Speed = (distance covered) / (time to cover the distance)
Speed = (525 km) / (1.25 hrs)
Speed = (525/1.25) km/hr
Speed = 420 km/hr
Velocity = speed and the direction from start to finish
Velocity = 420 km/hr North
Velocity of a object is the ratio of distance covered by the object to the time taken by it. The velocity of the airplane is 420 kilometre per hours.
Given information-
The total distance covered by the airplane in north direction is 525 kilometres.
The total time taken by the airplane to cover this distance is 1.25 hours.
What is velocity?Velocity of a object is the ratio of distance covered by the object to the time taken by it.
It can be given as,
[tex]v=\dfrac{x}{t}[/tex]
Here, [tex]x[/tex] is the distance covered by the object and [tex]t[/tex] is time taken by it.
As he total distance covered by the airplane in north direction is 525 kilometres and the total time taken by the airplane to cover this distance is 1.25 hours.
Thus the velocity of the body can be given as,
[tex]v=\dfrac{525}{1.25}\\v=420[/tex]
Hence the velocity of the airplane is 420 kilometre per hours.
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Into how many main groups are fish divided?
a. one
b. two
c. three
d. four
Answer:
Fish are divided into three main groups, which include Cartilaginous fish, Bony fish, and Lobe-finned fish.
A boy pushes a toy car with the force of 50N. The force of friction as the car moves is 5N. What is the net force on the car
Explanation:
The first Newton Law of Motion states that an object at rest or describing a uniform straight line motion (moving at constant velocity), will remain at rest or moving unless a force is applied to it and changes its state of rest or motion.
According to his law, an object in rest can be in equilibrium (net force equals to zero), and a moving object can also be in equilibrium, as long as it keeps a constant velocity.
So, in the case of the toy car the forces acting on it (considering there is equilibrium between the normal force and the weight of the toy) are:
F1=50 N in the direction of the movement of the car
F2=-5 N (in the opposite direction of the movement of the car, that s why it has the negative sign)
Therefore the net force F is:
F=F1+F2=50N - 5 N
F=45N
In the light wave above, the property labeled A determines which characteristic of visible light?
brightness
speed
reflection
color
Explanation:
i think the answer is Reflection
The charge stored in a parallel plate capacitor is proportional to the _____(potential, current) and across _____ (resistance, capacitance) the plates.
Answer:
The charge stored in a parallel plate capacitor is proportional to the potential, and capacitance across the plates.
Explanation:
The capacitance of a parallel plate capacitor is given by:
[tex]C=\frac{Q}{V}[/tex]
where
Q is the charge stored
V is the potential difference across the capacitor
Re-arranging the formula, we get
[tex]Q=CV[/tex]
From this expression, we see that the charge stored (Q) is proportional to both the potential (V) and the capacitance (C).
Answer:
The answers are potental and capacitance
Explanation:
n an adiabatic process, what happens when gases in a system are compressed?
The system absorbs all of the heat.
The system releases all of the heat.
The temperature of the system increases.
The temperature of the system decreases.
Answer:
The temperature of the system increases.
Explanation:
As we know that in adiabatic process the heat transferred to the system must be zero
now by first law of thermodynamics we know that
[tex]Q = \Delta U - W[/tex]
now we know that
Q = 0 (for adiabatic process)
now we have
[tex]\Delta U = W [/tex]
as we know that gas is compressed so the work is done on the gas which shows W is positive
So here change in internal energy must be positive which shows that temperature must be increased
so correct answer will be
The temperature of the system increases.
A worker stands on a support and with the help of a block will lift the load evenly, the weight of which is 480 H (fig. 216). calculate the pressure produced by the support worker, if his weight is 720 N, and the foot area is 320 cm² (Friction and block weight can be neglected.)
Explanation:
Draw free body diagrams for the worker and the load.
The worker has three forces on him: normal force pushing up, weight pulling down, and tension pulling down.
The load has three forces on it: weight pulling down and two tension forces pulling up.
Sum of the forces on the load:
∑F = ma
2T - 480 N = 0
T = 240 N
Sum of the forces on the worker:
∑F = ma
N - 720 N - 240 N = 0
N = 960 N
So the pressure produced by the worker is:
P = F / A
P = 960 N / 320 cm²
P = 3 N/cm²
P = 30,000 Pa
name the device used for measuring mass
Hello There!
A triple beam balance is used to tell how many grams, ounces and pounds an object is.
Collectively living organisms, air, water, and soil constitute the
A. nonpolluted environment.
B. natural environment.
C. population level.
D. stratosphere.
An ecosystem is a combination of living organisms and non-living elements in a given area. The biosphere encompasses all ecosystems on Earth.
An ecosystem consists of all the living things in a particular area together with the abiotic, non-living parts of that environment such as nitrogen in the soil or rainwater. At the highest level of organization, the biosphere is the collection of all ecosystems, representing the zones of life on Earth.
An elevator traveled 15 floors (150 ft) at a speed of 4.5 m/s. What additional information is needed to determine the velocity of the elevator?
Answer:
Velocity is vector quantity.So it needs direction in addition to speed.
Explanation:
The velocity of an object is the rate of change of its position with respect to a frame of reference, and is a function of time. Velocity is equivalent to a specification of its speed and direction of motion.
Answer:
It needs to know the direction that the elevator traveled.
Explanation:
The pH of coffee is _______ times greater than the pH of pure water.
Answer:
zero times greater
Explanation:
Coffee's pH level is 5
Pure water's pH level is 7
Someone places a chocolate bar near a working radar set that is used to locate ships and airplanes. Which best describes what is likely to happen to the chocolate bar?
A.It changes color as it absorbs visible light from the radar set.
B.It softens and melts as it absorbs microwaves from the radar set.
C.It becomes radioactive after it absorbs gamma rays from the radar set.
D.It begins to fluoresce after it absorbs ultraviolet light from the radar set.
Answer:
B. it softens and melts as it absorbs microwaves from the radar set.
Explanation:
Answer:
The Answer is defiantly B
Explanation:
I just know it is
. A helicopter is 8.50 m above the ground and climbing at 2.5 m/s. It drops a package from rest (relative to the helicopter). At the moment that the package is released, what is its velocity relative to the ground?
Answer:
2.5 m/s
Explanation:
The velocity of the package relative to the ground = the velocity of the package relative to the helicopter + the velocity of the helicopter relative to the ground
v = 0 m/s + 2.5 m/s
v = 2.5 m/s
At the moment it is released, the package is rising at 2.5 m/s.
Final answer:
At the moment of release, the package dropped from the helicopter has an upward initial velocity relative to the ground of 2.5 m/s, equal to the helicopter's climbing velocity.
Explanation:
When a package is dropped from a helicopter that is climbing, the initial velocity of the package relative to the ground is the same as the velocity of the helicopter at that moment. Since the helicopter is climbing at a velocity of 2.5 m/s, the package will also have an initial velocity of 2.5 m/s upward relative to the ground. It is important to note that this is the initial velocity at the moment of release; the package will then be subject to gravitational acceleration which will affect its velocity as it falls.
Describe, in as much detail as you can, the life history of a star like our Sun.
Life Cycle of a Star. Stars are formed in clouds of gas and dust, known as nebulae. ... Small stars, like the Sun, will undergo a relatively peaceful and beautiful death that sees them pass through a planetary nebula phase to become a white dwarf, this eventually cools down over time leaving a brown dwarf.
which of these human variations is dependent on a group of genes
a. skin color
b. cleft chin
c. eye shape
d. attached earlobes
Among the options listed, skin color and eye shape are known to be dependent on a group of genes, making them polygenic traits. The others are believed to be influenced mainly by single genes, although this view is evolving.
Explanation:The human variations that are dependent on a group of genes, also known as polygenic traits, include skin color, eye shape, and potentially, other physical attributes. This means that these traits are not determined by a single gene but by the interactions of multiple genes.
Skin color, eye shape are complex traits that are determined by the interaction of several genes. For instance, in the case of skin color, about 20 genes have been associated with variations in skin color.
The other two variations, cleft chin and attached earlobes, are traditionally thought of as being controlled by a single gene each, although recent research suggests a more complex genetic basis as well.
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The dispatcher of courier service receives a message from truck A that reports a position of +5 after a displacement of +2. What was the initial position of Truck A? First solve the problem using a number line and then solve the problem using an equation.
The formula we need to use is displacement.
[tex]d=\Delta{x}=x_f-x_i[/tex], where xf is final position and xi is initial position.
We report the final position of 5 and the displacement of 2 so the formula is now:
[tex]2=5-x_i\Longrightarrow x_i=3[/tex].
So the initial position of truck A is 3.
Hope this helps.
r3t40
depending on their area of origin, whales can communicate in various (blank)
Answer: The correct answer (for Plato) would be ‘dialects’.
Explanation: Dialects are variations of a language that belong to a specific region, area, or group. E.g. Tagalog and Cebuano are both dialects of Filipino, or the southern American dialect and African American vernacular English (AAVE) are both dialects of English.
A train travels 53 kilometers in 2 hours, and then 54 kilometers in 4 hours. What is
its average speed?
Your Answer:
Answer
units
Average speed = (total distance) / (time to cover the distance)
total distance = (53 km + 54 km) = 107 km
time = (2 hr + 4 hr) = 6 hours
Average speed = (107 km) / (6 hrs)
Average speed = (107/6) (km/hrs)
Average speed = 17.833... km/hr
what phase of the moon is shown in the photo above.
a) waning crescent
b) waxing gibbous
c) third quarter
d) waning gibbous
The Moon phase described is the waxing gibbous phase, which occurs after the first quarter phase and before a full moon, with the majority of the illuminated side becoming increasingly visible.
The phase of the Moon depicted in the description corresponds to the waxing gibbous phase.
This phase occurs during the week after the first quarter phase, where more of the Moon's illuminated half becomes visible from Earth, leading up to a full moon.
At the waxing gibbous phase, the Moon has not yet reached the full moon stage where it is opposite the Sun and its entire illuminated side is visible from Earth.
The waxing gibbous Moon rises in the afternoon and is visible for most of the night, setting in the early morning hours.
Its visibility throughout the night can be particularly helpful for activities like taking a romantic stroll or returning from a late-night study session.
the change in velocity that occurs at a specific moment in time known as
The change in velocity at a specific moment is called Instantaneous acceleration. It is the acceleration at an exact instant as opposed to an average over a time period.
Explanation:The change in velocity that occurs at a specific moment in time is known as Instantaneous acceleration. Acceleration is the rate at which velocity changes with time. In general, it is calculated as the change in velocity divided by the time over which the change occurred. In physics, when we say 'at a specific moment in time', we refer to an infinitesimally small interval of time. In this case, we are referring to the concept of instantaneous acceleration. It's the acceleration at a particular instant in time as opposed to an average over a time interval.
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The change in velocity at a specific moment in time is known as instantaneous acceleration.
Explanation:The change in velocity that occurs at a specific moment in time is known as the instantaneous acceleration.
Instantaneous acceleration is the rate of change of velocity at a specific instant in time.
It is found by taking the derivative of the velocity function with respect to time.
For example, if a car is accelerating from rest to a speed of 60 mph in 10 seconds, the instantaneous acceleration at the moment when the car reaches a speed of 30 mph would be different from the instantaneous acceleration at the moment when the car reaches a speed of 60 mph.
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Select the correct answer. Which type of committees handle recurring tasks in an organization? A. task force B. standing C. ad hoc D. generic
Answer:
Standing :)
Explanation:
how do you change the strength of a electromagnet
Answer:
The strength of an electromagnet can be increased by increasing the number of loops of wire around the iron core and by increasing the current or voltage. You can make a temporary magnet by stroking a piece of iron or steel (such as a needle) along a permanent magnet.
There are three things that dictate how strong this field is:
1.How much kinetic energy you provide the wire
Answer is changed by pushing more current through the wire.
2. How permeable our magnetic rod is
Answer is changed by picking a more magnetic media
3.How many little magnetic fields you generate to make the net, large magnetic field
Answer is changed by increasing the amount of turns of the wire. More turns, more little fields, strong big field
The strength of an electromagnet can be altered by increasing the electric current, adding more coils or windings to the solenoid, and incorporating a ferromagnetic core.
To change the strength of an electromagnet, there are several factors you can modify:
Increase the electric current flowing through the coil.Add more coils or windings to the solenoid.Use a ferromagnetic core such as iron to enhance the magnetic field.It's worth noting that using more windings increases the winding density, and this, along with a higher current, will increase the magnetic field strength.
Also, keep in mind that the limits to how strong you can make your magnet are the coil resistance and any material-related constraints, like the potential destruction of superconducting properties if the magnetic field is too strong.
The branch of science concerning heat flow and energy conversions is called
Hello there! the answer is thermodynamics.
