A student builds a simple circuit and a magnet under one of the circuit wires. When the switch is closed charges flow int the circuit and the wire moves

question: Please help!!!

If a bottle is being squeezed with a force of 10 Newtons and the area of the bottle is 15

squared inches. What is the pressure??

Answer:

1025.64 N/m²

Explanation:

Pressure: This can be defined as the ratio of force to area. The si unit of pressure is N/m².

From the question,

P = F/A........................ Equation 1

Where F = Force, A = Area.

Given: F = 10 Newtons, A = 15 Squared Inches = (15×0.00065) = 0.00975 m²

Substitute these values into equation 1

P = 10/0.00975

P = 1025.64 N/m²

Hence the pressure of the bottle is 1025.64 N/m²

Answer:

0.66 psi

Explanation:

Answer:

electric current refers to electrons and protons flow in the opposite direction. current is flow electrons ,but current and electron flow in the opposite direction. current flows from positive to negative and electron flows from negative to positive.

Answer:

time taken t = 6.00 seconds

the time taken to cover half a round is 6.00 seconds

Explanation:

Given;

Speed of ant v = 11 m/s

radius of Circle r = 21 m

Circumference of a circle

c = 2πr

Half a turn d = c/2 = 2πr/2 = πr

Time taken to cover distance d( half a turn);

time = distance/speed = d/v = πr/v

Substituting the values;

time =(π×21)/11 = 5.997585975035 seconds

time taken t = 6.00 seconds

It takes 6 seconds for the ant to cover half a round.

Speed is the time rate of change of distance. It is given by:

Speed = distance / time

Since the radius of the circle is 21 m:

Distance covered for one round = 2π * radius = 2π(21) = 132 m

Distance covered for half round = 132 m/2 = 66 meter

Time taken to cover half a round:

Speed = distance/time

11 = 66/time

Time = 6 seconds

It takes 6 seconds to cover half a round.

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Therefore, we cannot calculate the exact time for one cycle without more information.

The time for one cycle of a planet around the Sun is determined by its orbital period, which is related to the average distance of the planet from the Sun. In this case, if the average distance of the planet from the Sun is 21 astronomical units (A.U.), we can use Kepler's Third Law to calculate the orbital period.

Kepler's Third Law states that the square of the orbital period (T) is proportional to the cube of the average distance (r) between the planet and the Sun. Mathematically, it can be expressed as:

T^2 = k * r^3

Where k is a constant.

Given that the average distance is 21 A.U., we can set up the following equation:

T^2 = k * 21^3

To solve for T, we need the value of the constant k. However, without further information or additional equations, we cannot determine the specific value of k. Therefore, we cannot calculate the exact time for one cycle without more information.

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Answer:

Fc = 4340,93 Newton

Explanation:

Dados los siguientes datos;

Masa = 900 kg

Velocidad, V = 50 km/h a metros por segundo = (50 * 1000)/(60 * 60) = 50000/3600 = 13,89 m/s

Radio, r = 40 m

Para encontrar la fuerza centrípeta;

Fc = mv² / r

Fc = (900 * 13,89²)/40

Fc = (900 * 192,93)/40

Fc = 173637/40

Fc = 4340,93 Newton

Answer:

35N

Explanation:

force=mass×gravity

the mass is 5 and the gravity is 7 therefore:

force=7×5

=35N

I hope this helps

Explanation:

studying hard is the only thing that could make the educational system better

I think the student when he studying first time then first he want to speak Korean and study hard for that but if he try then only he can be better

Explanation:

and he or she should have interest to study if he or she have interest then only their education will be better

and if he / she didn't have interest on study then we can't do anything........

Answer:

1) Use multiple instruments to measure

2) Take several measurements

3) Control the other variables delicately  

4) Be meticulous when measuring

The amount of lateral strain in a tension member can be calculated using Poisson's ratio.

To calculate the lateral strain, we can use the equation: ε_lateral = -ν * ε_longitudinal

Where:

ε_lateral = Lateral strain

ν = Poisson's ratio

ε_longitudinal = Longitudinal strain

Poisson's ratio (ν) is a material property that describes the ratio of lateral strain to longitudinal strain when a material is subjected to an axial load. It is defined as the negative ratio of the transverse strain to the longitudinal strain.

Calculating the lateral strain involves determining the longitudinal strain, which can be calculated using the equation:ε_longitudinal = ΔL / L

Where:

ε_longitudinal = Longitudinal strain

ΔL = Change in length of the tension member

L = Original length of the tension member

Once the longitudinal strain is calculated, we can use Poisson's ratio to determine the lateral strain by multiplying the longitudinal strain by the negative value of Poisson's ratio.

It is important to note that the lateral strain is typically very small compared to the longitudinal strain in a tension member, especially for materials with a low Poisson's ratio.

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John Wheeler proposed the theory of black hole.

The final volume of the air in the compressor is approximately 7.981 cubic inches.

To determine the final volume of the air in the compressor, we can use the ideal gas law, which states that the pressure times the volume divided by the temperature is equal to a constant.

Given:

Initial pressure (P1) = 14.7 psia

Initial volume (V1) = 5 cubic inches

Initial temperature (T1) = 530 degrees Rankine

Final pressure (P2) = 100 psia

Final temperature (T2) = 640 degrees Rankine

Using the ideal gas law equation: P1 * V1 / T1 = P2 * V2 / T2

We can rearrange the equation to solve for the final volume (V2):

V2 = (P1 * V1 * T2) / (P2 * T1)

Substituting the given values into the equation:

V2 = (14.7 psia * 5 cubic inches * 640 degrees Rankine) / (100 psia * 530 degrees Rankine)

Calculating the value:

V2 ≈ 7.981 cubic inches

Therefore, the final volume of the air in the compressor is approximately 7.981 cubic inches.

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Answer:

when a car transforms...

Explanation:

Explanation:

Vivimos en un puente en lo que el diseño de coches se refiere, consecuencia de la gran disrupción de la automación que ocurriría en los próximos años.

Answer:

They have holes that are positively charged

Explanation:

There are two types of semiconductors i.e. p-type and n-type.

p-type is a type of semiconductor that is formed when a trivalent impurity is added to an intrinsic semiconductor like silicon or germanium. Boron (B), Gallium (Ga), Indium(In), Aluminium(Al) etc are trivalent impurities. Due to this combination, a large number of holes are created in it.

Hence, p-types of semiconductors have holes that are positively charged.

Answer:

an equation is balanced when the same number of each element is represented on the reactant and product sides. equations must be balanced to accurately reflect the law of conservation of matter.

Answer:

Forms over water, warm humid air mass, it's a polar air mass

Explanation: I think that's right sorry if it's not..

GL! :)

A compressed spring has more energy than a normal spring. When the spring is stretched or compressed, it works against the restoring force of the spring.

This work is stored in the spring as elastic potential energy. The more you stretch or compress the spring, the more work is done and the more energy is stored. Elastic potential energy is stored in the spring. If no inelastic deformation has occurred, the work done is equal to the stored elastic potential energy. Hooke's law states that the more you deform a spring, the more force is required to deform it further. Taking a normal compression spring as an example, the more you compress the spring, the more force you need to compress it.

The complete question is- if there are two springs one normal and one compressed. Which one has more energy stored in it if you compress both springs with the same force?.

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Answer:

60

Explanation:

The time taken for the coffee to cool from 93°C to 73°C is approximately 36.1 minutes.

The cooling law is given by:

$$\frac{dQ}{dt}=-k(T-T_0)$$

where Q is the heat in the object, t is the time taken, T is the temperature of the object at time t, T0 is the temperature of the environment and k is a constant known as the cooling constant.

We need to find the time it takes for the coffee to reach a drinking temperature of 73°C given that its initial temperature is 93°C.

Therefore, we need to find the time it takes for the coffee to cool down from 93°C to 73°C when placed in a room temperature of 18°C.

Let’s assume that the heat energy that is lost by the coffee is equal to the heat energy gained by the environment. We can express this as:

dQ = - dQ where dQ is the heat energy gained by the environment.

We can substitute dQ with C(T-T0) where C is the specific heat capacity of the object.

We can rearrange the equation as follows:

$$-\frac{dQ}{dt}=k(T-T_0)$$

$$-\frac{d}{dt}C(T-T_0)=k(T-T_0)$$

$$\frac{d}{dt}T=-k(T-T_0)$$

The differential equation above can be solved using separation of variables as follows:

$$\frac{d}{dt}\ln(T-T_0)=-k$$

$$\ln(T-T_0)=-kt+c_1$$

$$T-T_0=e^{-kt+c_1}$$

$$T=T_0+Ce^{-kt}$$

where C = e^(c1).

We can now use the values given to find the specific value of C which is the temperature difference when t=0, that is, the temperature difference between the initial temperature of the coffee and the room temperature.

$$T=T_0+Ce^{-kt}$$

$$73=18+C\cdot e^{-0.09t}$$

$$55=C\cdot e^{-0.09t}$$

$$C=55e^{0.09t}$$

$$T=18+55e^{0.09t}$$

We can now solve for the value of t when T=93 as follows:

$$93=18+55e^{0.09t}$$

$$e^{0.09t}=\frac{93-18}{55}$$

$$e^{0.09t}=1.3636$$

$$t=\frac{\ln(1.3636)}{0.09}$$

Using a calculator, we can find that the time taken for the coffee to cool from 93°C to 73°C is approximately 36.1 minutes.

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Answer:  Mass

Explanation:

To determine the total distance traveled when t = 9.00 s, we need to find the displacement between the initial and final positions of the particle.

Given:
s = t³ - 6t² - 15t + 7

To find the initial position, substitute t = 0:
s(0) = (0³) - 6(0²) - 15(0) + 7
s(0) = 7 ft

To find the final position, substitute t = 9.00 s:
s(9) = (9³) - 6(9²) - 15(9) + 7
s(9) = 729 - 486 - 135 + 7
s(9) = 115 ft

The displacement between the initial and final positions is:
Δs = s(9) - s(0)
Δs = 115 - 7
Δs = 108 ft

Therefore, the total distance traveled when t = 9.00 s is 108 ft.

To calculate the average velocity at time t = 9.00 s, we need to find the instantaneous velocity at that time.

The velocity function is the derivative of the position function:
v = ds/dt

Given:
s = t³ - 6t² - 15t + 7

Differentiating s with respect to t:
v = ds/dt = 3t² - 12t - 15

Substitute t = 9.00 s:
v(9) = 3(9²) - 12(9) - 15
v(9) = 243 - 108 - 15
v(9) = 120 ft/s

Therefore, the particle's average velocity at time t = 9.00 s is 120 ft/s.

To calculate the average speed at time t = 9.00 s, we need to find the total distance traveled divided by the time taken.

Average speed = total distance / time

Given:
Total distance = 108 ft
Time = 9.00 s

Average speed = 108 ft / 9.00 s
Average speed = 12 ft/s

Therefore, the particle's average speed at time t = 9.00 s is 12 ft/s.

Total distance traveled when t = 9.00 s: 108 ft
Particle's average velocity at time t = 9.00 s: 120 ft/s
Particle's average speed at time t = 9.00 s: 12 ft/s
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Answer:

Biconcave lens or Diverging lens.

Virtual Image

0.75cm on the same side as the object.

Explanation:

Biconcave lens. Biconcave lenses form all images at the same side as the object. Although a biconvex lens can exhibit the same phenomena, it only occurs when the object is in between the focal point and the optical center (object distance<focal length). From the given parameters, the object distance is 3cm and the which is obviously greater than the focal length.

So, we conclude that the lens used is a biconcave lens.

A concave lens (biconcave, plano-convex,) alway produces a virtual image.

Let u, v and f represent the object distance, image distance and focal length of the lens respectively.

In this case,

u = 3cm

v = ?

f = -1cm ( f is negative for diverging lenses)

1/f = (1/u) + (1/v)

-1 = (1/3) + (1/v)

v = -3/4cm = -0.75 cm

The negative sign means that it's a virtual image.

The objective's focal length is roughly -15.31 cm. The converging lens objective is indicated by the negative sign.

The formula for compound microscope magnification can be used to get the focal length of the objective:

M = -(f₀ / fₑ)× (1 + d / f₀)

Where:

M = Magnification of the compound microscope = -4515 (negative sign indicates an inverted image)

f₀ = Focal length of the objective

fₑ = Focal length of the eyepiece = 2.6 cm

d = Distance between the objective and eyepiece = 16 cm

f₀ = -(M * fₑ) / (M + (d / fₑ))

Putting all the given values:

M = -4515

fₑ = 2.6 cm

d = 16 cm

f₀ = -((-4515) × 2.6) / (-4515 + (16 / 2.6))

f₀ ≈ -15.31 cm

Therefore, the objective's focal length would be roughly -15.31 cm and the converging lens objective will be indicated by the negative sign.

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The graph shown in the first option nicely plots the lion's and gazelle's velocities as a function of time, so option A is the correct answer.

Velocity is the rate of change of displacement over time.

As mentioned in the problem of running at a constant speed towards a gazelle with a standing lion as shown above.

So option A is correct.

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Answer:

imma try nd help cuz i havent seen anybody answer so

1.sara

2.same for both

3.tom

Explanation:

If you shine a green light on a white sheet of paper, the paper would appear to be green. This is because an object appears to be a certain color because it reflects that color of light back to our eyes.

When white light, which contains all the colors of the visible spectrum, hits a white sheet of paper, the paper reflects all those colors back to our eyes, making it appear white. However, if you shine a green light on the paper, the paper will absorb all the colors of the visible spectrum except for green. The green light will be reflected back to our eyes, making the paper appear green. Therefore, the correct answer to this question is d) Green.
The color that a white sheet of paper would appear when you shine a green light on it is d) Green.

When a green light is shone onto a white sheet of paper, the paper appears green because it reflects the green light. White objects reflect all wavelengths of visible light, so when only green light is present, it only has green light to reflect. Therefore, the paper appears green to our eyes.

In summary, the white paper appears green under green light because it reflects the green light and no other wavelengths are present to create a different color.

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The speed of the projectile when it strikes the ground below is approximately 620.6 m/s.

We can use the kinematic equations of motion to solve this problem.

First, we can find the time it takes for the projectile to hit the ground using the vertical motion equation:

y = vi*t + (1/2)at²

where y is the vertical displacement (in this case, the initial height of the cliff), vi is the initial vertical velocity (in this case, zero), a is the acceleration due to gravity (-9.8 m/s^2), and t is time.

Plugging in the values, we get:

265 m = 0t + (1/2)(-9.8 m/s²)*t²

Solving for t, we get:

t = √((2*265 m) / (9.8 m/s²)) = 8.25 s

Next, we can find the horizontal displacement of the projectile using the horizontal motion equation:

x = v*t

where x is the horizontal displacement, v is the initial horizontal velocity, and t is time.

Since the initial velocity is at a 45-degree angle, we can break it down into its horizontal and vertical components:

v_initial_x = v_initial*cos(45 degrees) = 350 m/s * cos(45 degrees) = 247.5 m/s

v_initial_y = v_initial*sin(45 degrees) = 350 m/s * sin(45 degrees) = 247.5 m/s

The horizontal displacement can now be calculated as:

x = v_initial_x * t = 247.5 m/s * 8.25 s = 2041.9 m

Finally, we can find the speed of the projectile when it hits the ground using the total velocity equation:

v_final² = v_initial_x² + v_initial_y² + 2ay

where v_final is the final velocity, v_initial_x and v_initial_y are the horizontal and vertical components of the initial velocity, and y is the vertical displacement.

Plugging in the values, we get:

v_final² = (247.5 m/s)² + (350 m/s)² + 2*(-9.8 m/s²)*(265 m)

Solving for v_final, we get:

v_final = √((247.5 m/s)² + (350 m/s)² + 2*(-9.8 m/s²)*(265 m)) = 620.6 m/s

Therefore, the speed of the projectile when it strikes the ground below is approximately 620.6 m/s.

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Answer:

A. an apple falling from a tree

Explanation: