A wave with a frequency of 30 Hz has a wavelength of 40.5 m. How fast is the wave traveling?

An incredibly dense star so massive that light cannot escape from its surface is called a Black Hole.

Black Hole, is an incredibly dense star so massive that light cannot escape from its surface.

Black hole is the region in space where the gravity is maximum indicating no particle can escape from it.

It is formed from the start debris that died in the explosion.

It creates deep stinks of gravity that even light cannot escape from it.

It was discovered by John Michell. It is believed that the universe may have originated from the black hole only.

They roam among the stars of the Milkyway galaxy

Black holes live for infinite number of years which is like the age of the universe.

Earth would never fall into the black hole but if it does then even earth cannot escape from falling.

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Using momentum conservation

Final momentum equals initial momentum

m u + M U = (m + M) V

1500 × 1.5i + 3200 × (-8.7)j = (1500+3200)V

V = (2250i - 27840j) / 4700

When they come together, their final velocity is 0.4787 i - 5.9234 j.

​The change in momentum of colliding bodies is what causes their impulses. As a result, for colliding bodies, changes in momentum are always equal and opposing. When one body's momentum increases, the other's momentum must decrease by an equal amount. The momentum is always preserved as a result.

The principle of momentum conservation argues that within a given problem domain, momentum is never created nor destroyed but only modified by the action of forces as they are represented by Newton's laws of motion.

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Answer:

Conduction is the transfer of kinetic energy from one particle to another

Answer:

a.its simply radaition

Explanation:

hope it helps you..

follow me for more help sir:)

Answer:

Girl its Radiation

Hope this helps you!!

A zero error occurs when the balance reading is not accurate, and the pointer on the balance scale does not rest on the zero mark when there is nothing on the pan. This could happen due to several reasons, such as a misaligned pointer or an uneven surface.

What is zero error?

Zero error is a term used to describe a type of error that can occur when using a measuring instrument, such as a balance, a ruler, or a thermometer. Specifically, zero error refers to a situation where the instrument, when it should read zero, actually reads a value other than zero.

For example, if a balance is improperly calibrated, its pointer or digital display might not show zero when there is nothing on the pan. Instead, it might show a small positive or negative value, even though there is no weight present. This error is called zero error.

Zero error can occur due to several factors, such as mechanical wear and tear, temperature changes, or incorrect calibration. It is important to correct zero error to ensure that measurements are accurate and reliable.

If readings have already been taken with a balance that has a zero error, the following steps can be taken to correct the error:

First, check the balance's instruction manual to determine the method of correction. Some balances have a button or a knob that can be used to adjust the zero position.

If the balance has a button or knob, turn it until the pointer rests exactly on the zero mark. This will correct the zero error.

If the balance does not have a button or knob, a manual correction can be made by adding or removing small weights from the balance pan until the pointer rests exactly on the zero mark.

After correcting the zero error, it is essential to recheck the balance reading with a known weight to ensure that it is now accurate.

Finally, record the correction in a logbook or other record-keeping system to ensure that it is not forgotten or overlooked in the future.

It's important to note that zero error should be corrected before taking any readings as it could lead to inaccurate measurements.

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Answer:

kid

Explanation:

Answer:

Reflected

Explanation:

During the process of reflection whatever that is sent forth e.g light comes back (reflects)

Answer:

transmitted

Explanation:

took quiz

Answer:

A or D

Explanation:

Think of it like this to Same sided pole magnet the closer you get to the other magnet the harder it is able to touch now if she is experiencing air resistance it would be harder to fall,but at 1 second she will experice the most exploration because there will be no air resistance so as she fall she will gain speed

Answer:

Im pretty rusty with this stuff, personally I'd say B, but wait for someone else to answer this or reply to my answer. I don't remember a lot of this type of stuff so... Hope this helps :)

Explanation:

To fit a model with ozone (O3) as the response variable and temperature (Temp), humidity, and IBH (Inversion Base Height) as predictors, and determine the best transformation on the response using the Box-Cox method, you can follow these steps:

Load the ozone dataset:

Explore the data:

Perform the Box-Cox transformation:

Transform the response variable:

Fit the regression model:

Evaluate the model:

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Answer: (C) +1

Explanation:

Neutrons have no charge, so we can ignore them in this problem. Protons have a 1+ charge, and electrons have a 1- charge. So, the total charge is 10(+1) + 9(-1) = +1.

