The net horizontal force on a box F as a function of the
horizontal position x is shown below.
Force (N)
40
20+
Position (m)
4
4
6
oc
10
12
14
-20+
-40
What is the work done on the box from x = 0m to
16 m?
Round answer to two significant digits.
J

Answer:r other boundary that does not absorb the energy of the radiation and bounces the waves away from the surface. The simplest example of visible light reflection is the surface of a smooth pool of water, where incident light is reflected in an orderly manner to produce a clear image of the scenery surrounding the pool. Throw a rock into the pool (see Figure 1), and the water is perturbed to form waves, which disrupt the reflection by

Explanation:

Activity: Is it the same?!

Reflection of light (and other forms of electromagnetic radiation) occurs when the waves encounter a surface or other boundary that does not absorb the energy of the radiation and bounces the waves away from the surface. The simplest example of visible light reflection is the surface of a smooth pool of water, where incident light is reflected in an orderly manner to produce a clear image of the scenery surrounding the pool. Throw a rock into the pool (see Figure 1), and the water is perturbed to form waves, which disrupt the reflection by scattering the reflected light rays in all directions.

Some of the earliest accounts of light reflection originate from the ancient Greek mathematician Euclid, who conducted a series of experiments around 300 BC, and appears to have had a good understanding of how light is reflected. However, it wasn't until a millennium and a half later that the Arab scientist Alhazen proposed a law describing exactly what happens to a light ray when it strikes a smooth surface and then bounces off into space.

In this activity you will be working as an engineer that is working to modify different kinds of digital cameras and to study the effect of changing incident angle on the reflected angle.

Method

Explain the steps of your experiment and identify the scientific variables:

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

• Independent Variable

----------------------------------------------------------------------------------------------------------------

• Dependent Variable

--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

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Answer:

If one of the filaments burns out, the resistance and the potential difference across the other lamps will not change; therefore, their currents will remain the same.

Explanation:

Answer:

Answer:

The correct answer is - Regular soda can would sink and diet soda can will float.

Explanation:

The correct answer is - Regular soda can would sink and diet soda can will float.

Reason - As diet soda cans contains artificial sweetener so, the weight of the diet soda can is less the the eight of the regular soda so. Due to this reason , diet soda can will float and another one sinks in water.

Answer:

B

Explanation:

Trust me

Wavelength is the only one that CAN be.

A, B, or D can't be.

Answer:

Using a Compass to Identify Magnet North Pole

Watch carefully at where the compass needle points. The point that normally points to the north pole of Earth should point to one end of the magnet. That end is actually the South pole of the magnet

Explanation:

Hope it help you

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Answer

Mehanical energy

Please. Mark brainlist

I am not very much sure but I will give a small explanation here

A bow and arrow possesses mechanical energy. When the arrow is drawn it has potential energy and when it is released it produces a force to propel the arrow towards the aimed target, therefore giving the arrow kinetic energy. When you combine both energies it creates mechanical energy

Answer:

Given

mass (m) =5kg

velocity (v) =7.3m/s

kinetic energy (k. e) =?

Form

[tex]k.e = \frac{1}{2} MV {}^{2} \\ = \frac{1}{2} \times 5 \times 7.3 {}^{2} \\ 133.23kj[/tex]

I hope this help

Answer:

in the parallel connection the light bulbs shine less than in the series connection

Explanation:

In a series circuit the current through the whole circuit is the same, therefore the power (brightness) of each bulb is

           P = i² R

where R is the resistance of each bulb and i the current of the circuit.

If we connect the light bulbs and the cells in parallel, the current in the circuit is the sum of the east that passes through each light bulb,

            i = i₁ + i₂

if the two light bulbs are the same

           i = 2 i₁

           i₁ = i / 2

so the power of each bulb is is

           P = i₁² R

           P = R i² / 4

           P = ¼ P_initial

Therefore we see that in the parallel connection the light bulbs shine less than in the series connection

it may help you have a great day

Answer:

Option (c) Acceleration is 1/2x the original acceleration

Explanation:

To know the the correct answer to the question, we shall determine the acceleration of the box in each case.

Case 1:

Mass (m) = m

Force (F) = 20 N

Acceleration 1 (a₁) =?

F = ma₁

20 = m × a₁

Divide both side by m

a₁ = 20 / m

Case 2:

Mass (m) = 2m

Force (F) = 20 N

Acceleration 2 (a₂) =?

F = ma₂

20 = 2m × a₂

Divide both side by 2m

a₂ = 20 / 2m

a₂ = 10 / m

Finally, we shall determine the acceleration of the box after the mass was doubled. This can be obtained as illustrated below:

Acceleration 1 (a₁) = 20 / m

Acceleration 2 (a₂) = 10 / m

a₂ : a₁ = 10 / m : 20 / m

a₂ / a₁ = 10 / m ÷ 20 / m

a₂ / a₁ = (10 / m) × (m / 20)

a₂ / a₁ = ½

Cross multiply

a₂ = ½a₁

Thus, the acceleration of the box after the mass was doubled is ½ times the original acceleration.

Answer:

Mass of the truck is [tex]1154[/tex] Kg

Explanation:

As we know that

Force is the product of mass and acceleration.

F = m * a

Here acceleration, a [tex]= 39[/tex]  m/s^2

Force, F [tex]= 45000[/tex] Newton

Mass = [tex]\frac{F}{a}[/tex]

Mass

[tex]= \frac{45000}{39} \\= 1154[/tex] Kg

Answer:

yes

Explanation:

there are other quantities that are dimensionless, but have a unit.

For example, radian is the unit for an angle. But it is dimensionless because it is defined to be the ratio of two lengths.,

a dimensionless quantity will always be independent of the base units — meter, second, kilograms, kelvin, candela, moles, ampere.

Other examples:

1. Mass fraction

2.Mole fraction

both have unit (kg/kg)

Answer:

A quantity that has dimensions must have units. Yes a quantity have units but still be dimensionless for example,unit of angle is radian ,but it is a dimensionless quantity. A dimensionless quantity may have unit. ... A unitless quantity never has a non-zero dimension.

I hope it's helpful!

Hope it helps

Answer:

B) 0.0456

Explanation:

It is given that :

Rationale :

UCL = 480

LCL = 480

∴ Mean , [tex]$\bar X = 500$[/tex]

The standard deviation of sample (Sn) = 11.55

Z (for UCL) [tex]$=\frac{\text{UCL - Mean}}{\text{Sn}}$[/tex]

                  [tex]$=\frac{520-500}{10}$[/tex]

                  = 2

Similarly,

Z (for LCL) [tex]$=\frac{\text{LCL - Mean}}{\text{Sn}}$[/tex]

                  [tex]$=\frac{480-500}{10}$[/tex]

                  = -2

Now using the z table for finding the confidence level between Z value of -2 and 2.

Confidence level = 0.4772 + 0.4772

                             = 0.9544

Risk (alpha) = 1 - confidence level

                   = 1 - 0.9544

                   = 0.0456

Answer:

A. That enough light of any frequency would cause electrons to flow.

Explanation:

A P E X

Scientists using classical, Newtonian physics expect to observe the photoelectric effect because enough light of any frequency would cause electrons to flow.

When a medium receives electromagnetic radiation, electrostatically charged particles are emitted from or inside it.

The emission of ions from a steel plate when light falls on it is a common definition of the effect. The substance could be a solid, liquid, or gas; and the released particles could be protons or electrons.

Scientists using classical, Newtonian physics expect to observe the photoelectric effect because enough light of any frequency would cause electrons to flow.

The flow of the electron is a must to understand the photo electric effect.

Hence option A is correct.

To learn more about the photoelectric effect refer to the link;

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Answer:

i would use the grapefruit and throw it into the water 1 by 1 one leaving sometime in between to see the sharks reaction to it. If they get attracted to it i would throw 1 in then use the bucket to push foward as fast as i can with all of my strength so i can get an equal and opposite reaction from the water to push me foward, i would keep this up for as long as i can. The size of the bucket and the amount of grapefruit were never specified so i would use this for my benefit to say its enough to get to shore

Explanation:

Answer:

T = 10 seconds

Explanation:

Given that,

A remote car makes 2 revolutions in 20 seconds.

We need to find the period of the object.

It means, it will make [tex]\dfrac{2}{20}=0.1\ \text{revolutions/second}[/tex] .

lt T be the period of the object. So,

[tex]T=\dfrac{1}{0.1}\\\\T=10\ s[/tex]

It will take 10 seconds for one revolution.

Answer:

Light wave is an EM wave that can only be seen by humans New questions in Physics Engineers at the Space Centre must determine the net force needed for a rockets engine to achieve an acceleration of 70 m/s2.

Explanation:

Answer:

yes

Explanation:

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Answer:

The effect of gravity is only to shift the equilibrium point, so at equilibrium (at rest), a vertical spring will be extended as compared with the same spring in a horizontal position. But this does not affect the period.

As  the spring constant or displacement is changed, the value and direction of the restoring force change, and they are always toward the equilibrium position of the spring when it is stretched.

When an object is relaxed or stretched, it is responsible for returning it to its original equilibrium position, such as a spring when stretched, and the force is directly proportional to the displacement and acts in the opposite direction of the displacement, the restoring force is responsible for the oscillations and waves, and its properties.

Hence, as the spring constant or displacement is changed, the value and direction of the restoring force change, and they are always toward the equilibrium position of the spring when it is stretched.

Learn more about the restoring force here.

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Answer:

a chicken

a chicken came first

Answer:

A Chicken

A chicken came first

Answer:

Final momentum after a head on collision is -2kgm/

Explanation:

  One ball moves to the right and the other moves opposite  and momentum is a vector quantity so that considering the direction

Initial momenta are        P₁=2x3=6kgm/s        P₂=4x(-2)=-8kgm/s      

Final momentum is the vector sum of P(final)= 6-8= -2 kgm/s

Answer:

dd

Explanation:

I dont know I dont know I dont know I dont know

Answer:

they are called phases of the moon.

The different shapes of the moon seen from Earth are called  phases of moon

The portion of the moon that we can see from the earth on any given night is called phases of moon . There are four phases of moon 1) new moon 2) first quarter 3) full moon 4) third quarter

The earth rotates around the sun and the moon rotates around the earth . so , now we know that moon is in between sun and earth , due to this orbiting the sunlight falls on moon and we see moon in the light of sun as we know moon does not have its own light . Because of this rotation sunlight fall at different angles  because position of moon with respect to earth is changing constantly due to which different shapes has been observed from the earth's surface ,after being reflected that light reaches the earth and being observed by the observer on earth as moon having different shapes called its phases of moon.

learn more about phases of moon

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Answer:

Current that reverses direction in the regular pattern is called an alternating current, abbreviated as 'AC'.

Explanation:

hope this helps!

Answer:

for 4.567 I can't tell if it x [tex]10^{3}[/tex] or x [tex]10^{5}[/tex] so:

answer using x [tex]10^{3}[/tex] = 0.0000644697N

answer using x [tex]10^{5}[/tex] = 0.00644697

Explanation:

use equation F = GMm/[tex]R^{2}[/tex]

Answer:

650 N / 0.10 m2 = 6500 Pa

Explanation:

The pressure that could be exerted on the ground with each top should be 6,500 Pa

Given that,

We need to determine the pressure.

So, the following formula should be used.

[tex]= \frac{Mass}{area}\\\\= \frac{650}{0.10} \\\\[/tex]

= 6,500 Pa

Therefore we can conclude that the pressure that could be exerted on the ground with each top should be 6,500 Pa.

Learn more about the pressure here: brainly.com/question/23358029