Which features do sound waves have that ocean and light waves do not? Check all that apply.

compression
rarefaction
amplitude
wavelength
crests
frequency
speed

Answer:

The true statement is;

Neither momentum or kinetic energy is conserved

Explanation:

The question relates to the verification of the conservation of linear momentum, and kinetic energy

The given parameters are;

The mass of each astronaut = 100 kg

From which, we have;

The mass of the moving astronaut, m₁ = 100 kg

The mass of the stationary astronaut, m₂ = 100 kg

The initial velocity of the moving astronaut, v₁ = 5 m/s

The initial velocity of the stationary astronaut, v₂ = 0 m/s

The final velocity of both astronauts, v₃ = 3 m/s

The sum of the initial momentum of both astronauts is given as follows;

[tex]P_{initial}[/tex] = m₁·v₁ + m₂·v₂ = 100 kg × 5 m/s + 100 kg × 0 m/s = 500 kg·m/s

[tex]P_{initial}[/tex] = 500 kg·m/s

The sum of the final momentum of the astronauts is given as follows;

[tex]P_{final}[/tex] = m₁·v₃ + m₂·v₃ = (m₁ + m₂) × v₃ = (100 kg + 100 kg) × 3 m/s = 600 kg·m/s

[tex]P_{final}[/tex] = 600 kg·m/s

∴ [tex]P_{initial}[/tex] = 500 kg·m/s ≠ [tex]P_{final}[/tex] = 600 kg·m/s

[tex]P_{initial}[/tex] < [tex]P_{final}[/tex], therefore, the sum of the linear momentum of both astronauts is not conserved

The sum of the initial kinetic energy of each astronaut is given as follows;

[tex]K.E._{initial}[/tex] = 1/2·m₁·v₁² + 1/2·m₂·v₂² = 1/2 × 100 kg × (5 m/s)² + 1/2 × 100 kg × (0 m/s)² = 1250 Joules

[tex]K.E._{initial}[/tex] = 1250 Joules

The sum of the final kinetic energy of the astronaut is given as follows;

[tex]K.E._{final}[/tex] = 1/2·m₁·v₃² + 1/2·m₂·v₃² = 1/2 × 100 kg × (3 m/s)² + 1/2 × 100 kg × (3 m/s)² = 900 joules

[tex]K.E._{final}[/tex] = 900 joules

[tex]K.E._{initial}[/tex] > [tex]K.E._{final}[/tex], therefore, the kinetic energy is not conserved

From which we get that neither momentum or kinetic energy is conserved.

Answer:

frequency is equal to the wavelength multiply by the speed of light

Explanation:

wavelength multiply by the speed of light Will give you the frequency

Answer:

below

Explanation:

1.1115 im not sure tho

Explanation:

Given

Mass(M) = 80,000 kg

Acceleration (a) = 35 m/s²

Force (F) = ?

We know we have the formula

F = m * a

= 80000 * 35

= 2800000

= 2.8 * 10 ^ 6 N

The force is 2.8 * 10 ^ 6 N.

Hope it will help :)❤

If a rocket has a mass of 80,000 kg and accelerates at a rate of 35 m/s2.  then the force that provides this acceleration would be 2800000 Newtons.

Newton's Second Law states that The resultant force acting on an object is proportional to the rate of change of momentum.

The mathematical expression for Newton's second law is as follows,

F = m*a

As given in the problem we have to find the force that provides the acceleration of 35 meters / second², if the  rocket has a mass of 80,000 kg,

The force acting on the rocket =  80,000 × 35

                                                   = 2800000 Newtons

Thus, the force acting on the rocket would be 2800000 Newtons.

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Answer:

C. The amount of matter it has

Answer:

-2 m/s

Explanation:

The computation of the acceleration of the block is as follows:

The volume of the block is

V = 1kg ÷ 1,000 kg/m^3 = 1 ÷ 1,000 m^3

Now at the time of submerging in the oil

Net force is

[tex]m_g - F_B = m \times (-a)\\\\m_g - v\times S_{oil} \times g = -ma\\\\a = (\frac{v}{m} \times S_{oil} - 1) g\\\\= (\frac{1}{1000} \times 0.8 \times 1000 -1 ) \times 10\\\\[/tex]

= -2 m/s

Answer:

32200

6*5370

Explanation:

Answer:

b 8W

Explanation:

i dont know u find out

Answer:

B. 8 I believe that this is the answer

Answer:

where is the box? how can we answer if your question is lack given? how do we know what box is it your talking about

Answer:

O Distance​

Explanation:

With the given information, it is possible to find the distance of the car has traveled on the home from school.

This is possible because distance is the length of path a body covers.

From the given values:

  Distance  = 5208  - 5200  = 8miles

It is not possible to find the displacement because no direction was given.

Also velocity is not possible since the time frame of travel was not state.

Answer:

so the answer is number one which is A

Answer:

i think it's 1400

Explanation:

w = Force x displacement

w = 400 x 3.5

When electricity moves through a metal wire, the wire is option B. A conductor.

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Answer:Cs

Explanation: for this one 92-37 is 55

B and C are both true statements.

Answer:

1) Changing value

2) The velocity is decreasing for upward motion and increasing for downward motion due to gravitational force

Explanation:

1) A trajectory is the motion of an object which is being acted upon by specified forces. The flight path of an object in projectile motion is its trajectory

During the course of a trajectory, the vertical component of the velocity, [tex]v_y[/tex], is a changing value

2) The vertical component of the velocity first decreases, during the upward motion, according to the following equation;

[tex]v_y[/tex] = [tex]u_y[/tex] - g·t

Where;

[tex]v_y[/tex] = The vertical component of the velocity after a given time, t

[tex]u_y[/tex] = The initial vertical velocity

t = The time of motion of the trajectory

g = The acceleration due to gravity ≈ 9.8 m/s²

When the vertical velocity of the object decreases to zero, which is the point at which the object reaches the maximum height of its motion, the direction of the vertical motion of the object reverses, and object begins to accelerate and increase its velocity downwards according to the following equation;

[tex]v_y[/tex] = [tex]u_y[/tex] + g·t

Therefore, the velocity of the object is decreasing on its way up, and then increasing on its way down.

Answer:

there is no image to go off of. If you could share that I would be happy to help.

Explanation:

Please share the image!

Answer:

impulse = 8820 kg·[tex]\frac{m}{s}[/tex] or 8820 N·s

Explanation:

Impulse J is equal to the average force [tex]F_{av}[/tex] multiplied by the elapsed time Δt or in equation form, J = [tex]F_{av}[/tex]Δt

As long as your force of 450 N is constant then that value is your average force [tex]F_{av}[/tex] and your elapsed time is 19.4 seconds.

Multiply these values.

You will get an impulse of 8820 kg·[tex]\frac{m}{s}[/tex] or 8820 N·s.

Answer:

During the experiment, alpha particles bombarded a thin piece of gold foil. The alpha particles were expected to pass easily through the gold foil. ... The discovery of the nucleus was a result of Rutherford's observation that a small percentage of the positively charged particles bombarding the metal's surface...

Explanation:

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Rutherford's model of atoms describes the atom as a tiny, dense particle which contains a positively charged nucleus with electrons which are negative charged moving in orbitals.

Rutherford's model of atoms described the atom as a tiny, dense, positively charged core particle which is called a nucleus, in which nearly all the mass of the atom is concentrated, around within the nucleus which the light, negative constituents, called electrons, circulate at some specific distance, much like the planets which are revolving around the Sun.

During the Rutherford's experiment, the alpha particles are bombarded on the thin piece of gold foil. The alpha particles were expected to pass easily through this gold foil. The discovery of the nucleus of atom was a result of the Rutherford's observation in which a small percentage of the positively charged particles that is protons bombarding on the metal's surface.

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i

the pencil appears to be bent when dipped in water because the reflected light ray from the immersed part of the pencil refracts when travels from water to air. however, it appears to be bent because our eyes expect light to travel in straight line

Answer: 36 m/s

Explanation:

Wave speed = Wavelength * Frequency

12 * 3 = 36 m/s

Answer: 36 m/s

Explanation:

Answer:

Sodium phosphide

Explanation:

Answer:

sodium phosphide

Explanation:

i just took the test. Good luck!! Have a great day!!

Answer:

Explanation:

[tex]V^2=V^2_o+2a(x_f-x_i)[/tex]

[tex]28^2=20^2+2a(50)\\784=400+100a\\384=100a\\a=3.84m/s^2[/tex]

Answer:

A contact force is any force that requires contact to occur. Contact forces are ubiquitous and are responsible for most visible interactions between macroscopic collections of matter. Pushing a car up a hill or kicking a ball across a room are some of the everyday examples where contact forces are at work.

Answer:

Em = 30 J

Explanation:

The principle of conservation of mass and energy is one of the most important in physics, it establishes that energy cannot be created just by transforming it.

Therefore, the mechanical energy at a point is the same throughout the movement, only in some parts it will be kinetic, in others potential and in the intermediate points a mixture of the two, but the total value is always the same.

           Em = K + U

            Em = 17.5 + 12.5

            Em = 30.0 J

At the point just before touching the ground the mechanical energy is the same Em = 30 J

Answer:

Explanation:

Force = Mass*Acceleration

Remember this formula because its one of the most used formula in all of physics.

250N = 80kg*Acceleration

a = 3.125 m/s^2

There would definitely be friction because of the water, but since this says high school physics, you prolly can assume it to be negligible

Answer:

the Answer is B

because the purpose of experimental conclusion it is to prove rather is a right or wrong is a hypothesis is right or wrong

Answer:

C. not enough mass

Explanation:

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