**Answer:**

The average force exerted on the car during this time is **5,943 N**

**Explanation:**

Given;

mass of the car, m = 849 kg

initial velocity of the car, u = 0

time of motion of the car, t = 5.00 s

final velocity of the car, v = 35 m/s

The average force exerted on the car during this time is given by;

[tex]F = ma \\\\F = \frac{m(v-u)}{t}\\\\F = \frac{849(35-0)}{5}\\\\F = \frac{849(35)}{5}\\\\ F = 849*7\\\\F = 5,943 \ N[/tex]

Therefore, the average force exerted on the car during this time is **5,943 N**

Answer:

5943N

Let's say (+x) = eastward

Average horizontal acceleration

ax = vx -v0x/5.00s

= 35.0m/s-0/5.00s

= +7.09m/s

From here we apply the second law of newton

During this period average horizontal force acting on car

Summation x = max = (849kg)(+7.09m/s²)

= 5943N

+5.943x10³N

= 5.94kN east ward.

A car traveling at 32.4 m/s skids to a stop in 4.55 s. Determine the skidding distance of the car (assume uniform acceleration).

**Answer:**

x = 73.71 [m]

**Explanation:**

In order to solve this problem we must use two formulas of kinematics. It is important to make it clear that these formulate are for uniformly accelerated motion, i.e. with constant acceleration.

[tex]v_{f }= v_{i}-(a*t)[/tex]

where:

Vf = fnal velocity = 0

Vi = initial velocity = 32.4 [m/s]

t = time = 4,55 [s]

a = acceleration or desacceleration [m/s^2]

0 = 32.4 - (a*4.55)

a = 7.12 [m/s^2]

**Note: it is important to clarify that the negative sign in the above equation is because the car stops and decreases its speed to zero, thus its final velocity is equal to zero.**

Now using the following equation:

[tex]x = x_{o} + (v_{i}*t)-(\frac{1}{2} )*a*t^{2}[/tex]

where:

xo = initial distance = 0

x = final distance [m]

Therefore we have:

x = 0 + (32.4*4.55) - (0.5*7.12*4.55^2)

x = 73.71 [m]

A football team lost 3 yards on their first play. On the second play, 10 yards were gained. On the third play the quarterback got tackled behind the line of scrimmage and lost 6 yards. What was their net gain or loss after the three plays?

+1yd

Explanation:

Kfgjjh

**Answer:**

+1 YD

**Explanation:**

-3 + 10 - 6 = 1

if a ramp is 12 meters long has a mechanical advantage of 6 whats its height brainly HELPP!

**Answer:**

h = 2 m

**Explanation:**

Mechanical advantage of a ramp is given by :

**MA = length of incline/height of incline**

Length of the ramp, l = 12 m

MA = 6

We need to find the height of the ramp.

So,

height of ramp = length of incline/MA

h = 12/6

**h = 2 m**

**So, the height of the ramp is 2 m.**

Two protons are a distance 3 10-9 m apart. What is the electric potential energy of the system consisting of the two protons

**Answer:**

**The electric potential energy of the system is 7.87x10⁻²⁰ J.**

**Explanation:**

The electric potential energy is given by:

[tex]E = \int{Fdr} = \frac{Kq_{1}q_{2}}{r}[/tex]

Where:

q₁ = q₂ is the charge of the protons = 1.62x10⁻¹⁹ C

r is the distance = 3x10⁻⁹ m

K: is the electrostatic constant = 9x10⁹ Nm²/C²

[tex] E = \frac{Kq_{1}q_{2}}{r} = \frac{9\cdot 10^{9} Nm^{2}/C^{2}*(1.62 \cdot 10^{-19} C)^{2}}{3\cdot 10^{-9} m} = 7.87 \cdot 10^{-20} J [/tex]

**Therefore, the electric potential energy of the system is 7.87x10⁻²⁰ J.**

I hope it helps you!

The **electric potential energy** of the **system** should be **7.87x10⁻²⁰ J.**

SInce We know that

fdr = kq1q2/r

Here

q₁ = q₂ i.e. is the **charge** of the **protons** = 1.62x10⁻¹⁹ C

r should be the **distance **= 3x10⁻⁹ m

K should be the **electrostatic constant **= 9x10⁹ Nm²/C²

Now electric potential energy should be

= (9x10⁹ Nm²/C² * 1.62x10⁻¹⁹ C) / 3x10⁻⁹ m

= 7.87x10⁻²⁰ J.

hence, The **electric potential energy** of the **system** should be **7.87x10⁻²⁰ J.**

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a Venus fly trap is an......... plant.

**Answer:**

A Venus flytrap is a perennial carnivorous plant.

I hope it helps

**plant that eats meat**

a box with a Constance velocity has a 5 N of force applied to it from all sides and direction. what will happen to the motion of the box as result?

A-the object will come to rest

b-the velocity of the object will remain the same

c- the velocity of the object will decrease

d- the velocity of the object will increase

**Answer:**

b-the velocity of the object will remain the same

**Explanation:**

Forces from opposite sides cancel each other, so there is no net force on the box that would affect its motion. The velocity of the box will remain unchanged.

__

(The box may be crushed, but it will continue in the same direction at the same speed.)

**Answer:**

**b the velocity of the object will remain the same **

**Explanation:**

use your brain:)

Suppose a signal from a vibrating motor is to be sampled discretely with a digital data acquisition system to determine the RPM of the motor. It is known that the maximum possible RPM is 1800. What is the minimum sampling frequency (in Hz) with which the signal can be sampled in order to measure the RPM of the motor

**Answer:**

**f > 60 Hz**

**Explanation:**

[tex]f = \frac{1800 rev}{min} * \frac{1 min}{60 sec} = 30 Hz[/tex]

Per Nyquist, fs > 2*30 Hz ⇒ **fs > 60 Hz**

On a hot day, you sit on the edge of a pool and dip your feet into the water, causing changes to occur that are related to the physical and thermal properties of your feet and of the water. Select the statements that accurately describe what is happening, in terms of the heat and temperature of the objects and substances. There may be more than one accurate statement.

The **true statements** are;

Heat from your feet **raises **the temperature of the water.

Your feet** transfer heat **into the surrounding water, reducing the temperature of your feet. B and C

The term** thermal changes** has t do with the changes in the heat properties of the substance. We know that when you put your leg in water there is a **thermal exchange** between the water and your leg.

Owing to the fact that heat is transferred from your leg to the water, your leg will **feel cool** while the temperature of the water will **increase **slightly.

Having said all these, the **true statements** are;

Heat from your feet **raises **the temperature of the water.

Your feet** transfer heat **into the surrounding water, reducing the temperature of your feet.

Learn more about **thermal exchange**:https://brainly.com/question/7230756

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Missing parts;

On a hot day, you sit on the edge of a pool and dip your feet into the water, causing changes to occur that are

related to the physical and thermal properties of your feet and of the water. Select the statements that

accurately describe what is happening, in terms of the heat and temperature of the objects and substances.

There may be more than one accurate statement.

A. Cold from the water reduces the temperature of your feet.

B. Heat from your feet raises the temperature of the water.

C. Your feet transfer heat into the surrounding water, reducing the temperature of your feet.

D. Cold from the water moves into your warm feet.

What is Triangle ill send a picture

A triangle is just a shape...

It’s a shape lol

.......

.......

I WILL GIVE BRAINLIEST

In which of the following locations would most likely find parenchyma cells? Leaves roots flowers bark

**Answer:**

I would guess its leaves

**Answer:**

Leaves

**Explanation:**

Help me please :)

Answer the following questions to explain the relationship between electricity and magnetism.

• What are the critical components of an electromagnet and what purpose do they each serve?

• How can the strength of an electromagnet be changed?

• Why is an electromagnet considered a temporary magnet?

Answer the following questions about motors and generators.

• What components are needed for a generator to produce electric current?

• Describe motors and generators in terms of energy input and output.

HELP MEEEEEEEE

Decide if the following statements would be found in the Motor or Generator. Answers can be found at the end of the 3.07 Reading.

Statement Motor or Generator?

**Answer:**

R u from k12?? i am XD add me on discord my username is Hot Boy#1650

**Explanation:**

Type your response in the box.

Different kinds of substances have different properties. Compare and contrast the electrical properties of salts, acid , metals

**Answer:**

salts do not conduct electricity. unless u try to dissociate its ions,it cannot.

metals are good conductors of electricity.

acids also conduct electricity if you dissociate them into ions.

Why is our (a person's) gravitational pull NOT as strong as the Earth's gravitational pull

on us?

Gravity doesn't act on us

The Earth is closer to us than the Moon

Our mass doesn't change so the pull is really the same

We are much smaller than the Earth.

**Answer:With gravity, two things with mass will want to move toward each other. However, we humans don't feel our gravity pulling on another person because it's not very big, but we do all feel the pull of Earth's gravity all the time - we're not all floating in the air, because that would be happening without Earth's gravity!**

**Explanation:**

BRAINLIEST. Agraph is probelow. The graph shows the speed of a car traveling east over a 12 second period. Based on the information in the graph, it can be

that in the first second

Answer:speeding up constantly

Explanation:

The **graph **between the **time **and the **speed **of the car shows that the speed is **increasing **constantly, so, option C is **correct**.

A **moving **object's rate of change in **distance **traveled is measured as **speed**. Speed is a **scalar**, which implies it is a measurement with a magnitude but no **direction**.

A thing that moves quickly and with high speed, covering a lot of ground in a short time. On the other hand, a slow-moving object traveling at a low speed covers a comparatively small distance in the same amount of time. An object with zero speed does not move at all.

**Given**:

The graph shows the speed of a car traveling east over a 12-second period,

As you can see from the graph, at time t = 0 sec the speed is 10 m/s,

At t = 3 sec, the speed = 15.3 m/s

At t = 6 sec, the speed = 20.3 m/s

Thus, speed is increasing constantly.

To know more about **Speed**:

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What is your role in motivating yourself?

**i typically focus on motivating others.. i wanna be a motivational speaker someday. tbh if anyone needs anyone to talk to id be happy to listen and i would give the best advice i can. heres my discord: ionknow22#2868**

Pressure and temperature ______ with depth below Earth’s surface.

**Answer:**

Pressure increases as you move deeper below earth's surface.

Tempurature increases as you move deeper below earth's surface.

Hope this helps!

**Explanation:**

block of mass m sits at rest on a rough inclined ramp that makes an angle with the horizontal. What must be true about normal force F on the block due to the ramp

Answer:

Explanation:

For a body on a ramp with mass m, the forces acting on the body along the vertical component are the weight and the normal reaction.

The weight of the body acts in the negative y direction while the normal reaction acts in the positive y direction

Taking the sum of forces along the y component

Sum Fy = -W+R = ma

Since acceleration is zero

-W+R = m(0)

-W+R = 0

-W = -R

W = R

Hence the Normal reaction force acting on the on the body is equal to normal force

During which process of the water cycle does water change from a gas to liquad

Condensation is the process by which water vapor in the air is changed into liquid water. Condensation is crucial to the water cycle because it is responsible for the formation of clouds.

In each of the given pairs, choose which element will have the bigger atom. Give reasons for your choice. (a) Mg (atomic number 12) or Cl (atomic number 17) (b) Na (atomic number 11) or K (atomic number 19)

**Answer:**

Mg (atomic number 12)

K (atomic number 19)

**Explanation:**

The size of an atom is estimated in terms of its atomic radius.

The atomic radius is taken as half of the inter-nuclear distance between two covalently bonded atoms of non-metallic elements or half of the distance (d) between two nuclei in the solid - state of metals.

Across a period, atomic radii decrease progressively from left to right. This is due to the progressive increase in the nuclear charge without increase in the number of electronic shells. Down a group, atomic radii increase progressively due to the successive shells of electrons being added which have been compensated for by the increase in nuclear charge.**Cl is further right of Mg in the third period**

**K is below Na in the first group**

Who ever answers first get Brainliest!

How is power passed down in a dynasty?

through a family bloodline

through a religious council

through an arranged marriage

through a military commander

Through a family bloodline

Your answer should be Through a family bloodline ;)

Hope this helps ..

Hope this helps ..

A car starts from rest and accelerates for 7.2 s with an acceleration of 1.4 m/s2. How far does it travel? Answer in units of m.

**Answer:**

xn = 36.28 [m]

**Explanation:**

To solve this problem we must use the following equation of kinematics, which is ideal for a body that moves with constant acceleration.