Someone in the thermodynamics field often studies how heat works and interacts with different types of energy, making this the best answer choice.
I hope this helps and have a great rest of your day!
Answer:
Thermodynamics
Explanation:
A light bulb with resistance of 22 ohms is connected to a 110 V battery. What is the current
flowing through the circuit?
5A. The current that flowing through the circuit with a lightbulb of 22Ω connected to a voltage source of 110V is 5A.
The key to solve this problem is using Ohm's Law equations V = I*R, where V is the voltage drop, I is the current that flow through the element and R its resistance.
Clear I from the equation above:
I = V/R
With V = 110V, and R(lightbulb) = 22Ω
I = 110V/22Ω = 5A
What is a variable?
O
A. A summary of another scientist's work
O
B. An educated guess about the outcome of an experiment
O
C. Something that can change during an experiment
O
D. The analysis of the results of an experiment
C. something that can change during an experiment
It's C: Something that can change in an experiment.
ITS TIMED HURRY PLEASE The voltage across the primary winding is 350,000 V, and the voltage across the secondary winding is 17,500 V. If the secondary winding has 600 coils, how many coils are in the primary winding?
A. 30 coils
B. 583 coils
C. 12,000 coils
D. 332,500 coils
12,000 coils. The primary winding has 12,000 coils.
In order to solve this problem we have to use the relation for a transformer Vp/Vs = Np/Ns, where Vp is the voltage across the primary winding, Vs in the voltage across the secondary winding, Np is the numbers of coils in the primary winding, and Ns is the number of coils en the secondary winding.
With Vp = 350,000 V, Vs = 17,500 V, and Ns = 600 coils:
350,000 V/17,500 = Np / 600 coils
Np = (600 coils x 350,000 V) / 17,500 V
Np = 210,000,000/ 17,500 coils
Np = 12,000 coils
Answer:
ITS C
Explanation:
Which of the following would 15 centimeters be equal to
Answer:
150 millimeters
Explanation:
According to linear conversion of units;
1 cm is equivalent to 10 mm
Therefore, 15 cm will be equivalent to 150 mm
On the other hand;
1 Meter is equivalent 100 cm
Therefore; 15 cm will also be equivalent to 0.15 M
Hence;
15 cm = 150 mm = 0.15 m, and so forth
The process by which a substance changes from a gas tank state to the liquid state is
Answer:
Condensation
Explanation:
Condensation is the process in which a gas turns into a liquid, by releasing heat. In such a process, heat is released from the gas to the environment, and the molecules of the gas become closer to each other, and they feel more the intermolecular forces between each other.
The processes that describe the different changes of phase of matter are:
- Melting: when a solid turns into a liquid, absorbing energy
- Evaporation: when a liquid turns into a gas, absorbing energy
- Condensation: when a gas turns into a liquid, releasing energy
- Freezing: when a liquid turns into a solid, releasing energy
- Sublimation: when a solid turns into a gas, absorbing energy
- Deposition: when a gas turns into a solid, releasing energy
to keep food warm or cool coolers are made out of materials that are
Answer: insulartors..
What must you know to solve Kepler's third law, the law of periods?
A. Period of the minor axis
B. Period of the orbit
C. Period of the revolution around the sun
D. Period of the major axis
Explanation:
According to the Third Kepler’s Law of Planetary motion “The square of the orbital period of a planet is proportional to the cube of the semi-major axis (size) of its orbit”.
Talking in general, this law states a relation between the orbital period [tex]T[/tex] of a body (moon, planet, satellite) orbiting a greater body in space with the size [tex]a[/tex] of its orbit.
This Law is originally expressed as follows:
[tex]T^{2}=\frac{4\pi^{2}}{GM}a^{3}[/tex]
Where;
[tex]G[/tex] is the Gravitational Constant
[tex]M=1.9(10)^{27}kg[/tex] is the mass of the massive (greater) body
[tex]a[/tex] is the semimajor axis of the orbit of the smaller body
Answer:
D. period of the orbit
sound of thunder is heard 5s after the flash of lighting is seen. calculate the distance of nearest point of lighting if the speed of sound in air is 346 ms-1
Answer:
formula
speed = distance / time
distance = speed x time
distance = 346 x 5
distance = 1730 m
The distance of the lightening strike would be 1730 m or 1.7 km
Explanation:
Answer:
1730m
Explanation: