applying newton's second law gives the equation ma = f

Answer:

The weight would be the same

Explanation:

Just like Nazim who was on a scale, I had to stand on a scale and repeat what Nazim did in order to answer this question properly.

When one foot is lifted, the surface pressure reduces compared to when both feet were on the scale. This is because lifting the fiit makes the weight distribution to be less balanced thereby reducing it. But weight would still remain the same since the scale reads weight and not the pressure.

Answer:

An egg with a thick shell.

Explanation:

Hope this helps.

Answer:

1.5 thats how long it is

Explanation:

good luck

Answer:the distance it travels in each second is decreasing

Explanation:

Answer:

9 m/s

Explanation:

speed = distance ÷ time

27÷3

=9

An electrical impulse travel through a nerve cell by dendrites to the cell body.

The fundamental functional unit of the nervous system, the neuron, is in charge of receiving, carrying, and transmitting nerve impulses.

The dendrites of the neurons receive the electrical impulses.

These electrical impulses are sent from the dendrites to the cell body where they originate.

The axon carries the impulses from the cell body to the axonal end after receiving them.

The adult human brain is estimated to have 86 billion nerve cells, also known as neurons, which are the basic functioning components of the nervous system. A nerve cell's function is to receive information from other cells and convey it to other cells. In the human body, there are three basic types of nerve cells that work together to sense and analyze information about our surroundings before evoking reactions to these stimuli.

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Answer:

they are transparent to see the content of goods inside but at the same time what cause it to be transparent is because of the fact that they are created with low-density polyethylene and polypropylene, which are transparent polymers.

Mass is conserved in a reaction if the of the initial reactant masses equals the of the masses of products

The law of conservation of mass is a fundamental principle in chemistry that states that the total mass of a closed system remains constant during a chemical reaction. This means that the mass of the reactants before a chemical reaction is equal to the mass of the products after the reaction.

The mass of the reactants before the reaction is equal to the mass of the products after the reaction. This confirms that the law of conservation of mass holds true for this chemical reaction.

This principle is essential in chemistry as it allows us to make predictions about the outcome of a reaction based on the starting materials. It also helps to ensure the accuracy of experimental measurements, as any discrepancy between the expected and observed masses can indicate an error in the experiment.

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Step 1

Diagram and free body diagram

F.B.D

Step 2

Newton's second law states a force applied to an object at rest causes it to accelerate in the direction of the force

hence, for the x -axis ( axis of the motion) we have

so,the answer is

I hope this helps you

Explanation:

\(152cm {}^{2} = 1.52m {}^{2} \\ f = p \times s = 8 \times 1.52 = 12.16\)

The change in the insects' coloration over time can be explained by evolution of insect body coloration under changing climates.

In studies on colour variety, its evolutionary causes, and the mechanical underpinnings of such variation, insects have served as important models. Recent research suggests that insect colour is adapting to the rapid climatic change. However, because a variety of biotic and abiotic factors can interact and mediate colour change, it is still difficult to determine the causes of colour variation within populations and species, as well as across space and time. Here, we discuss some of the difficulties and most recent developments in this area.

We begin by outlining the main competing theories for how climatic conditions affect insect colour variation.

Second, we examine the evidence that insect colour is now evolving adaptively in response to climate change.

Following this, we address elements that may help or hinder colour evolution in reaction to climate change. Finally, we suggest avenues for future work and identify gaps in this area of study.

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Answer:

if g=-10m/s² then the normal force is 20N

if g=-9.8m/s² then the normal force is 19.6N

Explanation:

The force due to gravity (or weight) is mass times the acceleration due to gravity.

I am going to define up as positive so gravity will be negative.

On earth the acceleration due to gravity is -9.8m/s²

We sometimes round this to -10m/s² to make the math easier.

I will do it both ways.

so we have a mass of 2kg

2kg(-10m/s²)

so the force due to gravity is -20N

because the block is not falling through the table, the table must be pushing back with the same amount of force, but in the opposite direction so we change the sign.

using -10m/s² for g, we get a normal force of 20N (Newtons)

if we use -9.8m/s², we have 2kg(-9.8m/s²)

and a force due to gravity of -19.6N

and when we flip the sign we get a normal force of 19.6N

Hope this helps!

Answer:

fire

Explanation:

burning the the oil

Answer:

The first one.

If the road becomes wet or crowded, you should ___ slow down and increase your following distance_

The safe distance between vehicles traveling in column specified by the command in light of safety requirements

The slower speed will help you save gas and avoid potential accidents. You can easily eliminate chances of rear end collision by maintaining a safe distance between your car and the vehicles ahead.

hence , a) slow down and increase your following distance is a correct option

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Explanation:

A=b+d that is the way to rewrite the equation

Answer:

To keep everyone safe

Explanation:

Without rules people could get hurt

The minimum amount of resistance that must be present in the circuit to prevent the circuit breaker from activating be  8 ohm.

A substance's ability to obstruct the flow of electrical current is referred to as resistance. It is symbolized by the capital letter R. The ohm, frequently written as a word and sometimes represented by the capital Greek letter omega, is the unit of resistance that is typically used.

The resistance of a component is one ohm when an electric current of one ampere flows through it and there is a potential difference (voltage) of one volt across it.

Given that:

Household circuits in the United States commonly run on 120 volts of electricity.

Circuit breakers are installed that open a circuit if it is drawing more than 15 amps of current.

So, the minimum amount of resistance that must be present in the circuit to prevent the circuit breaker from activating be = 120 volt/15amp = 8 ohm.

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Answer:

A theory

Explanation:

No, the person who answered above is incorrect. I just took the assessment and I can guarantee you the answer is "a theory".

-Lexi

The ramp does 480J of useful work with an efficiency of 80% .

