(a) [tex]-1.46\cdot 10^{-4} m/s^2[/tex]
The average acceleration of the ship is given by
[tex]a=\frac{v-u}{t}[/tex]
where
v is the final velocity
u is the initial velocity
t is the time elapsed
Here we have:
[tex]u=34 km/h =9.44 m/s[/tex] is the initial velocity
v = 0 is the final velocity
[tex]t=18 min =64800 s[/tex] is the time elapsed
Substituting, we find
[tex]a=\frac{0-9.44 m/s}{64800 s}=-1.46\cdot 10^{-4} m/s^2[/tex]
(b) 4.72 m/s
Assuming the acceleration is uniform, the average velocity of the ship is given by:
[tex]v_{avg} = \frac{v+u}{2}[/tex]
where
v is the final velocity
u is the initial velocity
Here we have:
v = 0
u = 9.44 m/s
So the average velocity of the ship is
[tex]v_{avg} = \frac{0+9.44 m/s}{2}=4.72 m/s[/tex]
Which of the following groups of atoms are most likely to have similar properties?
nickel (28), calcium (20), bromine (35)
aluminum (13), germanium (32), antimony (51)
oxygen (8), selenium (34), tellurium (52)
Answer:
Oxygen, Selenium, Tellurium
Explanation:
Elements in the periodic table are arranged into rows and columns. Rows are called periods and columns are called groups. Elements that fall under the same group have common chemical properties.
Oxygen, selenium and tellurium all fall under the same group, which is Group VI A, or Group 16. This group is called the Oxygen group or Chalcogen Group.
Answer:
c
Explanation:
what is the acceleration of an arrow that has a mass of 0.1 kg and a force of 9 N?
please include how to solve it >
Force = Mass x Acceleration
9N = 0.1kg x Acceleration
Acceleration = 9N / 0.1kg
Acceleration = 90 m/s^2
Answer:
Hope it can help you and mark me as a brainlist...
What is the mass of a neutron?
1/2,000 amu
1 amu
2,000 amu
1/200 amu
The proton and the neutron both have 1 AMU of mass.
Answer:
B.
Explanation:
Earth's gravity attempts to change the velocity of all objects on Earth's surface toward _____ at a rate of 9.8 meters per seconds squared.
Answer:
Earth's gravity attempts to change the velocity of all objects on Earth's surface toward the center of the Earth at a rate of 9.8 meters per seconds squared.
Explanation:
Answer:
Earth's gravity attempts to change the velocity of all objects on Earth's surface toward CENTER OF EARTH at a rate of 9.8 meters per seconds squared.
Explanation:
As we know that the gravitational force of Earth is towards the center and it is given by the formula
[tex]F = \frac{GMm}{R^2}[/tex]
this is the force experienced by all the objects near the surface of Earth and this force is towards the center of the Earth
So this is also know as gravity of Earth
Now we know that the acceleration of objects near the surface of Earth is given by the equation
[tex]a = \frac{F}{m}[/tex]
[tex]a = \frac{GM}{R^2}[/tex]
this is also known as acceleration due to gravity and this is of magnitude g = 9.8 m/s/s
so all objects will move towards the center of earth with rate of change in velocity of 9.8 m/s/s
17. A simple machine made up of a slanted surface such as a ramp or stairs is called
A wheel & axle
B wedge
C pulley
inclined plane
Answer: Inclined Plane.
Explanation:
Inclined plane is a ramp or stairs.
Which region of the ear gathers information and funnels sound
The outer ear
The inner ear
The middle ear
The cochlea
The outer ear is the part of the ear that takes up the sound waves and funnels them into the canal.
Answer: Option A
Explanation:
The outer ear is a region of the ear that gathers the information and then funnels the sound into the middle ear. The phrase “funnels the sound” means that the waves of sound are converted into vibration.
These vibrations are then changed as the nerve signals by cochlea present in the inner ear. These nerve signals are read by the brain and the information is received.
which statement about magnetic force is false ? a. it is expected over a distance. b. it affects only certain types of matter c. it includes forces of attraction and repulsion d. it act only on materials that are touching a magnet.
d, its act only ob material that are touching a magnet
The false statement about magnetic force is: it act only on materials that are touching a magnet. Hence, option (d) is correct.
What is magnetic force?Electromagnetic force is a result of charge motion, which also produces magnetic force. We know that a moving charge creates a magnetic field around itself. In this situation, the magnetic force can be thought of as a force that results from magnetic fields interacting.
As magnetic force is a field force, it is expected over a distance. In every atoms, electron revolves around nucleus but a certain type of material has non-zero net magnetic momentum. Magnetic field affects only the material with non-zero net magnetic momentum. Same poles of magnets repulse whereas opposite poles of magnets attract. But due to being a field force, it does not act only on materials that are touching a magnet - it acts all material in its surroundings .Hence, option (d) is correct.
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immature forms of many animals, like Guinea worms, before they morph into adults
Answer:
True
Explanation: If this is a true or false question it is *T*
The immature forms of animals which they are before metamorphosis are the larva.
Explanation:
The larva in plural form is known as the larvae. The eggs are hatch into the form of larva. These larvae grow in different stages which are marked according to the stages as I or II and so on.
After the larval development, when they are ready to be converted into adults, metamorphosis occurs. This process changes the larva into adults. Here the immature form gets converted into mature adult form.
People in finance work mostly with:
Insurance
Products
Information
Money
The answer is money. Hope this helps.
Answer:
D: money
Explanation:
Defined the term electromagnetic induction and explain how a generator uses electromagnetic induction
Is the production of electricity by magnetic field.
There are two types of generator which is D.C generator . And A.C generator
A.C gen consist of rectangular coil,brushes and permanent magnet
According to the external force mechanical energy used to rotate coil, due to magnetic flux produced by permanent magnet create induced current, this is to according to flemmings right hand rule of electromagnetic induction the rotating coil will produce current
I hope that will help.
Electromagnetic induction is the creation of a voltage by changing the magnetic field in a conductor. Generators use this principle by rotating a coil in a magnetic field to produce electrical energy efficiently.
Electromagnetic induction is the process of creating a voltage in a conductor by changing the magnetic field around it. Generators utilize electromagnetic induction by rotating a coil in a magnetic field, which generates an alternating current emf. This principle is the foundation for various energy generation devices like coal- and steam-fired generators, hydroelectric generators, and wind turbines.
A devout halloweener not only dressed as an astronaut, but travelled to the moon for the full experience. The astronaut jumps on the moon with an initial upward velocity of 2.98m/s. If the acceleration of gravity on the moon is -1.62m/s2, what is the highest the astronaut jumps?
Answer:
2.78 m
Explanation:
At the peak, the velocity is 0.
Given:
a = -1.6 m/s²
v₀ = 2.98 m/s
v = 0 m/s
x₀ = 0 m
Find:
x
v² = v₀² + 2a(x - x₀)
(0 m/s)² = (2.98 m/s)² + 2(-1.6 m/s²) (x - 0 m)
x = 2.775 m
Rounded to 3 sig-figs, the astronaut halloweener reaches a maximum height of 2.78 meters.
Which describe the image formed by a plane mirror? Check all that apply. virtual real upside down right-side up larger than the object smaller than the object same size as the object
Final answer:
The image formed by a plane mirror is virtual, upright, and of the same size as the object.
Explanation:
The image formed by a plane mirror exhibits specific characteristics. First and foremost, the image is virtual, meaning it cannot be projected onto a screen because it appears to be behind the mirror. The image is also upright, which means it has the same orientation as the actual object (it is not inverted). Moreover, the image is of the same size as the object, which differentiates it from images formed by curved mirrors that can be either magnified or diminished.
Pls hurry I’m timed Which describes the formation of horizon B?
•Froms at the surface
•features parent material
•undergoes the most change
•forms due to decomposed material
The first one. Hope this helped
Which weather events can cause damage during a thunderstorm? Check all that apply.
Answer:Heavy rain,Strong winds,Severe lightening
Heavy rain, strong winds and severe lightning are the events which can cause damage during thunderstorm.
Answer: Option A, D and E
Explanation:
Thunderstorm is term given to occurrence of heavy rains accompanied by high sounds and lightening. As the sound is produced due to lightening, that sound is termed as thunder and the presence of heavy rain is termed as storm.
So both together is termed as thunderstorm. Thunderstorm usually occurs due to increase in moisture, temperature and when the heated air molecules are raised upward. During these thunderstorms, the occurrence of heavy rains, flow of strong winds and severe lightening are well known.
So heavy rains can lead to flash flooding and destruction of homes, strong winds will also lead to damage of objects and lightening may cause forest fire. Thus these three events during thunderstorm causes damage.
What is the velocity of an object that has a momentum of 4,000 kg-m/s and a mass of 115 kg? Round to the nearest hundredth.
A. 35.67 m/s
B. 34.78 m/s
C. 37.43 m/s
D. 36.5 m/s
Answer:
B. 34.78 m/s
Explanation:
The momentum of an object is given by:
[tex]p=mv[/tex]
where
p is the momentum
m is the mass of the object
v is its velocity
For the object in this problem, we have
p = 4000 kg m/s
m = 115 kg
So, we can solve the equation to find v, the velocity:
[tex]v=\frac{p}{m}=\frac{4000 kg m/s}{115 kg}=34.78 m/s[/tex]
Satellite communication is only possible using
A) analog transmission.
B) digital transmission.
C) sound waves to transmit signal.
D) cellular devices such as phones.
Answer:
its b
Explanation:
Answer:
B) digital transmition
Explanation:
using radio waves to transmit the information.
what Mathematical formula is used to calculate force?
Answer:
F = m × a
Explanation:
M= Mass
A= Acceleration
F= Force
Final answer:
The main formula for calculating force is F = ma, according to Newton's Second Law of Motion. For forces like gravity and tension, specific adaptations of this principle are applied. Other situations may use formulas derived from the basic principles, depending on the context, such as impulse or material properties.
Explanation:
The mathematical formula most commonly used to calculate force is derived from Newton's Second Law of Motion, which states that force is equal to mass times acceleration (F = ma). When calculating the force of gravity on a mass, the formula F = mg can be used, where 'g' represents the acceleration due to gravity. Additionally, when dealing with the force of tension, it must equal the force of gravity plus any force necessary to accelerate the mass. Note that for the calculation of normal force and tension force, if it is not given, Newton's 2nd Law should be applied.
Relativistic force considers force as the time derivative of momentum. The average force can also be computed using the concept of impulse, where average force equals the force time curve area divided by the time interval. Furthermore, when dealing with specific situations like the force on a cable, the force can be found using the formula F = (Y * A * ΔL) / L, where 'Y' is the Young's modulus of the material, 'A' is the cross-sectional area, 'ΔL' is the change in length, and 'L' is the original length.
10)
Current flowing in a circuit depends on two variables. Identify these variables and their relationship to current.
A) Current is proportionate to the conductance of the circuit and precisely proportional to the voltage applied across the circuit.
B) Current is conversely proportional to the electrical tension of the circuit and corresponds to the resistance across the circuit.
C) Current is inversely proportional to the resistance of the circuit and directly proportional to the voltage applied across the circuit.
D) Current is commensurate to the resistance of the circuit and directly proportional to the electric pressure applied across the circuit.
The current is “inversely proportional to resistance of circuit” and “directly proportional to voltage across the circuit”.
Answer: Option C
Explanation:
The amount of current flowing through the circuit depends upon the resistance and voltage.
Current depends on resistance of the circuit. If there is high potential difference, the current in circuit will be high. The high resistance leads to less current.
Mathematically the relationship between voltage, current, and resistance is given as [tex]V=I \times R[/tex]. This is also stated as Ohms law.
Which organ is being described in this statement?
If this organ malfunctions, all other body systems will be starved of oxygen.
A.
kidneys
B.
skin
C.
heart
D.
small intestine
Answer:
it is C heart
If the heart malfunctions, all other body systems will be starved of oxygen.
The cardiovascular system provides the body with vital nutrients and oxygen through a complex network, whereby all organs, body systems, and body tissues receive oxygen-rich blood.
Heart is a muscular-type organ that animals and humans possess, which performs the function of pumping blood to the rest of the body.Oxygenated blood flows from the heart through the arteries, which branch into the smaller arterioles until finally dividing into the capillaries.The capillaries pass into the venules, which open into the veins, which become larger in cross section until the blood finally flows back to the heart.In the capillary area, the transfer of oxygen and nutrients from the blood to the tissues can take place and also allows waste products to pass from the tissues into the blood.Therefore, we can conclude that if the heart malfunctions, all other body systems will be starved of oxygen.
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how high up is a 3kg object that has 300 joules of energy
Answer: 10m (assuming gravity is 10m/s^2)
Explanation:
Energy (gravitational potential) = mass x acceleration due to gravity x change in height
E = mg∆h
300 = 3 x 10 x ∆h
∆h = 10m
Need help with getting the answer!
Answer:
D. Salt Weathering
Explanation:
Salt weathering is defined as a geomorphic process resulting in the physical disintegration of rocks or stones and in the fretting of their surfaces. Often you tend to find the best examples of salt weathering in dessert areas and coastal areas. You can find three distinct types of weathering which are biological weathering, physical weathering, and chemical weathering.
Tina and her puppy are tugging on a rope each pulling on opposite ends when is tina doing work ? When is Tina doing work ?
Explanation : Tina is doing work all of the time because whiles she’s pulling and allowing the rope to be pulled her body using muscles to keep herself upright and a firm grip on the rope.
Answer:
whenever she pulls the puppy toward her
Explanation:
What is the correct path of sperm cells through the male reproductive system?
Epididymis, seminiferous tubules, urethra, vas deferens
Seminiferous tubules, epididymis, vas deferens, urethra
Urethra, seminiferous tubules, epididymis, vas deferens
Seminiferous tubules, vas deferens, epididymis, urethra
The correct path of sperm cells through the male reproductive system is seminiferous tubules, epididymis, vas deferens, and then the urethra.
Explanation:The correct path of sperm cells through the male reproductive system is from the seminiferous tubules, where they are formed, to the epididymis, where they mature and are stored. From there, during ejaculation, the sperm move through the vas deferens, which is part of the spermatic cord, towards the ejaculatory duct. Finally, the sperm cells travel through the urethra and are expelled from the body. Thus, the complete path is: Seminiferous tubules, Epididymis, Vas deferens, Urethra.
Which object is in static equilibrium
Answer:
The body is said to be in static equilibrium if the net force acting on a body at rest is zero.As the net force is zero,the body will not undergo motion.
Explanation:
The neutron is located in the what part of the atom?
Answer:
The neutron can be found in the nucleus of the atom with the proton.
Answer:
The neutron is located in the nucleus of an atom
Explanation:
Atom contain proton , neutron and electron. The electron is found in the outer part of an atom. The electron revolves around the atom. It determines how atom of elements are bonded.
The neutron and proton determines the mass of an atom. The proton number plus the neutron number determines the mass number of an element. The proton and neutron are located in the nucleus of an atom. The proton is usually positively charged while the neutron is neutral.
The neutron is located in the nucleus of an atom and it is neutral. The picture below demonstrates the location of neutron in an atom
Atoms from which two elements would form ionic bonds?
Ionic bonds are formed between atoms of metals and nonmetals, resulting in the transfer of electrons from the metal to the nonmetal, creating a stable crystalline compound with zero net charge.
Explanation:Atoms from metals and nonmetals would form ionic bonds. Ionic bonds are electrostatic attractions between positively charged ions, or cations, and negatively charged ions, or anions. These attractions lead to the formation of a crystalline lattice in which the compound has a zero net charge. For example, sodium (Na), a metal, will donate its valence electron to chlorine (Cl), a nonmetal, leading to the formation of Na+ and Cl- ions. These ions will then attract each other, forming NaCl, also known as table salt, which exhibits a stable crystalline structure.
Another example is the formation of magnesium oxide (MgO) when magnesium (Mg), a metal with two valence electrons, reacts with oxygen (O2), a nonmetal with six valence electrons. Magnesium will lose two electrons to become Mg2+, while oxygen will gain those electrons to become O2-. The resulting compound is an arrangement of oppositely charged ions held together by the force of their attraction, resulting in MgO's stable ionic crystalline structure.
