If you are driving and look down at the dashboard to see how fast you are going,
what quantity are you looking for?
O average velocity
average speed
instantaneous velocity
instantaneous speed

Answer:

Ions are formed by the addition of electrons to, or the removal of electrons from, neutral atoms or molecules or other ions; by combination of ions with other particles; or by rupture of a covalent bond between two atoms in such a way that both of the electrons of the bond are left in association with one of the ..

Answer:

Ions are formed when atoms lose or gain electrons, simply when electrons from the metal transfers electrons from its outermost shell( forming a positively charged metallic ion) to the outermost shell of the non-metallic atom( forming a negatively charged ion)

To determine the resistance of a resistor in a circuit using Ohm's law, we need to know the voltage across the resistor and the current flowing through it. Ohm's law states that the resistance (R) of a component is equal to the voltage (V) across it divided by the current (I) flowing through it:

R = V / I

Ohm's law is a fundamental principle in electrical engineering and physics that describes the relationship between voltage, current, and resistance in an electrical circuit. It states that the current flowing through a conductor between two points is directly proportional to the voltage across the two points, while inversely proportional to the resistance of the conductor. Mathematically, Ohm's law is expressed as:

V = I * R

Where:

V represents the voltage across the conductor (measured in volts, V)

I represents the current flowing through the conductor (measured in amperes, A)

R represents the resistance of the conductor (measured in ohms, Ω)

Learn more about ohm's law on:

https://brainly.com/question/1247379

#SPJ1

Answer:

The answer is C. 129.83 grams

The event horizon is directly related to the mass of the black hole, with larger black holes having larger event horizons.

What is Black Hole?

A black hole is an astronomical object that has collapsed to such a small size that its gravitational pull is so strong that nothing, not even light, can escape it. Black holes are formed from the remnants of massive stars that have run out of fuel and undergone a catastrophic collapse, or from the merging of two or more smaller black holes.

M87 and Ton 618 are both supermassive black holes, with masses estimated to be around 6.5 billion and 66 billion times the mass of the Sun, respectively. However, the size of their event horizons would depend not only on their mass but also on their spin and the density of the surrounding matter. It is therefore not possible to predict which black hole would be bigger without additional data and calculations.

It is worth noting that the first image of a black hole that was released in 2019 was actually an image of the event horizon of the black hole in M87, not the black hole itself. The event horizon of M87's black hole was estimated to be around 40 billion km in diameter, which is larger than the entire solar system.

Learn more about Black Hole from given link

https://brainly.com/question/6037502

#SPJ1

Firstly, we can write the equation for the electric force. It is:

By applying our values we get

Now, if we remind ourselves of Newton's law, we know that

We know the mass, and we know the Force, so we can find out the acceleration, this gives us:

Thus

Our final acceleration is 0.122 m/s^2

Answer:

600m

Explanation:

30×20 at a constant speed is 600m.

a. The deflection of a cantilever beam under an axial load and found that P = 7,638 lbs.

b.  The corresponding maximum stress in the column is 7,638 psi, using the formula for axial stress.

To solve this problem, we need to use the formula for the deflection of a cantilever beam under an axial load:

δ = PL^3 / 3EI

where δ is the deflection at the free end, P is the axial load, L is the length of the beam, E is the modulus of elasticity, and I is the moment of inertia.

First, we need to find the length L of the beam. Since point D is 0.25 in. from the geometric axis of the square aluminum bar BC, we can assume that point C is also 0.25 in. from the axis. Therefore, the length of the beam is the diagonal of a square with sides of length 1 in.:

L = √2 in.

Next, we need to find the moment of inertia I of the beam. Since the beam is a square, we can use the formula for the moment of inertia of a square about its centroid:

I = (1/12)bh^3

where b is the side length and h is the distance from the centroid to one of the sides. Since the beam has a side length of 1 in., its centroid is at the center, and h is 0.5 in.:

I = (1/12)(1 in.)(0.5 in.)^3 = 0.00208 in.^4

Now we can solve for the load P that will cause a deflection of 0.50 in. at point C:

0.50 in. = PL^3 / 3EI

P = 0.50 in. x 3EI / L^3 = (0.50 in.)(3)(10.1 x 10^6 psi)(0.00208 in.^4) / (√2 in.)^3 = 7,638 lbs

To find the maximum stress in the column, we can use the formula for axial stress:

σ = P / A

where A is the cross-sectional area of the column. Since the column is a square with sides of length 1 in., its cross-sectional area is

A = (1 in.)^2 = 1 in.^2

Therefore, the maximum stress in the column is

σ = 7,638 lbs / 1 in.^2 = 7,638 psi

In conclusion, to determine the load P for which the horizontal deflection of end C is 0.50 in., we used the formula for the deflection of a cantilever beam under an axial load and found that P = 7,638 lbs. We also found that the corresponding maximum stress in the column is 7,638 psi, using the formula for axial stress.

