while sitting in class your body exerts a force of 600 N on your chair , how much work do you do ?

The periodic table's group 17 is the home of an element. Most likely, this component is a. at room temperature, a solid sample of this element would resemble halogens and appear black and metallic.

Therefore, the periodic table's group 17 is the home of an element. Most likely, this component is a. At room temperature, a solid sample of this element would have a halogens look and appear black and metallic.

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Explanation:

vi = 5 and vf = 8 are the initial and final velocities respectively. The change in time is t = 20 seconds.

So,

x = 0.5*(vi + vf)*t

x = 0.5*(5+8)*20

x = 130 meters

represents the distance traveled. The first equation shown above is one of the four kinematics equations.

If the current is held constant, an increase in voltage will result in an increase in resistance.

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Answer:

155.17N.

Explanation:

The magnitude of the net force is expressed as;

F = mv²/r where;

m is the mass

v is the velocity of the airplane

r is the radius of the loop

Given

m = 95kg

v = 70m/s

r = 3km = 3000m

Required

Magnitude of the net force

F = 95*70²/3000

F = 95*4900/3000

F = 95*49/30

F = 4655/30

F = 155.17N

Hence the magnitude of the net force on the 95 kg pilot at the bottom of this loop is 155.17N.

The net force on the pilot is 1551.67 N.

Force can be defined as the product of mass and acceleration.

To calculate the magnitude of the net force at the bottom of the loop, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, the net force on the pilot is 1551.67 N.

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Answer:

C. The spinning of an object on its axis.

Explanation:

The definition of rotation answers this question.

A good way to remember is that when you rotate, you turn, and when you revolve, you move around.

Answer:

iron nail rusting

Explanation:

Answer:

117/60*50

Explanation:

Trust me bc I'm smart

Answer:

4.6Min

Explanation:

This is a very simple momentum problem

\(\left \{ {{M_{Ast}*V_{1} = M_{Cam} *V_{2} \\} \atop {t=\frac{x}{V_{1} } }} \right.\)

\((74.2KG-0.872KG)V_{1}=0.872KG*12M/S\)

\(V_{1}=0.1427M/S\)

\(t=\frac{39.8M}{0.1427M/S} =279s=4.6Min\)

about use 4.6Min back shuttle.

The observation that electromagnetic radiation with energy above a certain value can eject electrons out of a metal is a piece of evidence that they have particle-like properties.

The observation that electromagnetic radiation with energy above a certain value can eject electrons out of a metal is a piece of evidence that they have particle-like properties.

This observation that electromagnetic radiation behaves like particles is known as the photoelectric effect.

It provides evidence that electromagnetic radiation exhibits particle-like properties. When EMR with sufficient energy (above a certain threshold) interacts with a metal surface, it can cause the ejection of electrons from the metal.

This behavior indicates that EMR behaves as discrete packets of energy called photons, which transfer their energy to the electrons and cause their release. The photoelectric effect supports the particle nature of EMR and is a fundamental concept in the field of quantum mechanics.

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Answer:

Uhh??!?!?!?!?

Explanation:

Answer:

The last column of the table gives this relationship:

w/m = g

Rewrite the equation to solve for W: W = m × g.

For one washer, the table shows a mass of 0.6 kilograms, a force of 5.9 newtons, and an acceleration due to gravity of 9.8 N/kg. The equation works correctly for these values and for the other values in the table:

W = m × g = 0.6 kg × 9.8 N/kg    5.9 N.

Explanation:

This is the answer on Edmentum. :)

The energy transferred by the heater that has a power of 2500W and is turned on for 180s is 450,000J.

Electrical energy is the energy made available for consumption or consumed in the form of electricity or electric power.

Electrical energy can be calculated as follows:

Electrical energy = Power x Time.

The total amount of electrical energy used depends on the total power used by all electrical devices and the total time they are used in the home.

According to this question, a heater has a power of 2500W and is turned on for 180 seconds. The energy can be calculated as follows;

E = 2500W × 180s

E = 450,000J

Therefore, 450,000J is the energy transferred to the heater.

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Answer:

Explanation:

To verify the hypothesis that the Earth has a liquid outer core and a solid inner core, we can use seismographs to study seismic waves that pass through the Earth's interior. The experiment can be set up as follows:

1. Select multiple seismograph stations around the globe to record seismic waves.

2. Choose a location for an earthquake to occur. The earthquake should be large enough to generate seismic waves that travel through the Earth's interior and be located far away from the selected seismograph stations.

3. Record the seismic waves generated by the earthquake at the various seismograph stations.

4. Analyze the seismic waves to determine how they interact with the Earth's interior. Specifically, we will study how the seismic waves pass through the Earth's outer and inner core.

5. Repeat the experiment using earthquakes of different magnitudes and at different locations, and record the resulting seismic waves.

Equipment needed for the experiment include seismographs, computers for data analysis, and earthquake monitoring systems. Seismographs can be installed in various locations around the globe to record the seismic waves generated by the earthquake. Data from these seismographs can be collected and analyzed using computer software to determine how the seismic waves interact with the Earth's interior.

Evidence that proves the outer core is liquid includes the observation of seismic waves that cannot travel through the liquid outer core, resulting in a shadow zone on the opposite side of the Earth from the earthquake. This shadow zone indicates that the seismic waves are refracted or absorbed by the liquid outer core. In contrast, evidence that proves the inner core is not liquid includes the observation of seismic waves that are reflected and refracted by the inner core boundary. This is due to the fact that the inner core is solid and has a different density and composition than the outer core.

To use repeatability to show whether the hypothesis is valid or not, we can repeat the experiment using earthquakes of different magnitudes and at different locations, and record the resulting seismic waves. If the results from multiple experiments are consistent with the hypothesis, then we can have greater confidence that the hypothesis is valid. If the results from multiple experiments are inconsistent, then we would need to investigate further to determine the cause of the inconsistency and revise the hypothesis accordingly.

Answer:

The answer is  271.3 joules .

Explanation:

          Work = (weight) x (distance)

 Work = (50 lb) x (1 kg / 2.20462 lb) x (9.81 newton/kg)

                          x (4 feet) x (1 meter / 3.28084 feet)

          = (50 x 9.81 x 4) / (2.20462 x 3.28084)  newton-meter

          =        271.3 joules .

We don't need to know how long the lift took, unless we

want to know how much power he was able to deliver.

                  Power = (work) / (time)    

                              = (271.3 joule) / (5 sec)  =  54.3 watts .

________________________________________

The easy way:

        Work = (weight) x (distance)

                  = (50 pounds) x (4 feet)  =  200 foot-pounds

Look up (online) how many joules there are in 1 foot-pound.

There are  1.356 joules in 1 foot-pound.

So  200 foot-pounds = (200 x 1.356) = 271.2 joules.

credits original answer AL2006

The potential energy of the lemming when it lands is 0.9108672 J.

To determine the potential energy (PE) of the lemming when it lands, we need to consider the conservation of energy. The potential energy of an object is given by the formula PE = mgh, where m is the mass of the object, g is the acceleration due to gravity, and h is the height.

Given:

Mass of the lemming (m) = 0.0780 kg

Height of the cliff (h) = 5.36 m

First, let's calculate the potential energy when the lemming is on the cliff. Using the given formula, we have:

PE = mgh

PE = 0.0780 kg * 9.8 m/s² * 5.36 m

PE = 0.413616 J

Next, we need to determine the final kinetic energy of the lemming just before it lands. We can use the equation for kinetic energy (KE) given by KE = (1/2)mv², where v is the velocity of the lemming.

Given:

Velocity of the lemming (v) = 4.84 m/s

Calculating the kinetic energy, we have:

KE = (1/2) * 0.0780 kg * (4.84 m/s)²

KE = 0.9108672 J

According to the conservation of energy, the potential energy at the top of the cliff is equal to the kinetic energy just before landing.

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When a heat engine is operating between two temperatures (QH>QC), the maximum efficiency attainable is Carnot efficiency .

Carnot efficiency is the maximum theoretical efficiency of a heat engine, defined as the ratio of the work done by the engine to the heat absorbed from a high temperature source, as described by the Carnot cycle.

It is considered as the most efficient possible cycle for converting heat into useful work, and serves as an upper bound for the efficiency of all heat engines.

The Carnot efficiency is expressed as a function of the temperature difference between the hot and cold sources, and is independent of the working fluid or materials used in the engine.

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Answer:

increasing the temperature of the object

Answer:

the correct one is b,  Decrease the launch speed and Low the launch height

Explanation:

Let's find the solution to the problem in order to answer the questions.

The bullet is fired horizontally with a velocity vo, let's find the time or it takes to reach the ground

      y = y₀ + \(v_{oy}\) t - ½ g t²

as it shoots horizontally v_{oy} = 0 and when I reach the floor y = 0

       0 = y₀ - ½ g t2

       t = \(\sqrt{\frac{2y_{o} }{g} }\)

where y₀ is the height of the cliff

at this time the bullet recreates a distance of

       x = v₀ t

we substitute

       x = v₀ \sqrt{\frac{2y_{o} }{g} }

There, to reduce the range of the bullet, we must decrease its speed. This is the magnitude that most affects the distance and to a lesser degree we can decrease the height.

When checking the answers, the correct one is b

The moose runs away 57.94 meter in 7.43 second.

Acceleration is the rate at which a velocity changes over time. It qualifies as a vector quantity because it possesses both direction and magnitude. Meter/second^2 (m/s^2) is the SI unit of acceleration.

Acceleration of the moose: a = 2.1 m/s^2.

Final speed of the moose: v = 15.6 m/s.

Hence, time taken by the moose =v/a

= 15.6/2.1 second.

= 7.43 second

distance travelled by the moose = v²/2a

= 15.6²/(2×2.1) meter

= 57.94 meter.

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Answer:

v = 7.95 m/s

Explanation:

Given that,

Wavelength of a wave, \(\lambda=53\ cm=0.53\ m\)

Frequency of a wave, f = 15 Hz

We need to find the speed of the wave. The speed of a wave is given by :

\(v=f\lambda\\\\v=15\ Hz\times 0.53\ m\\\\v=7.95\ m/s\)

So, the wave move with a speed of 7.95 m/s.

D. The canister with the fastest moving particle is Z due to concentration of particle.

The speed of the particles depend on the mean distance of the particles.

The canister with the largest concentration per particle will contain particles with the greatest speed.

If the particle concentration is increasing from W to Z, then Z will have fastest moving particle.

Thus, the canister with the fastest moving particle is Z due to concentration of particle.

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Answer:

d. Z

Explanation:

If all the canisters had the same amount of particles, which canister would have the fastest moving particles?

Z

Answer:

air? i think

Explanation:

Answer:

.

Explanation:

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Answer:

The speed is 10 m/s

Explanation:

Th mass if the rock = 100 g = 0.1 kg

The kinetic energy = 5.0 J

speed of the rock = ?

The kinetic energy of the rock is given by the equation

E = \(\frac{1}{2} mv^{2}\)

where

m is the mass of the rock

V is the velocity of the rock

substituting, we have

5 = \(\frac{1}{2} *0.1*v^{2}\)

\(v^{2}\) = 5/0.05 = 100

v = \(\sqrt{100}\) = 10 m/s

Answer:

A toaster usually takes in electrical energy.

Two types of energy are created.

In the first step, all of the input electrical energy is transformed into heat energy. That heat goes first into the coils or heating elements.

The heating elements get hot and glow.

The hot elements then transfer thermal energy (heat energy) into the air inside the toaster.

Explanation:

Answer: electrical energy

Explanation: An electric toaster takes in electrical energy from the power outlet and converts it into heat, very efficiently. If you want your toast to cook quickly, you need a toaster that radiates as much heat as possible each second onto your bread. hope this helps. Can u pls give me brainliest

Answer:

Explanation:

When an object's speed increases at a constant rate, we say it has constant/uniform acceleration.

Answer:

F = 250 [N] (Force exerted by Sunita)

Explanation:

First we must understand the use of the lever, in the attached picture we see that it is fulcrum and other features.

The moment that the load exerts with respect to the fulcrum should be calculated, as the distance is 1 [m].

\(M=F*d\\M=1000*1\\M=1000[N*m]\)

Now Sunita must exert the same moment using the remaining distance (4 [m]).

\(1000=F_{sunita}*4\\F_{sunita}=1000/4\\F_{sunita}=250 [N]\)

The thermal conductivity of a material and the temperature differential between two objects affect the rate of thermal energy transfer between them would be an excellent question on the factors that influence thermal energy transfer.

The amount of radiant energy that enters a residence in the winter is maximised by large windows that face south. Tiny windows that face north help keep heat in. Triple-paned windows minimise thermal energy loss.

The surface area, volume, material, and kind of the surface the object is in touch with are all factors that affect how quickly an object transfers energy by heating.

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Answer:

so you have your boxes go by tens on the x-axis okay which is the one going straight up then the second number goes by 5's is your y-axis. 30,6 so 30 is your x and 6 is your y. start at 0,0 which is the little corner piece. find 30 on x and then go over 6 and that's it!

Explanation:

Answer: while electric fields aren’t visible or tangible, they are mensurable.

Explanation: you might want to attach the experiment notes to your question***

Answer: 13 miles.

Explanation: