If an object's mass is decreasing while a constant force is applied to the object, would its acceleration decrease, increase, or remain the same?

Answer:

See the explanation below

Explanation:

Ohm law is defined as the voltage is equal to the current product by the resistance.

V = I * R

where:

V = voltage [volt]

I = current [amp]

R = resistance [ohm]

Therefore for a current to exist there must be a voltage and elements that exert resistance to the passage of electrons from one point to another.

There must be a closed loop between the connection points of the source, so that the current can flow freely. Any opening of the circuit will interrupt the current flow.

Answer:

[tex]41.3 m/s^2[/tex]

Explanation:

The acceleration of an object is the rate of  change of the velocity of the object.

It is a vector quantity, so it has a magnitude and a direction.

The acceleration is given by:

[tex]a=\frac{v_f-v_i}{t}[/tex]

where

[tex]v_f[/tex] is the final velocity

[tex]v_i[/tex] is the initial velocity

t is the time taken for the velocity to change

If the acceleration is positive, the direction is the same as the initial velocity; if the acceleration is negative, the direction is opposite to the initial velocity.

In this problem:

[tex]v_i=0[/tex] is the initial velocity

[tex]v_f=124 m/s[/tex] is the final velocity

t = 3 s is the  time

So, the acceleration is

[tex]a=\frac{124-0}{3}=41.3 m/s^2[/tex]

Answer: force of gravity is 885N

Explanation:

Answer:1N

Explanation:

Mass1(m1)=90kg

Mass2(m2)=6x10^24kg

Gravitational constant(G)=6.67x10^(-11)

Distance apart(d)=6.38x10^6m

Force of gravity(f)=?

F=(Gxm1xm2)/d^2

F=(6.67x10^(-11)x90x6x10^24)/(6.38x10^6)

F=(3.6018x10^16)/(6.38x10^6)

F=1N

Force of gravity=1N

Mercury's surface has many craters because it has no atmosphere to protect it from meteoroids or comets.

Mercury's surface is riddled with craters, owing to the lack of a strong atmosphere to shield it from meteoroids and comets.

Meteoroids are small rocky or metallic objects in space that range in size from minuscule particles to bigger things with diameters of several metres.

They are generally relics of the solar system's early creation or debris expelled by asteroids or comets.

Unlike Earth, which has an atmosphere that burns up or deflects most smaller things that enter it, Mercury's thin atmosphere offers little to no protection.

Thus, meteoroids and comets can collide with its surface, causing countless craters to form over time.

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Answer:

Mass is considered as positive as it is the amount of matter and as nothing weighs less than zero. But the concept of charge in electricity can be both positive and negative because of the behaviour Observed in electrical phenomena , Conservation of charge , Interaction of charged objects and Atomic and subatomic structure

Explanation:

Understanding the nature of mass and its positivity

Mass is the amount of matter in an object. As the amount of matter cannot be less than zero. It is always greater than or equal to zero.

Exploring the concept of electric charge
Incase of electric charge it acts differently as per the system it belongs to, The following are some observation which substantiate the presence of negativity and positivity of electric charge.

a) Observations of electrical phenomena: People have observed electrical effects, such as static electricity, where objects can be attracted or repelled without physical contact. This led to the idea that there are two types of charges involved.

b) Conservation of charge: Scientists observed that charge is conserved in interactions. For example, during various experiments involving the charging and discharging of objects, the total amount of charge in a closed system remained constant. This observation supports the idea of positive and negative charges.

c) Behavior of charged objects: Through experiments, scientists found that like charges repel each other, while opposite charges attract. This behavior is consistent with the existence of positive and negative charges.

d) Atomic and subatomic structure: Detailed studies of atoms revealed that they consist of positively charged protons, negatively charged electrons, and neutral neutrons. The balance between protons and electrons determines the overall charge of an object.

Hence the mass never considered as negative and we think differently for electric charge

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Answer:16ohm

Explanation:

Potential difference(v)=24volts

Current(I)=1.5amperes

Resistance(r)=?

r=v/I

r=24/1.5

r=16ohms

Final answer:

To calculate the resistance of an electrical appliance using Ohm's Law, divide the voltage by the current. With a 24-volt source and a draw of 1.5 amperes, the appliance's resistance is 16 ohms.

Explanation:

To find the resistance of an electrical appliance, we can use Ohm's Law, which states that resistance equals voltage divided by current (R = V/I). Given that the appliance draws 1.5 amperes of current from a 24-volt source, we can calculate the resistance as follows:

R = V / I
R = 24 V / 1.5 A
R = 16 ohms

Therefore, the resistance of the appliance is 16 ohms.

Answer: The answer is force

Explanation:

Answer:

Explanation:

An air mass is a large body of air that exhibits uniform temperature and moisture characteristics and helps to determine the weather within an area. Warm air masses tend to form over oceans in warm-temperature regions of the tropics and sub-tropics, while cold air masses tend to form over land in cold-weather regions nearer the poles. The cold air masses that form at the poles move toward the equator, while the warm air masses that form at the equator move toward the poles. These air masses can undergo gradual, but significant, changes as they pass over warmer or colder land surfaces encountering different types of air. These boundary lines are called fronts.

Cold fronts occur when a cold air mass moves into warmer air. Since cold air is heavier than warm air, the incoming colder air forms a wedge that displaces the warm, and often moist, air at the surface. As the warm moist air rises, towering clouds often form releasing energy in the form of brief, intense rain storms with high winds and lightning. On the other hand, warm fronts will ride up and over cold air near the surface. These fronts can also cause clouds and rain, but they tend to be less violent and longer lasting.

Air pressure is determined by how much the air weighs in a given space. Pressure varies with altitude, with denser air residing in lower altitudes and lighter air in higher altitudes. This is caused by the Earth’s gravity—its strength decreases the farther away from the center of the planet, therefore it holds fewer molecules together in the same amount of space. Air pressure is also a function of temperature and density; differences in pressure can be an important weather maker. As air descends, it warms, inhibiting cloud formation which is often associated with good weather. Air rises in areas where the pressure at the surface is low. As it rises, the air cools and the humidity condenses to form clouds and precipitation. The centers of all storms are areas of low pressure; therefore, low pressure is often associated with bad weather.

The effective resistance of many individual resistors in series is the sum of the individual resistances.

50 items in series, each with a resistance of 15 ohms, are equivalent to a single resistance of (15 x 50) = 750 ohms.

By the way . . . If one of the little bulbs in series burns out, all the others do NOT burn out. They simply get turned off and go dark, because the current can't flow through the one that did.

The total resistance of the string of fifty 15 ohm Christmas tree lights that are connected in series is 750 ohms.

The total resistance of the series resistors is determined by adding all the componenets of the resistors together.

Rt = R1 + R2 + R3 + ----

where;

Rt = 50 x (15 ohms)

Rt = 750 ohms

Thus, the total resistance of the string of fifty 15 ohm Christmas tree lights that are connected in series is 750 ohms.

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Answer:

Thomas Young

:0

:)

Answer:

it was Young

Explanation:

Answer:

final velocity = 3504 m/s  

Explanation:

Given data:

velocity of missile = Vi = 1350m/s

angle at which missile is moving = 25degree

distance between missile and targets = 23500m

angle between target and missile=55degree

time=10.2s

To find:

Final velocity: ?

Formula:

x = Vx*t + ½*ax*t²  

Let x be the horizontal component of distance

x = ertical component of distance

t-time

ax = horizontal component of acceleration

ay = Vertical component of acceleration

Vx = horizontal component of velocity

Vy = Vertical component of velocity

Solution:

x = Vx*t + ½*ax*t²

23500m * cos55.0º = 1350m/s * cos25.0º * 10.20s + ½ * ax * (10.20s)²  

ax = 19.2 m/s²  

V'x = Vx + ax*t = 1350m/s * cos25.0º + 19.2m/s² * 10.20s = 1419 m/s  

similarly vertically:

y = Vy*t + ½*ay*t² 

23500m * sin55.0º = 1350m/s * sin25.0º * 10.20s + ½ * ay * (10.20s)²  

ay = 258 m/s²  

V'y = Vy + ay*t

     = 1350m/s * sin25.0º + 258m/s² * 10.20s = 3204 m/s  

V = √(V'x² + V'y²)

   = 3504 m/s  

Answer:

F= 2569.6 X 4.65 = 11,948.64

*Multiply the mass and the acceleration to find the force

Explanation:

Answer:11948.64kgm/s^2

Explanation:

Force=mass x acceleration

Force=2569.6 x 4.65

Force=11948.64kgm/s^2

Answer:

c

Explanation:

When a plastic lid is sprinkled with iron filings is placed over a magnet then a pattern is formed. The iron fillings arrange themselves in a way how magnetic field is present. The force of the magnet is the strongest at the two ends because more iron particles are concentrated in these areas. The magnetic lines of flux flow from one end to the other.

Answer:

Along boundaries plates are brittle and the crust fractures (breaks and cracks) forming Faults

Explanation:

Brittle material are substances that looks hard but can be easily broken by strain. Brittle deformation leads to crack and fracture of the material involve. Brittle crust lacks elastic ability , elasticity in this rocks are almost absent.

Fractures and cracks in rocks form fault. Fault is a discontinuity in rocks with an appreciable displacement. Fault is a displacement in rocks relative to one part. Generally, Fault occur when brittle rock fracture or crack, the fractured rocks move relative to one another.

Differential stress can cause rocks to fracture. If that part of the crust lacks ductility the stress on the rock will cause a brittle deformation. The brittle deformation causes fracture(breaks and cracks) leading to structure like Faults and Joints.    

Yes, it is possible that with enough time period, an ice pop will melt on a cool autumn day. As it is not cold enough to keep it in the freezing condition.

An ice cube can stay in the freezing condition when it is most often found at the temperature range above the frontal inversion which is warmer than 0°C and the temperature which is below and colder than 0°C. Icing above the warm frontal surface, in the regions where cloud temperatures are colder than 0°C, is usually confined to a layer which is less than 3,000 feet thickness.

A one inch ice cube at the 75°F room temperature (24°C) will take 45 to 60 minutes to melt at that particular temperature. A standard one ounce cube will take 90 to 120 minutes to melt at the same temperature range.

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Answer:

b.

[tex]0.45J/g\textdegree C[/tex]

Explanation:

Specific heat capacity is the amount of heat required to raise one gram of substance by one degree celcius.

It's calculated by the formula:[tex]s=\frac{q}{m\bigtriangleup T}[/tex], where q=heat and m= mass

[tex]\bigtriangleup T=20-0=20\textdegree C\\q=1004J\\m=111.6g[/tex]

Therefore:

[tex]s=\frac{1004J}{111.6g\times20\textdegree C}\\=0.45J/g\textdegree C[/tex]

Hence the iron's specific heat capacity is [tex]0.45J/g\textdegree C[/tex]

option no. c

Explanation:

A variable that depends on another variable

Answer:

B. Five processes that scientists use to answer questions

Explanation:

Answer: 6m/s²

Explanation:

Acceleration = change in velocity / time

Initial velocity = 4m/s

Final velocity = 22m/s

Time = 3s

Acceleration = (22 - 4) / 3

a = 18 / 3 = 6m/s²

Answer:

Explanation:

There are three kinds of heat transfer: conduction, convection, and radiation.

Conduction is the heat transfer by direct contact of a hot object with a cold object. It is transmitted by the vibration of the particles and not by translation motion. That is not what it is shown: the clouds are not in direct contact with the ground.

Heat transfer by convection is result of the motion of the particles in fluis, like water or air: particles move from hotter regions where they have high kinetic energy to colder regions where the particles have lower kinetic energy. Since the hotter fluids have lower density than the colder fluids, there will be a continous movement of parciles and heat. That is what is shown in the figure with the arrows.

Radiation heat transfer mechanism always occur but is only important when the temperature of the hot object is really high, like in a fire, or in a resistance to red hot, or in the Sun. The heat is radiated by infrarred radiation. That is not what is shown in the figure.

For a reaction to occur, energy must be absorbed to break chemical bonds

Explanation:

Reactions can be classified as chemical reaction, nuclear reaction, thermal reaction. So in these three reaction types, the nature of energy will only be varying.

But in order to execute a reaction, there should be breaking of existing bonds and then formation of new bonds. So for breaking of the bonds of reactants, energy should be absorbed from the surrounding.