Know more about moment of inertia here:

https://brainly.com/question/14460640

#SPJ11  

Answer:

convection

Explanation:

Convection is a mode of heat transfer in which the molecules near the heat source get heated up, expand, become less dense, and rise upwards. The cooler molecules, on the other hand, sink to the bottom and are eventually heated up. Thus the transmission of heat by the movement of heated particles is called convection.

Answer:

A. 10Ω

Explanation:

the resistance of a heater with a current of 12 A and plugged to a voltage of 120 V is  B. 10 Ω

Resistance: This can be defined as the opposition to the flow of current in an electric circuit.

In other to solve the problem above, make use of ohm's law

Ohm's can be represented mathematically as

V = IR................... Equation 1

Where V = Voltage, I = Current, R = Resistance

From the question,

make R the subject of the equation

R = V/I.............. Equation 2

Given: V = 120 V, I = 12 A

Substitute these values into equation 2

R = 120/12

R = 10 Ω

Hence the resistance of the heater is B. 10 Ω

Learn more about resistance here: https://brainly.com/question/23608969

The most accurate definition of a behavior is that a behavior is an action that can be observed and measured (option C).

A behavior is an observable response produced by an organism.

The behavior of a person is the way the person acts or reacts to something, for example, a child throwing a tantrum is an example of bad behavior.

This suggests that an individual's behavior can be observed and measured using certain procedures.

Therefore, the most accurate definition of a behavior is that a behavior is an action that can be observed and measured.

Learn more about behavior at: https://brainly.com/question/8871012

#SPJ1

Answer:

Explanation:

The mass of the object given it's acceleration and force can be found by using the formula

\(m = \frac{f}{a} \\ \)

f is the force

a is the acceleration

From the question we have

\(m = \frac{6}{12} = \frac{1}{2} = 0.5 \\ \)

We have the final answer as

Hope this helps you

Answer:

it's green chilly or red chilly

Explanation:

I hope it's correct!

The apparent weight of the metal when completely immersed in the liquid is 16.6 N. This can be calculated using the principle of buoyancy, where the buoyant force acting on the metal is equal to the weight of the liquid displaced by the metal.

Explanation:

The weight of the metal in air is given as 20 N. In the liquid, the buoyant force acting on the metal will partially offset its weight. The buoyant force is equal to the weight of the liquid displaced by the metal.

To calculate the weight of the liquid displaced, we need to find the volume of the metal. The volume can be determined using the density of the metal:

density = mass/volume

Rearranging the formula, we have:

volume = mass/density

Let's assume the mass of the metal is 'm' kg. The volume of the metal can be calculated as:

volume = m / (density of metal)

The weight of the liquid displaced is equal to the weight of this volume of liquid, which can be calculated as:

weight of liquid displaced = volume of metal × density of liquid × g

where g is the acceleration due to gravity.

Since the weight of the liquid displaced is equal to the buoyant force acting on the metal, we can equate the two:

weight of liquid displaced = buoyant force = apparent weight of metal in liquid

Therefore, we have:

volume of metal × density of liquid × g = apparent weight of metal in liquid

Rearranging the equation to find the apparent weight:

apparent weight of metal in liquid = volume of metal × density of liquid × g

Substituting the values, we get:

apparent weight of metal in liquid = (m / (density of metal)) × density of liquid × g

Plugging in the given values for the densities and acceleration due to gravity, we can calculate the apparent weight:

apparent weight of metal in liquid = (m / (7.8 × 10³ kg/m³)) × (8.3 × 10² kg/m³) × (9.8 m/s²)

Simplifying this equation will give us the apparent weight of the metal in the liquid, which is approximately 16.6 N.The apparent weight of the metal when completely immersed in the liquid is 16.6 N. This can be calculated using the principle of buoyancy, where the buoyant force acting on the metal is equal to the weight of the liquid displaced by the metal.

The weight of the metal in air is given as 20 N. In the liquid, the buoyant force acting on the metal will partially offset its weight. The buoyant force is equal to the weight of the liquid displaced by the metal.

To calculate the weight of the liquid displaced, we need to find the volume of the metal. The volume can be determined using the density of the metal:

density = mass/volume

Rearranging the formula, we have:

volume = mass/density

Let's assume the mass of the metal is 'm' kg. The volume of the metal can be calculated as:

volume = m / (density of metal)

The weight of the liquid displaced is equal to the weight of this volume of liquid, which can be calculated as:

weight of liquid displaced = volume of metal × density of liquid × g

where g is the acceleration due to gravity.

Since the weight of the liquid displaced is equal to the buoyant force acting on the metal, we can equate the two:

weight of liquid displaced = buoyant force = apparent weight of metal in liquid

Therefore, we have:

volume of metal × density of liquid × g = apparent weight of metal in liquid

Rearranging the equation to find the apparent weight:

apparent weight of metal in liquid = volume of metal × density of liquid × g

Substituting the values, we get:

apparent weight of metal in liquid = (m / (density of metal)) × density of liquid × g

Plugging in the given values for the densities and acceleration due to gravity, we can calculate the apparent weight:

apparent weight of metal in liquid = (m / (7.8 × 10³ kg/m³)) × (8.3 × 10² kg/m³) × (9.8 m/s²)

Simplifying this equation will give us the apparent weight of the metal in the liquid, which is approximately 16.6 N.

Learn more about approximately here:

https://brainly.com/question/31695967

#SPJ11

If the majority of the objects observed had a redshift (spectral lines shifted toward the red end of the spectrum), this means these objects are all moving:  away from the milky way. The correct option to this question is A.

Redshift refers to the phenomenon where the spectral lines of an object are shifted towards the red end of the spectrum due to the Doppler effect. This occurs when the object is moving away from the observer, in this case, the Milky Way.

The majority of objects observed with redshift are moving away from the Milky Way, which supports the idea of an expanding universe.

In the context of astronomy and astrophysics, the observation of redshift in the majority of objects indicates that these celestial bodies are moving away from our galaxy, the Milky Way.

This observation provides evidence for the theory of an expanding universe, which is a fundamental concept in our understanding of the cosmos.

For more information on spectral lines kindly visit to

https://brainly.com/question/13450938

#SPJ11

The amount of work done by the car of mass 2-kg that travels 7 m is 70 J.

Work is said to be done when a force moves an object through a certain distance.

To calculate the amount of work done by the car, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, the amount of work done by the car is 70 J.

Learn more about work done here: https://brainly.com/question/26152883

#SPJ1

(a) The stationary observer detects a frequency of 343.7 Hz.

(b) The moving observer detects a frequency of 331.6 Hz as they approach each other.

(a) The equation for the Doppler shift of a sound wave is given by:

\(f_d\) = \(f_s\) (v +  \(v_d\)) / (v + \(v_s\))

where:

\(f_d\) = frequency detected by the stationary observer

\(f_s\) = frequency of the sound source (horn)

v = speed of sound in air (assumed constant and equal to 343 m/s at standard temperature and pressure)

\(v_d\) = speed of the detector (observer)

\(v_s\) = speed of the sound source (horn)

For the first part of the question, the detector (observer) is stationary, so  \(v_d\) = 0. The sound source (horn) is moving towards the detector at a speed of \(v_s\) = -31 m/s (negative sign indicates motion towards the detector). The frequency of the sound source is \(f_s\) = 305 Hz. Using these values, we can find the frequency detected by the stationary observer as:

\(f_d\) = \(f_s\) (v + \(v_d\)) / (v + \(v_s\))

\(f_d\) = 305 (343 + 0) / (343 - 31)

\(f_d\) = 343.7 Hz (rounded to one decimal place)

Therefore, the stationary observer will detect a frequency of 343.7 Hz.

(b) For the second part of the question, the detector (observer) is now moving towards the sound source (horn) at a speed of \(v_d\) = 21 m/s. The sound source (horn) is still moving towards the detector, but now at a reduced speed of  \(v_s\) = -10 m/s (since the observer is also moving towards the sound source). The frequency of the sound source is still \(f_s\) = 305 Hz. Using these values, we can find the frequency detected by the moving observer as:

\(f_d\) = \(f_s\) (v + \(v_d\)) / (v + \(v_s\))

\(f_d\) = 305 (343 + 21) / (343 + 10)

\(f_d\) = 331.6 Hz (rounded to one decimal place)

Therefore, the moving observer will detect a frequency of 331.6 Hz.

Learn more about Doppler shift

brainly.com/question/15427494

#SPJ11

Answer:

B i think

Explanation:

Answer:

I can tell you that the pressure in a gas in inversely proportional to the volume, so it should be reversible. So I think the volume of a gas is inversely proportional to the pressure.

Explanation:

Answer:

SOUND WAVES enter the ear canal and cause the eardrum to vibrate. VIBRATIONS pass through 3 connected bones in the middle ear. This motion SETS FLUID MOVING in the inner ear. ... In the brain, these impulses are CONVERTED into what we "hear" as sound.

Explanation:

I hope this help

The magnitude of the magnetic field at the point at the center of a long, straight solenoid if the solenoid carries a current of 0.300 A and has 4.00 ×10³ windings per meter would be 1.512 ×10⁻³ N/Amps m

A magnetic field could be understood as an area around a magnet, magnetic material, or an electric charge in which magnetic force is exerted. The SI unit of the magnetic field is tesla.

The magnetic field at the point at the center of a long, straight solenoid can be calculated by using the formula

B = μnI

where B is the magnetic field

μ is the Permeability constant having a value of 1.26 × 10⁻⁶ T/m

n is the number of winding per meter

I represent the current

By substituting the respective value in the formula

B=( 1.26 × 10⁻⁶ )×  (4.00 ×10³)×0.300

B =1.512 ×10⁻³ N/Amps m

Thus, the magnitude of the magnetic field at the point at the center of a long, straight solenoid would be 1.512 ×10⁻³ N/Amps m.

Learn more about the magnetic fields from here

brainly.com/question/23096032

#SPJ1

The solenoid's circular cross-sectional area has a magnetic flux of 0.0185 voltsec.

The magnetic constant, 0 in the formula, has a value of 4 x 10-7 Hm-1 or 12.57 x 10-7 Hm-1. N and I in the formula stand for the number of turns and the current flowing through the solenoid, respectively.

R = 2 cm for the solenoid's radius

L=20cm,    turns=N=500

turns per unit length = n=1,250turns/meter

current i=15A

Magnetic field through the solenoid = μ0ni=4π×10 −7 ×1250×15units

B=2.356×10−2 H

Outside of the solenoid's turns, the magnetic field is 0 and only exists in the region around r.

Flux=B×πr2 =0.0185voltsec

To know more about Magnetic flux visit:-

https://brainly.com/question/19542022

#SPJ4

Answer:

1.4 m/s/s (2.s.f)

Explanation:

The formula for centripetal acceleration is:

\(a=\frac{v^{2} }{r}\), where v is velocity and r is the radius.

In the question we are given the information that the car has a mass of 1300kg, a velocity of 2.5m/s, and a turn radius of 8.5m which are all the values we need. Therefore we can simply substitute in the values to solve the question:

\(a=\frac{3.5^{2} }{8.5} \\a=1.4\)

Therefore the centripetal acceleration of the car is 1.4m/s/s. (2.s.f)

Hope this helped!

Answer:

Mechanical advantage is a measure of the force amplification achieved by using a tool, mechanical device or machine system. Ideally, the device preserves the input power and simply trades off forces against movement to obtain a desired amplification in the output force. The model for this is the law of the lever.”

Explanation:

a person can pull approximately 60% of their own weight horizontally along the ground in good conditions. So if we need a 500 lb pull to get something done and we have a single groundman who weighs 200 lb and can therefore generate around 120 lb of pull, how can we accomplish this 500 lb pull? The simple answer is that the groundman can go find 4 or 5 good friends who are willing to drop everything and come and help him pull on the rope.

According to the given statement the skier's average speed is approximately 2.44 m/s.

The skier's initial position is at the top of a 1200 m long trail.

The trail drops a total of 270 m from top to bottom.

At the bottom of the trail, the skier is moving at a speed of 11 m/s.

To find the skier's initial velocity, we can use the equation v² = u² + 2as, where v is the final velocity, u is the initial velocity, a is the acceleration, and s is the distance traveled.

In this case, the skier starts from rest (u = 0 m/s), so the equation simplifies to v² = 2as.

Given that the distance traveled is 270 m, and the final velocity is 11 m/s, we can substitute these values into the equation to solve for the initial velocity.

11² = 2 * a * 270.

Simplifying further, we get 121 = 540a.

Dividing both sides by 540, we find that a = 121/540.

Now, we can use the equation v = u + at to find the time it takes for the skier to reach the bottom of the trail.

Given that the final velocity is 11 m/s, the initial velocity is 0 m/s, and the acceleration is 121/540 m/s², we can substitute these values into the equation to solve for t.

11 = 0 + (121/540) * t.

Simplifying further, we get 11 = 121t/540.

Multiplying both sides by 540, we find that 5940 = 121t.

Dividing both sides by 121, we find that t = 5940/121.

Finally, we can calculate the skier's average speed by dividing the total distance traveled (270 m) by the total time taken (5940/121 s).

Average speed = distance / time = 270 / (5940/121) = 14520/5940 = 2.44 m/s.

To know more about velocity visit;

https://brainly.com/question/17127206

#SPJ11

The total mechanical energy of the object at the highest point compared to its total mechanical energy at the lowest point is lesser. The correct answer is option A.

For more questions on mechanical energy

https://brainly.com/question/28154924

#SPJ8