NEED SCIENCE HELP:

Question 1:
which subatomic particle has a negative charge?
all of them
neutron
electron
proton

Question 2:
if an atom has 2 protons, 3 neutrons, and 3 electrons, what is the electrical charge of the atom?
positive
negative
neutral
varies

Question 3:
A neutral atom that gains electrons will have what kind of charge?
positive
negative
neutral
varies

Question 4:
which of the following describes the principle of the conservation of charge?
a charge is created
a charge cannot be transferred
charge cannot be created or destroyed, just transferred
charge can be destroyed

Question 5:
what law states that when there is an interaction between charged objects there is a non-contact force which acts over some distance of seperation?
faraday's law
ohm's law
coulomb's law
interaction law

Question 6:
which of the following describes an insulator?
does not allow electrons to move through it
allows electrons to move through it
is always a solid
is always a gas

Question 7:
what are most conductors made of?
wood
paper
plastic
metal

Question 8:
which of the following describes why lightening rods are put on top of houses?
insulate the house
conduct the lightening away from the house
reduce amount of static discharge
reduce the loudness of thunder

Question 9:
your computer is powered by which of the following?
electrical current
moving protons
overflow of electrons
static electricity

Question 10:
wire is used to attach a battery to a penny and is then used to light a small light bulb. the light bulb is lit due to which of the following?
static electricity
electric current
electron overflow
moving protons

Answer:

-30 and 7.5

Explanation:

Final answer:

The length of the bridge is calculated by solving the equation derived from the sound travel times through air and steel, considering the 1.4 seconds delay. Upon calculation, the bridge length is found to be 476 meters.

Explanation:

To determine the length of the bridge given the time delay of sound arrival between steel and air, we need to establish two equations to represent the travel times of sound through both mediums. The first equation represents the time taken for sound to travel through the air ([tex]t_{air}[/tex]) and the second one for the time taken through steel ([tex]t_{steel}[/tex]). We know that sound travels faster in steel than air, so we can say:

[tex]t_{air}[/tex] = distance / speed in air = L / 340 m/s

[tex]t_{steel}[/tex] = distance / speed in steel = L / 5100 m/s

The delay between the two sounds was given as 1.4 seconds, so we can set up the following equation:

[tex]t_{air} - t_{steel}[/tex] = 1.4 s

(L / 340 m/s) - (L / 5100 m/s) = 1.4 s

Now, we solve for L (the length of the bridge), which results in:

L = 1.4 s / ((1/340 m/s) - (1/5100 m/s))

Upon calculation, L = 476 m

Therefore, the length of the bridge is 476 meters.

This illusion demonstrates illusions are influenced by the situational context. Hence, option C is correct.

illusion, a distortion of a "real" sensory stimulus—that is, an interpretation that disagrees with objective "reality" as generally understood. One can say that a child is having an illusion if they believe that tree branches at night are goblins. An experience that appears to start without an outside source of stimulation is what separates an illusion from a hallucination. Both experiences are frequently and repeatedly experienced by almost everyone, although neither one is necessarily a symptom of a psychiatric disorder.

When information from "actual" external stimuli results in a false perception of an item or event, this is known as an illusion. Illusions are unique perceptual experiences.

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Final answer:

The checker shadow illusion demonstrates that illusions are influenced by perceptual constancies because our brains adjust colors based on context to maintain stable perceptions, despite variations in illumination. Option B is correct.

Explanation:

The optical illusion you’re referring to, often known as the checker shadow illusion created by Edward H. Adelson, illustrates that illusions are influenced by perceptual constancies. Square A and square B are indeed the same color, but our brain adjusts the perception based on the context, here influenced by the shadow. The brain tries to maintain color constancy, adjusting the way we perceive color under varying illumination. Therefore, the correct answer is B. Illusions are influenced by perceptual constancies.

Theories of color perception have shown that our visual system makes adjustments based on adjacent lighting conditions and the presence of edges. This processing helps to maintain a stable and consistent perception of color within our environment, which is why square B appears lighter than it really is, due to the compensating effect for the shadow cast by the cylinder.

This illusion is a profound demonstration of how our perceptual system can be tricked, indicating that our brain does not function like a passive camera but rather as an active interpreter of sensory information, projecting a consistent and stable view of the world around us.

P-waves and S-waves are seismic waves that pass through the earth's interior, spreading out from the focus in all directions. . P-waves move through solids, liquids, and gases, while S-waves travel only through solids.

Seismic waves are energy waves generated during earthquakes that travel through the Earth's interior, spreading out from the focus.

The spillage of the soup as you began moving is explained by inertia, where the soup wanted to stay in place while the bowl was moved, according to Newton's first law of motion.

When you moved with a bowl of hot soup and it spilled, the reason is related to the concepts of inertia and Newton's first law of motion. According to this law, an object at rest stays at rest, and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force. In this case, the soup wanted to stay where it was, but you moved the bowl, causing a change in motion for the bowl and not the soup, resulting in the soup spilling. Air resistance is not a significant factor in this context as it primarily affects objects moving through the air and is related to how objects with different surface areas fall at different rates due to the force exerted opposite the motion.

Yeah it is 70.4 for the Ax one and 49.3 for the Ay.

The value of Ax, the x component of the velocity of the helicopter, is approximately 70.5 km/h.

The question asks to determine the horizontal component of the velocity (Ax) of a helicopter traveling at 86.0 km/h at an angle of 35° to the ground. To find Ax, we can use the cosine component of the given velocity because the cosine of an angle in a right triangle gives the adjacent side over the hypotenuse, which corresponds to the horizontal component over the total velocity.

To find the value of Ax, we can break down the velocity vector of the helicopter into its x and y components. The x component of the velocity can be found using the formula Vx = V * cos(angle), where V is the magnitude of the velocity and angle is the angle with respect to the ground.

In this case, V = 86.0 km/h and angle = 35°. Plugging in these values, we get Vx = 86.0 km/h * cos(35°) = 70.5 km/h.

So, the value of Ax is approximately 70.5 km/h.

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Final answer:

To determine the distance the water hits the ground from the sprinkler, projectile motion principles are applied, separating the initial velocity into horizontal and vertical components and then calculating the time of flight and horizontal distance.

Explanation:

A student asked how far water will hit the ground if a sprinkler sprays water at a velocity of 6.3 m/s, aimed 25 degrees above the ground, ignoring air resistance. To solve this, we use the principles of projectile motion. First, decompose the initial velocity into horizontal (vx) and vertical (vy) components. The horizontal velocity, vx = v × cos(θ) and the vertical velocity, vy = v × sin(θ), where θ is the launch angle and v is the initial velocity.

For a projectile landed on the same level from which it was launched, the time of flight, t, is given by t = 2 × vy / g, where g is the acceleration due to gravity (9.8 m/s2). The horizontal distance, or range, R, is then R = vx × t. Substituting the given values, vx = 6.3 × cos(25°) and vy = 6.3 × sin(25°), we can find t and subsequently R.

The height of the Washington Monument can be found out by unit conversation.

Unit conversion is a way of converting some common units into another without changing their real value. for, example, 1 centimeter is equal to 10 mm,

though the real measurement is still the same the units and numerical values have been changed.

The height of the Washington Monument is 554.32 feet.

the height of the Washington Monument

We know that the height of the Washington Monument is 169 meters.

Therefore,

1 meter = 3.28 feet

169 meters = 3.28 x 169 feet

                   = 554.32 feet

Hence, the height of the Washington Monument is 554.32 feet.

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Answer:

A. People deserve what happens to them, whether good or bad.

Explanation:

The Just world hypothesis states that noble actions are rewarded and unjust actions are penalized. This hypothesis states that there is a force in the universe that restores the moral balance. This can be better understood by sayings like "what goes around comes around" and "you got what was coming to you".

So, bad people deserve something bad happening to them and good people also deserve what is happening to them.

Answer: The velocity of abject in a given time interval from 12 seconds to 15 sec is 27 m/s.

Explanation:

Displacement of the object after 12.00 seconds = 144 m

Displacement of the object after 15.00 seconds = 225 m

[tex]Velocity=\frac{\text{Change in Displacement}}{\text{Change in time}}[/tex]

[tex]Velocity=\frac{225 m-144 m}{15 s-12 s}=\frac{81 m}{3 s}=9m/s[/tex]

The velocity of abject in a given time interval from 12 seconds to 15 sec is 27 m/s.

