look at image for question

Answer:

4sec

Explanation:

Since we know the initial velocity=0, acceleration = -4; and the displacemnt =14, we use the equation d = vi • t + ½ • a • t2. So, just plug in the values and solve for t in this case it's 4 sec

A body is said to be in freefall when it moves solely under the influence of  gravity.

The time it took for the ball to crash at the surface = 3 sec.

acceleration of gravity on the moon is 4 m/s^2.

the height of 14 m.

The formula for free fall:

\(h= \frac{1}{2}gt^2\)

t^2 = 2h /g = 2 x 14 /4 = 7

t = \(\sqrt{7} = 2.65\) sec ≅ 3 sec.

The time it took for the ball to crash at the surface = 3 sec.

To learn more about :   freefall

Ref : https://brainly.com/question/12167131

#SPJ2

A program that could do an instantaneous analysis of video motion will be useful it in a sportscast to analyze events as they occur.

A motion video is defined as the display of video images at a rate (such as thirty frames per second) that causes objects to appear to move smoothly and continuously.

Sports inherently involve fast and accurate motion, which can be difficult for competitors to master but also for coaches and trainers to analyze and audiences to follow. Because of the nature of most sports, monitoring with sensors or other devices attached to players or equipment is generally not possible. This opens up a plethora of opportunities for the use of computer vision techniques to assist competitors, coaches, and the audience

Learn more about motion on:

https://brainly.com/question/27802581

#SPJ1

Answer:

Explanation:

For a person suffering from nearsightedness, far point is 3.5 m . That means , an object beyond 3.5 m will not be clearly visible by the person . Ray of light coming from 3.5 m will be focussed on retina . For an object to be visible from infinity , ray of light coming from infinity should appear to be coming from 3.5 m . In other words , the object placed at infinity should form a virtual  image at 3.5 m . This can be done by concave lens.

u = ∝ ;  v  = 3.5

Using lens formula

\(\frac{1}{v} -\frac{1}{u} = \frac{1}{f}\)

\(\frac{1}{-3.5} -0 = \frac{1}{f}\)

f = - 3.5 m .

Answer:

Dopamine

Explanation:

schizophrenia is caused by an overactive dopamine system in the brain

An overabundance of Dopamine. is linked to schizophrenia and may be the cause of delusions and hallucinations

Schizophrenia is a mental illness characterized by psychotic episodes and the inability to relate thoughts, feelings and actions, accompanied by delusions, hallucinations (auditory, visual, olfactory and tactile), incoherent thoughts, memory disorders and, in occasions, confusion.

Dopamine is a hormone synthesized by the brain that acts as a neurotransmitter and allows the connection between neurons. Studies suggest that some of these alterations in mental functions are caused by an excess in the activity of dopaminergic synapses, that is, there is a hyperactivity in those connections

where dopamine is produced and expelled, which range from the ventral tegmental area to the nucleus accumbens and the amygdala, which are the main ones responsible for synthesizing and expelling dopamine from brain reward systems.

To know more about Schizophrenia follow

https://brainly.com/question/6495381

Answer:

a) v(f) = -4i - 5j

b) 4.18 m

Explanation:

The equation to be used for this question is

v(c)m(c) + v(t)m(t) = [m(c) + m(t)] v(f)

if we rearrange and make v(f) subject of formula, then

v(f) = v(c)m(c) + v(t)m(t) / [m(c) + m(t)]

One vehicle is headed towards south and the other vehicle, west when they collide they will travel together in a southwestern direction. This means that both vehicles are traveling in the negative direction taking a standard frame of reference. Thus, we can write the equation in component form by substituting the values as

v(f) = 1225(-9.5i) + 1654(-8.6j) / 1225 + 1654

v(f) = -11637.5i - 14224.4j / 2879

v(f) = -4i - 5j m/s

From the answer,

v(f) = √(4² + 5²)

v(f) = √41

v(f) = 6.4 m/s

And we know that

KE = ½mv²

Fd = umgd

And, KE = Fd, so

½mv² = umgd

½v² = ugd

Making d the subject of formula,

d = v²/2ug

d = 6.4² / 2 * 0.5 * 9.8

d = 41 / 9.8

d = 4.18 m

(a) The velocity of the system after collision is 4.04 i + 4.9 j.