15 POINTS! explain how the information from stimuli can become a memory or result in a behavior
Answer:
Memories occur when specific groups of neurons are reactivated. In the brain, any stimulus results in a particular pattern of neuronal activity—certain neurons become active in more or less a particular sequence.
Explanation:
Hope this helps
Integration of stimuli and comparison with memories and previous stimuli leads to specific responses. Behaviors can be instinctual or learned, depending on the influence of the environment.
Explanation:Integration. Stimuli that are received by sensory structures are communicated to the nervous system where that information is processed. This is called integration. Stimuli are compared with, or integrated with, other stimuli, memories of previous stimuli, or the state of a person at a particular time. This leads to the specific response that will be generated. For example, when seeing a baseball pitched to a batter, the trajectory of the ball and its speed will be considered before the batter decides to swing.
Behaviors can result from this integration of stimuli. They can be instinctual or learned. Instinctual behaviors are not influenced by the environment and include mating systems and methods of communication. On the other hand, learned behaviors are influenced by the environment and include imprinting, habituation, conditioning, and cognitive learning.
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Kepler's laws follow which law discovered by Sir Isaac Newton?
A. Universal Laws of Attraction
B. Universal Gravitational Law
C. Universal Law of Force
D. Universal Law of Friction
B. Universal Gravitational Law
Answer:
B. Universal Gravitational Law
Explanation:
As we know that Kepler gives three laws regarding the planetary motion of all planets around the sun
All his laws are derived from the basic Theory of law of attraction by gravitation.
Universal law of attraction given by Sir Issac Newton says that if two masses are placed at some distance from each other then the net force between two masses is given as
[tex]F = \frac{Gm_1 m_2}{r^2}[/tex]
here we know that
[tex]m_1, m_2[/tex] = masses of two objects
[tex]r [/tex] = distance between two objects
which type of tool was modified to view outer space
Answer:
telescope
Explanation:
Answer:
Astronomical telescope
Explanation:
A telescope is a device used to observe object that are at distant places. It is comprised of lens or mirrors (convex or concave). Light is allowed to pass through it , producing a reflected or a refracted image. The magnification of an image is directly proportional to the len's or mirror's size. A bigger lens produces a magnified and clear image as it allows more amount of light to enter the lens, whereas a smaller lens will produce a smaller image due to its smaller amount of incident light.
Thus, an astronomical telescope is a tool extensively used to view the outer space.
Can you complete and EXPLAIN please?????:(
Answer:
Explanation:
Well you have the voltages right, and that is no trivial matter. Each one of the resistors in a parallel circuit sees the same input voltages (in this case 6).
Now I think it would be a good idea to fill in the the resistance column.
R1 = 3 ohms
R2 = 6 ohms
R3 = 2 ohms
The total resistance can be calculated in two ways. I'll get around to doing both of them but I'll do the conventional way first. One hint: the total resistance must be smaller than the smallest resistor. Read that sentence over a couple of times. What it means is that it must be less than 2 ohms in a parallel circuit.
1/r1 + 1/r2 + 1/r3 = 1/rt
1/3 + 1/6 + 1/2 = 1/rt
Change all the denominators to 6ths.
2/6 + 1/6 + 3/6 = 1/rt
(2 + 1 + 3)/6 = 6/6 = 1
rt = 1
====================
So the current I is V/R
V = 6
R = 1
Current = V/R = 6/1 = 6 amps.
====================
The current in each resistor is
I1 = V / R1
I1 = 6/3 = 2 amps
I2 = V/R2
I2 = 6/6 = 1 amp
I3 = 6/2 = 3 amps
The total is I1 + I2 + I3 = 2 + 1 + 3 = 6 amps.
======================
Remember I said there was 2 ways of figuring out the total resistance. I did one of them about. Here's the other.
R = V / It
R = 6 / 6
R = 1 ohm just what you got before.
====================
Power
P = V * I
P1 = 6 * 2 = 12 watts
P2 = 6*1 = 6 watts
P3 = 6*3 = 18 watts
Pt = 36 watts.
Pt can be done by using the voltage * the total current
Pt = 6 volts * 6 amps = 36 watts, just what you would expect.