By what percentage does the drag force on a car increase as it goes from 61 km/h to 113 km/h?

The law of conservation of matter stated that during a chemical reaction, the amount of matter stays the same. Thus, option B is correct.

Matter can be changed into other forms either by physical or chemical changes. But through any of these changes matter remains constant. The amount of matter present before the chemical reaction will remain the same after the chemical reaction. Thus, the matter can neither be created nor destroyed.

The law of conservation of matter is defined as the law of conservation of mass. Hence, in a system, the mass or matter remains conserved, before and after the chemical reaction and it was given by Antonie Lavoisier.

The law of conservation of matter states that during a chemical reaction, the amount of matter remains the same. Thus, the ideal solution is option B.

To learn more about the Law of conservation of matter:

https://brainly.com/question/12733091

#SPJ1

They bounce off each other, conserving energy and momentum.

This is considered an elastic collision because they bounce off each other, conserving energy only.

Gas is the state of matter that is made up of particles which freely move about its container and they bounce off each other.

As the particles move over each other they collide without exerting any force in each other. This is known as elastic collision.

Kinetic energy is conserved in elastic collisions which occurs between gas molecules.

While in inelastic collision, momentum is conserved and kinetic energy is not.

Because the gas particles do not stick together as they collide, no force is exerted and kinetic energy is therefore conserved.

Learn more here:

https://brainly.com/question/24478517

Answer:

false

Explanation: because an orbit is not equal to being in a permanent free fall because if it is not equal the orbit is not correct

Capsule communicator or Capcom  is the only group in mission control that gets to communicate with the astronauts in space. Hence, option (B) is correct.

The capsule communicator, or Capcom, was the only voice that spoke to the astronauts during their trip to avoid any mistake. To ensure that the men in the capsule always had a familiar individual who understood their situation and could provide the information they required, Capcom was always manned by astronauts.

Both the technical control team on the ground and the astronauts in space are represented by Capcom.

Learn more about Capcom here:

https://brainly.com/question/27805681

#SPJ1

Answer:

stationary waves are transverse waves

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:

zeros between nonzero numbers

nonzero numbers

zeros to the right of both the decimal point and a nonzero number

Explanation: edge 2020

Answer:

10800 kg m/s

Explanation:

Since the dumpster was initially at rest, its momentum before collision equal to zero. So that the total momentum of the car and dumpster before collision is 10800 kg m/s.

The principle of conservation of linear momentum states that: in a system of colliding bodies, total momentum is conserved. Therefore, the total momentum of the car and dumpster after collision is 10800 kg m/s.

Answer:

Acceleration Remains Constant and Velocity decreases.

Explanation:

Answer:

On Earth: mass = 115 kg; weight = 1127 N

Interspace:  mass = 115 kg; weight = 0 N

Explanation:

On Earth, his mass is 115 kg, and his weight is 115 kg * 9.8 m/s^2 = 1127 N.

On interspace , his mass is still 115 kg,  and his weight is Zero Newtons = 0 N

(a) The mass of space traveler on Earth is 115 kg and its weight is 1127 N.

(b)  The mass of traveler at interplanetary space is 115 kg and its weight is 0 N.

Given data:

The mass of space traveler outside the Earth is, m = 115 kg.

(a)

Since, the mass of any object is always remains constant. In other words, there is no way to destroy mass and hence mass of traveler on Earth will be same as 115 kg.

While the weight will be,

W = mg

W = 115(9.8)

W = 1127 N

Thus, we can conclude that the mass of space traveler on Earth is 115 kg and its weight is 1127 N.

(b)

On interspace , his mass is still 115 kg,  and his weight is Zero Newtons. This is because the gravity at interplanetary space is zero.

That is,

W = mg

W = 115 (0)

W = 0 N

Thus, we can conclude that the mass of traveler at interplanetary space is 115 kg and its weight is 0 N.

Learn more about the gravity here:

https://brainly.com/question/12008506

Just before the collision, the ball has a velocity of 9.3 m/s, downward. After the collision, the ball has a velocity of 6.2 m/s, upward.