[tex]x=x_{0}+(v_{o} *t)+(\frac{1}{2} )*a*t^{2}[/tex]

where:

x - xo = displacement of the car [m]

Vo = initial velocity = 0

t = time = 7.2 [s]

a = acceleration = 1.4 [m/s^2]

The initial velocity is zero, as the car begins its movement from rest.

xn = (x - xo), Now replacing

xn = (0*7.2) + 0.5*1.4*(7.2^2)

xn = 36.28 [m]

A car at the top of a ramp starts from rest and rolls to the bottom of the ramp, achieving a certain final speed. If you instead wanted the car to achieve twice as much speed at the bottom of the ramp, how high should the ramp be compared to the first case

**Answer:**

**It must be 4 times high.**

**Explanation:**

⇒ [tex]m*g*h = \frac{1}{2} * m*v^{2}[/tex]

Let's call v₁, to the final speed of the car, and h₁ to the height of the ramp.So, at the bottom of the ramp, all the gravitational potential energy

must be equal to the kinetic energy of the car (Defining the bottom of

the ramp as our zero reference for the gravitational potential energy):

[tex]m*g*h_{1} = \frac{1}{2} * m*v_{1} ^{2}[/tex] (1)

Now, let's do v₂ = 2* v₁Replacing in (1) we get:[tex]m*g*h_{2} = \frac{1}{2} * m*(2*v_{1}) ^{2}[/tex] (2)

Dividing (2) by (1), and rearranging terms, we get:The Intensity level of a loud saw is 100 db at a distance of 5m. At what distance would the level be 80 db

**Answer:**

50 m

**Explanation:**

The relationship between the intensity of sound in dB and distance is given by the formula:

[tex]B_2=B_1+20log(\frac{R_1}{R_2} )\\\\Where \ B_2\ is \ the\ sound\ intensity\ at\ distance\ R_2\ and\\B_1\ is \ the\ sound\ intensity\ at\ distance\ R_1\ \\\\Given\ that: B_1=100\ dB, R_1=5\ m, B_2=80\ dB\\\\B_2=B_1+20log(\frac{R_1}{R_2} )\\\\80=100+20log(\frac{5}{R_2} )\\\\-20=20log(\frac{5}{R_2} )\\\\log(\frac{5}{R_2} )=-1\\\\\frac{5}{R_2}=10^{-1}\\\\\frac{5}{R_2}=0.1\\\\R_2=5/0.1=50\ m[/tex]

A chef places an open sack of flour on a kitchen scale. The scale reading of

40 N indicates that the scale is exerting an upward force of 40 N on the sack. The magnitude of this force equals the magnitude of the force of Earth’s gravitational attraction on the sack. The chef then exerts an upward force of

10 N on the bag and the scale reading falls to 30 N.Draw a free-body diagram of the latter situation.

**Answer:**

**Explanation:**

Given

Initial reading on scale =40 N

So, we can conclude that weight of the sack is 40 N

After this a 10 N force is applied upward on the sack such that the net force becomes (40-10) N downward (because downward force is more)

This net downward force is the resultant of earth graviational pull and the applied upward force.

So, this downward force acts on the machine which inturn applies an upaward force of same magnitude called Normal reaction.

This situation can be diagramatically represented by figure given below

**Answer:**

40N

**Explanation:**

trust

An electron moving in the direction of the x-axis enters a magnetic field. If the electron experiences a magnetic deflection in the -y direction, the direction of the magnetic field in this region points in the direction of the

**Answer:**

**-z**

**Explanation:**

The force on a moving charge due to a magnetic field follows the right hand rule, so a positive charge, experiencing a magnetic deflection in the -y direction, while it moves in the direction of the x-axis, will do it due to a magnetic field pointing in the +z direction.

As the electron has a negative charge, the magnetic field will point in the opposite direction, i.e., in the -z direction.

Peter is running laps around a circular track with a diameter of 100 meters. If it takes Peter 12 minutes to run 4 laps, how quickly is he running (in meters per second)?