(b)The distance traveled by the vehicles after collision is 1.73 m.

The given parameters;

Apply the principle of conservation of linear momentum to determine the velocity of the system after collision;

\(m_1u_x_1 + m_2 u_y_2 = V(m_1 + m_2)\\\\V = \frac{(1225\times 9.5)_x \ + \ (1654 \times 8.6)_y}{m_1 + m_2} \\\\V = \frac{(1225\times 9.5)_x \ + \ (1654 \times 8.6)_y}{1225+ 1654} \\\\V= \frac{(11,637.5)_x \ + \ (14,224.4)_y}{2879} \\\\V = 4.04x \ + 4.94y\\\\V = 4.04i \ + 4.9 j\)

The magnitude of the final velocity of the system is calculated as;

\(V = \sqrt{v_x^2 + v_y^2} \\\\V = \sqrt{(4.04)^2 + (4.9)^2} \\\\V = 6.35 \ m/s\)

The change in the mechanical energy of the system;

\(\Delta K.E = K.E_f - K.E_i\\\\\)

The initial kinetic energy of the cars before collision is calculated as;

\(K.E_i = \frac{1}{2} m_1u_1_x^2 \ + \frac{1}{2} m_1u_2_y^2 \\\\K.E_i = \frac{1}{2} (1225)(9.5)^2\ + \frac{1}{2} (1654)(8.6)^2\\\\K.E_i = 55,278.13_x \ + \ 61,164.92_y\\\\K.E_i = \sqrt{55,278.13^2 \ + \ 61,164.92^2} \\\\K.E_i = \sqrt{6,796,819,094.9} \\\\K.E_i = 82,442.82 \ J\)

The final kinetic energy of the system;

\(K.E_f = \frac{1}{2} (m_1 + m_2)V^2\\\\K.E_f = \frac{1}{2} (1225 + 1654)(6.35)^2\\\\K.E_f = 58,044.24 \ J\)

The change in kinetic energy is calculated as;

\(\Delta K.E = K.E_f -K.E_i\\\\\Delta K.E= (58,044.24) - (82,442.82)\\\\\Delta K.E = -24,398.58 \ J\)

Apply the principle of work-energy theorem, to determine the distance traveled by the vehicles after collision;

\(W = \Delta K.E\\\\- \mu Fd = - 24,398.58\\\\\mu mgd= 24,398.58\\\\d = \frac{24,398.58}{\mu mg} \\\\d = \frac{24,398.58}{0.5 \times 9.8(1225 + 1654)} \\\\d = 1.73 \ m\)

Thus, the distance traveled by the vehicles after collision is 1.73 m.

Learn more here:https://brainly.com/question/10063455

Answer:

Explanation:

Using the equation of motion v² = u²+2aS

v is the final velocity = 120km/hr

120km/hr = 120 * 1000/1 * 3600 = 33.3m/s

u is the initial velocity = 0m/s

a is the acceleration

S is the distance covered = 240m

On substituting the given parameters

33.3² = 0²+2a(240)

33.3² = 480a

1110 = 480a

a = 1110/480

a = 2.3125m/s²

Hence the minimum constant acceleration that the aircraft require to be airborne after a takeoff run of 240 m is 2.3125m/s²

The current flowing through the 1Ω resistor in the circuit is 0.66 A.

The emf of the cells, V = 1.1 V

Internal resistance of the cells, r = Ω

Resistance across the circuit, R = 1 Ω

According to Kirchhoff's current law, the total current flowing into and out of a junction in an electrical circuit is equal.

According to Kirchoff's current law,

(1.1 - V'/2) + (1.1 - V'/2) + (1.1 - V'/2) = V'/1

3/2(1.1 - V') = V'

3.3 - 3V' = 2V'

5V' = 3.3

Therefore, the terminal velocity of the battery is,

V' = 3.3/5

V' = 0.66 V

Therefore, according to Ohm's law, the current flowing through the 1Ω resistor is given by,

I = V'/R

I = 0.66/1

I = 0.66 A

To learn more about Kirchhoff's current law, click:

https://brainly.com/question/30763945

#SPJ1

The well that will have most of the water will be well A.