To solve this problem, we can analyze the motion of the ball and block before and after the collision using the principles of conservation of energy and momentum. Since the collision is elastic, the total kinetic energy of the system is conserved. The ball has gravitational potential energy before the collision, which is converted to kinetic energy as it falls.

The block has no kinetic energy before the collision, but gains some after the collision due to the transfer of momentum from the ball. By equating the total kinetic energy before and after the collision and using the principle of conservation of momentum, we can solve for the velocities of the ball and block.

Learn more about  kinetic energy here:

https://brainly.com/question/8101588

#SPJ4

1. Completely cutting out food groups, such as grains, fruits, and vegetables, can have negative health implications as each food group provides essential nutrients.

This eating pattern of high meat and protein intake while restricting grains, fruits, and vegetables may not be sustainable over a lifetime, as it lacks balance and variety.

3. Three healthy foods that would be restricted in this diet are grains, fruits, and vegetables. These foods are important as they provide essential nutrients, antioxidants, and dietary fiber, supporting overall health, digestion, and reducing the risk of chronic diseases. Restricting these foods can lead to nutrient deficiencies and negatively impact well-being.

Read more on healthy foods here:https://brainly.com/question/30784972

#SPJ1

The radius of the wheel with a tangential velocity of 4.3 m/s and centripetal acceleration of 72 m/s² is 0.25 meter.

The acceleration of an object ,moving through a  circular path is called the centripetal acceleration. It is related to the velocity and radius of curvature of the circular path as follows:

a = v²/r.

The tangential velocity or angular velocity is the rotational analogue of the linear velocity.

given that, tangential velocity v = 4.3 m/s

centripetal acceleration a = 72  m/s²

Then, radius of the wheel is calculated as follows:

r = v²/a

r = (4.3 m/s × 4.3 m/s)72 m/s²

 = 0.25 meter.

Therefore, the radius of the rotating wheel is 0.25 meter.

Find more on centripetal acceleration:

https://brainly.com/question/29197591

#SPJ9

Answer:

hope its helps

good luck

Answer:

0.1 cm/s

Explanation:

16 min 40 second = 1000 sec

1m = 100cm

100/1000 = 0.1   (speed = distance/time)

Answer: Three forces act significantly on a freely floating helium-

filled balloon: gravity, air resistance (or drag force), and a

buoyant force.

Explanation:

The air pressure on the bottom of the balloon is slightly higher than the air pressure on the top of the balloon (because of the altitude difference). This difference gives rise to the bouyant force. This force competes with gravity as the two main forces acting on the balloon. Every time your feet hit the ground when you are running, the ground hits your feet with an equal and opposite force. Newton’s third law explains how balloons and rocket engines work. When the neck of an inflated balloon is released, the stretched rubber material pushes against the air in the balloon. The air rushes out of the neck of the balloon.

Answer:

which can cause an object with mass to change its volocity

Answer: The wheel will travel 102.72 meters if it completes 32 revolutions with a radius of 0.8 meters. ✅

Explanation:

A rolling wheel will travel a certain distance when it completes a certain number of revolutions. To calculate the distance, you need to know the number of revolutions and the radius of the wheel.

In this case, the wheel completed 32 revolutions and the radius is 0.8 meters. To calculate the distance, we will use the formula:

Distance = 2 * pi * radius * number of revolutions

So the distance this wheel will travel is:

Distance = 2 * 3.14 * 0.8 * 32

Distance = 102.72 meters

So the wheel will travel 102.72 meters if it completes 32 revolutions with a radius of 0.8 meters.

The complete question is;

In electronic circuits it is not unusual to encounter currents in the microampere range. Assume a 35 μA current, due to the flow of electrons. What is the average number of electrons per second that flow past a fixed reference cross section that is perpendicular to the direction of flow?

