6. How much voltage would be necessary to generate 100.5 amps of current in a circuit that
has 5.7 ohms of resistance?

Answer:

When the car crashes, there is no unbalanced force acting on the person, so they continue forward (Newton's First Law). The person moves against the seat belt, exerting a force on it.

Answer:

what are semimoval joints

When blowing across the top of an empty bottle, a relatively loud sound can be created because a standing wave occurs in the bottle. A standing wave is formed when a wave interferes with its reflected wave, creating points of constructive and destructive interference. The resonance of the standing wave amplifies the sound.

As the bottle is filled with water, the pitch of the sound becomes higher. This happens due to the change in the effective length of the air column inside the bottle. When the bottle is empty, the entire length of the bottle is available for the formation of the standing wave. This means that the air column inside the bottle is longer, resulting in a lower pitch.

As water is gradually poured into the bottle, the effective length of the air column decreases. This happens because the water occupies space inside the bottle, effectively reducing the available length for the standing wave. With a shorter effective length, the wavelength of the standing wave decreases.

According to the wave equation (speed = frequency x wavelength), if the speed of sound remains constant, a shorter wavelength leads to a higher frequency and, therefore, a higher pitch. By filling the bottle with water, we are effectively shortening the length of the air column and increasing the frequency of the standing wave, resulting in a higher-pitched sound.

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Answer:

m = 664.821 kg

General Formulas and Concepts:

Physics

p = mv

Explanation:

Step 1: Define variables

m = unknown

p = 3723 kg * m/s

v = 5.6 m/s

Step 2: Find mass

3723 kg * m/s = m(5.6 m/s)

m = 664.821 kg

Answer:

300 km

Explanation:

Vi 10m/s

Vf = 40m/s

a= 2.5 m/s^2

Vf^2 - Vi^2 = 2as

S = (40^2 -10^2)/(2*2.5) = 300 Km

Answer:

Frequency

-The Frequency of a wave is the number of waves produced by a source each second

Answer:

frequency is the answer to this question and if I am wrong sorry for that

Answer:

A waiter

Explanation:

Specialization is the process of concentrating on and becoming an expert in a particular subject or skill. It can also be used to refer to the area on which someone becomes an expert. All the other options require years of gradual learning that builds up over the years for one to be considered an expert, asides for that of  a "waiter"

Waiting does not require much training, and cannot be referred to as an area of specialization.

Answer:

student

Explanation:

it's the only one that is not an example of specialization.

When a solute is actively transported across epithelium, the usual follow-up is A) water movement in the opposite direction.

Active transport refers to the process in which substances, such as ions or molecules, are moved across a cell membrane against their concentration gradient, requiring the expenditure of energy. When solute is actively transported across an epithelium, it creates an osmotic gradient across the membrane.

Osmosis is the movement of water molecules across a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration. In this case, since the solute is actively transported, it is being moved from an area of lower concentration to an area of higher concentration. As a result, water tends to move in the opposite direction, from an area of higher water concentration (lower solute concentration) to an area of lower water concentration (higher solute concentration).

Therefore, when a solute is actively transported across epithelium, the usual consequence is water movement in the opposite direction, as indicated by option A.

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To efficiently create a small rocket that attains a maximum vertical launch,  design parametres are ; desired altitude,Choose the right fuel, Calculate fuel amount,Optimize the rocket's mass,

1. Determine the desired altitude: Set a target altitude for the rocket's maximum vertical launch. This will help you choose appropriate fuel and design parameters.

2. Choose the right fuel: Research various types of rocket fuels to find the one with the best performance and efficiency for your rocket size. Consider factors such as energy density, specific impulse, and burn rate.

3. Calculate fuel amount: Use the rocket equation and your chosen fuel's specific impulse to determine the required fuel mass to reach the target altitude.

4. Optimize the rocket's mass: Design the rocket's structure to minimize its mass while maintaining strength and stability. Use lightweight materials and consider trade-offs between mass and other design parameters.

5. Design the nozzle: Adjust the nozzle's design parameters, such as throat diameter and expansion ratio, to maximize thrust and optimize the exhaust velocity for your specific fuel and altitude.

6. Optimize the stability: Design the rocket's fins and placement of the center of mass to ensure stability during the vertical launch. Proper stability will help the rocket maintain its desired trajectory.

7. Test and iterate: Perform tests on your rocket to measure its performance and make any necessary adjustments to the fuel and design parameters to improve its efficiency and achieve the maximum vertical launch.

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Answer:

The range and severity of symptoms can vary widely. Common symptoms include difficulty with communication, difficulty with social interactions, obsessive interests, and repetitive behaviors.

At any age

1. Loss of previously acquired speech, babbling or social skills.

2. Avoidance of eye contact.

3. Persistent preference for solitude.

4. Difficulty understanding other people's feelings.

5. Delayed language development.

6. Persistent repetition of words or phrases (echolalia)

7. Resistance to minor changes in routine or surroundings.

Awnser True:

Electric motors generate magnetic fields with electric current through a coil. The magnetic field then causes a force with a magnet that causes movement or spinning that runs the motor. Electric motors are used in all sorts of applications.

