An object A with a kinetic energy of 800 joules moving horizontally is subjected to a force of 100 Newtons, which is the opposite of motion as it moves from point X to point Y. XY distance is 2 m. What is the energy of A at point Y?

Answer:

I= 3.5 amps

Explanation:

Step one:

given data

rating of resistor R= 8 ohms

power P= 100W

Required

The current I

Step two

Yet this power is also given by

[tex]P = I^2R[/tex]

make I subject of the formula we have

[tex]I= \sqrt{\frac{P}{R} }[/tex]

substitute

[tex]I= \sqrt{\frac{100}{8} }\\\\I=\sqrt{12.5}\\\\I= 3.5 amps[/tex]

Answer:

the answer is 12 because if your magnetic value and Electric field is 3.2 the answer will be 12

Answer:

Explanation:

Magnetic flux Ф is expressed using the formula;

Ф = BA

B is magnetic field

A is the area of the square conductor

Given

B = 1.0T

A =L²

Area A = 2.0² = 4.0m²

Get the magnetic flux

Ф = 1.0 * 4.0m²

Ф = 4.0Wb/m²

Hence the magnetic flux through the conductor is 4.0Wb/m²

Answer:

Canva. Although Canva's free storyboard app for iOS and Android is targeted more at video production, it still provides animators and UX designers everything they need.

Explanation:

The speed with which the auto was going when it left the road will be 29.3 m/s.

Acceleration is the rate of change of velocity of an object. Acceleration is a vector quantity as it has both the magnitude and direction. The SI unit of acceleration is meter per second square.

From the given question, we can deduce that the only force which will be acting on the car is the gravitational force and as such the acceleration during free fall of the object will be equal to the acceleration due to gravity acting on the object however, this will be negative since it is towards the ground surface.

Thus, acceleration of the auto = - 9.8 m/s²

The time in which the auto falls will be,

t² = 2 × s/ a

t² = 2 × -43.9/ -9.80

t² = 8.95

t =[tex]\sqrt{8.95}[/tex]

t = 2.99 seconds

The velocity with which the auto will be going when it left the road will be,

Velocity = Displacement/ Time

Velocity = 87.7/ 2.99

Velocity = 29.3 m/s

Therefore, the velocity with which the auto will be moving when it left the road will be 29.3 meters per second.

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Answer:

A). 2.3 s

Explanation:

Given that,

Length of the string = 130cm or 1.3 m

g near Earth's surface = 9.8 [tex]ms^{-2}[/tex]

To determine the period of a pendulum near Earth’s surface;

T = 2 π [tex]\sqrt{\frac{L}{g} }[/tex]

T = 2π[tex]\sqrt{\frac{1.3}{9.8} }[/tex]

T = 2.3 sec

Therefore, the period of the pendulum near the earth's surface is 2.3 sec.

Answer:

|B - A| = 12.92 units

Explanation:

In order to find the magnitude of B-A vector, we first write A and B in Vector Notation:

A = Aₓ i + Ay j

A = 7.6 i - 9.2 j

B = Bₓ i + By j

B = -5.1 i - 6.8 j

So, there difference will be:

B - A = (-5.1 i - 6.8 j) - (7.6 i - 9.2 j)

B - A = -12.7 i + 2.4 j

Now, the magnitude of this vector can be found out by using the formula:

|B - A| = √[(x-component)² + (y-component)²]

|B - A| = √[(-12.7)² + (2.4)²]

|B - A| = 12.92 units

We will see that the magnitude of the difference of the vectors is 12.92

Here we have two vectors:

A = <7.6, -9.2>

B = <-5.1, -6.8>

To get the difference we just subtract the correspondent components:

B - A = <Bx - Ax, By - Ay> = <-5.1 - 7.6, -6.8 - (-9.2)> = <-12.7, 2.4>

The magnitude of that vector is just:

[tex]M = \sqrt{(2.4)^2 + (-12.7)^2} = 12.92[/tex]

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Answer:

The thickness is  [tex]\Delta y = 2.4 *10^{-6} \ m[/tex]

Explanation:

From the question we are told that

   The wavelength is  [tex]\lambda = 480 \ nm = 480*10^{-9} \ m[/tex]

    The first order of the dark  fringe is  [tex]m_1 = 16[/tex]

     The second order of dark fringe considered is  [tex]m_2 = 6[/tex]

Generally the condition for destructive interference is mathematically represented as

        [tex]y = \frac{m \lambda}{2}[/tex]

Here y is the path difference between the central maxima(i.e the origin) and any dark fringe

So  the path difference between the 16th dark fringe and the 6th dark fringe is mathematically represented as

      [tex]y_1 - y_2 = \Delta y = \frac{m_1 \lambda}{2} - \frac{m_2 \lambda}{2}[/tex]

=>  [tex]y_1 - y_2 = \Delta y = \frac{16 *480*10^{-9}}{2} - \frac{6 *480*10^{-9}}{2}[/tex]

=>  [tex]y_1 - y_2 = \Delta y = 5 (480*10^{-9})[/tex]

=>  [tex]\Delta y = 2.4 *10^{-6} \ m[/tex]

Answer:

Explanation:

The solution of the question has been put in attachment.