Answer:

2.185 × 10^(14) electrons/seconds

Explanation:

We are given current as 35 μA = 35 × 10^(-6) Amperes

The value of the charge on one electron is; e = 1.602 × 10^(-19) coulombs

Now, from conversions;

One ampere = one coulomb/second =

Then, 35 × 10^(-6) Ampere's would give;

35 × 10^(-6) Coulombs/sec

Now,

1.602 × 10^(-19) coulombs = 1 electron

Thus;

35 × 10^(-6) Coulombs/sec gives;

(35 × 10^(-6))/(1.602 × 10^(-19)) = 2.185 × 10^(14) electrons /sec

The average number of electrons per second that flow past a fixed reference cross-section perpendicular to the direction of flow is 2.185 × 10⁻¹⁴ electrons /sec

The question is as given below:

In electronic circuits, it is not unusual to encounter currents in the microampere range. Assume a 35 μA current, due to the flow of electrons. What is the average number of electrons per second that flow past a fixed reference cross-section that is perpendicular to the direction of flow?

Given information:

Current I = 35 μA = 35 × 10⁻⁶ A

charge on electron e = 1.602 × 10⁻¹⁹C

We know that:

I = de/dt, rate of flow of charge.

1A = 1C/s

Thus,

35 × 10⁻⁶ A = 35 × 10⁻⁶ C/s

Now, one electron has a charge of  1.602 × 10⁻¹⁹C

So, the number of electrons for a current of 35 × 10⁻⁶ C/s will be:

n = (35 × 10⁻⁶ C/s) ÷ (1.602 × 10⁻¹⁹C)

n = 2.185 × 10⁻¹⁴ electrons /sec

Learn more about current and charge:

https://brainly.com/question/1345174?referrer=searchResults

In 7.5 s, 4200 waves will pass a given point. Then, the frequency of the waves is 560 Hz.

Frequency is the number of cycles or oscillations of a wave that occur in one second, measured in Hertz (Hz). It is the rate at which a wave completes a full cycle, which is usually measured as the number of wavelengths that pass a fixed point in a unit of time.

The formula for frequency is;

frequency = waves/time

Where "waves" is the number of waves that pass a given point and "time" is the time it takes for those waves to pass.

In this case, we know that 4200 waves pass a given point in 7.5 seconds, so we can plug those values into the formula;

frequency = 4200/7.5

Simplifying;

frequency = 560

Therefore, the frequency of the waves is 560 Hz.

To know more about frequency here

https://brainly.com/question/14316711

#SPJ1

1. The work done on the car is equal to its change in kinetic energy, is 1500 J.

2. The work done on the motorcycle is equal to its change in kinetic energy, is 550 J.

3. The work done on the runner is equal to his change in kinetic energy, is  100 J.

4. The work done is equal to the negative of his change in kinetic energy, is 100 J.

5. The kinetic energy of the baseball is 67.5 J.

The definition of work done includes both the forces applied to the body and the total displacement of the body. A constant force F is present before to this block. The goal of this force is to move the body d meters in a straight line in the force's direction.

The work done on the car is equal to its change in kinetic energy, so W = ΔKE = 1500 J.

The work done on the motorcycle is equal to its change in kinetic energy, so W = ΔKE = 550 J. Since the motorcycle was initially at rest, its final kinetic energy is equal to the work done on it, so KEf = W = 550 J.

The work done on the runner is equal to his change in kinetic energy, so W = ΔKE = 350 J - 250 J = 100 J.

Since the runner's kinetic energy has decreased, negative work must have been done on him. The work done is equal to the negative of his change in kinetic energy, so W = -ΔKE = -150 J + 250 J = 100 J.

The kinetic energy of the baseball is given by KE = 1/2 mv^2, where m is its mass and v is its velocity. Plugging in the given values, we get KE = 1/2 (0.150 kg) (30.0 m/s)^2 = 67.5 J.

Learn more about work done on:

https://brainly.com/question/8119756

#SPJ1

Answer:

0.33m/\(s^{2}\) East.

Hope this helps you. Do mark me as brainliest.

Answer:

Let the mass of mercury  m= 13.6 gm and volume be V=1cm3.

Now change in volume when it is heated upto 50oC,

ΔV=VαΔT

ΔV=1×1.82×10−4×50

ΔV=91×10−4cm3 

New volume V1=V+ΔV=1.0091cm3

New density ρ=V1m=1.009113.6=13.48gcm−3

Explanation:

Mark me as a brainliest please

(a) The mass of the puck is 0.16 kg

(b)  The amplitude of the oscillation is 4.3 cm.

The mass of the puck is calculated by applying the formula for the period of the oscillation.

T = 2π √ ( m /k )

T / 2π = √ ( m /k )

T² / 4π² = m/k

m = k ( T² / 4π² )

where;

The mass of the puck is calculated as;

m = 4.5 ( 1.2² / 4π²)

m = 0.16 kg

The amplitude of the oscillation is calculated as follows;

a = ω²A

where;

ω = √ ( k /m )

ω² = k / m

from this equation "a = ω²A" make amplitude "A" the subject of the formula.

A = a / ω²

A = (a) / (k / m)

A = ( 1.2 ) / ( 4.5 / 0.16)

A = (1.2) / ( 0.03556)

A = 0.043 m = 4.3 cm

Learn more about amplitude here: https://brainly.com/question/3613222

#SPJ1

0.116 rad/s is the angular speed in radians, during the time interval from 0.75 s to 14.2 s

ω=Δθ/Δt

Δθ= 90° = 1.571rad

Δt=13.45

ω=1.571/13.45

ω=0.116 rad/s

The rate of change of angular displacement, or the angle a body travels along a circular path, is the definition of angular speed. Calculating angular speed involves dividing the quantity of rotations or revolutions made by a body by the amount of time required. Omega is a Greek letter that represents angular speed. The SI's angular speed unit is rad/s.

As is well known, angular speed is determined by dividing the rate of displacement change by the time. As a result, the angular speed equation is = /t. Despite the procedure stated above, a different and more well-liked formula is used to determine angular speed in competitive testing. As ω = θ/t

To know more about angular speed visit : brainly.com/question/16407861

#SPJ9

The vectors addition permits locating the perfect result for the sum of the two vectors in option B).  See attached and the vector is directed to the right and up.

Vector addition is the operation of adding or extra vectors together into a vector sum. The so-known as parallelogram regulation gives the rule for vector addition of or greater vectors. for two vectors and, the vector sum is received via placing them head to tail and drawing the vector from the loose tail to the unfastened head.

A vector is an amount or phenomenon that has impartial residences: importance and direction. The time period also denotes the mathematical or geometrical representation of the sort of quantity. Examples of vectors in nature are velocity, momentum, force, electromagnetic fields, and weight.

Vectors are used in technological know-how to describe something that has a direction and a magnitude. they're commonly drawn as pointed arrows, the length of which represents the vector's importance

Disclaimer: your question is incomplete, please see below for the complete question.

The image shows the complete question.

Which vector is the sum of vectors à and b?

Learn more about vectors here:- https://brainly.com/question/25705666

#SPJ9

We have that  the magnitude of the reaction force at the point. is

Pv=3832N

From the question we are told

18] (b) The diagram below shows a uniform beam pivoted at P. The force of gravity on the beam is 425 N. 23" 3.4 m -8.4 m 720 N Determine the magnitude of the reaction force at the point.

Generally the equation for the Resolutions  is mathematically given as

\(\sum y=0\\\\Where\\\\Pv+Tsin23=720\\\\Pv=720-Tsin23\)

\(\sum x=0\\\\720*8.4=Tsin23 *3.4\\\\6048=3.4Tsin23\\\\T=4553N\)

Therefore

the magnitude of the reaction force at the point. is

Pv=3832N

For more information on this visit

https://brainly.com/question/12319416

Answer:

46.5 N

Explanation:

attached is explanation

(C)

...........................

Answer:

Hope this helps!

Explanation: