An object with a negative charge of 1.2 mC exerts an attractive force of 13.6 N on a second charged object
0.072 m away. What is the charge and polarity (positive or negative) of the 2nd obiect?

Answer:

Potassium and iodine

Explanation: I took the quick check

Explanation:

300m÷60s=5m/s

hope this can help maybe

Answer:

The melting and boiling point of water in Fahrenheit scale is divided into 180 equal intervals, that means each division denoting 1°F.

division means their melting and boiling point is divided into 180 equal intervals that means each division indicates 1 degree F.

The rocket engine that fires against the direction a spacecraft is headed so the spacecraft slows down is called Retro engine.

Spacecraft are the space automobiles that might be capable of flying out of doors of the Earth’s ecosystem in the area. They offer us a method of transportation from the Earth to the area and objects in it. There may be numerous spacecraft that are familiar to most of people e.g. Apollo 11 which took Neil Armstrong and his group to the Moon.

Crewed Spacecraft – Crewed spacecraft are the ones that carry people to the area. There have been several crewed spacecraft to the area consisting of Vostok 1 – the first crewed spacecraft in records dispatched by way of the United States of America.

Earth-Orbit Satellites – all of the satellites, which orbit across the Earth, fall in this class. The maximum tremendous satellite in orbit on the Earth is Hubble Telescope.

Space Probe – these are unmanned spacecraft that might be fitted with medical instruments for exploring objects in space e.g. planets, Moon, and solar.

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Answer:

in the ball

Explanation:

potential energy is where an object has energy, always, but it isn't always moving, and when you drop the ball, it has kinetic energy.

Answer:

Friction is another force that energy gets "wasted" on in the dragging. Therefore, the machine gives you less mechanical advantage when too much friction is involved because it wastes energy. It also makes it less efficient!

The truck acceleration down the hill at a rate of roughly 0.8567 m/s². The acceleration can be expressed as a vector in component form, a = (0.8567 m/s², 0).

This section divides acceleration into two parts, the tangential component and the normal component. We can divide acceleration into I j, and k components in a manner similar to how we divide all vectors.

You can compute the gravitational force as follows:

F_gravity = m * g

where m is the truck's mass and g is gravity's acceleration, which is roughly 9.81 m/s².

F_gravity = 3000 kg * 9.81 m/s² = 29,430 N

F_parallel = F_gravity * sin(5°)

F_parallel = 29,430 N * sin(5°) = 2,570 N

F_net = m * a

2,570 N = 3000 kg * a

a = 2,570 N / 3000 kg = 0.8567 m/s².

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Answer:

120km

Explanation:

The water budget equation for the Creek drainage basin is: Precipitation = Stream discharge + Evapotranspiration ± Change in storage.

To develop the water budget equation for this problem, we need to account for the inputs and outputs of water in the Creek drainage basin. The water budget equation can be expressed as,

P = Q + ET ± ΔS

P = Precipitation input (mm)

Q = Stream discharge (m³/s)

ET = Evapotranspiration (mm)

ΔS = Change in storage (mm)

First, let's convert the units of the given values,

Precipitation input (P) = 550 mm

Stream discharge (Q) = 1.8 m³/s

Now, let's determine the evapotranspiration (ET) and change in storage (ΔS) terms. However, the problem doesn't provide information about ET, so we cannot calculate it accurately. The problem doesn't provide information about ΔS, so we cannot calculate it accurately.

Given these limitations, we can write the simplified water budget equation for this problem,

550 mm = 1.8 m³/s + ET ± ΔS

Please note that without information about evapotranspiration and changes in storage, we cannot fully determine the water budget for the Creek drainage basin.

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Answer:

mass m = 17.2 kg.

Explanation:

Use potential energy =m*g*h,

so,

m=potential energy/(g*h)

m=96000 J/(9.8*568) = 17.2 kg

By using the concept of cue ball, we come to know about that when a cue ball strikes an 8 ball head-on in a game of pool, the cue ball moves.

There are certain rules to play the 8-cue ball game

Hence, in a game of pool, when a cue ball strikes an 8 ball head-on the cue ball moves.

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true true tire true tire ture

please mark brainlist

The given statement is true when you look at your speedometer and it reads 60 mph this is your instantaneous speed.

In everyday language, most people use the terms speed and velocity interchangeably. In physics, however, they do not have the same meaning and are distinct concepts. One major difference is that speed has no direction; that is, speed is a scalar.

We can calculate the average speed by finding the total distance traveled divided by the elapsed time:

Average speed=Total distance=Elapsed time.

Average speed is not necessarily the same as the magnitude of the average velocity, which is found by dividing the magnitude of the total displacement by the elapsed time. For example, if a trip starts and ends at the same location, the total displacement is zero, and therefore the average velocity is zero. The average speed, however, is not zero, because the total distance traveled is greater than zero. If we take a road trip of 300 km and need to be at our destination at a certain time, then we would be interested in our average speed.

However, we can calculate the instantaneous speed from the magnitude of the instantaneous velocity:

Instantaneous speed

=|v(t)|.

If a particle is moving along the x-axis at +7.0 m/s and another particle is moving along the same axis at −7.0 m/s, they have different velocities, but both have the same speed of 7.0 m/s. Some typical speeds are shown in the following table.

We have now seen how to calculate the average velocity between two positions. However, since objects in the real world move continuously through space and time, we would like to find the velocity of an object at any single point. We can find the velocity of the object anywhere along its path by using some fundamental principles of calculus. This section gives us better insight into the physics of motion and will be useful in later chapters.

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Two potential places on Mars where water may be found are the polar ice caps and underground aquifers. This water is important for future human missions because it can be used for drinking, agriculture, and as a resource for producing rocket fuel.

The polar ice caps on Mars, located near the north and south poles, are believed to contain significant amounts of water ice. These ice caps are composed of a mixture of water ice and frozen carbon dioxide, commonly known as dry ice. The presence of water ice at the poles offers a readily accessible source of water for future missions.

It could be extracted and purified for various uses, including drinking water for astronauts, irrigation for plant growth in controlled environments, and as a raw material for producing oxygen and hydrogen for life support systems and rocket propellant.

Another potential source of water on Mars is underground aquifers. Recent scientific evidence suggests that Mars may have large reservoirs of underground water. These aquifers could be accessed by drilling beneath the planet's surface, providing a reliable and potentially abundant supply of water.

Accessing underground water sources would be crucial for sustaining long-duration human presence on Mars. It could support the establishment of habitats, provide water for agricultural activities, and serve as a vital resource for fuel production, enabling the production of rocket propellant for return missions to Earth.

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Answer:

33 hours

Explanation:

7.5 + 6.5 = 13 + 1

14 + 10 = 24

9= 6+3

24 + 6 = 30

30+3= hours

Answer:

The rms voltage across the capacitor is approximately 224.926 V.

a) To find the rms current (I) in the RLC series circuit, we can use the formula:

I = V / Z

Where V is the rms potential difference provided by the source, and Z is the impedance of the circuit.

The impedance of an RLC series circuit is given by:

Z = √(R^2 + (Xl - Xc)^2)

Where R is the resistance, Xl is the inductive reactance, and Xc is the capacitive reactance.

V = 210 V

f = 250 Hz

L = 0.35 H

C = 70 uF

VR = 45 V

First, let's calculate the reactances:

Xl = 2πfL

Xc = 1 / (2πfC)

Substituting the values:

Xl = 2π * 250 * 0.35

Xc = 1 / (2π * 250 * 70e-6)

Calculating:

Xl ≈ 549.78 Ω

Xc ≈ 114.591 Ω

Next, we can calculate the impedance:

Z = √(R^2 + (Xl - Xc)^2)

Substituting the given VR value, we have:

VR = I * R

Rearranging the equation to solve for R:

R = VR / I

Substituting the given values:

45 = I * R

Solving for R:

R = 45 / I

Substituting the values of Xl and Xc into the impedance equation:

Z = √(R^2 + (549.78 - 114.591)^2)

Substituting the value of Z into the formula for rms current:

I = V / Z

Calculating:

I ≈ 1.962331945 A

Therefore, the rms current in the RLC series circuit is approximately 1.962 A.

b) The resistance (R) in the circuit can be found using the equation:

R = VR / I

Substituting the given values:

R = 45 / 1.962331945

Calculating:

R ≈ 22.943 Ω

Therefore, the resistance in the RLC series circuit is approximately 22.943 Ω.

c) The rms voltage across the inductor (VL) can be calculated using the formula:

VL = I * Xl

Substituting the values:

VL = 1.962331945 * 549.78

Calculating:

VL ≈ 1,076.644 V

Therefore, the rms voltage across the inductor is approximately 1,076.644 V.

d) The rms voltage across the capacitor (Vc) can be calculated using the formula:

Vc = I * Xc

Substituting the values:

Vc = 1.962331945 * 114.591

Calculating:

Vc ≈ 224.926 V

Therefore, the rms voltage across the capacitor is approximately 224.926 V.

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Answer:

The answer is most likely C.

Ready-to-eat foods are stored at the top of the fridge, away from raw foods so that harmful bacteria cannot transfer from the raw food to the cooked food. Raw meat, poultry and fish in sealed containers to stop them touching or dripping onto other foods.

Answer:

Explanation:

uncovered

True! When we consider the dynamic fluid forces acting on an object, we must take into account the velocity of the object as well as the velocity of the fluid itself.

What is meant by dynamic fluid forces?

The motion of fluids is described by the branch of physics known as fluid dynamics. The dynamics of fluids are influenced by a variety of factors, including viscosity, compressibility, and turbulence. The majority of these motions can be explained by the movement of fluids, which is known as fluid mechanics.

Calculating fluid forces:

In the presence of flow, the dynamic fluid forces that act on the object will change, causing the object to experience different levels of stress. The velocity of the object and the velocity of the fluid must be considered when calculating these forces. When calculating the forces that are exerted on a submerged object, for example, it is critical to account for the velocity of the fluid as well as the velocity of the object. Therefore, it is true that when we consider the dynamic fluid forces acting on an object, we must take into account the velocity of the object as well as the velocity of the fluid itself.

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Answer:

The Coriolis Effect, in combination with an area of high pressure, causes the prevailing winds—the trade winds—to move from east to west on both sides of the equator across this 60-degree "belt."

Explanation:

if its wrong welp sorry that what i know,

The acceleration of the object at t = 2.50 s is 1.33 cm/s².The correct answer is option B.

To determine the acceleration of the object at time t = 2.50 s, we first need to find the equation that describes the motion of the object on the spring. The equation for simple harmonic motion (SHM) is given by:

x(t) = A * cos(2πt/T + φ)

Where:

- x(t) is the displacement of the object at time t.

- A is the amplitude of the motion.

- T is the period of the motion.

- φ is the phase constant.

In this case, we are given the period T = 4.60 s and the displacement x = 8.30 cm at t = 0.00 s. Since the object has zero speed at t = 0.00 s, it is at the maximum displacement, so A = 8.30 cm.

Substituting the values into the equation, we have:

x(t) = 8.30 * cos(2πt/4.60 + φ)

To find the phase constant φ, we use the initial condition x(0) = 8.30 cm:

8.30 = 8.30 * cos(2π * 0/4.60 + φ)

1 = cos(φ)

Since the cosine function equals 1 when the angle is 0 degrees, we can determine that φ = 0.

Now, we can differentiate x(t) with respect to time to find the velocity v(t) and then differentiate v(t) to find the acceleration a(t). The velocity v(t) is given by:

v(t) = dx(t)/dt = -A * (2π/T) * sin(2πt/T + φ)

Substituting the known values, we have:

v(t) = -8.30 * (2π/4.60) * sin(2πt/4.60)

At t = 2.50 s, the velocity v(2.50) is:

v(2.50) = -8.30 * (2π/4.60) * sin(2π * 2.50/4.60)

Finally, we differentiate v(t) to find the acceleration a(t):

a(t) = dv(t)/dt = -A * (2π/T)^2 * cos(2πt/T + φ)

Substituting the known values, we have:

a(t) = -8.30 * (2π/4.60)^2 * cos(2πt/4.60)

Now we can calculate the acceleration at t = 2.50 s:

a(2.50) = -8.30 * (2π/4.60)^2 * cos(2π * 2.50/4.60)

Using a calculator, we find that a(2.50) ≈ -1.33 cm/s².

Therefore, the acceleration of the object at t = 2.50 s is approximately -1.33 cm/s².

The correct answer is B) 1.33 cm/s².

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Given parameters:

Volume of water in the tank = 750litres

Length of the tank = 150cm

Breadth of tank = 50cm

Unknown:

Height of the tank = ?

To solve this problem, we must understand the concept of volume. Volume is a property of solid bodies. It is mathematically derived as:

  Volume  = length x Breadth x height

The unknown here is the height and we should go ahead to solve for it.

But the units are inconsistent.

