time, v is the speed of the wave, and x is the position along the string.. Let's assume that the amplitude of the wave at the left-hand end of the string is A0. The amplitude at a distance of x = 17.0 cm from the left-hand end of the string is given by: A = A0 * cos(2π(x/λ)). We know that the distance is given in centimeters, but the formula is in meters, so we need to convert it to meters. The distance 17cm is equal to 0.17m. The amplitude at a point 17.0 cm from the left-hand end of the string is: A = A0 * cos(2π(0.17m/λ)).

Learn more about amplitude here:

https://brainly.com/question/8662436

#SPJ4

The momentum of the system is -20 kg*m/s in the negative x-axis direction.

What is momentum?

Momentum is a fundamental concept in physics that describes the motion of an object. It is a vector quantity, meaning it has both magnitude and direction. The momentum of an object is equal to its mass multiplied by its velocity, or p = mv. The direction of the momentum is the same as the direction of the velocity.

The momentum of a system can be determined by summing the momenta of the individual objects in the system. The momentum of an object is equal to its mass multiplied by its velocity. The direction of the momentum is the same as the direction of the velocity.

For the first object, the momentum is:

p1 = mi * vi

p1 = 6 kg * 13 m/s

p1 = 78 kg*m/s (in positive x-axis direction)

For the second object, the momentum is:

p2 = mz * vz

p2 = 14 kg * -7 m/s

p2 = -98 kg*m/s (in negative x-axis direction)

To find the total momentum of the system, we add the momenta of the two objects:

p_total = p1 + p2

p_total = 78 kgm/s + (-98 kgm/s)

p_total = -20 kg*m/s (in negative x-axis direction)

So the momentum of the system is -20 kg*m/s in the negative x-axis direction.

To learn more about momentum from the given link:

https://brainly.com/question/18798405

#SPJ4

The box reaches the bottom of the incline sooner than the disk by a distance equal to mgh/sin(θ). Express your answer in terms of some or all of the variables m , h , θ , and R , as well as the acceleration due to gravity g.

what is disk ?

A disk is a round, flat data storage device that is used in computers. It is composed of a metal or plastic disk and encased in a hard material such as metal, plastic, or rubber. The disk is divided into concentric circles, or tracks, which are divided into sectors. Data is stored on the disk in the form of magnetic or optical signals.

A disk drive is a device used to read and write data from and to a disk. It includes a spindle, which is the rotating part of the drive that holds the disk, and a read/write head that is used to read and write data. Data is read from and written to the disk by the read/write head, which is capable of moving along the surface of the disk.

To learn about more disk .

https://brainly.com/question/25996355

#SPJ4

Answer:[tex]\sqrt{\frac{3h}{gsin^2(\theta)} }-\sqrt{\frac{2h}{gsin^2(\theta)}}[/tex]

Explanation:

The current-carrying wire is the source(s) responsible for the magnetic field that exerts a force on the moving charge.

The same poles repel one another while opposite poles are attracted to one another. The north-seeking poles of the iron's atoms line up in the same direction when you rub it against a magnet. A magnetic field is produced by the force exerted by the aligned atoms.

The region surrounding a magnet where the effects of magnetism are felt is known as the magnetic field. To explain how the magnetic force is distributed in the area around and inside something magnetic in nature, we use the magnetic field as a tool.

To know more about magnetic field visit:

https://brainly.com/question/3757753

#SPJ4

The color of light that travels faster in crown glass is red.

The speed of light in crown glass is the speed of light in a vacuum divided by the index of refraction of crown glass.

The speed of light traveling in vacuum = 3 times 10 to the 8 meters per second

The index of refraction of the crown glass for red light = 1.513

The index of refraction of the crown glass for blue light = 1.529

Therefore:

The speed of red color = 1.983 times 10 to the 8 meters per second

The speed of blue color = 1.962 times 10 to the 8 meters per second

Hence, the red light travels faster.

To learn more about light travels, click here:

https://brainly.com/question/1831789

#SPJ4

The last child in the line has the greatest tangential acceleration and the last child in the line has the greatest radial acceleration are correct statements.

Acceleration is the rate of change of velocity over time. It is the rate at which an object's speed, direction, or both change. It can also be defined mathematically as the derivative of the velocity vector with respect to time. Acceleration is a vector quantity, meaning that it has both magnitude and direction. It is typically expressed in units of meters per second squared (m/s2).

All the children do not have the same tangential and radial accelerations as the accelerations depend on the position of the children in the line.

To know more about acceleration click-
https://brainly.com/question/605631
#SPJ4

Only force or a normal force pointing upward. A shift is parallel to some of these forces, therefore no work occurs. Considering that the item is sliding at such a set speed, there's no pressure as in displaced direction.

A surface is said to be frictionless if it has a force acting on any thing that is practically zero or insignificant, i.e., there is no resistance between the surface and the material, allow the substance to move and walk easily without any friction.

Since there are greater electromagnetic forces acting between the two surfaces when a surface has no roughness, it will have more static friction than a surface that is rough, making frictionless surfaces impossible. The author merely wishes to disregard drag for gentle slopes.

To know more about Frictionless visit:

https://brainly.com/question/25825478

#SPJ4

The speed of the cars just after the collision is 0.875 m/s.

What is the calculated ?

The calculated answer will depend on the context of the question. Without more information it is not possible to provide a definitive answer.

The calculated answer is not possible to provide without knowing the question.

The calculated answer is not possible to determine without more information. Depending on the question and the associated data, the answer could vary.

This can be calculated using the conservation of momentum: Momentum before collision

Momentum after collision(14,000 kg x 1.50 m/s) + (10,000 kg x 0 m/s) = (24,000 kg x v),21,000 kg m/s = 24,000 kg x v,v = 21,000 kg m/s / 24,000 kg

= 0.875 m/s

To learn more about calculated

https://brainly.com/question/30120309

#SPJ4

The resistance of a parallel circuit with resistances of 2 ohms, 4 ohms, 6 ohms, and 10 ohms is 1.75 ohms

The total resistance is calculated differently in a parallel circuit than in a series circuit. The formula to calculate the total resistance of a parallel circuit is:

1/Rt = 1/R1 + 1/R2 + 1/R3 + ...

Where Rt is the total resistance, and R1, R2, R3, etc. are the resistance values of the individual components in the circuit.

So, in a circuit with resistances of 2 ohms, 4 ohms, 6 ohms, and 10 ohms, the total resistance would be:

1/Rt = 1/2 + 1/4 + 1/6 + 1/10

Solving for Rt:

Rt = 1 / (1/2 + 1/4 + 1/6 + 1/10)

Rt = 1.75 ohms

Therefore, the total resistance of the parallel circuit with resistances of 2 ohms, 4 ohms, 6 ohms, and 10 ohms is 1.75 ohms

Learn more about the resistance of a parallel circuit here: https://brainly.com/question/24195447

#SPJ4