Answer:

500 ft

Explanation: One must dim their high-beam lights when the oncoming vehicle is  500 ft away so that the oncoming driver can look clearly and drive safely. High beam light should be used at night to drive safely when one is not able to see ahead of the road clearly. Even for the most experienced drivers low visibility is an issue.

You should switch to low-beams when you come within 500 feet of an oncoming vehicle when driving at night to avoid blinding other drivers, equivalent to about 1.5 American football fields.

When driving at night, it is recommended to switch to low-beams whenever you come within 500 feet of an oncoming vehicle. This is important as it helps to prevent blinding the other driver with your vehicle's headlights, making the roads safer for everyone. To put the distance into perspective, 500 feet is approximately the length of 1.5 American football fields.

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Answer:

Galaxy

Explanation:

The astronomical body which is the highest in hierarchical order is the Galaxy.

The order of the astronomical body from the Highest to Lowest include

:Universe, galaxy, solar system, star, planet, moon and asteroid.

In the example above , the order of hierarchy from highest to lowest is Galaxy, Solar system, Star, Earth(planet).

Answer:

the answer is B decreases

Explanation:

Answer:

a = 18.19 [tex]m/s^{2}[/tex]

Explanation:

Given

Mass of the rocket m = 0.500 kg

upward force [tex]F_{up}[/tex] = 15 N

Air Resistance [tex]F_{Res}[/tex] = 1.00 N

Solution

Net force = Upward forces - downward forces

Net force = Upward force - (air resistance + weight)

[tex]F_{net} = x_{up} -(F_{Res} +mg )\\\\F_{net} = 15 -( 1 + 0.5 \times 9.81)\\\\F_{net} = 15 - (1+ 4.905)\\\\F_{net} = 9.095[/tex]

Net acceleration

[tex]a = \frac{F_{net} }{m} \\\\a = \frac{9.095 }{0.5}\\\\a = 18.19 m/s^{2}[/tex]

The table shows information about the moons of mars what is the orbital period of Deimos 1.26 days.

The amount of time a given astronomical object takes to complete one orbit around another object.

The table is missing, however I found the value of the orbital time period of Deimos on the web:

t = 30.4 hours

So, 30.4 hours. With a simple proportion we can convert it in days:

1 d: 24 h = x : 30.4 h

from which we find

x = 1.26 day

So, 1.26 days,

The table shows information about the moons of mars what is the orbital time period of Deimos 1.26 days.

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The separation of the electromagnetic and weak nuclear forces from the unified electroweak force led to distinct electromagnetic and weak forces as the universe cooled, which contributed to the conditions necessary for the formation of nucleons.

After the electromagnetic and weak nuclear forces were separated from the unified electroweak force, the universe progressed towards the age of nucleons where leptons and hadrons, including protons and neutrons, were in thermal equilibrium. The electroweak force, which combined the electromagnetic and weak nuclear forces at very high temperatures and densities present in the early universe, broke into distinct forces as the universe cooled down. This occurred shortly after the strong nuclear force had already separated from the electroweak force. Importantly, the electric and magnetic forces, despite being different aspects of the single electromagnetic force, remain unified and do not separate under cooler conditions because they rely on each other.

A loop of wire carrying a current generates a magnetic field, exerting a force and torque on the loop. The direction of this field is determined by the right hand rule and the force and torque by the equations F = I x B and t = μ × B respectively.

A loop of wire that carries a current generates a magnetic field. This magnetic field exerts a force and torque on the loop. This is especially the case in devices such as a motor.

The resulting magnetic field generated by a current-carrying loop is influenced by the right hand rule. This rule describes the direction of the magnetic field, where your thumb points in the direction of the current and your fingers wrap around the wire in the direction of the magnetic field. The density of the magnetic field lines is determined by the magnitude of the current and the size of the loop.

The force that the magnetic field applies to the loop is given by F = I x B, while the torque is given by t = μ × B. μ represents the magnetic dipole moment of the loop, and B is the strength of the magnetic field. The exact forces will depend on the specifics of the geometry and composition of the loop, as well as the strength and direction of the magnetic field itself.

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