a. The current in the circuit is not same across all the component so is it a parallel or series circuit​

The formula we use here is v=u+at, with the given data the answer is 5m/s², for the second part f=ma, 5000N is the answer.

Whenever an unbalanced force acts on an object acceleration occurs. The greater the net force acting on an object, the greater its acceleration, but the object's mass also affects acceleration. The smaller the mass, the greater the acceleration for a given force. Newton's second law of motion summarizes these relationships. According to this law, the acceleration of an object is equal to the net force acting on the object divided by its mass.

In first part V=U+AT, final velocity is equal to initial velocity plus acceleration multiplied time

A=(V-U)÷T

=(25-0)/5

=5m/s²

for the second part

Force is mass multiplied with acceleration

F=MxA

=1000x5

=5000N

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Answer:

b is correct!!!!!!!!!!!

The best transport electrons around an electrical circuit are connected in series. Thus, the correct answer would be option (B) are connected in series.

An alternating current (AC) circuits continuously switches the direction of electron flow back and forth, which can result in fluctuations in voltage and current.

On the other hand, in a direct current (DC) electrical circuit, the electrons flow in one direction, from the negative terminal of the power source to the positive terminal. This unidirectional flow of electrons provides a consistent and stable flow of electricity throughout the circuit.

Connecting components in series mean that they are connected end-to-end, and the current flowing through them is the same.

Overall, the best option to transport electrons around an electrical circuit are to connect in series.

Therefore, the correct answer would be option (B) are connected in series.

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Answer:

m V1 = (m + M) V2 conservation of momentum

T = time to fall 2 m

2 = 9.8 / 2 T^2    initial vertical velocity zero

T^2 = 4/9.8       T = .639 sec

Sx = V2 * .639 sec     distance traveled horizontally

V2 = 4 /.639 = 6.26 m/sec

V1 = (m + M) / m * 6.26 m/sec       from first equation

V1 = (600 + 10) / 10 * 6.26 m/s = 382 m/s

There seems to be some confusion on units

Note that 382 m/s is a reasonable answer for speed of bullet

1100 ft/sec is reasonable for a .22 cal bullet

1100 ft/sec / 3.28 ft/m = 335 m/sec

Answer:

The Tesla moves approx. 25 meters from rest before reaching 60 mi/hr

Explanation:

Given:

Initial velocity = 0 m/s

Final velocity = 26.8 m/s

Time = 1.9 seconds

Acceleration = change in velocity/time

\(a = \frac{26.8}{1.9}\)

The equation to find displacement (Δx) with given starting and final velocity, time, and acceleration is:

\(x = x_{0} + v_{0}t + \frac{1}{2} at^{2}\)

Starting position and initial velocity both equal 0, so

\(x = \frac{1}{2} at^{2}\)

\(x=\frac{1}{2} (\frac{26.8}{1.9})(1.9)^{2}\)

x = 25.46m

Rounded to the nearest whole number, x = 25m

Billy jumps upward with a velocity of 4.2 m/s off a 6m high diving board.  . Billy will take 0.43 sec  to hit the water

The branch of physics that defines motion with respect to space and time, ignoring the cause of that motion, is known as kinematics.

using equation of kinematics

v = u + g*t

sign convention

positive y direction (upward) = +

negative y direction ( downward )  = -

v = u - g*t

0 = 4.2 - ( 9.8 * t )

t = 4.2 / 9.8

t = 0.43 sec

Billy will take 0.43 sec  to hit the water

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Answer:

\( \frac{5}{6} \)

Explanation:

#a

#b

#c

#d

\(\\ \sf\bull\dashrightarrow Avg\:speed=\dfrac{Total\:Distance}{Total\:Time}=\dfrac{30}{10}=3m/s\)

#e

\(\\ \sf\bull\dashrightarrow Avg\:Speed=\dfrac{50}{5}=10m/s\)

#f

\(\\ \sf\bull\dashrightarrow Avg\:Speed=\dfrac{50+30}{10+5}=\dfrac{80}{15}=5.3m/s\)

#g

#h

#i

#j

#k

#l

\(\\ \sf\bull\dashrightarrow Avg\:velocity=\dfrac{Total\:Displacement}{Time}=\dfrac{20}{15}=1.3m/s\)

The type of electromagnetic radiation whose wavelength is efficiently observed using ground based telescopes simply is radio.

The correct answer choice is option a.

A wave can simply be defined as a disturbance which travels through a medium transferring energy from one point to another point.

However, from the context of the task given above, the simple reason why the wavelength of radio waves efficiently observed using ground based telescopes is simply because radio waves can penetrate the Earth's atmosphere.

In addition to the explanation above, there are different types of waves including transverse waves, mechanical waves, sound waves and so on and so forth.

In conclusion, we can now confirm and deduce from the explanation given above that radio waves are a form of electromagnetic radiation.

Complete question:

Which electromagnetic radiation wavelength is efficiently observed using ground based telescopes?

a. radio

b. infrared

c. visible

d. X-rays.

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To determine the position u of the mass at any time t, we can use the equation of motion for a mass-spring system without damping:n m * u''(t) + k * u(t) = 0

m = 2 lb / (32.2 ft/s^2) = 0.062 lb·s^2/ft

The spring constant k can be determined using Hooke's law:

k = F / x

where F is the force exerted by the mass and x is the displacement. In this case, the force F is the weight of the mass, and the displacement x is 6 in:

k = (2 lb) / (6 in) = (2 lb) / (6 in) * (1 ft/12 in) = 0.111 lb/ft

The equation of motion now becomes:

0.062 * u''(t) + 0.111 * u(t) = 0

To solve this second-order linear homogeneous differential equation, we assume a solution of the form u(t) = A * cos(ωt + φ).

Substituting this assumed solution into the equation of motion, we get:

-0.062 * A * ω^2 * cos(ωt + φ) + 0.111 * A * cos(ωt + φ) = 0

-0.062 * ω^2 + 0.111 = 0

Solving for ω, we get:

ω = sqrt(0.111 / 0.062) = 2.258 rad/s

From ω, we can determine the frequency f and period T:

f = ω / (2π) = 2.258 / (2π) ≈ 0.359 Hz

T = 1 / f ≈ 2.786 s

The amplitude A is determined by the initial conditions. When the mass is pulled down an additional 3 in (0.25 ft) and released, it reaches its maximum displacement, so A = 0.25 ft.

Therefore, the position u of the mass at any time t is given by:

u(t) = 0.25 * cos(2.258t)

To draw the graph of u(t), plot the position u on the y-axis and time t on the x-axis, using the equation u(t) = 0.25 * cos(2.258t). The graph will be a cosine wave with an amplitude of 0.25 ft.

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B) The water tank contains 200 kg of water. It requires 4.35 x 10^7 J of energy to heat the water from 23°C to 75°C. With a 2 kW electric water heater, it will take approximately 6.0 hours to heat the water.

First, we need to calculate the mass of water in the tank:

mass = volume * density

\(mass = 200 L * 1000 kg/m^3\)

mass = 200 kg

Next, we can calculate the energy required to heat the water:

\(Q = m * c * ΔT\)

Where m is the mass of the water, c is the specific heat capacity of water, and ΔT is the change in temperature.

ΔT = 75°C - 23°C

ΔT = 52°C

Q = (200 kg) * (4186 J/kg ∙ K) * (52°C)

\(Q = 4.348 × 10^7 J\)

We can now calculate the time required to heat the water using the power of the electric water heater:

P = Q / t

Where P is the power, Q is the energy required to heat the water, and t is the time.

t = Q / P

\(t = (4.348 × 10^7 J) / (2.0 × 10^3 W)\)

t = 21740 s

t = 6.04 hours (rounded to two decimal places)

Therefore, the answer is B) 6.0 hours.

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Answer:

Doubled

Explanation:

F = (kq1q2) / r^2

F and q (Either q1 or q2) are directly proportional, so double the charge would also double the electruc force between the charges.

The overall charge on the tetrachloridocuprate(II) ion is 2-.

The tetrachloridocuprate(II) ion, also known as CuCl4^2-, consists of a central copper atom (Cu) coordinated to four chloride ions (Cl-) in a tetrahedral arrangement. Each chloride ion carries a charge of -1, resulting in a total negative charge of -4 contributed by the chloride ligands. Since the overall charge of the tetrachloridocuprate(II) ion is 2-, it means the copper ion must have a charge of +2 to balance the negative charges from the chloride ions. This indicates that the copper ion has lost two electrons to achieve stability and form the complex ion.

Complex ions: Complex ions are formed when a central metal atom or ion is surrounded by ligands, which are usually ions or molecules that donate electrons to the metal. The overall charge on a complex ion is determined by balancing the charges of the ligands with the charge of the central metal atom or ion.

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Answer:

-10 m/s²

Explanation:

a = Δv / Δt

a = (20 m/s − 50 m/s) / 3 s

a = -10 m/s²

Answer 10 m/s²

Explanation:

a = Δv / Δt

a = (20 m/s − 50 m/s) / 3 s

a = -10 m/s²

Explanation:

Answer:

fundamental units

Explanation:

The flux of light from an isotropic source depend on the distance r from the source by  r-2.

What is isotropic source?

An isotropic source is a source of radiation or sound that emits energy in all directions equally. This type of source is usually assumed to have uniform power density in all directions, making it a simplifying assumption when analyzing a system. Examples include a point source in free space, such as a light bulb, or a sound source in a room.

The flux of light from an isotropic source (a source that radiates uniformly in all directions) decreases as the inverse square of the distance from the source. This means that the flux of light from the source decreases according to the equation F = 1/r2, where F is the flux of light, and r is the distance from the source. Therefore, the flux of light from an isotropic source decreases with the distance r from the source according to the equation F = r-2.

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The intensity of the beam is 1.21*10^7  W/m^2 and the intensity is define as number of photons per unit time.

Radiation beam is energy in the form of waves of particles. There are two forms of radiation which are  non-ionizing and ionizing.

Non-ionizing radiation has less energy than ionizing radiation; it does not possess enough energy to produce ions.

Ionizing radiation is capable of knocking electrons out of their orbits around atoms, upsetting the electron/proton balance and giving the atom a positive charge.

Alpha radiation consists of alpha particles that are made up of two protons and two neutrons each and that carry a double positive charge. Due to their relatively large mass and charge, they have an extremely limited ability to penetrate matter.

We know that,

Iabsorbed=P/A ------(1)

where P is the power and A is the area.

P= E/t-------(2)

using (2) and (1)

Iabsorbed=E/tA-----(3)

Now area,

A=πr^2 = 1.19*10^-5 m^2

putting in (3), we get

Iabsorbed = 1.09*10^7 W/m^2

Given only 90% of the beam is absorbed So,

I/100=1.19*10^-5/90

Now the intensity is,

I=1.19*10^-5*100/90

I=1.21*10^7 W/m^2.

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1) Determine the mass of the expelled CO2, 2) Calculate the acceleration of the CO2 using Newton's second law, and 3) Multiply the mass by the acceleration to obtain the force exerted by the CO2 on the system.

Newton's second law states that the force exerted on an object is equal to the mass of the object multiplied by its acceleration. To apply this principle to predict the force exerted by expelled CO2 on a system, the following steps can be followed:

Determine the mass of the expelled CO2: This can be achieved by measuring the mass of the CO2 or using known properties such as the molar mass of CO2 and the quantity of CO2 expelled.

Calculate the acceleration of the CO2: The acceleration can be determined by considering the forces acting on the CO2. In this case, the main force acting on the CO2 would be the expulsion force. Other factors such as air resistance can be taken into account if necessary.

Multiply the mass by the acceleration: Once the mass and acceleration are determined, multiply them together to obtain the force exerted by the CO2 on the system. The unit of force is typically Newtons (N).

By following this method and applying Newton's second law, it is possible to predict the force exerted by the expelled CO2 on the system. It is important to ensure accurate measurements and consider all relevant forces to obtain a reliable prediction.

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When a volleyball is tossed over a net, starting from a height of 1.5 meters above the ground, where  after reaching the top of its trajectory it returns to its original height as it falls, the ball's speed is the same as when it was tossed, but its velocity is different.

As ball 1 gets to the top of its trajectory, its velocity becomes zero.

since not stated otherwise, we assume that both balls have the same properties

If ball 2 is released at this instance, then they both will travel down at the same time interval and have initial velocity as zero.

since vertical travel is downwards, then acceleration due to gravity g is positive for both balls.

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Answer:

the current is 3.5 A

Explanation:

The computation of the current is shown below:

As we know that

Current [A] = Electrical power [W] ÷ Potential difference [V]

Now convert KW TO W = × 1000

So, the current is

= 800W ÷ 230V

= 3.5 A

Hence, the current is 3.5 A

Answer:

If lone pairs of electrons, electrons not bonded to other atoms, are located in the molecule, this will change the molecular geometry, not the electron geometry. If all the electron groups are bonded, with no lone pairs, then the electron geometry and molecular geometry are the same.

The increase in length of the brass rod is 0.02375 cm (or 2.375 mm) when the temperature changes from 20°C to 25°C.

The increase in length of the brass rod can be calculated using the formula:
ΔL = αLΔT
Where ΔL is the change in length, α is the coefficient of linear expansion, L is the original length, and ΔT is the change in temperature.
Substituting the given values, we get:
ΔL = \((19.0 * 10^{-6}/C) (25.0 cm) * (25C - 20.0C)\)
ΔL = \(2.375 * 10^{-3} cm\)
Therefore, this change in length is due to the linear expansion of the brass rod with temperature, which is characterized by the coefficient of linear expansion. The higher the coefficient of linear expansion, the more the length of the rod will change with a change in temperature.

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This question involves the concept of kinetic energy.

The student's claim is "right".

The energy possessed by a body, by the virtue of its motion is called kinetic energy. Mathematically it is given by the following formula:

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

where,

Therefore,

For the paintball:

\(K.E = \frac{1}{2}(4\ g)(90\ m/s)^2\)

K.E = 16200 J

For the pellet:

\(K.E = \frac{1}{2}(1\ g)(180\ m/s)^2\)

K.E = 16200 J

Hence, both paintball and pellet will have same kinetic energy. The student is right.

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The magnitude of the motional emf in the rod is 0.1872 when an isolated conducting rod of length 8.00 cm is oriented parallel to the x-axis. The speed of rod in y-direction is 3.90m/s.

Given an isolated conducting rod of length (l) = 8.00 cm = 8x10-2m

it moves in the y-direction at (v) = 3.90 m/s

uniform magnetic field of magnitude (B)= 0.600T

Let the magnitude of the motional emf in the rod be E

We know that E = BxlxV

E = 0.600T x 3.90m/s x 8x10-2m = 18.72x10-2

Hence the magnitude of the motional emf in the rod is 0.1872

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The electric flux through a closed surface is the total number of electric lines of force passing through the surface.

The given electric field is,

E=(4.0 N/C)^+(3.0 N/C)^​+(5.0 N/C) k^

The area vector of rectangular plane,

A=20cm^2 = 2 × 10^-3 m^2.

Its magnitude is,

|A| = 2 × 10^-3 m^2cosθ

where θ is the angle between the electric field and the area vector.

Since the rectangular plane lies in x y plane so it makes 90° angle with the direction of k^, and makes 0° angle with the direction of x^ and y^

So,

θ = 0°So,

|A| = 2 × 10^-3 m^2

cos (0°) = 2 × 10^-3 m^2

Mathematically, it is defined as:

ΦE = ∫ E⋅ d A

where E is the electric field and d A is the differential area vector.

The electric flux through a plane area is given by

ΦE = E⋅A

The electric flux through the rectangular plane is

ΦE = E⋅A=(4.0 N/C) × ^ × 2 × 10^-3 m^2 +(3.0 N/C) × ^​× 2 × 10^-3 m^2 +(5.0 N/C)k^ × 2 × 10^-3 m^2ΦE = (8.0 × 10^-3 N)^ + (6.0 × 10^-3 N)^​ + (10 × 10^-3 N)k^

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The intrinsic property that we can estimate with unaided eye, when looking at brightest stars, is temperature .

The intrinsic properties of stars are those which does not depend upon the distance of star from the earth e.g. temperature, mass, diameter, etc.

The temperature can be estimated by an unaided eye as the red stars are known to be cooler than the blue ones. The other intrinsic properties can't be predicted by unaided eye and require special optical instruments to make the observations. By the beginning of the 20th century, astronomers understood how to measure these intrinsic properties. Other than the temperature , the other important intrinsic property is the luminosity which can be determined by measuring the distance of star and its apparent brightness.

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Answer:

D, the weight

Explanation:

Normal force is mass times gravity

gravity help determines weight

Also a,b and c are all vectors and D is a scaler

Answer:

K and N

Explanation:

Ionic character depends on the electronegativity difference between the bonding elements. The greatest the elctronegativity diffference the greatest the ionic character. The electronegativity difference between K and N is the greatest among the four options as N is one of the most electronegative elements.