A 36 N net force acts on an 9 kg rock. What is the acceleration of the rock? *

Answer:look it up lol

Explanation:

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Answer:

The scientific method is defined as a method of research in which a problem is identified, relevant data is gathered, a hypothesis is formulated from this data, and the hypothesis is empirically tested.

Steps of the Scientific Method

1- Ask a question

2- Do research

3- Make a hypothesis

4- Test your hypothesis with an experiment

5- Analyze the data and make a conclusion

HOPE THIS HELPS AND PLEASE MARK BRAINLIEST!

Two things can happen to old satellites: For the closer satellites, engineers will use its last bit of fuel to slow it down so it will fall out of orbit and burn up in the atmosphere. Further satellites are instead sent even farther away from Earth.

Answer:

Two things can happen to old satellites: For the closer satellites, engineers will use its last bit of fuel to slow it down so it will fall out of orbit and burn up in the atmosphere. Further satellites are instead sent even farther away from Earth.

Explanation:

(A) The direction of electric field in given region is to the left.

(B) The potential difference is -0.46×\(10^{3}\).

(A) When charge is present in any form, a point in space has an electric field that is connected to it. The value of E, often known as the electric field strength, electric field intensity, expresses the strength and direction of the electric field.

Therefore, the direction of electric field in given region is to the left.

(B) The amount of work required to move a unit charge from one point to another point is equal to the potential difference between two points in an electric circuit.

\(V_{B} -V_{A}\) = W / Q

\(V_{B} -V_{A}\) = 2.30×\(10^{-3}\) / -4.9×\(10^{-6}\)

\(V_{B} -V_{A}\) = -0.46×\(10^{3}\)

Therefore,  the potential difference is -0.46×\(10^{3}\).

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The quantity of electric charge in Coulombs that flows through the circuit can be calculated by using the formula Q = I x t, where Q is the charge, I is the current, and t is the time. In this case, the current is given as 10 amperes and the time is 10 seconds. So, Q = 10 A x 10 s = 100 C.

Therefore, the quantity of electric charge (in Coulombs) that flows through the circuit is 100 Cetto find the quantity of electric charge (in Coulombs) that flows through a circuit, we need to use the formula: Charge (Q) = Current (I) × Time (t)
Given that the current (I) is 10 amperes and the time (t) is 10 seconds, we can plug these values into the formula: Q = 10 A × 10 s Q = 100 Coulombs Therefore, 100 Coulombs of electric charge flow through the circuit.

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The device attached to a telescope that allows us to measure the motion of a star toward or away from us is called a spectrograph.

Here's a step-by-step explanation:

Step 1:

Start with a telescope: Telescopes are optical instruments used to observe distant objects in space, including stars.

Step 2:

Attach a spectrograph:

A spectrograph is a device that splits light into its component wavelengths, allowing us to analyze the light emitted by stars. It consists of various optical components and a detector.

Step 3:

Capture starlight:

Point the telescope towards the star of interest and allow the light from the star to enter the telescope.

Step 4:

Direct the light into the spectrograph:

The light from the star is directed into the spectrograph using mirrors or other optical elements. These elements ensure that the light is properly focused and aligned.

Step 5

Disperse the light:

Once the starlight enters the spectrograph, it passes through a dispersing element, such as a prism or a diffraction grating. This dispersing element separates the incoming light into its component wavelengths, similar to how a prism splits white light into a spectrum of colors.

Step 6:

Measure the spectrum:

The dispersed light is then detected by a sensor, such as a charge-coupled device (CCD). The sensor records the intensity of light at different wavelengths, creating a spectrum.

Step 7:

Analyze the spectrum:

By examining the spectrum, astronomers can determine the motion of the star relative to Earth. This is accomplished by looking for shifts in the wavelengths of specific spectral lines, known as Doppler shifts.

Step 8:

Doppler shift analysis:

The Doppler effect causes the wavelengths of light to shift when an object is moving toward or away from an observer. If a star is moving toward us, its spectral lines will be shifted towards the blue end of the spectrum (blue shift). If it is moving away, the lines will be shifted towards the red end (red shift).

Step 9:

Calculate the star's motion:

By measuring the extent of the Doppler shift, astronomers can calculate the speed and direction of the star's motion relative to Earth. This information provides valuable insights into the star's behavior and its place in the universe.

In summary, the device attached to a telescope for measuring the motion of a star toward or away from us is a spectrograph. It analyzes the starlight, disperses it into a spectrum, and allows astronomers to detect the Doppler shifts in the spectral lines, providing information about the star's motion.

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Answer:

Lighting is accompanied with

A. large amount of electric current and high temperature

The objective lens should be 9.0 cm from the specimen in order for the microscope to be in focus.

A microscope is an instrument used to magnify objects that are too small to be seen with the nak ed eye. It consists of a lens system that collects light from the object and produces a magnified image in the eyepiece. A microscope can be used to observe bacteria, cells, and other microscopic organisms, and to analyze materials at the atomic and molecular level. Microscopes have become an essential tool in the fields of biology, medicine, and scientific research. They have also been used to observe and measure the texture, color, and structure of materials in the arts and manufacturing.

This is because the focal length of an objective lens is defined as the distance from the lens to the focal point, which is the point at which light rays coming from a distant object converge to a sharp focus. Therefore, since the focal length of the objective lens is 9.0 mm, the lens should be 9.0 cm from the specimen in order to be in focus.

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To convert 15 gallons of gasoline to chemical energy in joule, multiply the figure above by 15 which is 1,800,000,000 Joules. Answer to b part is 60KWhrs

a.) A gallon of gasoline in most countries contain about 120 millions joule of chemical energy.

To convert 15 gallons of gasoline to chemical energy in joule, multiply the figure above by 15. That is,

Chemical energy = 15 x 120000000 = 1,800,000,000 Joules

b.) Also, the amount of energy cost per gallon of gasoline produced in most countries is equivalent to about 4 kilowatt hours. The capacity that would be equal to the energy in 15 gallons of  gasoline that a battery should have will be

Capacity = 4 x 15 = 60 KWhrs

Therefore, the capacity a battery will have to be equal to the energy in 15 gallons of gasoline will be 60 KWhrs.

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The sonar systems calculate the time each pulse takes to reach the seafloor and return, then translates those times into water depths, allowing us to uncover the bathymetry below us.

Multibeam sonar signals are sent out from the ship. With about 1500 sonar soundings sent out per second, multibeam “paints” the seafloor in a fanlike pattern. This creates a detailed “sound map” that shows ocean depth, bottom type, and topographic features.

Sonar, short for Sound Navigation and Ranging, is helpful for exploring and mapping the ocean because sound waves travel farther in the water than do radar and light waves.

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The matrix is ​​the set of extracellular materials that will form a certain tissue. Through this there will be a physiological integration of the cells.

In the matrix there will be different macromolecules, mainly collagen, enzymes, glycoproteins, among others which will give support to the cells that will be immersed in the matrix. It will also be involved in the process of cell multiplication and cell movement, since it will allow communication between the different cells to coordinate their cell functions.

The extracellular matrix is ​​going to be composed, broadly speaking, of two components: interstitial matrix and the basal membrane. The interstitial matrix is ​​one that will be formed by polysaccharides and fibrous proteins that gives it the characteristic to be able to cushion the compressions to which it may be subjected.

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Answer: v-avg = 0.33 m/s

Explanation:

v = total distance / total time = 200 m / 600 s = 0.33 m/s

d = 200 m

t = 10 min = (10 min)(60 sec/min) = 600 s

It is true that Newton's first law states that an object in motion will stay in motion unless acted upon by external force.

Another name for Newton's first law of motion is the law of inertia. According to this law, unless an external force acts upon an object, it will continue to be at rest or move at a constant speed.

An object's motion will not change unless something outside of the object causes it to change. This law helps us explain why objects tend to keep doing what they are already doing unless something happens to stop them or change their motion.

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The effect after the current is tripled is changing the drift velocity by a factor 3.

We need to know about drift velocity of electrons to solve this problem. The drift velocity can be determined as

v = I / (n . A . q)

where v is drift velocity, I is current, n is atom number density, A is surface area and q is the charge.

From the question above, we know that

I2 = 3 . I1

According to drift velocity formula, the drift velocity is proportional to current

v ~ I

Hence, the ratio of drift velocity and current is

v1 / v2 = I1 / I2

substitute the final current (I2)

v1 / v2 = I1 / (3.I1)

v1 / v2 = 1 / 3

v2 = 3v1

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A rock is thrown into space by an astronaut. The rock will: Keep moving forward indefinitely at its present speed.

Currents are horizontal motions that may flow at speeds up to 4 meters (13 feet) per second and are measured in centimeters per second. A typical surface speed ranges from 2 to 20 inches per second or 5 to 50 cm.

The Lagrangian mean velocity at the present sea surface, which corresponds to an effective mass transport velocity at the surface, is the definition of the ocean total surface current velocity (TSCV). High-frequency (HF) radars, which are only installed in a few coastal places, are currently the only ones capable of successfully measuring the TSCV.

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A massive and fast moving bowling ball must have a large momentum while a light and slow moving tennis ball must have a small momentum. However, a fast tennis ball may have the same momentum as a slow rolling bowling ball due to its high velocity. Given two objects of the same size but of different materials, the heavier (denser) object will fall faster because the drag and buoyancy forces will be the same for both, but the gravitational force will be greater for the heavier object.

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Answer:

:) :) :) :) :) :) :) :) :)

Explanation:

:) :) :) .......

Answer:

c.mass and the amount of matter

An alternative way to explain Hubble's Law without relying on the standard Big Bang idea of a universe with no center and no edge is through the concept of a "tired light" hypothesis.

According to this hypothesis, the redshift observed in distant galaxies is not due to their motion away from us in an expanding universe, but rather the result of photons gradually losing energy as they travel through space.

In the tired light scenario, the wavelength of light is thought to stretch over time due to interactions with matter or other unknown processes. As a result, the light from distant galaxies appears redshifted, mimicking the effect of cosmic expansion. This explanation implies that the universe may have a finite size and a center, challenging the notion of an infinite and uniformly expanding universe.

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Hello!

a = 3 m/s²

Use the equation F = m · a (Newton's Second Law) to solve.

We are given the force and mass, so plug these values into the equation:

60 = 20 · a

60 = 20a

Divide both sides by 20:

60/20 = 20a/20

a = 3 m/s²

Answer:

Explanation:

First job is to convert 72 km/hr to m/s:

\(72\frac{km}{hr}\) × \(\frac{1000m}{1km}\) × \(\frac{1hr}{3600s}\) = 2.0 × 10¹ m/s

Now to find the acceleration which is

\(a=\frac{v_f-v_0}{t}\) and filling in:

\(a=\frac{2.0*10^1-0}{11.5}=1.7\frac{m}{s^2}\) That's part a. Part b want to know how far the car can get in 11.5 seconds (because that's the time it takes for the car to get to 72 km/hr). Since we know that the car can get 2.0 × 10¹ meters in 1 second, that means that in 11.5 seconds, the car can get 11.5(2.0 × 10¹) which is 230 meters.

Answer:

I believe it's B.

Explanation:

The force that a magnet exerts on certain materials, including other magnets, is called magnetic force. The force is exerted over a distance and includes forces of attraction and repulsion. North and south poles of two magnets attract each other, while two north poles or two south poles repel each other.

Answer:x rays are electromagnetic waves.

x rays are transverse waves

x rays travel at the speed of light

Explanation:

Answer:

Gravity.

Explanation:

The force that controls the movement of the planets around the sun, holds together stars grouped in galaxies, and galaxies grouped in clusters is called gravity.

This ultimately implies that, gravity is considered to be a universal force of attraction that acts between all objects that has both mass, energy and occupy space. Therefore, it acts in such a way as to bring objects together.

Additionally, the gravity of earth makes it possible for all physical objects to possess weight.

Weight can be defined as the force acting on a body or an object as a result of gravity.

Mathematically, weight is given by the formula;

\( Weight = mg \)

Where;

m is the mass of an object.

g is acceleration due to gravity.

The car with an initial speed of 66 km/s will come to a complete stop at 22 s

The formula for Uniformly varied rectilinear motion (UVRM) and procedure we will use to solve this exercise is:

t = (vf - vi) /a

Where:

Information about the problem:

Applying the time formula, we have:

t = (vf - vi) /a

t = (0 m/s - 66 km/s) / - 3 km/s2

t = (- 66 km/s) / - 3 km/s2

t =  22 s

It is a physical quantity that indicates the variation of velocity as a function of time, it is expressed in units of distance per time squared e.g.: m/sec2 ; km/h2

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When light strikes a black surface, it is reflected by the surface and

nothing is absorbed    This would be False because black absorbs the light not reflect

Mirrors are used in telescopes because they have the ability to reflect

True? Telescopes designed with mirrors avoid the problems of refracting telescopes. Because the light is reflected from the front surface only, flaws and bubbles within the glass do not affect the path of the light

Transmission in the passing of light through some materials​

False? Some materials allow much of the light that falls on them to be transmitted through the material without being reflected. Materials that allow the transmission of light waves through them are called optically transparent. ... Materials which do not allow the transmission of any light wave frequencies are called opaque.

SW2 (config-if-range)channel-group 1 mode desirable. Ether-channel is made by combining multiple physical links that are seen as one link between two switches.

The possible combination to establish an ether-channel between SW1 and SW2 using LACP or PAgP .Ether-channel is a port link aggregation technology or port channel architecture used primarily on Cisco.

Ether-channel is used for providing fault tolerance and high-speed links between switches, routers and servers. To form an Ether-channel there are 2 protocol and link aggregation control protocol. Also load balances traffic across links in the bundle. Traffic is not necessarily distributed equally among all the links. Ether-channel will double or quadruple your bandwidth.

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