Explanation:

The unit called decibel (dB) is used to indicate that this ratio is multiplied by 10. The sound intensity level is not the same as sound intensity—it tells you the level of the sound relative to a reference intensity rather than the actual intensity.

If you float the ball at equilibrium in oil, the ball will have more than half of its volume submerged in the oil.

When an object floats, it moves the same volume of fluid as the object itself weighs. The displaced fluid exerts an upward buoyant force on the object, balancing its weight and allowing it to float at equilibrium.

Since oil is less dense than water, it provides less buoyant force per unit volume compared to water. To achieve equilibrium in oil, the ball would need to displace a greater volume of oil to counteract its weight. As a result, more than half of the ball's volume would need to be submerged in the oil for it to float at equilibrium.

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Complete question:

A ball is floating at equilibrium in water, and exactly half of the ball is in the water. oil is slightly less dense than water. if you float the ball at equilibrium in oil, the ball would have ______

Answer:

1. 300.15

2. 873.15

3. 221.95

1. -243.15

2. -210.85

3. 295.17

We can use the formula for the centripetal force experienced by a charged particle moving in a magnetic field and when the cosmic ray proton enters our solar system, it experiences an interplanetary magnetic field that is perpendicular to its velocity.

(a) To find the magnetic field in the region of space where the cosmic-ray proton is executing a circular orbit, we can use the formula for the centripetal force experienced by a charged particle moving in a magnetic field. The centripetal force is given by the equation:

F = qvB

Where:
F is the centripetal force,
q is the charge of the particle (in this case, the charge of a proton),
v is the velocity of the particle,
B is the magnetic field strength.

The centripetal force can also be expressed as:

F = mv²/r

Where:
m is the mass of the proton,
v is the velocity of the proton,
r is the radius of the circular orbit.

Equating the two expressions for the centripetal force, we have:

qvB = mv²/r

Rearranging the equation, we can solve for the magnetic field B:

B = mv/rq

Given the energy of the proton (13.0 MeV), we can use the relation between energy and velocity for a particle with rest mass m:

E = mc² = (γ - 1)mc²

Where:
E is the energy of the particle,
m is the rest mass of the particle,
c is the speed of light,
γ is the Lorentz factor.

The Lorentz factor can be expressed as:

γ = E/mc² + 1

Substituting the given energy and rest mass of the proton, we can calculate the Lorentz factor.

Now, we can substitute the values of m, v, and r into the equation for the magnetic field B and solve for B.

(b) When the cosmic ray proton enters our solar system, it experiences an interplanetary magnetic field that is perpendicular to its velocity. In this case, the proton will follow a helical path in the magnetic field.

To find the radius of the proton's circular orbit in this field, we can use the formula for the radius of a helical path in a magnetic field:

r = mv/|q|B

Where:
m is the mass of the proton,
v is the velocity of the proton,
|q| is the magnitude of the charge of the proton,
B is the magnitude of the magnetic field strength.

Substituting the given values of m, v, and B into the equation, we can calculate the radius of the proton's circular orbit in this field.

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Answer:

1. d

2. g

3. b

4. h

5. i

6. e

7. c

8. a

9. j

10. f

Circuits can be closed or open; if closed, by a switch perhaps, electricity can flow, and if open it cannot. When components are wired in series, they are one after the other, which is often inefficient. When components are wired in parallel, there are two separate tracks, two paths for the current to flow through. Conductors like electricity, insulators do not.

Answer:

b

Explanation:

Answer:i think its the 3rd one

Explanation:

The SI unit of wavelength of a wave is meters (m).

The average force acting on the car is 1000 N.

The definition of force in physics is: The push or pull on a massed object changes its velocity. An external force is an agent that has the power to alter the resting or moving condition of a body. It has a direction and a magnitude.

Given that: A 600-kg car is moving at 5 m/s then comes to a stop in 3 seconds.

Now according to Newton's 2nd law of motion:

Magnitude of force applied on the body = change in momentum/time interval

= I final momentum - initial momentum I/time interval

= I 0 - 600×5 I /3 N

= 10000 N

Hence, average force acting on the car is 1000 N.

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The magnetic field tilts of Earth and Uranus are considered to be the most unusual when compared to other celestial bodies in our solar system. Earth's magnetic field tilts at an angle of approximately 11 degrees with respect to its rotational axis, which is quite significant. The magnetic field is generated by the motion of molten iron in the Earth's outer core, which creates a magnetic dipole that is tilted with respect to the planet's rotation axis.

Uranus, on the other hand, has an extremely tilted magnetic field that is almost perpendicular to its rotational axis. This is believed to be due to the planet's unique orientation, as Uranus rotates on its side compared to the other planets in our solar system. The magnetic field is thought to be generated by a layer of electrically conductive fluids deep within the planet's interior, which may be influenced by the unusual orientation of Uranus.

Overall, the magnetic field tilts of Earth and Uranus are intriguing and unique in their own ways, providing valuable insights into the magnetic processes that occur within these celestial bodies.

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The magnitude and direction of the net force on a 5.0kg object is 99.8 N inward.

The centripetal acceleration of the potter's wheel is calculated using the following formula as shown below;

a = ω²r

where;

ω = 90 rpm = 90 rev/min x 2π rad/rev x 1 min / 60 s = 9.42 rad/s

r = 45 cm / 2 = 22.5 cm = 0.225 m

a = (9.42)² x (0.225 m)

a = 19.97 m/s²

The magnitude of the net force on a 5 kg object is calculated as follows;

F = ma

where;

F = (5) x (19.97)

F = 99.8 N

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The complete question is below:

a 45-cm-diameter potter's horizontal wheel spins at 90 rpm. what are the magnitude and direction of the net force on a 5.0 kg object.

Answer:

I believe it is 13,419 joules.

Explanation:

I could be very wrong, please fact check me

The change in momentum of the bowling ball of mass 8.11 kg is 159.152 kgm/s.

The change in the momentum is equal to the product of the mass and the change in the velocity.

To calculate the change in momentum of the bowling ball, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, the change in momentum of the ball is 159.152 kgm/s.

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Complete question: A force of 203 N is exerted on 8.11 -kg bowling ball over time span of 0.784 seconds. Calculate the change in momentum of the bowling ball

The magnitude of energy that is lost due to friction is 73.7Joules.

In order to accomplish work and to produce heat and light, energy must be transferred to a body or to a physical system. Energy is the quantitative attribute that does this. Energy is a preserved resource; according to the rule of conservation of energy, energy can only be transformed from one form to another and cannot be created or destroyed.

Computers, vehicles, communications, state-of-the-art medical technology, and many other things are all powered by energy. The demand for dependable and economical energy is especially pressing for emerging countries. It can be beneficial and even life-saving.

Energy required by the body is the kinetic energy

Kinetic Energy = 1 / 2 mv²

m = mass

v = velocity

For the 5.3kg moving at 6.6m/s

kE = 1/2 * 5.3 * 6.6²

KE = 1/2 * 5.3 * 43.56

KE = 115.71Joules

for the 5.3kg moving at 4m/s

KE = 42 joules

Amount of energy lost

= 115.71Joules - 42 joules

= 73.7 joule

Thus, the amount of Energy lost is73.7Joules.

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Answer:

O a force that opposes motion

The 4 equations of motion are Newton's Laws of Motion:

1. Law of Inertia: An object at rest will remain at rest and an object in motion will remain in motion unless an external force is applied to it.

2. Law of Acceleration: The rate of change of velocity of an object is directly proportional to the applied force and is in the same direction as the applied force.

3. Law of Reciprocal Actions: For every action, there is an equal and opposite reaction.

4. Law of Momentum: The total momentum of a system is conserved if the total external force acting on the system is zero.

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The equation that represents the principle of the lever balance is:

The principle of moments states when a body is in equilibrium, the sum of the clockwise moment about a point equals the sum of anticlockwise moment about that point.

A see-saw represents a balanced system of moments.

The sum of clockwise moment = The sum of anticlockwise moments.

Assuming W1 and W2 are clockwise moments and W3 and W4 are anticlockwise moments.

The equation will b:  W₁ + W₂ = W3 + W4

In conclusion, a balanced see-saw illustrates the principle of the lever balance.

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Answer:

Some slaves had to shave their hair just so they could be humilated.

Explanation:

Hi there!

Assuming the ball is hollow and spherical:

\(I = \frac{2}{3}MR^2\)

Since the ball is both rolling and moving linearly, the total kinetic energy is comprised of both ROTATIONAL and TRANSLATIONAL kinetic energy.

\(KE_T = KE_R + KE_{TR}\)

Recall the equations for both:

\(KE_{TR} = \frac{1}{2}mv^2\\\\KE_R = \frac{1}{2}I\omega^2\)

We can rewrite the rotational kinetic energy using linear velocity using the following relation:

\(\omega = \frac{v}{r}\)

\(KE_R = \frac{1}{2}(\frac{2}{3}mR^2(\frac{v^2}{R^2}))\\\\KE_R = \frac{1}{3}mv^2\)

We can now represent the situation as a summation of energies:

\(.9(KE_R + KE_{TR}) = PE\\\\.9(\frac{1}{2}mv^2 + \frac{1}{3}mv^2) = mgh \\\\.9(\frac{5}{6}mv^2) = mgh\)

Cancel out the mass and rearrange to solve for height:

\(\frac{3}{4}v^2 = gh \\\\h = \frac{3v^2}{4g}\)

Plug in the given velocity and g = 9.8 m/s².

\(h = \frac{3(8^2)}{4(9.8)} \approx \boxed{4.9 m}\)

The distance between the stations is 1320 m

We'll begin by calculating the distance travelled by the train in the first 20 s. This can be obtained as follow:

s = ut + ½at²

s = (0 × 20) + (½ × 1.1 × 20²)

s = 0 + 220

s = 220 m

The distance between the stations can be obtained as illustrated below:

Total distance = 220 + 110

Total distance = 1320

Thus, the distance between both stations is 1320 m

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