=480J

Thus, we can conclude that the useful work done by the ramp is 480J.

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Answer:

The weight and the mass of an object are related because the weight of an object is a measure of the force exerted on the object by gravity, or the force needed to support it. w=mg

Each is a zone of decreasing water vapor content within the atmosphere. ... Each is an interface between two layers of the atmosphere. Each is a point of maximum temperature in its layer of the atmosphere.

We are given that:

We need to find:

Using equations of motion:

➙ v² - u² = 2as

➙ v = u + at

here,

From the given information, we can conclude that:

Now, using equation of motion:

➝ v = u + at

➝ v = 0 + ( 8 × 1.5 )

➝ v = 0 + 12 .0

➝ v = 12 m/s

For, acceleration :

➝ v² - u² = 2as

➝ ( 12 )² - ( 0 )² = 2 × 8 × s

➝ 144 - 0 = 16s

➝ 16 s = 144

➝ s = 144 / 16

➝ s = 9m

\( \dag\) Since, we take displacement in terms of distance in some places, therefore we can say that the height from which the object was dropped is 9 meters .

Answer:

There cannot be a force without motion and if there is no motion, then there is no force acting.

Explanation:

A force is a vector that causes an object with mass to accelerate.

Answer:

because force need motion

Explanation:

(ii) The distance covered by the antelope after 17 s

v = v₀ + a • t

25 = 0 + 2a

a = 12.5 m/s²

S = ½ • a • t² + v • t

S = ½(12.5)(2)² + 25(14.5)

S = 387.5 m

(iii) How far the cheetah and the antelope after 17 s

v = v₀ + a • t

29 = 0 + 2a

a = 14.5 m/s²

Sc = ½ • a • t² + v • t

Sc = ½(14.5)(2)² + (29)(15)

Sc = 464 m

Total distance between antelope and cheetah after 17s

∆S = S - Sc + 100

∆S = 387.5 - 464 + 100

∆S = 23.5 m

Answer:

The  value is    \(v = 47 \  m/s\)

Explanation:

From the question we are told that

   The initial  speed of the roller coaster is \(u =  13 \  m/s\)

    The  length of the hill is  \(l   = 400 \  m\)

    The  acceleration of the  roller coaster is \(a=4.0 \ m/s^2\)

Generally the acceleration is mathematically represented as

      \(a =  \frac{ v - u}{ t_f -  t_i }\)

Here  \(t_i\) is the initial time which is equal to zero

         \(v_f\) is the final velocity which is mathematically represented as

          \(v_f  =  \frac{d}{ t_f}\)

So  

     \(a =  \frac{ \frac{d}{d_f}  - u }{ t_f - t_i}\)

     \(4 = \frac{\frac{400}{ t_f}  - 13}{t_f - 0}\)

      \(4 =  \frac{400 - 13t_f}{ t_f} *  \frac{1}{t_f}\)

     \(4t_f ^2  +13f  + 400 =\)

Solving this using quadratic formula we obtain

    \(t_f =  8.5 \ s\)

     \(t_f =  -11.8 \ s\)

Generally  time cannot be negative so

       \(t_f =  8.5 \ s\)

Generally the  final velocity is mathematically represented as

         \(v = \frac{400}{8.5}\)

         \(v = 47 \  m/s\)

Answer:58 m/s

Explanation:

That’s what it says

Answer:

1440÷12=120

Explanation:

because u have to divide the mitre with the 12 m

The properties that define a mineral include being a naturally occurring solid with a definite crystalline structure and a definite chemical composition.

Therefore, the correct options are:

Naturally occurring means that the mineral is formed by natural processes, rather than being artificially created. Being a solid means that the mineral has a fixed shape and volume, and is not a liquid or gas. The crystalline structure of a mineral refers to the specific arrangement of atoms or molecules that make up its crystal lattice. Finally, the definite chemical composition of a mineral means that it has a specific set of chemical elements in a fixed proportion, which gives it distinct physical and chemical properties.

Overall, these properties help to distinguish minerals from other types of materials and allow them to be identified and studied based on their unique characteristics.

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The position of the mass as a function of time is given by x(t) = 0.4sin(3t + φ), where φ is the phase constant.

In this mass-spring system, the driving force applied to the mass is given by f(t) = 5sin(3t) N. The equation of motion for a mass-spring system without air resistance is given by the second-order linear differential equation:

\(m * d^2x/dt^2 + k * x = f(t)\)

where m is the mass (4.5 kg), k is the spring constant (0.5 N/m), and x(t) represents the displacement of the mass from the equilibrium position.

To solve the equation, we assume the solution to be of the form x(t) = A * sin(ωt + φ), where A is the amplitude, ω is the angular frequency, and φ is the phase constant. Substituting this solution into the equation of motion and comparing the coefficients of sin(ωt) on both sides, we can determine the values of A and φ.

Given that the displacement of the mass is 0.4 m, we can deduce that A = 0.4. The angular frequency ω is determined by ω = sqrt(k / m).

Plugging in the given values of k and m, we get ω = sqrt(0.5 / 4.5). With these values, we can now express the position of the mass as a function of time:

x(t) = 0.4sin(ωt + φ)

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Supplemental oxygen shall be used in that flight time in excess of 30 minutes at those altitudes.

Most plane cabins are pressurized to 8,000 feet above sea level, an altitude that lowers the amount of oxygen inside the blood by approximately 4 percentage points, researchers say.

The higher the altitude, the less oxygen there is in the air and the lower the overall air pressure is. If flights were not pressurized, passengers could be prone to various physiological illnesses. Because of this, federal policies require that all commercial flights over 8,000 feet be pressurized.

The flight crew must use supplemental oxygen for the entire duration of flight operations above a cabin pressure altitude of 14,000 feet MSL.

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