Then the extra energy will be released after forming the products. Thus, the process of absorption of energy will lead to endothermic process and the process of releasing of energy will lead to exothermic reaction. So for a reaction to occur, energy must be absorbed to break the chemical bonds.

-- A change in speed can be either speeding up or slowing down. These effects can be caused by the gas pedal or the brake pedal.

-- Velocity is made of the car's speed and direction. These can be changed by the gas pedal, the brake pedal, or the steering wheel.

Final answer:

The two controls causing a change in car speed are the accelerator and brakes. For velocity, any change in speed or direction (affected by the accelerator and steering wheel) can alter it. An odometer measures distance traveled, while a speedometer measures instantaneous speed.

Explanation:

The two controls on a car that cause a change in speed are the accelerator (gas pedal) and the brakes. Pressing the accelerator increases the car's speed, while applying the brakes decreases it. The control that causes a change in velocity is both the accelerator and the steering wheel. This is because velocity includes both speed and direction. Thus, pressing the accelerator affects speed, which is a part of velocity, and turning the steering wheel alters the direction of the car's velocity.

Velocity is defined by both speed, which is a scalar quantity, and direction, a vector quantity. Changing either of these two or both simultaneously, results in a change in velocity. Acceleration, therefore, refers to the rate at which velocity changes over time and can occur due to a change in speed, direction, or both. For example, when a car moves from left to right at a constant velocity and the accelerator is pressed, both the velocity and acceleration vectors point rightwards. However, if the brakes are applied while the car is still moving to the right, the velocity remains directed to the right but the acceleration vector points to the left, indicating deceleration.

The car's odometer measures the total distance traveled, which is a scalar quantity, while the speedometer measures the instantaneous speed of the car, also a scalar. To illustrate the difference between average speed and the magnitude of average velocity consider a car trip where the car moves in a circle and returns to its starting point. The average speed is the total distance traveled divided by the elapsed time, whereas the magnitude of average velocity would be zero since displacement is zero after completing the loop. The two quantities are the same if the car travels in a straight line without changing direction.

Answer:True

Explanation:

if you were to swim alone and something bad happen and there was none on the beach you'd be stuck out so NEVER swim alone :)

Answer:

It is exerted in all directions at sea level, and this is because air molecules move in all directions.

At sea level, air pressure exerts force in all directions.

At sea level, air pressure exerts force in all directions. This force, known as atmospheric pressure, is the result of the weight of the air molecules above a given point.

Since air is a fluid, the air pressure at any location is distributed evenly in all directions, including upward, downward, and sideways.

This balanced distribution of air pressure is what helps maintain the stability of the Earth's atmosphere and is an essential factor in various weather phenomena and atmospheric dynamics.

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Answer:

They are quickly replenished

Explanation:

Renewable resources will never run out because they are quickly replaced by nature.

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Answer:

c

Explanation:

Answer:

Electric field lines are generated on positive charges and terminate on negative ones. The field lines of an isolated charge are directly radially outward. The electric field is tangent to these lines. Magnetic field lines, in the case of a magnet, are generated at the north pole and terminate on a south pole.

Answer:

O strong

Explanation:

From the diagram, we are dealing with strong forces.

Strong forces are one of the four fundamental forces found in nature. The other forces are gravitational forces, electromagnetism and weak interactions.

Answer:

Strong

Explanation:

The MOST likely location of the LEAST concentration of mass in an atom is at point D, which is at the radius of the atom.

1. The nucleus of an atom contains the majority of the mass and is located at the center of the atom.

2. As you move away from the nucleus towards the electron cloud, the concentration of mass decreases significantly.

3. At the radius of the atom (point D), the mass is distributed over a larger area, leading to the least concentration of mass at this point.

4. Therefore, point D, being at the outer edge of the atom, is the most likely location of the least concentration of mass in an atom.

This concept is crucial in understanding the distribution of mass within an atom and how it varies based on distance from the nucleus.

Answer:

132.43km/h

Explanation:

Velocity = displacement/time

Given

Displacement = 622.4km

Time = 4.7 hours

Therefore,

Velocity = 622.4km/4.7hrs

= 132.43km/h