**Answer:**

v = 1.74 m/s

**Explanation:**

Given that,

Diameter of a circular track, d = 100 m

Distance covered for the 4 laps,

[tex]D=4\pi d\\\\D=4\pi \times 100\\\\D=1256.63\ m[/tex]

Time, t = 12 minutes = 720 s

**We need to find the velocity of the peter. It can be calculated as follows :**

[tex]v=\dfrac{D}{t}\\\\v=\dfrac{1256.63\ m}{720\ s}\\\\v=1.74\ m/s[/tex]

**So, the speed is running with a velocity of 1.74 m/s. **

**Peter **is **running **at** 1.7453 m/sec.**

Given to us,

**Diameter **of the **circular track, D **= 100 meters,

**Number **of **laps Peter run**, L = 4 laps,

**Time taken **by **Peter**, t = 12 minutes,

1 lap = **circumference **of the **circle,**

4 laps = 4 x **circumference **of the **circle,**

As we know, the **circumference **of a **circle **is **given **by **πD.**

So, 4 **laps **= 4 x **circumference **of the **circle,**

[tex]\begin{aligned}4 laps &= 4\times \pi \times D\\&= 4 \times \pi \times 100\\& = 1,256.6370\ meters\\\end{aligned}[/tex]

Also, we know that** 1 minute** has **60 sec.**

so, 4 minutes = (4 x 60) **seconds**

Further, **speed **is given [tex]\bold{(\dfrac{Distance}{Time} )}[/tex]

Thus,

[tex]\begin{aligned}speed &= \dfrac{Distance\ coverd\ by\ Peter}{Time\ taken\ by\ Peter}\\&=\dfrac{1,256.6370}{12\times 60}\\&=1.7453\ m/sec \end{aligned}[/tex]

Hence, **Peter **is **running **at** 1.7453 m/sec.**

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A fountain shoots a jetof water straight up. The nozzle is 1 cm in diameter and the speed of the water exiting the nozzle is 30 m/s. What is the force exerted by the water jet

**Answer:**

**Explanation:**

mass of water coming out per second = A x v where A is area of cross section of the nozzle and v is velocity of water

A = 3.14 x .005²

= 785 x 10⁻⁷ m²

mass of water coming out per second = 785 x 10⁻⁷ x 30 = 23.55 x 10⁻⁴ kg

momentum of this mass = 23.55 x 10⁻⁴ x 30 = 706.5 x 10⁻⁴ kg m /s .

Rate of change of momentum = 706.5 x 10⁻⁴

Let force be F

F - mg = 706.5 x 10⁻⁴

F = mg + 706.5 x 10⁻⁴

F = 23.55 x 10⁻⁴ x 9.8 + 706.5 x 10⁻⁴

= 937.3 x 10⁻⁴ N .

A recipe gives the instructions below

After browning the meat pour off fat from the pan to further reduce fat use a strainer.

what type lf separation methods are described in the recipe

A decantation and screening

B distillation and screening

C decantation and centrifugation

D distillation and filtration

**Answer:**

**A. decantation and screening
**

**Explanation:**

Decantation is the one of the process of separating the mixture. In this process the precipitated liquid is separated from the solid. According to the given instruction for the recipe, the fat which is in liquid state is separated from meat. In the process of screening, more liquid is separated by placing the mixture on the screen. Here, the gravity plays an important role for the process of separation.

**Answer:**

a

**Explanation:**

A person following a liberal ideology would likely approve of

i’m

not sure sorry :5

not sure sorry :5

How many turns are in its secondary coil, if its input voltage is 120 V and the primary coil has 210 turns

Complete Question

How many turns are in its secondary coil, if its input voltage is 120 V and the primary coil has 210 turns.

The output from the secondary coil is 12 V

Answer:

The value is [tex]N_s = 21 \ turns [/tex]

Explanation:

From the equation we are told that

The input voltage is [tex]V_{in} = 120 \ V[/tex]

The number of turns of the primary coil is [tex]N_p = 210 \ turn[/tex]

The output from the secondary is [tex]V_o = 12V[/tex]

From the transformer equation

[tex]\frac{N_p}{V_{in}} =\frac{N_s}{V_o}[/tex]

Here [tex]N_s[/tex] is the number of turns in the secondary coil

=> [tex]N_s = \frac{N_p}{V_{in}} * V_s[/tex]

=>[tex]N_s = \frac{210}{120} * 12[/tex]

=>[tex]N_s = 21 \ turns [/tex]

This is due soon today can somebody help?35 points (if they're all right) comment if you don't know it
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