you launch a projectile horizontally from a height of 0.85 m. the projectile travels a horizontal distance 1.8 m. with what speed (m/s) did you launch the projectile?

Answer:

I = 1/2 M R^2          moment of inertia of solid disk

I = 1/2 * 41.0 kg * (.3 m)^2

I = 20.5 kg * .09 m^2 = 1.85 kg-m^2

The maximum output force of the bike wheel is equal to 40000 newtons.

The maximum output force of the bike wheel is calculated by using the equation:

F = R^2 * P, where F is the force exerted by the wheel on the axle, R is the radius of the axle, and P is the applied force. So we have: 800 N = (0.125 m)^2 * (800 N)

Rearranging gives us: 2 * R^2 = 800 N

Solving for R gives us: 0.5 m = 40000 N/m^2

This means that we must have a radius of 0.5 meters to produce an output force of 40000 newtons.

To learn more about force visit: https://brainly.com/question/13191643

#SPJ4

Answer:

In a unit government, all the powers of government are moved around in the central government where in turn in a federal government, the powers of government are divided between the center and the units.

Explanation:

I hope this helps.

The correct statements which describes current theories about dark energy and dark matter among the choices above are given below:

The answers are options a, b, and d.

Dark energy refers to that energy which acts against gravity, thereby resulting in the expansion of the universe. It's major constituent is current characterized with vacuum fluctuation. It is on this premise that dark energy was theorized to be causing the expansion of the universe to accelerate and itself including dark matter is filled in empty space.

So therefore, from the simple note above, it can be deduced that this type of energy does not produce electromagnetic radiation.

Read more on dark matter and energy:

https://brainly.com/question/1495173

#SPJ1

Answer:

a b d

Explanation:

Which statements explain current theories about dark energy and dark matter? Check all that apply.

Space that appears empty actually contains dark energy and dark matter.

Dark matter does not emit electromagnetic radiation.

Scientists believe dark energy will cause the universe to collapse inward to a single point.

Scientists theorize that dark energy is causing the expansion of the universe to accelerate.

Dark matter includes all of the dust, ice, and debris that scientists observe in black holes.

We can determine the direction of the magnetic field of the current-carrying wire in the vicinity of the loop using the right-hand rule.

The right-hand rule is a common mnemonic in physics for remembering the direction of magnetic forces. A similar form of the right-hand rule, which is also called the right-hand grip rule, is used to find the direction of the magnetic field in a current-carrying wire.

The direction of the magnetic field made by a current in a wire curls around the wire in a ring. You can find the direction by curling your fingers and pointing your right thumb in the direction of the current in the wire. Your fingers will be curled in the same direction as the direction of the magnetic field around the current-carrying wire.

Learn more about the right-hand rule here: https://brainly.com/question/14434299

#SPJ4

Height above which the spring's equilibrium point can the gun fire the mass if the gun is fired straight up is 0.34m.

The law of conservation of energy is that energy can neither be created nor destroyed. Energy changes from one form of to another form.

Using the law of conservation of energy.

Em₀ = 1.5 J

Higher.

Em1 = U

= m g h

As there is no friction, then the mechanical energy is conserved

Hence, Em₀ = Em1

Em₀ = m g h

therefore, h = Em₀ / m g

h = 1.5 / 0.45 * 9.8

Hence, h = 0.34 m

To know more about law of conservation of energy, refer

https://brainly.com/question/166559

#SPJ4

Answer:

answer a

Explanation:

while any machine is working, there are some forces (f.e. friction) that are still calculating.

Good luck

The increase in energy is 100times.

The square of the distance from the source of the sound wave determines the inverse proportionality of sound intensity. The strength of a sound wave reduces with increasing distance from the source because sound waves transmit their energy via a two-dimensional or three-dimensional medium.

A sound wave's amplitude determines its intensity, and its frequency corresponds to its rate of vibration.

Acoustic intensity, also referred to as sound intensity, is the amount of energy carried by sound waves per unit of area in a direction perpendicular to that area. The SI unit for intensity, which also includes sound intensity, is the watt per square meter (W/m²).

Mathematically, the sound intensity level can be expressed as,

β(dB) = 10log₁₀(I/I₀)

β₂-β₁ =  10log₁₀(I/I₀)

30-10 = 10log₁₀(I/I₀)

20 = 10log₁₀(I/I₀)

I/I₀ = 10²(or) 100times.

To know more intensity of sound visit:

https://brainly.com/question/14477251

#SPJ4

Answer:

See below

Explanation:

1800 j/(kg C)   =     x J  / (.20 kg * 50 C)

solve for x J = 180 000 J  

The amount of energy needed to raise the temperature of 0.20 kg of cooking oil by 50°C is 18000 J.

The amount of energy (Q) needed to raise the temperature of a substance can be calculated using the formula:

Q = mcΔT

where Q is the amount of energy, m is the mass of the substance, c is the specific heat capacity of the substance, and ΔT is the change in temperature.

In this case, the mass of the cooking oil is 0.20 kg, the specific heat capacity of the oil is 1800 J/(kg·°C), and the temperature needs to be raised by 50°C. Substituting these values into the formula, we get:

[tex]Q = (0.20 kg) x (1800 J/(kg·°C)) x (50°C)[/tex]

Q = 18000 J

Therefore, the amount of energy needed to raise the temperature of 0.20 kg of cooking oil by 50°C is 18000 J.

Learn more about energy, here:

https://brainly.com/question/1932868

#SPJ2

Therefore, U equal to cV T represents the change in internal energy for an ideal gas, where cV stands for specific heat (at constant volume) and T for change in temperature.

Increase in temperature is 0.0176 degree Celsius. b. the remaining energy will be lost.

The mass of copper block = 1.8kg

Initial speed = 3.1 m/s

Specific heat of copper = 0.385 j/g degree Celcius.

a. The increase in temperature is calculated below:

Change i kenetic energy = 1/2mv²

= 1/2 *1.8*4²= 14.4J

85% of energy is converted into internal energy.

mc =14.4*0.85

1.8*385 = 14.4*0.85

12.24/693

=0.0176

The remaining  15 per cent of kinetic energy will be lost and it will be changed into other forms.

To learn more about internal energy refer

https://brainly.com/question/17078222

#SPJ4

Power tools must be used since all interior walls are reinforced is a consideration when forcing interior walls.

The correct option is  C.

The load of the floor or roof construction above them is supported by load-bearing walls, also referred to as "bearing walls." They are made to transfer weight from the roof to the foundation by passing through the flooring. A bearing wall, also known as a load-bearing barrier or a structural wall, supports the entire weight of the home. This wall assists in distributing the weight of the building from the roof to the base, and its loss could lead to the building collapsing.

Tom proposes going up to the attic or basement to check which direction the joists run to see if a wall is load-bearing. The wall is still most likely not load-bearing if it runs parallel to the joists.

To know more about Load-bearing visit:

https://brainly.com/question/11158855

#SPJ13

The complete question is -

What is a consideration when forcing interior walls?

A-The wall coverings often hide interior metal framing.

B-The walls may be load-bearing and affect structural integrity.

C-Power tools must be used since all interior walls are reinforced.

D-Forcing the wall will require firefighters to work in a team of two.

The angular speed of the skaters is 0.7rad/s  and the kinetic energy of the two-skater system is 98 J.

Kinetic energy = m[tex]v^{2}[/tex] = 98J

Angular speed = 0.7 rad/s

A force needs to be applied if we want to accelerate an object. We must use effort to apply a force. The object will be moving at a new constant speed once the operation is finished and energy has been transferred to it. Kinetic energy, which is the energy that is transferred and is based on the mass and speed attained, is what causes motion.

It is possible for kinetic energy to move from one item to another and change into other types of energy. An encounter between a flying squirrel and a chipmunk, for instance, might occur. Some of the squirrel's initial kinetic energy may have been passed to the chipmunk after the collision, or it may have been converted to another kind of energy.

Learn more about kinetic energy here:

https://brainly.com/question/999862

#SPJ4

the speed of the projectile is 780m/s.

given in this question,

mass of the gun m₁ =1500metric tun

as we know 1ton= 1000kg

so m₁=1,500,000kg

mass of projectile m₂= 5ton =5000kg

for solving this problem we will use the concept of conservation of momentum.

which is [tex]P_{initial}[/tex]=[tex]P_{final}[/tex]

[tex]P_{initial}[/tex]=0

and [tex]P_{final}[/tex]=m₁v₁+m₂v₂

∵v₁=2.6m/s

now by the conservation of momentum

[tex]P_{i}[/tex]=[tex]P_{f}[/tex]

0=1,500,000×2.6+5000×v₂

v₂=-1500000×2.6/5000

v₂= -780m/s

hence the value of the velocity negative is not possible

negative sign is showing direction of projectile.

Learn more about momentum here:
https://brainly.com/question/2193212

#SPJ4

The wheel's average net torque over the course of interval T is  Iωf/T (option-D).

An object's rotational velocity is altered by net torque. The velocity of an object is affected by net force. When pushed, the block moves horizontally and, assuming low friction, does not rotate.

Given ,

The wheel's initial angular speed, [tex]w_{i}[/tex] = 0

Final wheel angular velocity, [tex]w_{f}[/tex] = [tex]w_{f}[/tex]

The amount of time required to increase the wheel's angular speed t = T

The wheel's angular acceleration,

α = [tex]w_{f}[/tex] - [tex]w_{i}[/tex]/T

α = [tex]w_{f}[/tex] - 0/T

α = [tex]w_{f}[/tex]/T

Newton's Second Law of Rotation states:

The moment of inertia times the angular acceleration are equal when multiple torques are acting on a rigid body about a fixed axis.

τ = Iα

An expression for angular acceleration is:

α = (ωf - ωi) / T

α = ωf/T

As an alternative to the second law:

τ = Iωf/T.

To know more about torque visit:

https://brainly.com/question/3103394

#SPJ1

She has probably lost some of her range of motion.So Full Range of Motion should she expect in her first yoga class back after such a long break.

Due to the distinctive design of our skeletal system, the range of motion is defined as the way our bodies move through space. especially how the bones adhere to one another at the joints. Because of each person's unique skeletal structure, every joint in the body has a defined range of motion. A joint's range of motion (ROM) refers to how far it can move actively or passively in a given direction. As opposed to passive ROM, which occurs when an external force moves the joint, active ROM occurs when muscles do so. There are active and passive joints (hip, knee, shoulder) and regions of the spine (neck). Performing yin yoga helps to dissolve adhesions in these tissues, restoring their ability to move freely. Vinyasa yoga extends your range of motion as well.

Learn more about range of motion here:

https://brainly.com/question/16231656

#SPJ4

The equivalent resistance of the circuit is 14.28 ohms.

Resistance- 25 ohms and 30 ohms in parallel

so, the equivalent resistance

1/R =1/R1+1/R2

1/R =1/25+1/30

1/R =0.07

R =  14.28 ohms

If two or more components are connected in parallel, they have the same difference of potential (voltage) across their ends. The potential differences across the components are the same in magnitude, and they also have identical polarities. The same voltage is applied to all circuit components connected in parallel. The total current is the sum of the currents through the individual components, in accordance with Kirchhoff's current law.

A parallel circuit's total resistance is always lower than any of its branch resistances. The total resistance in the circuit decreases when more parallel resistances are added to the lines.

know more about parallel circuits at:

https://brainly.com/question/12069231

#SPJ4

When the iron skillet cools from 178°C to 21°C, the quantity of heat lost is given by.

ΔQ = SmΔT = (0.449 J/°Cg) (1280 g)Δ(21 °C - 178 °C)

= -90231.04 J = -90.231 kJ

The specific heat capacity of a substance is equal to the heat capacity of a specimen of the element divided by the mass of sample.

Also known as specific heat, this is the quantity of energy required to increase a substance's temperature by one degree Celsius in one gram. The units of specific heat are typically calories or joules per gram per degree Celsius. As an illustration, the specific heat of water is 1 calorie (4.186 joules) per gram per degree Celsius.

Between systems or objects with various temperatures, energy is transmitted in the form of heat (flowing from the high-temperature system to the low-temperature system). Likewise called thermal energy or heat energy. The usual units for measuring heat are Btu, calories, or joules.

To know more about specific heat capacity, click on the link below:

https://brainly.com/question/27991746

#SPJ4

The total upward, vertical force on the liquid due to its surface tension as the ring is pulled upward is 2π (r inner + router ) × r cos θ.

Surface tension is the tendency of liquid surfaces at relaxation to shrink into the minimal surface area viable. floor anxiety is what permits gadgets with a better density than water consisting of razor blades and bugs to go with the flow on a water surface without turning even partly submerged.

Surface tension arises because of cohesive interactions between the molecules within the liquid. At the bulk of the liquid, the molecules have neighboring molecules on each facet. Molecules are pulling each other equally in all directions inflicting an internet force of zero.

Calculation:-

Upward force = length of contact × r cos θ

                       = 2π (r inner + router ) × r cos θ

Learn more about surface tension here:-https://brainly.com/question/138724

#SPJ4

The circuit shown has the drawback that it can only operate with alternating current.

The correct answer is D

A type of electrical current known as alternating current (AC) alternates the flow of electrons periodically or in cycles between two directions. Alternating current (AC) is the kind of current that circulates through electrical outlets used in everyday homes and power lines.

Both alternating current (AC) and direct current (DC) are types of electric current (DC). The way that electrons move determines how AC and DC are different from one another. While the flow of electrons in AC is constantly changing, moving first ahead and then backward, as opposed to DC's steady movement in one direction

To know more about alternating current visit:

https://brainly.com/question/11673552

#SPJ13

Car A's frequency is determined to be 398.4 Hz.

The frequency heard by car A is calculated using the following equation.

f = fs(v - v₀) / (v - vs)

where;

v is the speed of sound = 343 m/s

v₀ is the speed car B = 19.2 m/s

vs is the speed of car A = 22 m/s

fs is the frequency of car A = 395 Hz

f is the frequency of car B = ?

f = 395(343 - 19.2) / (343 - 22)

The frequency will be calculated as below,

f = 395(1.0087)

f = 398.4 Hz

Therefore, car A's frequency is determined to be 398.4 Hz.

Learn more about frequency here:

brainly.com/question/10728818

#SPJ1

Light passes straight through two vertical polarizers. The axes of the filters are aligned parallel to each other. The way the light that passes through the second filter compared to the light that passed through the first filter is that all of the light will pass through both polarizers.

A polarizer, also known as a polariser, is an optical filter that allows light waves of one polarization to pass while blocking light waves of other polarizations. It may convert an undefined or mixed polarization light beam into a polarized light beam by filtering it.

Calcite, a naturally occurring mineral, is used to make the majority of birefringent polarizers. Calcite is common in polycrystalline form, but optical-grade calcite is scarce, making birefringent polarizers more expensive than most other varieties.

Remember that polarising filters can lower the amount of light reaching your camera's sensor by up to two or three f-stops, so avoid using them in low-light settings.  This includes photography during blue hour, at night, and when capturing the Aurora Borealis.

Learn more about light polarizers:
https://brainly.com/question/29217577
#SPJ1

Thousands of small rocky objects known as asteroids can be found in the solar system between Mars and Jupiter.

The Solar System is composed of the Sun and the objects that orbit it. It was created by the gravitational collapse of a massive interstellar molecular cloud 4.6 billion years ago. The Sun contains the vast majority of the system's mass, with Jupiter holding the majority of the remaining mass.

Asteroids are rocky bodies that orbit the Sun. Although asteroids orbit the Sun in the same way that planets do, they are much smaller. In our solar system, there are numerous asteroids. The majority of them are found in the main asteroid belt, which lies between the orbits of Mars and Jupiter.

To know more about solar system, visit:

https://brainly.com/question/12075871

#SPJ4

The force constant k of the spring is 781000 N/m

What is force?

Once applied, force is described as an external cause that alters or tends to modify the state of the body; if the body is in motion, it comes to rest, and if at rest, it comes to motion. It can also induce a shift in the body's direction, shape, or size. Pushing or pulling a door with force is an example.

Because force is a vector quantity, it has both magnitude and direction. Newton's second law defines force as the "product of a body's mass and acceleration."

In physics, a force is an effect that can change the velocity of an object. A force can cause a mass object's velocity to change (e.g., moving from rest), causing it to accelerate. Force can be thought of as either a push or a pull. Because it has both magnitude and direction, force is a vector quantity. It is measured in newtons, the SI mass unit (N). The letter F stands for force (formerly P).

In its original form, Newton's second law states that the net force acting on an object is equal to the rate at which its momentum varies with time.

Here,

let the force constant is k

Using conservation of energy

0.50 * 5 *10^5 * 0.50^2 = 0.50 * k * 0.40^2

solving for k

k = 781000 N/m

The force constant k of the spring is 781000 N/m

Learn more about force from given link

https://brainly.com/question/388851

#SPJ4

The kinetic energy of an object increases as it falls freely.

Potential energy is transformed into kinetic energy when an object falls freely, and kinetic energy is transformed into heat and sound energy upon impact with the ground.

Following completion of the work, energy is transferred to the object, which further moves at a new, constant speed. The sort of energy that is transferred, kinetic energy, is based on the mass and speed obtained. Kinetic energy is a form of energy that can be transformed into other forms of energy and moved between objects.

When something falls, gravity is the cause of the fall. That object experiences a force, which causes it to accelerate, increasing its fall velocity. Gravitational force—the force the Earth exerts on objects—is a type of acceleration. Everything feels the exact same amount of pull from Earth.

Follow the link below to learn more about kinetic energy:

https://brainly.com/question/23883007

#SPJ4

Kinetic energy, which can be seen in the movement of an object, particle, or group of particles, is the energy of motion.

energy KE = units

mass m =  15

velocity v =  30

KE = 6750 J

To Learn more About Kinetic energy refer to :

https://brainly.com/question/25959744

#SPJ4

Since the toy car is halting, the acceleration is -36 m/s2, which equals the toy's deceleration.

A moving object can occasionally alter its velocity by the same amount every second. The data table above depicts an item altering its velocity by 10 m/s every second, as was described in the paragraph above. Since the velocity is changing by a fixed amount every second, this is known as a constant acceleration.

The object's force is calculated by multiplying its mass by the speed at which it is traveling. The product is the vector. Kg-m/s2 or Newton is the SI symbol for force (N). The force's equation is as follows:

F = ma

where,

Force is F

m is mass

a is acceleration

The specified values for force are f = 9.0N and m = 0.25kg.

∴ F = ma

9.0 = 0.25 × a

a = 36 m/s²

Therefore, the magnitude is -36m/s2 and the negative sign denotes the toy car's deceleration.

To know more about acceleration, visit:

https://brainly.com/question/2303856

#SPJ4

The magnetic force between the two parallel wires is 2.24 x 10⁻³ N/m.

The magnetic force between the two parallel wires is calculated by applying the following kinematic equation as shown below.

F/L = μI₁I₂/2πr

where;

The magnitude of the magnetic force per meter (in n/m) exerted on each wire is calculated as;

the current in the first wire = the current in the second wire = 74 A

Substitute the given parameters and solve for the force per unit length of current between the two parallel wires.

F/L = ( 4π x 10⁻⁷ x 74 x 74)/(2π x 0.49)

F/L = 2.24 x 10⁻³ N/m

Learn more about magnetic force here: https://brainly.com/question/13277365

#SPJ1

The two measurements, which are needed in order to calculate the speed of an object in motion, be: amount of distance travelled at a particular time interval and the time interval.

Speed is characterised as the rate at which an object's position changes in any direction.

The distance travelled in relation to the time it took to travel that distance is how speed is defined. Since speed simply has a direction and no magnitude, it is a scalar quantity. SI unit of speed be meter/second.

The equation provides the speed formula: s = d/t

Where,

the speed in m.s^-1 is s.

The distance in m is represented by d.

The time interval in s is t.

Learn more about speed here:

https://brainly.com/question/28224010

#SPJ1

The Hamiltonian of massless rod which has a point paricle at one of its ends, is Acos(ω0 t) + Bsin(ω0 t).

The Hamiltonian of a system in quantum mechanics is an operator that corresponds to the system's total energy, which includes both kinetic energy and potential energy.

It may be demonstrated that H = T + V, where T is the kinetic energy and V is the potential energy of the system—i.e., the Hamiltonian is equal to the total energy of the system—if the constraints in the issue do not depend explicitly on time.

Choose a coordinate system such that kˆ is pointing upwards

then the angular acceleration is given by

α = d^2 *θ /dt^2 * k

The torque about the center of mass is given in the statement of the problem as a restoring torque, therefore

τcm = −bθ kˆ .

The z-component of the rotational equation of motion is

−bθ = Icm * d^2 *θ / dt^2 .

This is a simple harmonic oscillator equation with solution is

θ(t) = Acos(ω0 t) + Bsin(ω0 t)

To learn more about Hamiltonian refer :

https://brainly.com/question/14946452

#SPJ4

Answer:

The SI unit for the electric for is

A) Coulomb