Please help me with science! :,)

Answer:

because the bowling ball has a heavier mass, it will have more energy on the decent

Explanation:

Answer:

C. 0.50 m

Explanation:

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The amplitude of the vibration with the given equation, y = (0.50) cos (π/2 ×t) is 0.50 m. Thus, option C is correct.

Simple Harmonic motion is defined as the periodic motion of the body resulting from the dynamic equilibrium. It is defined as the motion in which the restoring force is directly proportional to the displacement of the body.

Simple Harmonic Motion is defined as the repetitive back-and-forth motion of the central displacement. The maximum displacement of one side is equal to the maximum displacement of the other side.

The simple harmonic motion. F ∝ -x or a ∝ -x, where F is force and a is the acceleration of the body, and x is the displacement. The maximum displacement of the body is called the amplitude of the motion.

The energy is purely kinetic at its mean positions whereas the energy is purely potential at its extreme ends. The harmonic motion is also called oscillatory motion.

From the given, SHM equation, y = A sin(ωt) where A is the amplitude of the wave and ω is the angular frequency of the wave. In the cosine function,  y = A cos(ωt + Ф) where Ф is the phase change.

Thus, the amplitude of the vibration is 0.50 m. Hence, the correct option is C.

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Answer:

20

Explanation:

W = F*d

400 = 20*d

d = 20

Answer:

 m = 1,429 10⁻⁴ kg

Explanation:

For the object to remain floating, the translational equilibrium condition must be met, we set a reference system where the vertical upward direction is positive

          F_e -W = 0

          F_e = W

          q E = m g

we clear

         m = [tex]\frac{qE}{g}[/tex]

let's calculate

        m = [tex]\frac{7 \ 10^{-6} \ 200}{ 7 }[/tex]

        m = 1,429 10⁻⁴ kg

Answer:

The change in pitch of a siren on an ambulance

Answer:

Explanation:

The drop in pitch of ambulance sirens as they pass by and the shift in red light are common examples of the Doppler Effect.

Answer:

A compass can detect a magnetic field and show its direction. Iron filings can show the shape of a magnetic field. A gaussmeter can detect a field and indicate its strength.

Explanation:

Answer:

Transverse wave, motion in which all points on a wave oscillate along paths at right angles to the direction of the wave's advance. Surface ripples on water, seismic S (secondary) waves, and electromagnetic (e.g., radio and light) waves are examples of transverse waves.

Answer:

Transverse wave, motion in which all points on a wave oscillate along paths at right angles to the direction of the wave's advance. Surface ripples on water, seismic S (secondary) waves, and electromagnetic (e.g., radio and light) waves are examples of transverse waves.

Explanation:

Examples of transverse waves include:

ripples on the surface of water.

vibrations in a guitar string.

a Mexican wave in a sports stadium.

electromagnetic waves – eg light waves, microwaves, radio waves.

seismic S-waves.

Answer:

the answer is B

Explanation:

edg 2020

Answer:

a sense of industry

Explanation:

I just had this question and got it right

Answer:

kg•m^2/s^3

Explanation:

Here, we want to get the valid unit for power

Mathematically, power is time rate of doing work

Work is the product of force and distance

Unit for force is;

kg•ms^-2

work is;

Kg•ms^-2 • s

= kg•m^2•s^-2

Divide through by the s for time;

we have ;

kg•m^2•s^-2/s

kg•m^2•s^-3

And that is;

kg•m^2/s^3

Answer:

391.67Hz

Explanation:

The fundamental frequency formula in string is expressed as;

Fo = V/2L

V is the velocity of the wave = 329m/s

L is the length of the string = 42cm = 0.42m

Substitute

Fo = 329/2(0.42)

Fo = 329/0.84

Fo = 391.67Hertz

Hence the  fundamental frequency of a mandolin string is 391.67Hz

Answer:

The answer is Resistance

Answer:

Resistance

Explanation:

it opposes the flow of energy

Answer:

i dont really know, sorry

Explanation:

Speed = 540 miles/hr

= (540 x 1.609) km/hr

= 868.86 km/hr

Distance = Speed x Time

= 868.86 x 1 / 2

= 434.43 km

Answer:

The electric force is directly proportional to the amount of Charge.

Explanation:

We define the electric force as the attractive or repulsive interaction between any two charged objects in an electric field.

The electric field is investigated by measuring the force on a small positive test charge. This charge is so small that it does not significantly alter the field after testing.

An object having a greater electric charge will exert a greater force on an object than an object having a smaller electric charge.

Hence the electric force is directly proportional to the amount of Charge.

Answer:

Centripetal acceleration = 8m/s²

Explanation:

Given the following data;

Radius, r = 2m

Velocity = 4m/s

To find the centripetal acceleration;

Centripetal acceleration = V²/r

Substituting into the equation, we have;

Centripetal acceleration = 4²/2

Centripetal acceleration = 16/2

Centripetal acceleration = 8m/s²

Therefore, the dog's centripetal acceleration is 8 meters per seconds square.

Answer:

P = 10 Watts

Explanation:

Given that,

The voltage of a mobile charger, V = 5 V

Current, I = 2 A

We need to find the power of the charger. The formula for the electric power is given by:

P = VI

So,

[tex]P=5\ V\times 2\ A\\\\P=10\ W[/tex]

So, the power of the mobile charge is 10 watts.

Answer:

A

Explanation:

I took the test on progress learning and got it right.

If we increase the velocity of an object by 1 meter per second, as a result the kinetic energy of the object will increase as velocity is directly proportional to the kinetic energy.

The kinetic energy of an object is the energy which the object possesses due to its motion. Kinetic energy is defined as the work which is required be done to accelerate an object of a given mass from the state of rest to its stated velocity.

Kinetic energy is the energy possessed by an object due to its motion. Potential energy is the form of energy which is possessed by an object due to the position or state. Kinetic energy is directly proportional to the mass and velocity of the object. Therefore, if we increase the velocity of an object, then kinetic energy of the object will increase.

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Answer:

Decrease

Explanation:

If you were on the Moon, which has significantly less mass than the Earth, your weight would: decrease

The point that seemed to be giving me a complicated time was being able to distinguish the difference and meaning of weight and mass and being able to apply that to a problem. I kept mixing up the definitions. For example in homework 3.1, one question asked:

If you were on the moon, which has significantly less mass than the earth, your mass would:

a. increase

b. decrease

c. stay the same

d. become zero

The definition of mass is the amount of matter in an object. The definition of weight is the amount or unit of force. For me, I just had to remember that when it asked about weight, it wasn’t referring how heavy an object is. After I was able to recognize that when it came to weight, questions became easier.

The final and correct answer was decreasing. The answer is because the Moon’s mass is less. This means the gravitational force is less on your body, therefore, your mass is going to be lighter

Answer:

Toaster

Explanation:

A toaster draws electric current (electrical energy) from a wall outlet and converts these moving electric charges into heat (thermal energy) in the filaments that turn red hot to cook your toast. ... As electricity runs through the filaments in a space heater, the electrical energy is converted into heat (thermal energy).

Answer:

A

Explanation:

Put A, It will help you.

Answer:All three states of matter (solid, liquid and gas) expand when heated. ... Heat causes the molecules to move faster, (heat energy is converted to kinetic energy ) which means that the volume of a gas increases more than the volume of a solid or liquid.

Explanation:well I tried lol she just copied and pasted faster than I could

Answer:

The answer is B. hope this helps

Explanation:

Answer: v = 0.6 m/s

Explanation: Momentum Conservation Principle states that for a collision between two objects in an isolated system, the total momentum of the objects before the collision is equal to the total momentum of the objects after the collision.

Momentum is calculated as Q = m.v

For the piñata problem:

[tex]Q_{i}=Q_{f}[/tex]

[tex]m_{p}v_{p}_{i}+m_{s}v_{s}_{i}=m_{p}v_{p}_{f}+m_{s}v_{s}_{f}[/tex]

Before the collision, the piñata is not moving, so [tex]v_{p}_{i}=0[/tex].

After the collision, the stick stops, so [tex]v_{s}_{f}=0[/tex].

Rearraging, we have:

[tex]m_{s}v_{s}_{i}=m_{p}v_{p}_{f}[/tex]

[tex]v_{p}_{f}=\frac{m_{s}v_{s}_{i}}{m_{p}}[/tex]

Substituting:

[tex]v_{p}_{f}=\frac{(0.54)(4.8)}{(4.4)}[/tex]

[tex]v_{p}_{f}=[/tex] 0.6

Immediately after being cracked by the stick, the piñata has a swing speed of 0.6 m/s.

Answer:

If there is a net force acting on an object, the object will have an acceleration and the object's velocity will change. ... Newton's second law states that for a particular force, the acceleration of an object is proportional to the net force and inversely proportional to the mass of the object.

Explanation:

If the motion of an object changes, the net force on the object is greater than zero or the forces acting on the object is unbalanced.

According to Newton's second law of motion, the force applied to an object is directly proportional to the product of mass and acceleration of the object. The object will move in the direction of the applied force.

When the net force on an object is zero, the object will be remain at rest.

However, when the net force on object is greater than zero, the object will move in the direction of the greater force.

Thus, we can conclude that if the motion of an object changes, the net force on the object is greater than zero or the forces acting on the object is unbalanced.

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Answer:

non uniform speed

hope it helps

The speed, the following scenario depicts is non uniform speed. According to the values given in the question, average speed can be 2.083 m/s.

When the speed is changing with respect to time, the speed is called as the non uniform motion.

Jennifer is traveling on her bike to the park. The speed is firstly slow, then increases. The distance traveled is 1000 m and time taken is 8 min, so the average speed will be

average speed = total distance / total time taken

average speed = 1000 /(8x 60)

average speed = 2.083 m/s

Thus, the speed, the following scenario depicts is non uniform speed. The average speed is 2.083 m/s.

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