A car traveling at an initial velocity of 12.0 m/s accelerates at a constant rate to 20.0 m/s over a time of 4.00 s. How far did the car travel during this time (m)?

Answer:

the initial velocity of the particle is 5 cm/s

Explanation:

Given initial displacement as, s = 6t² + 5t - 5

s is measured in "cm"

t is measured in "seconds"

Velocity is the rate of change of displacement with time. Expressed as follows;

[tex]v = \frac{ds}{dt} = 12t + 5[/tex]

for initial velocity, time (t) = 0

v = 12(0) + 5

v = 5 cm/s

Therefore, the initial velocity of the particle is 5 cm/s

Answer:

Explanation:

Answer:

The waves travel at the same speed, but the observed frequency depends on any relative motion between the observer and source. When the observed frequency changes, so does the wavelength. If the observer and source are moving toward each other, then the frequency increases and the wavelength decreases

Explanation:

Hope it helps.

Answer:

$10 a g

Explanation:

Answer:

As The mass of the beach ball is having lowest magnitude when compared with the other balls given so when apply the same magnitude of force to all the balls then the beach ball due to its lighternessand also its inertia of rest would not resist the force so much so when you apply the force to this ball it would starts to roll and covers the maximum diatance whwn compared with the other ball only in the condition when same magnitude of force applied.Thats this ball would do more work than the other ball.The mass also influences the velocity carried by the body and also the kinetic energy possessed by the body. More the force applied more the distance it would cover

Hope it helps

Answer:

Rotational inertia depends both on an object's mass and how the mass is distributed relative to the axis of rotation. ... We can't just consider the mass to be concentrated at its center of mass. When a mass moves further from the axis of rotation it becomes more difficult to change the rotational velocity of the system.So the ball with 10 pounds of the ball can have more probability to do an absolute pure rotation along rolling translation.And also the specific material from which it is made up of. As If the body is rigid have the points dont move from their position when a magnitude of force applied then the body woukd perform a well rotation than a resistantant body.

Hope it helps

Answer:

Gravitational POTENTIAL ENERGY is greatest at the highest point of a roller coaster.

Explanation:

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have a great day/night :)

opaque glass does not allow light to pass through it.

Answer:

E) 147 V

Explanation:

Ra+Rb+Rc = 14.0

V = IR

V = (10.5)(14.0)

V = 147 V

The potential difference across the source will be c)12V

Ohm's law states that  the current through a conductor between two points is directly proportional to the voltage across the two points .

since , R(A) , R(B) AND R(C) are in parallel combination , hence  equivalent

resistance of the circuit will be

1/R = 1/R(A) + 1/ R(B) + 1/ R(C)

1/R= 1/2 + 1/4 +1/8

1/R = 7/8

R = 8/7 ohm

from ohm's law

Voltage = current * resistance

V( source ) = current (in circuit ) * R (equivalent resistance)

V = 10.5 * (8/7)

V = 12 V

The potential difference across the source will be c) 12V

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P = W / t

370,000 = 1,850,000 / t

t = 1,850,000 / 370,000

t = 185 / 37

t = 5 seconds

Answer:

As you increase in elevation, there is less air above you thus the pressure decreases. As the pressure decreases, air molecules spread out further (i.e. air expands) and the temperature decreases.

why not

but

you must answer these two questions...

Was the night at the museum trilogy good?

Is JedTavius a real ship?

Answer:

UH TAHNKYOU VERY MUCH SIR UH HAVE A GOOD DAY

Explanation:

Answer:

The correct answer would be "They are opposites because endothermic reactions require energy and exothermic reactions release energy".

Answer:

https://mi01000971.schoolwires.net/cms/lib05/MI01000971/Centricity/Domain/470/gases_hw_packet_key.pdf

Explanation:

Answer:

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Answer:

Explanation:

The equation for this is

f = μ[tex]F_n[/tex] where f is the frictional force the block needs to overcome, μ is the coefficient of static friction, and [tex]F_n = w=mg[/tex] (that means that the normal force is the same as the weight of the block which has an equation of weight = mass times the pull of gravity). Filling in:

1.09 = μ(.413)(9.8) and

μ = [tex]\frac{1.09}{(.413)(9.8)}[/tex] so

μ = .27

The coefficient of static friction for the given block is equal to 0.27.

Static Friction can be defined as friction that is experienced by an object when it is placed on a surface. Kinetic friction can be defined as friction due to the movement of a body on a surface. The coefficient of static friction can be described as a scalar parameter and is denoted as μs.

The coefficient of static friction can be determined from the following expression:

[tex]\displaystyle \mu_s = \frac{F}{mg}[/tex]

Where F is the applied force, m is the mass of the object and g is the gravitational acceleration.

Given, the force acting on the block  to overcome static friction = 1.09 N

The mass of the block, m = 0.413 Kg

The gravitational acceleration, g = 9.8m/s²

The coefficient of static fraction = 1.09/(0.413 ×9.8) = 0.27

Therefore, the coefficient of static friction is 0.27.

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Answer:

Less strongly attracted.

Explanation:

Potassium and sodium are both alkali metals. That means that they have the ability to be able to gather more valence electrons. They will both gain a positive particle. The potassium electron is less attracted because of the fact that now the sodium has a positive chargem and the electron has a negative charge.

Answer:

Explanation:

The frequency equation for waves is

[tex]f=\frac{v}{\lambda}[/tex] where f is the frequency, v is the velocity, and lambda is the wavelength. Filling in:

[tex].26=\frac{v}{25}[/tex] so

v = .26(25) and

v = 6.5 meters/second

Answer:

6.39*(10 to the 23rd)=

6.39*10²³

Answer:

The first one is wrong, they don’t push nor pull, it’s an invisible force that acts on everything equally

Explanation:

Hopes this helps

Answer:

Explanation:

The first question utilizes the one-dimensional equation

Δx = [tex]v_0t+\frac{1}{2}at^2[/tex] where Δx is the displacement of the bullet, v₀ is te initial velocity with which the bullet was fired, a is the acceleration in the horizontal dimension (which is always 0!), and t is the time in seconds. That's our unknown here. Filling in:

[tex]200.0=660t+\frac{1}{2}(0)t^2[/tex] and

200.0 = 660t so

t = .30 seconds

The second question is a simple application of Newton's 2nd Law which says force = mass times acceleration:

14000 = m(5.0) so

2800 kg = m

The third question is a bit more interesting. We will use the one-dimensional equation

[tex]v=v_0+at[/tex] where v is the final velocity of the ball (which is always 0 at the top of its projectile path!), v₀ is the initial velocity of the ball, a is the pull of gravity on the ball, and t is the time it takes to do this. Filling in:

0 = 30 + (-9.8)t and

-30 = -9.8t so

t = 3.1 seconds

Answer:

According to online, it shows that lightning can be traveling at 186,000 miles in only one second!

Hope it was helpful

Answer:

Total: 200 meters, Displacement: 100 meters South

Explanation:

First, add up the meters traveled to get the total distance.

50m + 150m = 200m

Lastly, displacement is the shortest distance from the initial position to the final position. The person first walked 50 meters north but then traveled 150 meters south. Therefore, their displacement was 100 meters south.

50m - 150m = -100m

(Note: Directions are vectors. North and East are positive vectors while South and West are negative)

Answer: The answer is density

Answer:

Workdone = 15 Nm

Explanation:

Given the following data;

Length of ramp (distance) = 3 m

Force = 5 N

To find the work done on the piano;

Mathematically, work done is given by the formula;

Workdone = force * distance

Substituting into the formula, we have;

Workdone = 5 * 3

Workdone = 15 Nm

II. The name of the simple machine for "ramp” is an inclined plane.

Typically, an inclined plane has a flat supporting surface that is set at an angle with an end higher than the other and it can be used to lift or lower an object.

Answer:

the correct answer is B

Explanation:

The kinetic model of the movement describes that the movement of the molecules increases with the increase of their internal energy, which in a macroscopic sample is reflected in an increase in the temperature of the sample.

The sample graph shows the function of temperature over time, which is why our kinetic model establishes that there is an increase in the movement of water molecules.

Consequently the correct answer is B

Answer: C

Explanation:

The molecules will begin to move more slowly when the heat source is removed. When the heat is off, the water will begin to cool. Molecules in liquid water move more slowly. The molecules require less space and are closer to each other. And in ice, the molecules contain the least amount of heat energy, so the movement is very slow.

Explanation:

first find the volume of room --->

[tex]v \: = 10 \times 12 \times (400 \times {10}^{ - 2} ) \times = 480 \: {m}^{3} [/tex]

then find the mass

[tex]mass \: = \: density \: \times \: volume \: = 480 \times 1.26 = 604.8 \: kg[/tex]

Answer:

B) uniform

Explanation:

We can solve this problem by using Boyle's law, which states that:

For a constant mass of an ideal gas kept at constant temperature, the pressure of the gas is inversely proportional to its volume.

Mathematically:

where

p is the pressure of the gas

V is its volume

If we apply the equation to the bottle in the problem, we see that:

- when the volume of the bottle (and therefore, of the gas inside) decreases, than the pressure will increase

- viceversa, when the volume of the bottle increases, the pressure will decrease

The amount by which the pressure increases is inversely proportional to the decrease in volume, so the answer depends on how the volume of the bottle decreases: however, if the volume of the bottle decreases uniformly, then we can say that the pressure inside the bottle will also increases uniformly.

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An increase in pressure of a plastic bottle  uniformly decreases by a factor of ten when the volume decreases.

Pressure is defined as the force applied on an object perpendicular to it's surface per unit area over which it is distributed.Gauge pressure is a pressure which is related with the ambient pressure.

There are various units by which pressure is expressed most of which are derived units which are obtained from unit of force divided by unit of area . The SI unit of pressure is pascal .

It is a scalar quantity which is related to the vector area element with a normal force acting on it.It is distributed over solid boundaries and across arbitary sections of fluid normal to the boundaries at every point.Pressure and volume of gas are inversely proportional.

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