An electrically charged point particle with a mass of 1.41 x 10-6 kg is launched horizontally into a uniform electric field with a magnitude of 686 N/C. The particle's initial velocity is 5.39 m/s, directed eastward, and the external electric field is also directed eastward. A short time after being launched, the particle is 9.89 x 10-3 m below and 0.151 m east of its initial position. Determine the net charge carried by the particle, including the algebraic sign ( or -).

Answer:

15,000 J of potential energy

Explanation:

Mechanical energy of an object is the sum of its potential energy and kinetic energy.

45,000  = x + 30,000

45,000 - 30,000 = x

x = 15,000

Mark brainliest please!

ME=KE+PE

45000=30000+PE

PE=15000 J

At the given erro in angle, the error in the measurement of sin 90 degrees would be 0.001.

The percentage error of any measurement is obtained from the ratio of the error to the actual measurement.

The error of sin 90 degrees is calculated as follows;

sin 90 = 1

error in measurement = sin(90 - 0.5)

error in measurement = sin(89.5) = 0.999

Error in sin 90 degrees = 1 - 0.999

Error in sin 90 degrees = 0.001

Thus, at the given erro in angle, the error in sin 90 degrees would be 0.001.

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We know

\(\boxed{\sf Magnetic\:flux=\O=BA}\)

\(\\ \qquad\quad\sf{:}\dashrightarrow \O=5(2.5)\)

\(\\ \qquad\quad\sf{:}\dashrightarrow \O=12.5Wb\)

Explanation:

Magnetic flux = L I

= 5(2.5)

= 12.5 Wb

(b) 12.5 Wb

Answer:

25 watts

Explanation:

Power=work/time

work=force x distance

1000 × 3

=3000 Joules

power= 3000/120

=25 watts

If A set of pulleys is used to lift a piano weighing 1,000 newtons. The piano is lifted 3 meters in 120 seconds. Then the power used is equal to 25 watts.

Power is the rate at which work is done or energy is transferred. It is a physical quantity that measures how quickly energy is used or transformed.

P=W/s

Where W= work done in joules.

s= time in seconds.

Power is typically measured in watts (W), which is equivalent to joules per second (J/s). In simple terms, power can be defined as the amount of work done or energy transferred per unit of time.

Here in the question,

To calculate the power used to lift the piano, we need to use the formula:

Power = Work / Time

The work done in lifting the piano is given by:

Work = Force x Distance

Where

Force = the weight of the piano, which is 1,000 newtons,

Distance = the height to which it is lifted, which is 3 meters.

Then, the work done is:

Work = 1,000 N x 3 m = 3,000 joules

The time taken to lift the piano is 120 seconds.

Now we can substitute these values in the formula for power:

Power = Work / Time

Power = 3,000 joules / 120 seconds

Power = 25 watts

Therefore, the power used to lift the piano is 25 watts.

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The momemtum is not conserved in scenario d.

Momentum of an object is the product of its mass and velocity.

To determine in which of the conditions in which momentum is not conserved, we need to know the law of conservation of momentum.

The law of conservation of momentum states that as long as no external force acts on a system, the total momentum of the system of two colliding objects is conserved.

If we consider scenarios a, b and c, we see that no external force acts on the system of two objects in the three instances so, the total momentum is conserved.

In scenario d, an external force acts on the system, so total momentum is not conserved since according to the law of conservation of momentum, total momentum is only conserved when there is no external force acting on a system.

So, the momemtum is not conserved in scenario d.

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The reading on a vernier caliper can be represented as 45.75mm.

1. Understand the components of a vernier caliper: A vernier caliper consists of two main scales - the main scale and the vernier scale. The main scale is typically graduated in millimeters, while the vernier scale is a smaller scale that slides along the main scale.

2. Locate the main scale: Identify the main scale on the vernier caliper. The main scale is usually marked on the fixed jaw of the caliper and extends in a linear fashion.

3. Identify the vernier scale: The vernier scale is attached to the movable jaw of the caliper. It slides along the main scale and consists of smaller divisions.

4. Align the zero marks: Close the jaws of the caliper and ensure that the zero marks on both the main and vernier scales are aligned.

5. Determine the main scale reading: Read the main scale value that aligns with the zero mark on the vernier scale. In this case, the main scale reading will be 45mm.

6. Locate the vernier scale reading: Examine the vernier scale and identify the division on the vernier scale that lines up perfectly with a division on the main scale. This will give you the additional measurement beyond the main scale reading.

7. Determine the vernier scale reading: Find the division on the vernier scale that aligns with a division on the main scale. The value of this vernier division corresponds to the additional measurement. In this case, the vernier scale reading will be 0.75mm.

8. Add the main scale and vernier scale readings: Combine the main scale reading and the vernier scale reading to get the final measurement. In this case, the final reading will be 45.75mm.

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Explanation:

a boy walks at 2m/s for 30sec and run at 5m/s for 20sec. what is his average speed

The charge on each sphere is 742 n

In physics, Charge, also known as electric charge is a electrical charge, or electrostatic charge and symbolized q, is a characteristic of a unit of matter that expresses the extent to which it has more or fewer electrons than protons.

According to the question,

Distance = 15cm or 0.15m

Force =  0.22N

\(K=9*10^{9} kgm^2/c^2\) ( this is a constant value of K)

By using the formula,

F = \(\frac{kQq}{d^{2} }\)

0.220 N = 8.99

N·m²/C² * Q² / (0.15m)²

Q = 7.42e-7

C = 742 n

C is the charge of each sphere .

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Answer:

167?

Explanation:

i added both

Answer:

Zeus, Poseidon, Hera, Aphrodite, Ares, Hades

Explanation:

Zeus is the king of gods. Poseidon is god of the sea. Hera is goddess of Marriage, Ares is god of war. Hades god/lord or the underworld.

Answer:

increace

Explanation:

they are both going up

The energy of 25 kg object is moving at a velocity or 10 ml is 1250J.

KE = 1/2mv²

The mass is m = 25kg

The velocity is v = 10ms⁻¹

KE = 1/2 × 25 × 10²

⇒ KE = 1250J

Hence, Kinetic energy is 1250J

The energy an object has as a result of motion is known as kinetic energy. A force must be applied to an object in order to accelerate it. We must put in effort in order to apply a force. After the work is finished, energy is transferred to the item, which then moves at a new, constant speed.

The direction of a body or object's movement is defined by its velocity. In its basic form, speed is a scalar quantity. In essence, velocity is a vector quantity. It is the speed at which distance changes. It is the displacement change rate.

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Answer: D

X and Y

Explanation:

X The least amount of magnesium Took in magnesium

Y Slightly less magnesium than the cell Took in magnesium

Because active transport occurs when ions or molecules move from less concentration region to high concentration region through semi membrane with the help of some energy.

Answer:

Cells X and Y

Explanation:

Active transport occurs when a substance moves across a membrane against its concentration gradient.

Cells W and Z were placed in a liquid containing more magnesium than the cells. Magnesium therefore, diffuses passively down it's concentration gradient into the cells.

However, cells X and Y were placed in a solution containing less magnesium than the cells, yet these cells took in magnesium against this concentration gradient. This, shows that active transport had taken place.

Answer:

10.0 m

Explanation:

Since there is no amplitude at the point of the swimmer, we have destructive interference.

So, the path difference ΔL = L₂ - L₁ where L₁ = swimmer's shorter distance from one generator = 9.0 m and L₂ = swimmer's longer distance from the other generator = 14.0 m.  ΔL = 14.0 m - 9.0 m = 5.0 m

Also, since we have destructive interference, ΔL = (n + 1/2)λ where n = number of wavelengths and λ = wavelength of waves

For maximum wavelength, n = 0

So, ΔL = (n + 1/2)λ

ΔL = (0 + 1/2)λ

ΔL = λ/2

λ/2 = ΔL

λ = 2ΔL

λ = 2 × 5.0 m

λ = 10.0 m

So,  the longest wavelength that will produce this interference pattern is λ = 10.0 m

Mechanical kinetic energy is the energy of an object due to its motion.

a) Mechanical kinetic energy = (1/2)*mass*(velocity)^2

Mechanical kinetic energy = (1/2)*(6.80 x 10^3 kg)*(23.7 m/s)^2

Mechanical kinetic energy = 3.27 x 10^7 J

b) The mechanical kinetic energy of a moving object can be calculated using the following formula:

KE = 0.5 * m * v²,

where m is the mass of the object and v is the velocity.

In this case, we know the mass of the family car (1237 kg) and the mechanical kinetic energy of the box car (50444 J). To calculate the speed of the family car, we can rearrange the formula to solve for v:

v = √(2*KE/m)

v = √(2*50444/1237)

v = 42.62 m/s

What is Mechanical kinetic energy?

Mechanical kinetic energy is the energy associated with the movement of a body or object. It is also known as the energy of motion and is equal to one half of the mass of the object multiplied by the square of its velocity.

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Answer:

a) The total angle of the grinding wheel is 569.88 radians, b) The grinding wheel stop at t = 12.354 seconds, c) The deceleration experimented by the grinding wheel was 8.780 radians per square second.

Explanation:

Since the grinding wheel accelerates and decelerates at constant rate, motion can be represented by the following kinematic equations:

\(\theta = \theta_{o} + \omega_{o}\cdot t + \frac{1}{2}\cdot \alpha \cdot t^{2}\)

\(\omega = \omega_{o} + \alpha \cdot t\)

\(\omega^{2} = \omega_{o}^{2} + 2 \cdot \alpha \cdot (\theta-\theta_{o})\)

Where:

\(\theta_{o}\), \(\theta\) - Initial and final angular position, measured in radians.

\(\omega_{o}\), \(\omega\) - Initial and final angular speed, measured in radians per second.

\(\alpha\) - Angular acceleration, measured in radians per square second.

\(t\) - Time, measured in seconds.

Likewise, the grinding wheel experiments two different regimes:

1) The grinding wheel accelerates during 2.40 seconds.

2) The grinding wheel decelerates until rest is reached.

a) The change in angular position during the Acceleration Stage can be obtained of the following expression:

\(\theta - \theta_{o} = \omega_{o}\cdot t + \frac{1}{2}\cdot \alpha \cdot t^{2}\)

If \(\omega_{o} = 25\,\frac{rad}{s}\), \(t = 2.40\,s\) and \(\alpha = 26\,\frac{rad}{s^{2}}\), then:

\(\theta-\theta_{o} = \left(25\,\frac{rad}{s} \right)\cdot (2.40\,s) + \frac{1}{2}\cdot \left(26\,\frac{rad}{s^{2}} \right)\cdot (2.40\,s)^{2}\)

\(\theta-\theta_{o} = 134.88\,rad\)

The final angular angular speed can be found by the equation:

\(\omega = \omega_{o} + \alpha \cdot t\)

If  \(\omega_{o} = 25\,\frac{rad}{s}\), \(t = 2.40\,s\) and \(\alpha = 26\,\frac{rad}{s^{2}}\), then:

\(\omega = 25\,\frac{rad}{s} + \left(26\,\frac{rad}{s^{2}} \right)\cdot (2.40\,s)\)

\(\omega = 87.4\,\frac{rad}{s}\)

The total angle that grinding wheel did from t = 0 s and the time it stopped is:

\(\Delta \theta = 134.88\,rad + 435\,rad\)

\(\Delta \theta = 569.88\,rad\)

The total angle of the grinding wheel is 569.88 radians.

b) Before finding the instant when the grinding wheel stops, it is needed to find the value of angular deceleration, which can be determined from the following kinematic expression:

\(\omega^{2} = \omega_{o}^{2} + 2 \cdot \alpha \cdot (\theta-\theta_{o})\)

The angular acceleration is now cleared:

\(\alpha = \frac{\omega^{2}-\omega_{o}^{2}}{2\cdot (\theta-\theta_{o})}\)

Given that \(\omega_{o} = 87.4\,\frac{rad}{s}\), \(\omega = 0\,\frac{rad}{s}\) and \(\theta-\theta_{o} = 435\,rad\), the angular deceleration is:

\(\alpha = \frac{ \left(0\,\frac{rad}{s}\right)^{2}-\left(87.4\,\frac{rad}{s} \right)^{2}}{2\cdot \left(435\,rad\right)}\)

\(\alpha = -8.780\,\frac{rad}{s^{2}}\)

Now, the time interval of the Deceleration Phase is obtained from this formula:

\(\omega = \omega_{o} + \alpha \cdot t\)

\(t = \frac{\omega - \omega_{o}}{\alpha}\)

If \(\omega_{o} = 87.4\,\frac{rad}{s}\), \(\omega = 0\,\frac{rad}{s}\)  and \(\alpha = -8.780\,\frac{rad}{s^{2}}\), the time interval is:

\(t = \frac{0\,\frac{rad}{s} - 87.4\,\frac{rad}{s} }{-8.780\,\frac{rad}{s^{2}} }\)

\(t = 9.954\,s\)

The total time needed for the grinding wheel before stopping is:

\(t_{T} = 2.40\,s + 9.954\,s\)

\(t_{T} = 12.354\,s\)

The grinding wheel stop at t = 12.354 seconds.

c) The deceleration experimented by the grinding wheel was 8.780 radians per square second.

The equipotential surfaces associated with a point charge are concentric shells.

Charged material experiences a force when it is exposed to an electromagnetic field due to the physical property of electric charge. You can have a positive or negative electric charge.

The equipotential surface is the region where all points with the same potential are located. On the equipotential surface, a charge can be moved from one point to another without exerting any effort.

Thus,a point charge's related equipotential surfaces are concentric shells.

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Given:

Distance = 130 meters

θ = 35 degrees

F = 40 N

Let's find the work done if the traveler moves 130 meters.

Let's first make a free body sketch:

To find the work done by the traveler over the 130 meters, we have:

Where:

• W is the work done

• F is the force applied

• θ is the angle.

• x is the distance

Thus, we have:

Therefore, the work done is 4260 Nm.

• ANSWER:

4260 Nm.

Answer:

Explanation:

graphing is helpful

helps visualize the line

of your equation

Answer:

Because weight W = M g, the ratio of weights equals the ratio of masses.

(M_m g)/ (M_w g) = [ (p^2 Man )/ (2 K_man)] / [ (p^2 Woman )/ (2 K_woman)

but p's are equal, so

K_m/K_m = (M_w g)/(M_m g) = W_woman / W_man = 450/680 = 0.662Explanation:

Answer:

12.4m

Explanation:

Given

Length of string = 6.2m

L = λ/2 (for natural frequency (first harmonic)

λ = 2L

λ  = 2(6.2)

λ = 12.4m

Hence the wavelength of the produced standing wave is 12.4m

The Hypnotic Induction Profile (HIP) or the eye roll test, first proposed by Herbert Spiegel, is a simple test to loosely determine if a person is susceptible to hypnosis. A person is asked to roll their eyes upward. The degree to which the iris and cornea are seen is measured.

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Answer:

 ΔV = -2.1 L

Explanation:

To solve this exercise we can use the ideal gas equation for two points

         PV = nRT

          P₁V₁ = P₂ V₂

where point 1 is on the surface and point 2 is at the desired depth,

          V₂ = \(\frac{P_1}{P_2} \ V_1\)

let's calculate

           V₂ = ( \(\frac{1 atm}{2.5 atm}\) ) 3.5 L

            V₂ = 1.4 L

this is the new volume, the change in volume is

          ΔV = V₂ -V₁

          ΔV = 1.4-3.5

          ΔV = -2.1 L

Answer:

Diameter of Newton’s 5th ring = 0.30 cm

Diameter of Newton’s 15th ring = 0.62 cm

Diameter of Newton’s 25th ring = ?

From Newton’s rings experiment we infer that

D2n+m − D2n = 4λmR

For the 5th and 15th rings we have

D215 − D25 = 4λ * 10 * R _______ (1) (m = 10)

For 15th and 25th rings

D225 − D215 = 4λ * 10 * R _______ (2) (m = 10)

We equate the two derivatives

Equation (2) = Equation (1)

D225 − D215 = D215 − D25

D225 = 2D215 – D25

Substituting the values into the equation

D225 = 2 * 0.62 * 0.62 – 0.3 * 0.3 =0.6788 cm2

D25 = 0.8239 cm

Diameter of \(25^{th}\) Newton  Ring = 0.97 cm

Newton Rings is an experiment based on principle of  thin film interference

In Newton Rings Experiment the Diameter of  \(n^{th}\) dark ring is given by equation (1)

\(\rm D_n= 2\sqrt{n\lambda R} ......(1)\\where \; \\D_n = Diameter\; of \; n^{th} \; dark \; ring }\\n = Number \; of \; Ring\\\lambda = Wavelength \\R = Radius \; of \; Curvature \; of\; the \; lens\)

From the condition given

\(\rm D_5 = 0.3 \; cm \\D_{15} = 0.62 \; cm\\\\D_{25} = To \; be \; determined \\\)

Putting the values in equation (1) for fifth diameter we get

\(\rm D_5 = 0.3=2\sqrt{5\lambda R}.......(2) \\D_{15} = 0.62 = 2\sqrt{15\lambda R}.......(3) \\\\Equation \; (3) - Equation (2) \\\\0.32 = 2\sqrt{\lambda R} ( \sqrt{15} -\sqrt{5})\\\\2\sqrt{\lambda R } = 0.1954....(4)\\\)

So  From equation (1) and (4)

\(\rm Diameter \; of \; 25^{th} Ring =D_{25} = 2\sqrt{\lambda R } \times \sqrt{25} \\\\D_{25} = 0.1954\times 5 \\\\D_{25} = 0.97 \; cm\)

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Beats can be defined as the periodic fluctuations in the frequency of sound waves. That is option D

Sound waves are those waves that are produced by the vibration of an object whose energy is usually propagated through a medium.

When two sound waves of different frequencies meets, a periodic variation that occurs is called beats.

Therefore, Beats can be defined as the periodic fluctuations in the frequency of sound waves.

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The products of a chemical reaction are the substances that are changed and the chemicals on the right side of a chemical equation. The correct options are B and C.

The chemical reaction  is the reaction between two reactants which led to the formation of products.

The products are substances which forms after reaction. The reactants are the substances which are original materials.

The reactants lie on the left side and products lie on the right side of the reaction.

Thus, the correct options are B and C.

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Answer:

0.198m

Explanation:

see picture for full solution

Answer:

150   kg-m/s

Explanation:

momentum = m * v

50 * 3 = 150

Nuclear fusion reaction is mainly responsible for the cause of energy radiation from the sun.

Solar energy is created due to this nuclear fusion. The discharge of energy in the sun is 10²⁶ joules per second

There is nuclear fusion of hydrogen into helium molecules.

Takes place in solar nucleus/plasma, because this reaction can occur only in high temperature.

The special type of fusion that take place in sun is proton-proton fusion.

This kind of fusion is responsible for the cause of energy radiance and is a very efficient method of producing energy.

The 2 condition which help H-H atoms come together is large mass of the sun and the force of gravity.

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