The underground water supply is defined as a type of water that exists underground in saturated zones beneath the land surface.

From the two wells represented in the diagrams above, Well A has water supply from underground which is lacking in well B.

Therefore, well A will have most of the water more than B.

Learn more about water cycle here:

https://brainly.com/question/25796102

#SPJ1

The tension in the strings are 31.47 and 19.25 N respectively.

Mass of the block, m = 3 kg

From the figure, consider the vertical components,

T₁ sin45° + T₂ sin30° = mg

(T₁/√2) + (T₂/2) = 3 x 9.8 = 29.4

Also, consider the horizontal components,

T₁ cos45° = T₂ cos30°

T₁/√2 = T₂ x√3/2

T₁ = T₂ x √3/2 x √2

So,

T₁ = 0.612T₂

Applying in the first equation,

(T₁/√2) + (T₂/2) = 29.4

(0.612T₂/1.414) + 0.5T₂ = 29.4

0.434 T₂ + 0.5 T₂ = 29.4

0.934 T₂ = 29.4

Therefore, the tension,

T₂ = 29.4/0.934

T₂ = 31.47 N

So, the tension,

T₁ = 0.612 T₂

T₁ = 0.612 x 31.47

T₁ = 19.25 N

To learn more about tension, click:

https://brainly.com/question/30037765

#SPJ1

Question :-

Answer :-

Explanation :-

As per the provided information in the given question, we have been given that the Resistance of the Blender is 7 Ohms . Its Power is given 350 Watt . And, we have been asked to calculate the Current in the Blender's Circuit .

For calculating the Current , we will use the Formula :-

\( \bigstar \: \: \: \boxed{ \sf{ \: Current \: = \: \dfrac{Voltage}{Resistance} \: }} \)

Therefore , by Substituting the given values in the above Formula :-

\( \dag \: \: \: \sf { Current \: = \: \dfrac{Voltage}{Resistance}} \\ \)

\( \longmapsto \: \: \: \sf { Current \: = \: \dfrac{350}{7}} \\ \)

\( \longmapsto \: \: \: \textbf {\textsf { Current \: = \: 50}} \\ \)

Hence :-

\( \underline {\rule {180pt} {4pt}} \)

Your answer would be 21!

Based on research by Abraham Maslow, the meta-needs which are fulfilled by "making more money" are none of the meta-needs.

According to Abraham Maslow, meta-needs are human needs that relate to beauty, knowledge and creativity.

All of these can be met without having to make more money so it stands to reason that there are no meta-needs that can be met by making more money.

The main need that is met by making more money according to Maslow is Security and it is not a meta-need.

Find out more on Abraham Maslow at https://brainly.com/question/7059459.

Answer:

Explanation:

i think that the inside and outside of electric wire are make from different material because outdoor electrical wires are always exposed to the fluctuations of temperature and moisture, they are made with more durable insulation. If an indoor electrical wire is used outdoors, it is possible for sunlight to break down the protective layers. Electrical conductors are made up of metals such as, copper, aluminum, etc. These metals are used to make wires. Most wires are made out of copper because it conducts electricity with high flexibility and very little resistance. The first stage in the manufacturing process of a conductor is the wire-drawing

Speed is the time rate of an object moving from one place to another, while velocity is the rate and direction of the object's movement. They are very similar but they don't mean the same thing.

The normal force on the box is 210 N.

A force is an effect that can alter an object's motion according to physics. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.

Normal force on the box = total Weight of box and person = 210 N.

The normal force on the box is 210 N.

