How is grounding a positive object different from grounding a negative object?

The potential energy will be 180J

By going through the formula of potential energy that is U=mgh

where, U= Potential energy

m= mass

g= gravitational feild

h= height

Now as per the question,

Initial velocity, u = 6 m/s

Final velocity, v = 0 m/s

Acceleration due to gravity, g = -5 m/s²

(The negative sign implies that the object is moving downwards)

To find the value of Height, we need to use the relation,

v^2 - u^2 = 2gh

0 - 36 = -10h

h = 36/10 m

Height = 18/5 m

therefore, Potential Energy(U) = mgh

                                              = 10 × 5 × 18/5 J

                                              = 180 J

Therefore, the ball will have a potential energy of 180 J when it is at its highest point.

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The resultant velocity of the plane relative to the ground will be 70 mi/h a plane can travel with a speed of 80 mi/hr with respect to the air.

a. A headwind would diminish the resultant speed of the plane to 70 mi/hr.

             resultant velocity = 80-10

                                            =70 mi/hr

b. The plane's final speed would rise to 90 miles per hour if there was a tailwind.

                   resultant velocity = 80 + 10

                                                = 90 mi/hr

c. The plane's final speed would rise to 80.6 miles per hour in the event of a crosswind of 10 miles per hour.

                        resultant velocity =√(802+102)

                                                  = 80.62 mi/hr

The Pythagorean theorem can be used to figure this out: √[(80 mi/hr)² + (10 mi/hr)²])

d. A crosswind of 60 mi/hr would raise the plane's final velocity to 100 mi/hr. The Pythagorean theorem can be used to figure : √[ (80 mi/hr)² + (60 mi/hr)² ] )

                     resultant velocity = √(802+602)

                               = 100 mi/hr

The relative velocity refers to how one observer would perceive another moving object within their own frame. The velocity of an object when there are multiple influences on its motion in a fixed reference frame is known as the resultant velocity.

Incomplete question:

A plane can travel with a speed of 80 mi/hr with respect to the air. Determine the resultant velocity of the plane (magnitude only) if it encounters a

a. 10 mi/hr headwind.

b. 10 mi/hr tailwind.

c. 10 mi/hr crosswind.

d. 60 mi/hr crosswind.

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Answer:

doctor,health assistant , dentist, psychotherapist , nurse ,etc

The Image distance and Magnification of The Image ​will be 30 cm and 3.

The focal length of the lens, which is often expressed in millimeters, is the distance between the lens and the image sensor when the subject is in focus.

Given data;

Focal length,f=?

Image distance,v=?

Object distance,u= 10 cm

Magnification,m= 2.85

The focal length is half of the radius;

f=R/2

f=30 Cm/2

f= 15 Cm

The mirror equation is found as;

\(\rm \frac{1}{f} =\frac{1}{v} +\frac{1}{u} \\\\\ \frac{1}{15}=\frac{1}{v}+\frac{1}{10} } \\\\\ v= -30 \ cm\)

The magnification of the lens is found as;

\(\rm m=\frac{30}{10}\\\\ m=3\)

Hence, the image distance and magnification of The image ​will be 30 cm and 3.

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Answer:

Explanation:

Use kinematics equations

You have Vi=10m/s and Vf=50m/s and t=2s

Use equation Vf=Vo+at      50=10+a(2)

50=10+2a

40=2a

a=20 m/s^2

The frequency is solely determined by the spring constant and mass, and is independent of other factors mentioned in the question.

The frequency of oscillation of a mass m hanging on an ideal spring of spring constant k depends on the mass of the object, the spring constant, and the amplitude of oscillation. The initial speed at release and the initial position at release do not affect the frequency of oscillation. The frequency of oscillation is given by the formula f = 1/2π * √(k/m), where f is the frequency, k is the spring constant, and m is the mass of the object. The amplitude of oscillation affects the maximum displacement of the object from its equilibrium position, but it does not affect the frequency of oscillation. Therefore, the correct answers to the question are the mass of the object, the spring constant, and the amplitude of oscillation.
The frequency of oscillation of a mass m hanging on an ideal spring with spring constant k depends on the mass and spring constant only. The initial speed at release, initial position at release, and amplitude of oscillation do not affect the frequency. The formula to calculate the frequency is f = (1/2π) * √(k/m), where f represents the frequency, k is the spring constant, and m is the mass. This equation demonstrates that the frequency is solely determined by the spring constant and mass, and is independent of other factors mentioned in the question.

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Answer:

1.656 × 10^(-21) J

Explanation:

Formula for the average translational kinetic energy per atom is;

K.E = (3/2)kΔt

Where;

k is boltzmann constant = 1.38 × 10^(-23) J/K

ΔT is change in temperature = 373 - 293 = 80 K

Thus;

K.E = (3/2) × 1.38 × 10^(-23) × 80

K.E = 1.656 × 10^(-21) J

#1

True

All metals attract magnets

#2

Yes true

Away from magnetic field if you place something it won't attract that

#3

False

Its only possible in case of electromagnetic force fields .

#4

False

Electromagnetic force field

#5

True

The friction between the b;ock and surface is given by mass and accelerartion.

Force = mass * acceleration

Answer:

temperature inside the balloon so it is warmer than the surrounding air

Explanation:

For the balloon to get an uplift , it should be lighter than air . That means the density of the gas inside should be less than the density of air outside . only then ,  weight of the balloon plus the weight of the air inside balloon  will become less than the weight of displaced air outside . This can be achieved by warming up the air inside. Its temperature must exceed that of outside air.

The option that best explain how the pilot can make the balloon rise is option D. The pilot can increase the temperature inside the balloon so it is warmer than the surrounding air

An object will float in air when the density of the object is lower than the density of the air.

Increase in temperature of a gas decreases the density of the gas.

For the pilot to make the balloon rise, he must find a way to make the balloon more lighter than air. To do this, he has to increase the temperature of the balloon.

In this question, the pilot can increase the temperature inside the balloon so it is warmer than the surrounding air in order for the balloon to quickly rise several feet higher above some trees in distance.

Therefore, option D best explain how the pilot can make the balloon rise.

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Answer:

The warmer the temperature the more kinetic energy.  

Explanation:

The highest temperature

The typical kinetic energy formula is used to comprehend the kinetic energy of a gas. This formula uses the gas's temperature to calculate the kinetic energy, or KE. This is carried out because a gas's kinetic energy is exactly related to its temperature. Thus option D is correct.

Temperature is a gauge for the typical kinetic energy of a substance's constituent particles. It is a particle's typical kinetic energy.

A gas's temperature directly relates to the average kinetic energy of its particles. The particles must travel more quickly as the gas warms since their mass is constant.

The average kinetic energy of the particles in a sample of matter falls as it is continuously cooled. One would anticipate that eventually the particles will stop moving altogether.

Therefore, beaker D: 18 degree Celsius having average kinetic energy of the particles the greatest.

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9514 1404 393

Answer:

  12.  x = 11; sides are 29

  13.  x = 5; sides are 25

Explanation:

12. The marked sides are equal length, so ...

  3x -4 = 2x +7

  x = 11 . . . . . . . . add 4-2x

  2x+7 = 2(11)+7 = 29 . . . side lengths

__

13. The marked sides are equal length, so ...

  6x -5 = 5x

  x = 5 . . . . . . . add 5-5x

  5x = 5(5) = 25 . . . side lengths

Answer:

1, decrease

Explanation:

At higher altitudes, air pressure is lower. When atmospheric pressure is lower, such as at a higher altitude, it takes less energy to bring water to the boiling point. Less energy means less heat, which means water will boil at a lower temperature at a higher altitude.

Answer:

6.0×10⁻²¹ J

Explanation:

KE = 3/2 kT,

where KE is average kinetic energy per molecule,

k is the Boltzmann constant,

and T is absolute temperature.

KE = 3/2 (1.38×10⁻²³ J/K) (18 + 273.15) K

KE = 6.0×10⁻²¹ J

Answer:

The answer is 6.0×10⁻²¹ J , because KE = 3/2 kT,  where KE is average kinetic energy per molecule,  k is the Boltzmann constant,  and T is the absolute temperature.

KE = 3/2 (1.38×10⁻²³ J/K) (18 + 273.15) K

KE = 6.0×10⁻²¹ J

Waves produced by an object that radiates heat are infrared rays and radio waves have the longest wavelength.

The oscillations between an electric field and a magnetic field produce waves known as electromagnetic waves or EM waves. In other words, magnetic and electric fields oscillate to form electromagnetic (EM) waves.

Thus, this is the description of the correct part of the electromagnetic waves.

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Answer:

an open circuit (A battery, bulb, wire,switch)

Explanation:

the battery supplies the power the wire carries the current from the battery to the bulb but the circuit is not completed if the switch is not connected (Switch )

A constant force of 1.25N

Explanation:

This is a kinematics problem.

First find acceleration,

then use F = ma to find force.

Given:

mass = .5kg

delta x = 20m

t = 4s

a = ?

Friction = 0

From the kinematics equations:

delta x = Vi + (1/2)at^2

Plug in terms that are given:

20m = 0 + (1/2)a(4^2)

(2*20m)/(16s^2) = a

40m/(16s^2)= 2.5m/s^2

Now use F = ma to find force exerted on object.

F = (0.5kg)*(2.5m/s^2)

F = 1.25N

we call it as well as 100 . so easey

Answer:

10 squared

Explanation:

10 squared

In Depth:

Let have a square that has a side length of 10.

