what is the wavelength of a 28Hz periodic wave at 10 meters per second?

[tex]\\ \rm\Rrightarrow x=\dfrac{2mg}{k}[/tex]

[tex]\\ \rm\Rrightarrow x=\dfrac{2(1.5)(9.8)}{1200}[/tex]

[tex]\\ \rm\Rrightarrow x=\dfrac{3(9.8)}{1200}[/tex]

[tex]\\ \rm\Rrightarrow x=\dfrac{9.8}{400}[/tex]

[tex]\\ \rm\Rrightarrow x=0.0245m[/tex]

2.45cm is distance

Use the work-energy theorem. The total work W performed on the car as it it slows to a stop is equal to the change in the car's kinetic energy ∆K. So

W = ∆K

W = 0 - 1/2 (1000 kg) (72 km/h)²

W = - (500 kg) (20 m/s)²

W = - 200,000 J = -2 × 10⁵ J

The closest answer would be C, but friction opposes the car's motion so the work would be negative.

Answer:

c

Explanation:

Friction is caused by how rough and object is, and how much the object weighs, as this causes it to drag more.

Examples of digital signals are Computers, Digital Phones, Digital pens, etc.

Signal is defined as an electromagnetic wave that carries information through a medium. In this, the data is converted into electromagnetic signal which may be analog or digital and then sent from sender to receiver.

Signal which are discrete are known as digital signals.

Examples of digital signals are Computers, Digital Phones, Digital pens, etc.

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Answer:

Examples of digital signals are Computers, Digital Phones, Digital pens, etc.

A digital signal is a signal that represents data as a sequence of discrete values. A digital signal can only take on one value from a finite set of possible values at a given time. With digital signals, the physical quantity representing the information can be many things: Variable electric current or voltage.

Answer:    Advantages of following the soft path, the argument here is alternative sources of power such as hydropower, geothermal energy , wind energy , and photovoltaic cells must be developed. This provides a alternative source to remain in a healthy environment and also function as the society we currently live in using the hard path.  Disadvantages of following the hard path result with future generations fearing over the irreversible damage of climate change and the damage done to our atmosphere. The hard path argue that we should continue to operate in the future as we have in the past, except more efficiently. This is close to impossible and will only continue the negative effects the hard path( the path we have been following) results in. The major shift determines the outcome of this world, the futures worries or reliefs and ultimately the survival of humans.

x max = (vi² sin 2α) / g

x max = (6.25² sin 90)/10

x max = 39.0625/10 = 3.91 m

The increase in temperature that will result if 225.0 g of copper absorbs 5000 J of heat energy is 57.72°C.

The temperature change of a substance can be calculated using the following formula:

Q = m × c × ∆T

Where;

5000 = 225 × 0.385 × ∆T

5000 = 86.63∆T

∆T = 5000/86.63

∆T = 57.72°C

Therefore, the increase in temperature that will result if 225.0 g of copper absorbs 5000 J of heat energy is 57.72°C.

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Answer:

G M m / R^2 = m v^2 / R     centripetal force = force of attraction

R = G M / v^2         radius of satellite orbit

R = 6.67E-11 * 5.98E24 / 5000^2

R = 6.67 * 5.98 / 25 * 10^7 m = 1.60 * 107 m = 16 * 10^6 m

Radius of earth = 6.37 * 10^6 m

H = R - r = (16 - 6.4) * 10^6 m = 9.6 * 10^6 m

Answer:

90%

Explanation:

if you lose 10% of a 100 you get 90

A net forward force as well as gravitational force pulls the marble downwards whereas frictional force slows it down.

A force is an agent which causes a change in the motion or state of an object.

Forces are of two types:

Andrew applies force on the marble causing it to move.

When Andrew pokes the marble, he gives it net forward force. As the marble rolls down the ramp, gravitational force pulls it down.

The movement of the marble is slowed down by frictional force from the ramp.

Therefore, a combination of applied force and gravitational force moves the marble forward, while frictional force slows it down.

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Answer:

Applied, Gravitational, and Frictional.

Explanation

hope it helps :)

The correct answer from each drop-down menu is thermal energy moves from A to B by conduction the heat transfer will continue until the liquid in B reaches the same temperature as the liquid in A.

Good thermal conductors have an atomic or molecular arrangement that has the property of transferring heat to nearby atoms or molecules until the entire object is in thermal equilibrium. To understand better, let's take a metal bar as an example, which is a good thermal conductor.

In this case, the  thermal energy moves from A to B by conduction the heat transfer will continue until the liquid in B reaches the same temperature as the liquid in A.

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To minimize the energy loss due to over heating of the solar panel use resistors in parallel arrangement.

The amount of energy dissipated in a circuit is determined using the following formulas;

P = I²Rt

where;

Thus, to minimize the energy loss due to over heating of the solar panel use resistors in parallel arrangement.

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Answer:

there is.loss.of water

in rainy season

in thundering

etc.

Answer:

.5097

Explanation:

Original KE = 1/2 (100)(20)^2 = 20 000 J

the force of friction must work this hard to stop the object in 40 m

Ff  *40 = 20 000  

Ff = 500 =   Fn u         u = coeff of kinetic friction

       500 = (100)(9.81) u

           u = .5097

The kinetic friction coefficient between the object and the ground is 0.5097.

The friction force to normal force ratio experienced by a body moving on a dry, non-smooth surface is denoted by the kinetic friction coefficient k.

Formula :

μk = [tex]\frac{Ff}{Fn}[/tex]

Therefore,

Original KE = 1/2 (100)(20)^2 = 20 000 J

the force of friction must work this hard to stop the object in 40 m

Ff  × 40 = 20 000  

Ff = 500 =   Fnμ       μ = coeff of kinetic friction

      500 = (100)(9.81) μ

          μ = 500/(100 x 9.81)

          μ = .5097

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Answer:

A

Explanation:

THAT is th equation for Potential Energy

The amplitude of the resultant wave when two sound waves with equal amplitude constructively interfere, will be twice than the amplitude of each wave.

A constructive interference occurs when two sound waves with equal amplitude moving in the same direction collide which each other, forming a single wave (resultant wave) with a higher amplitude.

Thus, we can conclude that the amplitude of the resultant wave when two sound waves with equal amplitude constructively interfere, will be twice than the amplitude of each wave.

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Answer:

yes quite a few people love eating Pineapple on pizza

Answer:

yes, if you want pineapple be in pizza

Answer:Visible lighlight

Explanation:

Answer:

B

Explanation:

Depends Mostly on bonds electrolysis can be used, chemical bonding like additional of water or by heating back to their elements.

Answer:

7.36 j

Explanation:

PE = m g  h    so just mutiply the given values   .5 * 9.81 *1.5 = 7.36 j

  (assuming 1.5 is in meters)

Answer:

F = M a

F = 2350 kg * 2 m/s^2 = 4700 Newtons

That is in addition to the force of

F = 2350 * 9.8 m/s^2 = 23,030 N needed for a stopped elevator

The statement a,d and e are correct. The chemical equation must be balanced.

One or more compounds, known as reactants, are transformed into one or more distinct substances, known as products. Such a process is known as a chemical reaction.

The given equation is;

[tex]\rm CH_4+2O_2 \arrow \rightarrow CO_2+2H_2O[/tex]

The statements that apply in order to complete the model is;

a) The products must equal the reactants.

d) One carbon atom and two oxygen atoms are needed to balance the equation.

e) One carbon dioxide molecule should be added to the product side of the equation.

Hence, statement a,d and e are correct.

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Answer:

A force of μk⋅60N is needed to keep a 60-newton rubber block moving across level, dry asphalt in a straight line at a constant speed.

Explanation:

Answer:

Insulators such as glass, mica, rubber or plastic used to coat metals and other conductors help stop or reduce the flow of electrical current. This helps prevent shock, fires, and short circuits.

Explanation:

Water cycle basically involves the change of water into liquid to vapour and again to liquid states through a cyclic manner .

The answers are