To learn more about force refer to the link:

brainly.com/question/13191643

#SPJ1

Answer:

Speed of lighter particle = -21.53 m/s

Speed of other particle = 3.8 m/s

Explanation:

Let mass of the lighter object be m

Thus mass of heavier object = 4m

Speed of lighter particle = 19 m/s

Speed of second particle with opposite direction = - ⅓(19) m/s = -19/3 m/s

Now, from the formulas of momentum before collision = momentum after collision, and also kinetic energy before collision = Kinetic Energy after collision, we have;

v_bf = [2m_a/(m_a + m_b)]v_ai + [(m_b - m_a)/(m_a + m_b)]v_bi

Now, in this question;

m_a = m

m_b = 4m

v_ai = 19

v_bi = -19/3 m/s

Thus;

v_bf = [2m/(m + 4m)]19 + [(4m - m)/(m + 4m)](-19/3)

Simplifying to get;

v_bf = 19(2m/5m) - (19/3)(3m/5m)

>> v_bf = 38/5 - 19/5

>> v_bf = 19/5 m/s

>> v_bf = 3.8 m/s

Similarly;

v_af = [(m_a - m_b)/(m_a + m_b)]v_ai + [2m_b/(m_a + m_b)]v_bi

v_af = 19((m - 4m)/(m + 4m)) - (19/3)((2 × 4m)/(m + 4m))

This gives;

v_af = 19(-3m/5m) - (19/3)(8m/5m)

v_af = -(57/5) - (152/15)

v_af = -323/15

v_af = -21.53 m/s

Answer:

Yes.

Explanation:

Answer:

I do believe it is. (more characters for character limit)

The voltage of the power source flowing through the given wire is determined as 2.67 x 10⁻⁵ V.

The voltage of the power source is determined from ohm's law as shown below;

V = IR

where;

But, I = Q/t

V = (Q/t)R

\(V = \frac{QR}{t} \\\\V = \frac{(1\times 10^{15} \times 1.602\times 10^{-19} \ C) \times \ 10 \ ohms}{1 \times 60\ s} \\\\V = 2.67 \times 10^{-5} \ V\)

Thus, the voltage of the power source flowing through the given wire is determined as 2.67 x 10⁻⁵ V.

Learn more about voltage here: https://brainly.com/question/14883923

#SPJ1

We will have the following:

a) We first determine the time it takes to travel the distance to both vehicles:

*

*

So, we determine now the difference in time:

So, the fastest car will arrive approximately 0.66 hours sooner.

b) We determmine the distance it must travel the fastest car to have a 15 minute lead on the other one as follows:

First, we determine the time difference required:

Then, since both vehicles will move relative to each other, we will have that:

So, the fastest car must be 15 miles ahead of the other car in order to have a 15 minute lead with respect to the second car.

The pressure of the gas in the deodorant can when it is heated to 900 K is 9 atm.

Gay-Lussac's law states that the pressure exerted by a given quantity of gas varies directly with the absolute temperature of the gas.

It is expressed as;

P₁/T₁ = P₂/T₂

From the data:

We substitute our values into the expression above and solve for final pressure.

P₁/T₁ = P₂/T₂

P₁T₂ = P₂T₁

P₂ = P₁T₂  / T₁

P₂ = ( 3 atm × 900 K ) / 300 K

P₂ = 9.0 atm

Therefore, the final pressure is 9.0 atm.

Learn more about Gay-Lussac's law here: brainly.com/question/1358307

#SPJ1

The peak wavelength for peak intensity of 3000 K is 967 nm and peak wavelength for peak intensity of 50,000K will be 58nm.

Power is the amount of energy which is transferred or converted per unit of time taken. In the International System of Units, the unit of power is the watt (W), which is equal to one joule per second.

Stefan-Boltzmann constant = 5.67 × 10⁻⁸ Wm²

Peak intensity = 2000 K

P = (5.67 × 10⁻⁸) × (3000)⁴

P = 4.59 × 10⁶

P = 459 2700 watts of power per square meter.

Peak intensity = 3000 K

Using Wein law,

λ max = 0.29/ 7

λ max = 0.29/ 3000 = 9.67 × 10⁻⁵ = 967 nm

Same method as above will be used for 50,000 K

P = 3.56 × 10¹¹ W/m²

P = 356.00.000000000 W/m²

λ (Peak) = 58nm

Learn more about Power here:

https://brainly.com/question/287674

#SPJ1

Answer:

So do 2400 divided by 70. I got 34.285714 and the numbers behind the decimal are repeating. If you round it you get 34.3

Answer:

Below

Explanation:

To win a water balloon contest without breaking the balloon, you must focus on the catch. Momentum, impulse, force, and impact time all play a crucial role in the success of the catch.

The key to catching a water balloon without breaking it is to minimize the impact force on the balloon. The impact force is determined by the momentum of the balloon, the impulse applied to the balloon, and the impact time.

Momentum is the product of an object's mass and velocity. In this case, the water balloon has a certain mass and velocity as it is thrown towards you. The greater the momentum of the balloon, the harder it will be to catch it without breaking it.

Impulse is the product of the force applied to an object and the time over which that force is applied. When catching a water balloon, you must apply an impulse to the balloon in order to stop it. The greater the impulse, the more effectively you will be able to stop the balloon.

The key to catching a water balloon without breaking it is to apply a large impulse to the balloon over a short period of time. This will minimize the impact force on the balloon and prevent it from breaking.

To do this, you must pay careful attention to the movement of the balloon as it is thrown towards you. As the balloon approaches, you must quickly move your hand to intercept it and apply an impulse to stop it. This can be done by cupping your hand and applying a gentle but firm push to the balloon as it hits your hand.

By applying the right amount of impulse over a short period of time, you can effectively stop the balloon and prevent it from breaking. This will allow you to win the water balloon contest without breaking the balloon.

In summary, to win a water balloon contest without breaking the balloon, you must focus on the catch. Pay attention to the movement of the balloon and apply an impulse to stop it over a short period of time. This will minimize the impact force on the balloon and prevent it from breaking.

The car is moving at approximately 12.5 meters per second.

The kinetic energy (KE) of an object can be calculated using the formula:

KE = 1/2 * m * \(v^2\)

where

KE = kinetic energy,

m =Mass of the object, and

v = velocity.

In this case, we are given the mass (m) of the car as 1600 kg and the kinetic energy (KE) as 125,000 J. To find the velocity .

Substituting the  values , we have:

125,000 J = 1/2 * 1600 kg *\(v^2\)

Now, we can solve for v by rearranging the equation:

\(v^2\) = (2 * 125,000 J) / 1600 kg

\(v^2\) = 156.25 \(m^2/s^2\)

Taking the square root, we find:

v = √156.25\(m^2/s^2\)

v ≈ 12.5 m/s

Therefore, the car is moving at approximately 12.5 meters per second.

Know more about   kinetic energy  here:

https://brainly.com/question/8101588

#SPJ8

Answer:

v = 10 [m/s]

Explanation:

The largest mass is that of 4 [kg], in this way the momentum can be calculated by means of the product of the mass by velocity.

\(P=m*v\\\)

where:

P = momentum [kg*m/s]

m = mass = 4 [kg]

v = velocity = 5 [m/s]

Now the momentum:

\(P=4*5\\P=20[kg*m/s]\)

This same momentum is equal for the other mass, in this way we can find the velocity.

\(P=m*v\\20=2*v\\v=10[m/s]\)

Answer:

They have each lost the same amount of potential energy. (The lost potential energy is converted to kinetic energy.)

The mass of the metal ball is approximately equal to 0.1 kg.

Freefall is a type of motion in which an object falls with gravitational acceleration without resistance from air, surface, or medium. In a freefall, the only force acting on an object is the force of gravity. In a freefall, the acceleration of an object is given by the formula:  `g = 9.81 \(m/s^2`\)

The final velocity of a freefalling object can be calculated using the formula: `v = g*t `Where v is the final velocity, g is the gravitational acceleration, and t is the time taken to reach the final velocity. The force acting on an object is equal to the product of the mass of the object and the acceleration acting on the object. This is known as Newton's Second Law of Motion.

The formula for calculating force is:  `F = ma`.Where F is the force acting on the object, m is the mass of the object, and a is the acceleration acting on the object.Given that the velocity of the metal ball at the moment of striking the ground was 30 m/s, and that it stopped after penetrating the sand for 0.01 s, we can calculate the mass of the metal ball using the formula for force.

We can assume that the force acting on the metal ball is equal to the average resistance force of the sand against the motion of the ball.

The formula for calculating force is: `F = ma`.

Rearranging the formula, we get: `m = F/a` .

Substituting the given values, we get:  `

m = -3010/10`

Thus, the mass of the metal ball is approximately equal to 0.1 kg.

Know more about   metal ball   here:

https://brainly.com/question/29857789

#SPJ8