Answer:

1.142

Explanation:

Answer:

500Hertz

Explanation:

Given the fundamental frequency of the string given as  1.25x10²Hz

Harmonics are integral multiples of the fundamental frequency.

In strings, the third harmonic F3 is expressed in terms of the fundamental frequency expressed as;

F3 = 4F0

F0 is the fundamental frequency;

Given

F0 = 1.25x10²Hz

F3 = 4(1.25x10²)

F3 = 4(125)

F3 = 500Hz

Hence the  frequency of the third harmonic is 500Hertz

Answer:

[tex]R=519.61N[/tex]

Explanation:

From the question we are told that

Tension T on a cable are T=300N

Generally the tensions on a pulley is

       [tex]\sum f_x=T+T*cos(\theta)[/tex]

Therefore

      [tex]\sum f_x=300+300*cos(60)[/tex]

      [tex]\sum f_x=300 *1.5[/tex]

      [tex]\sum f_x=450N[/tex]

Hence

      [tex]T*sin(60) = 259.81N[/tex]

     [tex]R= 450\=i +259.81\=i[/tex]

     [tex]R=\sqrt{450^2+259.8^2}[/tex]

     [tex]R=519.61N[/tex]

Answer:

It is the same in magnitude and opposite in direction.

Explanation:

The gravitational force the moon and the earth exert on each other are equal.

According to Newton's third law of motion, action and reaction are equal and opposite.

The gravitational force the earth exerts on the moon is equal in magnitude but opposite in direction to the gravitational force the moon exerts on the earth.

The magnitude of the gravitational force between the moon and the earth is calculated as follows;

[tex]F = \frac{GM_e M_m}{R^2}[/tex]

Thus, the gravitational force the moon and the earth exert on each other are equal.

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Answer:

[tex]0.542*10^{23}\ Aluminum\ Atoms[/tex]

Explanation:

[tex]We\ are\ given:\\Density\ of\ aluminum=2.7\ g/cm^3\\Volume\ of\ aluminum-cube=0.9\ cm^3\\Hence,\\As\ we\ know\ that,\\Density=\frac{Mass}{Volume}\\Mass=Density*Volume\\Hence,\ here,\\Mass\ of\ the\ solid\ iron\ cube=2.7*0.9=2.43\ g\\Now,\\We\ also\ know\ that,\\Gram\ Atomic\ mass\ of\ Aluminum = 26.98 \approx 27\ g\\Hence,\\No.\ of\ particles=\frac{Mass}{GAM}*Avagadro's Constant\\Hence,\ here\\No.\ of\ Aluminum\ atoms=\frac{2.43}{27}*6.022*10^{23} \approx 0.542*10^{23}\ Aluminum\ Atoms[/tex]

Explanation:

Which of the following best defines self-efficacy? The belief in one's ability to cause an intended event to happen. ... If Bobby does not value athletic skill, his lack of talent will have less impact on his self-esteem than if he highly values athleticism.

Answer:

Explanation:

Newton's laws of motion are three physical laws that, together, laid the foundation for classical mechanics. They describe the relationship between a body and the forces acting upon it, and its motion in response to those forces. “

Explanation:

Gravitational potential energy

= mgh

= (2kg)(10N/kg)(5m)

= 100J.

Answer:

[tex]\boxed {\boxed {\sf 100 \ Joules}}[/tex]

Explanation:

Gravitational potential energy can be found using the following formula.

[tex]E_p=m*g*h[/tex]

where m is the mass, g is the gravitational acceleration, and h is the height.

The mass of the ball is 2 kilograms, its height is 5 meters, and the acceleration due to gravity is 10 Newtons per kilogram.

[tex]m= 2 \ kg \\h= 5 \ m \\g= 10 \ N/kg[/tex]

Substitute the values into the formula.

[tex]E_p=(2 \ kg)(10 \ N/kg)(5 \ m)[/tex]

Multiply the first 2 numbers. The kilograms (kg) will cancel out when multiplying.

[tex]E_p=(20 \ N)(5 \ m)[/tex]

Multiply again.

[tex]E_p=100 \ N*m[/tex]

[tex]E_p= 100 \ J[/tex]

The gravitational potential energy of the ball is 100 Joules.

Answer:

You should still use the app if you need it, but you definitely shouldn't rely on it. It's really good for what it is, but it's not an alternative to actually taking the test, just imagine what you would have gotten if you didn't use this

Explanation:

I don't understand your statement but, are you saying that you just got 63% positive rating of your answer to people's answers? Maybe you answer is either correct or somehow incorrect or maybe others answer is more applicable answer compared to yours BUT thanks for the free points! Btw could you mark this as brainliest? Thanks

Answer:

did u know there's no such thing as "pear cider."

Explanation:

Answer:

Fn = 246.2 N

Explanation:

I assume you meant meters per second squared for acceleration of the elevator.  All you have to after your picture/free-body diagram is made is add the forces together.  You could do this by finding them separately like I did or use Fn = m(Fg + Fe). I just calculated magnitude and didn't worry about signs.

Answer:

C.) A high velocity and Large mass.

Explanation:

Momentum of any object is defined by following formula

Here :  m = mass of object

v = velocity of object

now we know that since momentum is product of mass and velocity

So in order to have more momentum we need the value of this product to be more.  So this product will me large is both the physical quantity will be more in magnitude. So if mass is large and velocity will be more then the product of them will be large and hence the momentum of object will be more. Btw I had that question too.

Answer:

The force on rope is equal for both of them at any time.

For winning the game the force on ground is responsible.

Explanation:

The radius of its orbit = 8.27 x 10¹³ m

Given

mass Jupiter=1.9 x 10²⁷ kg

T = 16.9 days=1.46 x 10⁶ s

Required

the radius =r

Solution

To hold the moon in its orbit, the gravitational force between two objects (jupiter and moon) will be equal to the centripetal force

[tex]\tt G\dfrac{M.m}{r^2}=m.\dfrac{v^2}{r}\rightarrow v=\dfrac{2.\pi.r}{T}\\\\M=\dfrac{r^3.4\pi^2}{T^2.G}\rightarrow r^3=\dfrac{GMT^2}{4\pi^2}[/tex]

G = 6.67 x 10⁻¹¹ N/m²kg²

Input the value :

[tex]\tt r^3=\dfrac{6.67\times 10^{-11}\times 1.9\times 10^{27}\times (1.46\times 10^6)^2}{4\pi^2}\\\\r^3=6.85\times 10^{27}\rightarrow r=8.27\times 10^{13}[/tex]

Answer:

1.9 x [tex]10^{9}[/tex]

Explanation:

Answer: D) Mass, speed and radius all impact the centripetal force

Explanation:

If we change either the mass, speed, and/or radius, then the centripetal force will be different. Though on rare occasions we could change the variables together in a way to have the centripetal forces line up, but in general the before and after forces will likely be different. Changing one variable at a time only will definitely result in a different centripetal force.

This is because the centripetal force F is determined by the formula

F = (m*v^2)/r

where,

m = mass

v = velocity

r = radius

Answer:

Electromagnetic waves or EM waves are waves that are created as a result of vibrations between an electric field and a magnetic field. In other words, EM waves are composed of oscillating magnetic and electric fields. They are also perpendicular to the direction of the EM

Explanation:

Complete question is;

You are looking at a module specification

sheet that has the table of information

below. What is the maximum power of this

module in Watts to the nearest whole Watt?

Value

Polycrystalline si

Characteristic

Cell Type

Cell

Configuration

Voc

160 in series

137.2 V

V_imp: 29.3 V

Ilsc: 8.60 A

I_Imp: 8.02 A

Dimensions (mm/in): 1000 x 1600 x 50 mm / 39.4" x 63" x 2"

Weight: 10 kg / 22 lbs​

Answer:

P ≈ 235 Watts

Explanation:

Formula for power is;

P = IV

Now, for maximum power, we will make use of I_imp and V_imp given

Thus, P = I_imp × V_imp

We are given;

V_imp: 29.3 V

I_Imp: 8.02 A

Thus: P = 8.02 × 29.3 = 234.986 Watts

We are to approximate to the nearest whole watt.

Thus: P ≈ 235 Watts

Answer:2.5m/s^2 to the left

Explanation:

The acceleration of the block is "2.5 m/s² to the left"

Given,

Force,

Mass,

Considering equilibrium of forces on block,

then,

→ [tex]F_1 -F_2 = ma[/tex]

By substituting the values, we get

→     [tex]8-3 = 2a[/tex]

→           [tex]5 = 2a[/tex]

            [tex]a = \frac{5}{2}[/tex]

            [tex]a = 2.5 \ m/s^2[/tex] (to the left)

Thus the above answer i.e., option C is right.

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Answer:

D = 3.81 x 10⁻² m = 3.81 cm

Explanation:

We can use the formula of fringe spacing from Young's Double Slit experiment to answer this question:

[tex]\Delta x = \frac{\lambda L}{d}\\[/tex]

where,

Δx = distance between two consecutive dark fringes

λ = wavelength of light beam = 5.37 x 10⁻⁷ m

L = Distance between screen and slits = 2.14 m

d = slit separation = 6.03 x 10⁻⁵ m

But, we need the distance between first dark fringe on 1 side to 2nd dark fringe on other side. It means we need twice the distance between two dark fringes:

[tex]D = 2\Delta x = 2\frac{\lambda L}{d}\\[/tex]

where,

D = distance between first dark fringe on one side and 2nd dark fringe on other side of central maximum = ?

Therefore,

[tex]D = \frac{(2)(5.37\ x\ 10^{-7} m)(2.14\ m)}{6.03\ x\ 10^{-5}\ m }[/tex]

D = 3.81 x 10⁻² m = 3.81 cm