A square four sides are equal and if we find the area of a squared, our formula is

\( {s}^{2} \)

Our in this instance,

\( {10}^{2} \)

or we call it

\(10 \: \: squared\)

Option C best describes how sound is produced. Vibrating materials generate waves ia the reason sound is produced.

Vibrating items produce noise and induce further vibrations. The vibrations of the tuning fork caused the salt to move.

Vibrations produce sound, which is a sort of energy. When an item vibrates, it causes the molecules in the air around it to move.

These molecules collide with nearby molecules, forcing them to vibrate as well. As a result, they collide with more surrounding air molecules.

Vibrating materials generate waves ia the reason sound is produced.

Hence option C best describes how sound is produced.

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When you change the thickness of the wire in a circuit, option B. the resistance (R) and current (I) will also change, but the voltage (V) will remain constant.

The resistance of a wire is directly proportional to its length and inversely proportional to its cross-sectional area (thickness). As the thickness of the wire changes, the cross-sectional area changes, which in turn affects the resistance. Thicker wires have a larger cross-sectional area, resulting in lower resistance, while thinner wires have a smaller cross-sectional area, resulting in higher resistance. Therefore, changing the thickness of the wire will cause a change in resistance.

According to Ohm's Law (V = IR), the voltage (V) in a circuit is equal to the product of the current (I) and the resistance (R). If the voltage is kept constant, and the resistance changes due to the thickness of the wire, the current will also change to maintain the relationship defined by Ohm's Law. When the resistance increases, the current decreases, and vice versa.

However, it's important to note that changing the thickness of the wire will not directly affect the voltage. The voltage in a circuit is determined by the power source or the potential difference applied across the circuit and is independent of the wire thickness. As long as the voltage source remains constant, the voltage across the circuit will remain constant regardless of the wire thickness. Therefore, the correct answer is option B.

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The answer is no. Hope this helps

Reduction of severity of possible conflicts improvements would we recommend be made if this movement is to accommodate a wb-67 design vehicle.

Reduction of severity of possible conflicts is the basic purpose of design at grade intersection from different streams of traffic and pedestrians and turning vehicles while facilitating smooth traffic flow. when the intersection is designed, the operation characteristics of both the vehicles and pedestrians are considered.

The design of an intersection involves the design the horizontal and vertical alignment of roadways. design of a suitable channeling system, determination of minimum required widths of turning roadways when traffic is expected to make turns at speeds higher than 15m/hr, the assurance that sight  distances are adequate for the type of control at the intersection

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Answer:

Alpha decay forms new element with two fewer protons and two fewer neutrons, Beta decay forms new element with one more proton and one fewer neutron. Gamma decay forms NO new element, but now the element has less energy because energy is released as gamma rays.

Explanation:

ANSWER AND EXPLAINATION:
Gamma decay differs from alpha and beta decay in several ways:

1. Particle emitted: In gamma decay, no particles are emitted. Instead, a high-energy photon called a gamma ray is released. Alpha decay involves the emission of an alpha particle, which consists of two protons and two neutrons. Beta decay involves the emission of either a beta-minus particle (an electron) or a beta-plus particle (a positron).

2. Mass and charge: Gamma decay does not change the mass or atomic number of the nucleus since no particles are emitted. Alpha decay reduces the atomic number by 2 and the mass number by 4, as an alpha particle is emitted. Beta decay changes the atomic number, with beta-minus decay increasing it by 1 and beta-plus decay decreasing it by 1. The mass number remains the same in beta decay.

3. Penetrating power: Gamma rays have the highest penetrating power among the three types of decay. They can pass through most materials and require dense shielding (e.g., lead or concrete) to attenuate them. Alpha particles have low penetrating power and can be stopped by a sheet of paper or a few centimeters of air. Beta particles have intermediate penetrating power and can be stopped by a few millimeters of aluminum.

4. Energy release: Gamma decay releases energy in the form of high-energy photons. Alpha decay releases a significant amount of energy since an alpha particle carries substantial kinetic energy. Beta decay releases energy in the form of the kinetic energy of the emitted beta particle.

gamma decay is a process that involves the emission of high-energy photons, while alpha and beta decay involve the emission of particles with mass and charge. Gamma rays have higher penetrating power and do not cause changes in the mass or atomic number of the nucleus, distinguishing them from alpha and beta particles.

Answer:

Internal energy is the microscopic energy contained in a substance, given by the random, disordered kinetic energy of the molecules. In addition it includes the potential energy between these molecules, and the nuclear energy contained in the atoms of these molecules

Answer:

Internal energy, in thermodynamics, the property or state function that defines the energy of a substance in the absence of effects due to capillarity and external electric, magnetic, and other fields.

Explanation:

Answer:

So what you do is you add all of them then you put an n with the answer.

Explanation:

Answer:

106.8

Explanation:

If you multiply 6 and 17.8, you'll get 106.8.

If that's wrong, my apology's !