Answer:

1144.8

Explanation:

1 meter per second is equal to 3.6 kilometers per hour

The initial velocity of the car as it slow to rest with an acceleration of -5 m/s² is 11.5 m/s.

This can be defined as the ratio of displacement to the time of a body

To calculate the initial velocity of the car, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence the initial velocity of the car is 11.5 m/s

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Answer:

a. y = (tanθ)x - 1/2gx²/(v₀cosθ)²

b. Range R = v₀²sin2θ/g

c. Time of flight T = 2v₀sinθ/g

Explanation:

a. Show that the path followed by the object is parabolic

Let the vertical component of its velocity be v₁ = v₀sinθ and the horizontal component of its velocity be v₂ = v₀cosθ where v₀ = initial velocity of the projectile.

Now, for its vertical displacement Δy = v₁t - 1/2gt²   (1)

Its horizontal displacement Δx = v₂t  (2)

From (2) t = Δx/v₂

Substituting t into (1), we have

Δy = v₁(Δx/v₂) - 1/2g(Δx/v₂)²

= (v₁/v₂)Δx - 1/2g(Δx)²/(v₂)² =

= (v₀sinθ/v₀cosθ)Δx - 1/2g(Δx)²/(v₀cosθ)²  

If we assume the initial position is at the origin, then Δx = x - 0 = x and Δy = y - 0 = y. So,

y = (tanθ)x - 1/2gx²/(v₀cosθ)² .

This is the required equation and it is a quadratic equation in x. Thus, the path followed by the projectile is parabolic.

b. The Range, R

The range, R is obtained when y = 0

So, 0 = (tanθ)x - 1/2gx²/(v₀cosθ)²

[(tanθ) - 1/2gx/(v₀cosθ)²]x = 0

x = 0 or (tanθ) - 1/2gx/(v₀cosθ)² = 0

x = 0 or (tanθ) = 1/2gx/(v₀cosθ)²

x = 0 or (tanθ)(v₀cosθ)² = 1/2gx

x = 0 or x = 2(sinθ/cosθ)(v₀cosθ)²/g

x = 0 or x = v₀²(2sinθ/cosθ)/g

x = 0 or x = v₀²sin2θ/g      [sin2θ = 2sinθ/cosθ]

So its range R = x = v₀²sin2θ/g    

c. Time of flight, T

The time of flight, T is obtained from (1) when Δy = 0 and t = T

So, 0 = v₁T - 1/2gT²

(v₁ - 1/2gT)T = 0

T = 0 or (v₁ - 1/2gT) = 0

T = 0 or v₁ = 1/2gT

T = 0 or T = 2v₁/g = 2v₀sinθ/g

So, the time of flight T = 2v₀sinθ/g

Answer:

Given that

speed u=4*10^6 m/s

electric field E=4*10^3 N/c

distance b/w the plates d=2 cm

basing on the concept of the electrostatices

now we find the acceleration b/w the plates  to find the horizontal distance traveled by the electron when it hits the plate.

acceleration a=qE/m=\(1.6*10^{-19}*4*10^3/9.1*10^{-31} =0.7*10^{15}\)=\(7*10^{14}\) m/s

now we find the horizontal distance traveled by electrons hit the plates

horizontal distance

\(X=u[2y/a]^{1/2}\)

=\(4*10^6[2*2*10^{-2}/7*10^{14}]^{1/2}\)

=\(3*10^{-2}\)= 3 cm

Answer:

Your answers are Continental crust and Mountain range.

Explanation:

Continental crust is the first blank, and Mountain range the second.

I hope I helped, and I always appreciate Brainliest!!! :)

Answer:

Explanation:

The time for one complete oscillation will not depend on any of the factors listed. Option D

A pendulum is composed of a string that is vertically suspended and the end of the string has a mass attached to it. The period of the pendulum refers to the umber of oscillations that occur after the pendulum is displaced through  small angle.

Given that the period of a pendulum is;

T = 2π√l/g

T = period of the pendulum

l = length of the pendulum

g = acceleration due to gravity

Hence, the time for one complete oscillation will not depend on any of the factors listed. Option D

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Missing parts;

For a mass suspended on a spring in the vertical direction, the time for one complete oscillation will depend on: a)the value for g (the acceleration due to gravity) b)the distance the mass was originally pulled down c)the maximum speed of the oscillating mass d)the time doesn't depend on any of the above

Answer:

hope it helps

Explanation:

The rule is

\(\boxed{\sf \nu _n=n\nu_1}\)

So

For n=1

\(\\ \rm\Rrightarrow \nu_1=1(120)=120Hz\)

For n=2

\(\\ \rm\Rrightarrow \nu_2=2(120)=240Hz\)

for n=3

\(\\ \rm\Rrightarrow \nu_3=3(120)=360Hz\)

Explanation:

C. Both energy and matter

Orbital velocity of satellite

\(v = \sqrt{ \frac{gm}{r} } \)

Radius of new orbit r' =6r

Thus new orbital velocity of satellite:

\(v = \sqrt{ \frac{gm}{6r} } = \frac{v}{ \sqrt{6} } \)

For satellites in circular orbits, the relationship between orbital velocity and altitude is strict. The task of a satellite launch rocket is to release the satellite at a suitable place in space, with the appropriate speed and direction of movement to put it in the desired orbit.

How a satellite stays in orbit can be thought of in two equivalent ways, both of which explain the relationship between the satellite's altitude and velocity.

The motion of the satellite can be seen as creating a centrifugal force that opposes the gravitational pull. For example, imagine attaching an object to a string and swinging it in a circle. The object is pulling outward against the string, and that outward force (centrifugal force) becomes greater the faster the object swings. At the right speed, the centrifugal force of the satellite due to motion around the earth just balances the gravitational pull, and the satellite remains in orbit.

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As the solid is turned into gas, energy would be added to the solid.

We know that the heating curve has to do with the diagram that shows the way and manner in which the temperature of a body changes as it is converted from solid to gas.  We know that heat is that kind of energy which is able to cause the temperature change of a body.

There are stronger intermolecular interactions that holds the substance together in the solid state than there is in the liquid state. The implication of this is that more energy must be supplied so as to break these strong interactions and take the substances from solid to gas.

In the gaseous state, there is minimum intermolecular interactions and the particles of the substance are moving freely.

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Answer:

8125 Pa

Explanation:

Pressure exerted= Force/ area of contact

we calculate the force he is excerting = mg

= 75 X 10

= 750N

Pressure exerted while standing= 750/0.08

= 9375 Pa

pressure exerted while laying down = 750/0.6

= 1250 Pa

the difference in pressure= 9375 - 1250

= 8125 Pa.

If the current in a long straight wire is increasing, the current is induced in the circular loop will be generated in the nearby circular loop.

Faraday's Law states that the electromotive force (EMF) induced in a circuit is proportional to the rate of change of magnetic flux passing through it. As the current in the straight wire increases, the magnetic field around it strengthens, and the change in magnetic flux through the circular loop causes an induced current. The direction of this induced current is determined by Lenz's Law, which states that the induced current will flow in such a way as to oppose the change in magnetic flux causing it.

In this case, as the magnetic field due to the straight wire increases, the induced current in the circular loop will flow in a direction that generates a magnetic field opposing the increase in the straight wire's magnetic field. The magnitude of the induced current depends on the rate of change of the magnetic field, the loop's size, shape, and distance from the straight wire, as well as the resistance of the loop's material. If the current in a long straight wire is increasing, the current is induced in the circular loop will be generated in the nearby circular loop.

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Answer:

C is the answer

Explanation:

Earth is the third planet from the sun

you are cheating on your test, I know

Answer:

C..

Explanation:

I'm not sure about answer...

Answer:

Explanation:

from t = .3 to t = .33 , velocity appears to be uniform .

uniform velocity = .22 m /s

displacement will be area of the v-t graph which is a rectangle .

= .22 x ( .33 - .3 )

= .22 x .03

= 66 x 10⁻⁴ m

= 6.6 mm .

Answer:

W 1920 N

Explanation:

200kg at a location where g=9.6m/s^2

Answer:

The amount of each gas that can dissolve in the ocean depends on the solubility and saturation of the gas in water. Solubility refers to the amount of a dissolved gas that the water can hold under a particular set of conditions, which are usually defined as 0o C and 1 atmosphere of pressure.

Explanation:

hope this helps

Answer: the motion of the air above the ocean water

Explanation: