a 500-w device is connected to a 120-v ac power source. what is the peak voltage across this device? a) 4.2 v b) 5.9 v c) 120 v d) 150 a e) 170 v

Answer:

Explanation:

Given:

M = 1 260 kg

V₀ = 26.9 m/s

V = 0 m/s

Δt = 9.36 s

___________

L - ?

1)

Vehicle acceleration:

a = (V - V₀) / Δt )  = (0 - 26.9) / 9.36  ≈ - 2.87 m/s²

2)

Braking distance of the car:

L = (V² - V₀²) / (2·a)

L = ( 0² - 26.9²) / (2·(-2.87)) ≈ 121 m

Peak thermal radiation for the human body at 310 K has a wavelength of 9.3 mm.

The average body temperature is 310.15 oK. The infrared region is where the radiation peaks as a result. Red light with wavelengths as long as 7,000 Angstroms can be seen by the human eye. Generally speaking, infrared wavelengths are those between 7,000 and 1,000,000 Angstroms.

Light's wavelength is used to measure it (in nanometers). It is typically represented by the Greek letter. Visible light is typically defined as having a wavelength between 400 and 700 nanometers (nm), or one billionth of a meter.

The distance between equivalent places in two consecutive light cycles is known as the wavelength of light, and the frequency of light is the number of light cycles that pass a specific spot in a second.

Atoms or molecules that undergo discrete energy level transitions give rise to narrowband radiation.

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(a) The acceleration (in m/s²) of the two blocks is 4.42 m/s².

(b) The tension (in N) in the string connecting the blocks is 63.65 N.

The acceleration of the blocks is determined by applying Newton's second law of motion as shown below.

F(net) = ma

where;

F = m₁a + m₂a

F = a(m₁ + m₂)

a = F/(m₁ + m₂)

where;

a = (153) / (14.4 + 20.2)

a = 4.42 m/s²

The tension (in N) in the string connecting the blocks is calculated as follows;

T = m₁a

T = 14.4 x 4.42

T = 63.65 N

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The force would have to work on the block till a distance of 15.66m farther to have 56 joules of kinetic energy.

The work done is given by the product of the force applied and the distance covered along the direction of force.

So we can write,

W = F.s

Where w is the work done if is the force and S is the distance covered.

According to work energy theorem, the work done is equal to the change in kinetic energy.

The force applied in this case is 3 Newton and the body has no till a distance of 3m. Let us assume that the block is moved till a distance x in order to achieve a kinetic energy of 56 joules.

So, it can be written,

3(3+x) = 56

Solving,

9+3x = 56

3x = 47

x = 15.66 m.

So, it is required to move the body by a distance of 15.66 m.

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The answer is T = 2π/ω

Further complete solution is in png format.

Answer:  gravity

Explanation:

Friction requires 2 surfaces in contact with each other.  Gravity is a non-contact, universal force.

Option B. Can be charged to full capacity by using a special dealer-only high-voltage charger.

Voltage is the strain from an electrical circuit's energy source that pushes charged electrons (modern-day) through and engages in the loop, allowing them to do paintings inclusive of illuminating light. In quick, voltage = strain, and it's far measured in volts (V).

Voltage, also called an electric-powered strain, electric-powered anxiety, or ability distinction is the difference in electric-powered capacity between two factors. In a static electric field, it corresponds to the work needed in step with a unit of charge to move a take a look at the rate among the 2 points.

Voltage, also called electromotive force, is absolutely electricity consistent with unit fee. In different phrases, voltage is the difference in electric-powered capacity among factors. contemporary is just the rate of drift of electrical fee.

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Disclaimer:- your question is incomplete, please see below for the complete question.

how many high-voltage cables supply electrical power to the hv components at the front of the vehicle?

A. Using the ICE to turn the motor/generator to fully charge the HV battery

B. Can be charged to full capacity by using a special dealer-only high-voltage charger

C. Operating the ICE at idle after returning from a trip

Answer:Physical

Explanation:

Answer:

physical change

Explanation:

Making a fruit salad, with raw fruits is considered as physical change because in this process chemical composition of fruits is not changed. It is simply changing the shape of the substance.

The  thing that affects the amount of potential energy stored in the magnetic field when a magnet is moved against a magnetic force is by the strength of the magnet as well as the distance that another magnet or magnetic object is said to be from it.

Potential energy between two magnets will depend on their orientation as well as their proximity to one another and their distance from one another. If the opposing poles are kept apart, the potential energy will increase with increasing distance and decrease with increasing proximity.

More energy is transferred to the magnetic field when an object is moved against a stronger magnetic force. Near magnets, magnetic forces are stronger.

Therefore, The power of the magnet and the separation from other magnets or magnetic objects have an impact on how much potential energy is held in the magnetic field.

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Out of all the planets, Jupiter has the most mass. Of all the planets, Jupiter has the strongest magnetic field. Of all the planets, Jupiter rotates the most quickly.

With a rotational velocity of 28,273 miles per hour (or 43,000 kilometers per hour), Jupiter's equator rotates a little more quickly than its polar regions. Jupiter's day ranges from 9 hours, 56 minutes near the poles to 9 hours, 50 minutes towards the equator. As the largest planet, Jupiter has the gravitational ability to draw in the most mass as it travels through space, making it the planet with the quickest rotation. Jupiter acquires the angular momentum of whatever mass it comes into contact with, including gas, dust, and rock, in addition to the mass itself. One rotation of Jupiter, for instance, takes 9 hours and 55 minutes, although it rotates at a speed that is 27 times quicker than Earth's at its equator.

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An elevated feature near the heel or flanks or a position upwind of the fire affords a good sight line and there is advantage of it as long as there is zero possibility that the fire will go there, which is true statement.

Elevated feature helps to protect the space besides there is a fire present. Elevated feature is the safest and nearest place to not get effected by the fire present in the other side of the elevated feature.

This feature is also created in case of emergency situations to immediately reduce the effect of the fire. This could a technique to reduce the effect of the hazards in the disaster management.

While considering the effect of hazards reduction, there are parameters on which these depends, are shape of elevated feature, elevation of the elevated feature and steepness of the elevated feature.

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The sun's intensity for an outer planet located at a distance 6r from the sun is 5.55 W/m². The result is obtained by using the inverse square law formula.

The Inverse Square Law formula describes the intensity of light is inversely proportional to the square of the distance. It can be expressed as

[tex]\frac{I_{1} }{I_{2} } = \frac{d_{2}^{2} }{d_{1}^{2}}[/tex]

Where

Given the case the sun's intensity is 200 W/m² for an inner planet at the distance r. If an outer planet is at a distance 6r, what is the sun's intensity?

By using the inverse square law formula, the sun's intensity for an outer planet is

[tex]\frac{I_{1} }{I_{2} } = \frac{d_{2}^{2} }{d_{1}^{2}}[/tex]

[tex]\frac{200 }{I_{2} } = \frac{(6r)^{2} }{r^{2}}[/tex]

[tex]\frac{200 }{I_{2} } = \frac{36r^{2} }{r^{2}}[/tex]

[tex]I_{2} = \frac{200} {36}[/tex]

I₂ = 5.55 W/m²

Hence, the sun's intensity for a planet at a distance 6r from the sun is 5.55 W/m².

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An object I aid to be positively charged if it has a number of electrons i greater than the number of protons. TRUE

If an object has extra protons than electrons, then the internet fee on the item is fantastic. If there are extra electrons than protons, then the net charge at the item is bad. If there are equal numbers of protons and electrons, then the object is electrically impartial.

An electrical price is created while electrons are transferred to or removed from an object. because electrons have a bad charge, while they are added to an item, it turns negatively charged. when electrons are removed from an object, it will become undoubtedly charged.

A positively charged object has misplaced electrons. A definitely charged object has won protons. A negatively charged item has lost protons. If the variety of electrons is greater than the range of protons, the particle is a negative ion, also referred to as an anion.

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An object I aid to be positively charged if it has a number of electrons i greater than the number of a proton. TRUE/FALSE

Answer:

Tendon

Explanation:

Tendons are a type of connective tissue that attach muscle to bone. Hope this helps! :)

To find the collision rate, known the magnitude.

What is magnitude?

Magnitude typically refers to size or distance. By comparing the size and motion speed of the thing, we can relate magnitude to movement. The object's or quantity's size determines its magnitude.

What is mean by collision rate?

The frequency of collisions between a single particle of radius m and particles with masses ranging from (m1, m1 + m1) to (m, m1) is proportional to their concentration, n(m1) m1, where (m, m1) is the rate constant for collisions between the two particles of masses m and m1 and depends on the process. 

u=140kmph

t=7.oms

v=0

E=M(V-U)/t

⇒m(0-140)/0.007×5/18m/s

⇒5555.55 (m) N

E=(5555.55) (mass) N

Therefore, the collision lasts is 5555.55(m) N.

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To known about all the answers, we first known about the photon and wavelength concept.

What is a photon?

A tiny energy packet of electromagnetic radiation is called a photon, referred to as a light quantum. Albert Einstein proposed the existence of discrete energy packets during the transmission of light in his 1905 description of the photoelectric effect, which gave rise to the photon concept.

What is wavelength?

A waveform signal's wavelength is the separation between two identical points (adjacent crests) in adjacent cycles as the signal travels through space or along a wire. This length in wireless systems is typically specified in meters (m), centimeters (cm), or millimeters (mm).

a)  Distance between the earth and the sun is

   1.5*10^N

Speed of photon = 3*10^8m|s

Time= distance/speed

   = 1.5*10^11m/3*10^8m|s

   = 0.5*10^3 second

   = 500 sec

  = 8.3 minutes.

b) energy of the photon is given by

E=hc/⋋

h= planks constant – 4.14* 10^15 eVs

c= Speed of light- 3*10^8 m/s

⋋= 558 nm= 558* 10^9 m

E= 4.14* 10^15 eVs* 3*10^8 m/s /558* 10^9 m

E= 2.23 eV

c) Wavelength color

495–570 nm for green. 570–590 nm for yellow. Orange (590–620 nm). Red: 620-750 nm

d) Let the wavelength be ⋋

We know E=hc/⋋

1 eV= 4.14*10^-15 eVs* 3*10^8m/s/⋋

⋋ = 12.42*10^-7m

⋋ = 1242 nm.

Therefore, Distance between the earth and the sun is 8.3 minutes. Energy of the photon is given by 2.23 eV. Wavelength color is green or yellow. The wavelength be ⋋ is 1242 nm.

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The initial velocity of the ball thrown vertically into the air reaching a maximum height is 20 m/s.

Velocity can be defined as the ratio of displacement to time.

To calculate the initial velocity of the ball, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, the initial velocity of the ball is 20 m/s.

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the final velocity of the car (in m/s) after the collision is 6.25 m/s

12.5 m/s is moving in the initial direction of the car

1. A car of mass 1500 kg moving at a speed of 25.0 m/s collides with a truck of mass 4500 kg at rest. the bumpers of both vehicles lock on impact.

A. Compare the force exerted by the car on the truck with the force exerted by the truck on the car during the collision. Is one force greater than the other, or are they equal in magnitude?

the force exerted by the car on the truck and the force exerted by the truck in the collision.

creates a pair of actions and reactions

are equal in magnitude and opposite in direction according to Newton's third law

b. What is the final speed of the car and the truck just after the collision? show your calculations.

v=m1u1+m2u2/m1+m2=1500*25+0/1500+4500=6.25 m/s

2. the same collision as in the above question occurs, but this time the car and truck bounce off each other completely elastically.

C. Compare the force exerted by the car on the truck with the force exerted by the truck on the car in the collision. is one force greater than the other or are they equal?

the force exerted by the car on the truck and the force exerted by the truck in the collision.

creates a pair of actions and reactions

are equal in magnitude and opposite in direction according to Newton's third law

d. what is the final speed of the car and truck just after the collision?

view the calculation

v1=[m1-m2/m1+m2]u1+[2m2/m1+m2]u2=[1500-4500/6000]*25+[9000/6000]*0=-12.5 m/s

a negative sign means the car is moving backwards at 12.5 m/s

v2=[m2-m1/m1+m2]u2+[2m1/m1+m2]u1=[4500-1500/6000]*0+[3000/6000]25=12.5 m/s

moves in the original direction of the car

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1)

Circular Motion

2)

No; the direction changes.

3)

Velocity. Gravitational Pull. Force/Twist. Acceleration.

4)

The weight of the object, gravity pulling on it. The kinetic energy produced by you which caused acceleration in a certain vector direction. Location of the object.

The given images are labelled as either element, compound, mixture of elements or mixture of compounds accordingly.

The answers are marked according in order of the images as follows:

If there are only single type of atoms present without being in contact with another atom, it is called as elements. If one atom is in contact with another atoms it is a compound. If there are more than one type of element, it is a mixture of elements. If there are more than one type of compound, it is a mixture of compounds.

Therefore, the given images are labelled as either element, compound, mixture of elements or mixture of compounds accordingly.

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The acceleration is -0.48m/s².

Acceleration is the rate of change in both speed and direction of velocity over time. Anything is said to have been accelerated when it goes faster or slower in a straight line.

Suppose that θ=35°

First, you need to set up equations for both blocks.

Let m₁ be 10kg and m₂ be 5kg and for our computations suppose right is positive and up is positive

For m₁ the solution is:

Sigma Fx = ma

T - m₁gsin35 = m₁a

where T = tension

For m₂

m₂g - T = m₂a

Add the two equations together

m₁a + m₂a = T-m₁gsin35 + m₂g - T

a(m₁ + m₂) = m₂g - m₁gsin35

a= (5×9.8 - 10×9.8×sin35)/(10 + 5)

a= -0.48m/s².

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Velocity of the arrow while leaving the bow is 33.54 m/s.

Kinetic energy is the energy that an object has when it is in motion. If you want to accelerate an object you have to apply a force. To add strength, we need our work. When the work is done, the energy is transferred to the object and it moves at a new constant speed.

Energy stored in the string = Kinetic energy of the arrow.

1/2(ke²) = 1/2(mv²)

Where k = spring constant of the bowstring

e = extension

m = mass of the arrow

v = velocity of the arrow.

Let's make v the subject of this equation

v = √(ke²/m)

Given: k = 1250 N/m

e = 30 cm or 0.3 m

m = 100 g or 0.1 kg

Substitute the values into the equation:

v = √(1250×0.30²/0.1)

v = √(1125)

v = 33.54 m/s

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The bus'scity speed is 77.4km/hr.

What constitutes speed? the speed of a change in an object's position in any direction.

Speed is the rate of change in location of an item, expressed in meters per second. If something starts at the origin and goes three meters in three seconds, for instance, its speed is one meter per second. Like distance divided by time, the equation for speed is straightforward.

A change in an object's position over time is referred to as motion in physics. Displacement, distance, velocity, acceleration, time, and speed all play a role in how motion is defined. Speed is a scalar variable that describes how quickly an object travels through space with regard to time.

speed = distance/time

speed =387/5

speed =77.4km/hr.

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The thermal energy of the box which is pulled with a force of 250 N to a distance of 10 meters is 2500 J

The force to pull the box = 250 N

The box is moved to a distance of 10 meters

The thermal energy can be found using the formula,

                    W = F x d

where W is the thermal energy

           F is the Force

           d is the distance moved

Let us substitute the known values in the above equation, we get

                      W = 250 x 10

                          = 2500 J

Therefore, the thermal energy of the box is 2500 J

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The potential difference measured if the given voltmeter is used and connected to the circuit via the 3V terminal is 1.4 V.

The reading of voltmeter is taken for the row with 0, 1, 2 and 3 values. Each  line indicates 0.1 volts. The distance between each smaller lines indicates 0.2 volts and the distance between each longer lines indicates 0.2 volts.

A voltmeter is a device used to measure the potential difference between two points in a circuit. Potential difference is also called as voltage. Its unit is volts.

V = IR

V = Voltage

I = Current

R = Resistance

Therefore, the potential difference measured is 1.4 V

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The work done by gravitational force and tension in the cable is wg > 0 and wt <0. option 2 is correct.

The work done by the force is given as :

W = Fdcosθ

where

F= force

d = displacement

θ = angle between directions of F and d

when force and displacement are parallel then :

θ = 0

cosθ = ±1

so work done is positive

when force and displacement are anti-parallel then :

θ = 180°

cosθ = -1

so work done is negative.

then crane is moving downward. the force is also downward and tension is upward.

The work done by gravitational force and tension in the cable is wg > 0 and wt <0. option 2 is correct.

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Answer:

Explanation:

 Given:

H = 3.6 m

V = 0 m/s

g = 9.8 m/s²

_________

V₀ - ?

Potential energy = m·g·H

Kinetic energy = m·V₀² / 2

Let's equate:

m·V₀² / 2 = m·g·H

V₀² / 2 = g·H

Starting speed:

V₀ = √ ( 2·g·H )

V₀ = √ (2·9.8·3.6) ≈ 8.4 m/s

the submarine's acceleration is 0.95  m/sec²

Total force on submarine   =    14848 -  (1571 * 9.8 + 947)

                                          =   -1494.8  N

=>    submarine's acceleration  =  F/m

                                                 =    1494.8/1571

                                                =  0.95  m/sec²

acceleration is the rate of change in both speed and direction of velocity over time. When something moves faster or slower in a straight line, it is said to have been accelerated. Because the direction is constantly shifting, motion on a circle accelerates even when the speed is constant. Both effects add to the acceleration for all other types of motion.

It is a vector quantity because acceleration has both a magnitude and a direction. Another vector quantity is velocity. The velocity vector change over a given period of time, divided by that period of time, is the definition of acceleration. The upper limit of the ratio of velocity change provides instantaneous acceleration (at a specific time and place).

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In the first step in the proton-proton chain, the positron gets rapidly converted to energy when it meets a standard electron, leading to matter-antimatter annihilation.

The positron is an antiparticle or antimatter counterpart of the electron. It persists an electrical charge of +1e, a spin of 1/2, and a mass identical to the mass of the electron. When a positron collides with an electron, destruction occurs. If this collision is at low energies, it leads to the production of two or more photons. They're created by radioactive decay or by the pairing of two protons at high energies.

The proton-proton chain is a nuclear fusion. The proton-proton fusion is initiated only when the kinetic energy of the proton is high enough to undergo the electrostatic repulsion.

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Explanation:

Major activity injuries include:

Ansver:

All of the above