a wave's amplitude is 0.5 meters. if its amplitude is increased to 1 meter, how much does its energy change?

A mass of 5 kg is placed at rest on a horizontal surface with a coefficient of static friction of 1.03 and a coefficient of kine

IgorLugansk [536]

Until the object starts to move, the static coefficient of friction must be used since the object is at rest initially. If the horizontal force is large enough to overcome the friction force and the object accelerates, we switch to the kinetic coefficient.
The total downward force in the -y direction is the weight plus the applied 26N:
Fy=mg-26N = 5*-9.81-26 = -75.05N
The maximum friction force here is the magnitude of this force times the static coefficient of friction. This force will point in the opposite direction as an applied horizontal force, no matter which way it points (non conservative forces tend to oppose motion in all directions)
Ff=75.05N*1.03=77.3N
Note this is greater than the applied horizontal x-directed force of 26N. This means the answer is 26N of friction force acting on the object. Why not the full 77.3N? Because that is the maximum amount you can oppose along the x-direction before the object starts to move. But since we are only applying 26N, that is all the friction force pushes back with. This is a statement of Newton's 3rd Law of equal and opposite actions. If the object pushed back with the full 77.3N in this case it would accelerate backward (F=ma), since there would be a net force on the object (77.3N - 26N = 51.3N) This obviously doesn't happen!

4 0

3 years ago

A toy car has a battery-powered fan attached to it such that the fan creates a constant force that is exerted on the car so that

swat32

Procedures <em><u>point C</u></em> could be used to determine how the mass of the fan-car-object system affects the acceleration of the system

<h3>Further explanation </h3>

Newton's 2nd law explains that the acceleration produced by the resultant force on an object is proportional and in line with the resultant force and inversely proportional to the mass of the object

$\large{\boxed{\bold{a=\frac{\sum F}{m}}}$

F = force, N

m = mass = kg

a = acceleration due to gravity, m / s²

we complete the available answer choices

A).Measure the mass of the system using a balance, activate the fan, measure the distance traveled by the system at a known time by using a stopwatch, and repeat the experiment for several trials with different objects added to the carriage.

B) Measure the mass of the system using a balance, activate the fan, use a meterstick and stopwatch to measure the initial and final speeds of the system, and repeat the experiment for several trials with different objects added to the carriage.

C)Measure the mass of the system using a balance, connect a spring scale to the back of the car, measure the amount of force required to hold the system at rest, and repeat the experiment for several trials with different objects added to the carriage.

D)Measure the mass of the system using a balance, activate the fan, use a stopwatch to record the time it takes for the system to travel before the battery of the fan no longer works, and repeat the experiment for several trials with different objects added to the carriage.

From the choices above, we choose point C because to find out the effect of mass on acceleration, we need the force value (F) from the spring scale and the mass of objects of different masses using a balance

If we look at the formula, we can analyze and estimate that the greater the mass given, the smaller the system acceleration

<h3>Learn more</h3>

law of motion

brainly.com/question/75210

displacement of A skateboarder

brainly.com/question/1581159

The distance of the elevator

brainly.com/question/8729508

Keywords : system acceleration, A toy car, fan

#LearnWithBrainly

4 0

3 years ago

Read 2 more answers

A child riding a bicycle at 15 meters per second

kari74 [83]

In this question, all the important information's are already provided. Based on those information's the answer to the question can be easily determined. Let us now note down all the information's given in the question.
Initial velocity (u) = 15 m/s
Acceleration (a) = - 3.0 m/s^2
Time (t) = 4 second.
Then
final velocity (v) = u + at
      = 15 + [(-3.0) * 4]
   = 15 - 12
   = 3 m/s^2
So the final speed of the bicycle would be 3 m/s^2. So the correct option among all the options given in the question is option "3". I hope the procedure is clear to you.

3 0

3 years ago

The goals in an indoor soccer game are worth 3 points<br> TRUE<br> OR<br> FALSE

Brums [2.3K]

False: when i played they were worth 1

6 0

3 years ago

Read 2 more answers

Look at the image and answer my question correctly.

Lyrx [107]

Answer:

Answer is c