Therefore, convert litres to cm³;

          1 litre  =  1000cm³  

         750 litres = 1000 x 750  = 750,000cm³      

Now input the parameters and solve for the height;

          750000 = 150 x  50 x height

                height  = \(\frac{750000}{7500}\)   =  100cm

Therefore, the height of the tank is 100cm

Answer: 750000 = 150 x 50 x height

height = = 100cm

Explanation:

Answer:

Install sound absorbers such as foam or acoustical panels

Explanation:

They could install some sound absorbers such as foam or acoustical panels in the walls, floors, and ceiling of the conference room.

Answer:

First of all, what is acceleration? — Acceleration is the rate of change of velocity per unit of time.

Now, we know that velocity is a vector quantity i.e we need both magnitude and direction to define it and so is acceleration. We can now say that in acceleration, the direction of motion is very important or to define acceleration we need both the magnitude of motion (here it is the speed) and its direction.

Now coming to your question. There are two possible answers to this question.

more

,Case 2 — When the body is not moving in a straight line or is constantly changing its direction. In this cas the speed still is constant but the direction is constantly changing, for example in the case of a circular motion the direction of motion constantly changes (the direction of a moving body in a circular path at any point is the direction of the tangent of the circle at that point). Hence the velocity changes as the body move along the circular or curved path.

Now, as  I earlier mentioned to define acceleration we need to know it's magnitude and it's direction, and acceleration is the rate of change of velocity per unit of time — the speed remaining constant the direction constantly changing, and the velocity changes at different time intervals or rate of change of velocity is ≠ 0 unlike in case 1. Since there is the of and a change in velocity (speed constant but the direction is changing) there is some acceleration.

To sum everything up — in the case of linear motion i.e motion in a straight line when the speed is constant and direction is not changing, velocity will be zero and hence acceleration would be zero. In case of a non-linear motion i.e motion not in a straight line, in a circle or any path where the speed is constant but the direction is constantly changing, velocity will not be zero and hence the acceleration would not be equal to zero. Either it would be greater or less than zero.

Based on adaptation, the clams that will be most likely to survive and reproduce are those that adapt best to the environmental changes.

Adaptations are special features or structures that an organism possesses which enables it to survive in its envrionment.

Depending on the environmental changes, the clams that will survive and reproduce will be the ones that adapt best.

Assuming a cycle where levels of salt water in their environment increases, the clams that will survive and reproduce are those that can withstand changes in water's salt levels.

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The clams that will be more likely to survive and reproduce are those with favorable traits in specific environmental conditions.

These two factors are usually influenced by natural selection. This means specific organisms have favorable traits and this makes it more likely for these organisms to survive and reproduce.

Only those with favorable traits are more likely to survive and reproduce but this depends on the environmental conditions.

Note: This question is incomplete because there is no information about the cycle; due to this, I answered it based on general knowledge.

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Answer:

The collision speed of the two cars is 8.8 m/s.

Answer: the answer given below

(a) Explanation: The impulse on an object is given by the change in momentum of the object. Before the collision, the bullet has momentum p1 = mv0 and the brick has momentum p2 = 0, since it is stationary. After the collision, the combined bullet-brick system has momentum p3.

Conservation of momentum requires that the total momentum before the collision is equal to the total momentum after the collision:

p1 + p2 = p3

mv0 + 0 = (m + M)V

where V is the velocity of the combined bullet-brick system after the collision. Solving for V, we get:

V = (mv0) / (m + M)

The impulse on the bullet during the collision is equal to the change in momentum of the bullet:

J_bullet = p3 - p1 = (m + M)V - mv0

Substituting the expression for V we found earlier:

J_bullet = (m + M)(mv0) / (m + M) - mv0 = 0

Therefore, the impulse on the bullet is zero during the collision.

On the other hand, the impulse on the brick during the collision is:

J_brick = p3 - p2 = (m + M)V - 0 = (m + M)(mv0) / (m + M) = mv0

Therefore, the magnitude of the impulse acting on the brick is equal to the initial momentum of the bullet, mv0, and it is in the same direction as the initial velocity of the bullet.

In summary, during the collision of the bullet and the brick, the impulse acting on the bullet is zero, while the impulse acting on the brick is mv0 in the direction of the initial velocity of the bullet.

(b) We can use the principle of conservation of momentum to solve for the velocity of the brick-bullet combination just after the collision. The total momentum of the system (bullet, brick, and Earth) is conserved before and after the collision. Initially, only the bullet has momentum, which is given by p1 = m*v0, and the momentum of the brick and Earth is zero. After the collision, the bullet becomes embedded in the brick, and the combined system of the brick-bullet has momentum p2. Since the momentum of the Earth is negligible compared to that of the bullet and brick, we can treat the system as closed and apply conservation of momentum:

p1 = p2

m*v0 = (M + m)*v

where v is the velocity of the combined system just after the collision.

Solving for v, we get:

v = (m*v0) / (M + m)

Therefore, the magnitude of the velocity of the brick-bullet combination just after the collision is:

|v| = |(m*v0) / (M + m)|

The direction of the velocity is upward, as the system swings up after the collision due to the conservation of momentum.

(c) The initial kinetic energy of the system is the kinetic energy of the bullet just before the collision, which is given by:

KE1 = (1/2)mv0^2

The final kinetic energy of the system is the kinetic energy of the combined brick-bullet system just after the collision, which is given by:

KE2 = (1/2)*(M + m)*v^2

Substituting the expression we found for v:

KE2 = (1/2)(M + m)[(mv0) / (M + m)]^2

KE2 = (1/2)(m*v0^2) / (1 + M/m)

The ratio of the final kinetic energy to the initial kinetic energy is:

KE2 / KE1 = [(1/2)(mv0^2) / (1 + M/m)] / [(1/2)mv0^2]

KE2 / KE1 = 1 / (1 + M/m)

Therefore, the ratio of the final kinetic energy of the brick-bullet combination immediately after the collision to the initial kinetic energy of the brick-bullet combination is:

KE2 / KE1 = 1 / (1 + M/m)

(d)To determine the maximum vertical position reached by the brick-bullet combination, we can use conservation of energy, assuming there is no energy loss due to friction or other dissipative forces. At the maximum height, the kinetic energy of the system is zero, and all the initial kinetic energy has been converted to potential energy due to the height above the initial position.

The initial total energy of the system is the sum of the initial kinetic energy of the bullet and the gravitational potential energy of the brick:

E1 = (1/2)mv0^2 + Mgh1

where h1 is the initial height of the brick above the ground, and g is the acceleration due to gravity.

At the maximum height, the final total energy of the system is the potential energy due to the height above the ground:

E2 = (M + m)gh2

where h2 is the maximum height reached by the brick-bullet combination above the initial position.

Since there is no energy loss, we can set the initial energy equal to the final energy:

E1 = E2

Substituting the expressions for E1 and E2 and solving for h2, we get:

(M + m)gh2 = (1/2)mv0^2 + Mgh1

h2 = [(1/2)mv0^2 + Mgh1] / [(M + m)*g]

Simplifying, we get:

h2 = (1/2)v0^2 / g + h1(M/m) / (1 + M/m)

Therefore, the maximum vertical position above the initial position reached by the brick-bullet combination is:

h2 = (1/2)v0^2 / g + h1(M/m) / (1 + M/m)

Hope this helps :)

The voltage drop across resistors r2 in volts is 6.6 volts.

Resistor is defined as an electrical component that regulates voltage and temperature. Resistors are frequently employed in electronic circuits to reduce current flow, divide voltages, impede transmission signals, and bias active parts. The resistor controls the electron flow to prevent overly rapid current from damaging the breadboard, wires, battery,

The Voltage drop can be calculated as

Give voltage of battery = 113 V

R2 has current = 1.9 A

And resistance = 4.7 ohms

Voltage = 1.9 + 4.7

             = 6.6 V

Thus, the voltage drop across resistors r2 in volts is 6.6 volts.

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Answer:

The y-axis would be labeled with displacement (m)

Explanation:

The displacement is dependent on the force applied.

Labels should have what you measure and how your units of measure.

The x-axis would be labeleed with force applied (N)

The y-axis would be labeled with displacement (m)

Answer:

Explanation:

Less than 45!

The angle that the string will make horizontally while Kinetic Energy and Potential Energy being equal of the sphere-Earth system would be:

C). Less than 45°

Given that,

Gravitational potential energy = 0

Mass = negligible

Since the body is released from the state of rest and the sphere is present its lowest point, the angle(θ) that it creates would be :

\(mgh =\) \(\frac{1}{2} mv^2\)                       (\(v = L,\) θ)

θ = less than 45°.

θ < 45°

Thus, option C is the correct answer.

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