The specific heat capacity of aluminium block is 9130 per kg per °C and its
temperature is increased by 10 °C. 4565 J of energy is transferred. Calculate the
mass of the aluminium block.
Answer:
Q
Explanation: you don't need to convert °°C to K Temperature difference is the same on both scales
A box weighing 30 N is pushed a distance of 5 meters. How much work was done?
Why are metals so ductile?
A) The atoms form regular crystal arrangements, allowing them
to pack closely together.
B) The atoms form long chains that are very difficult to break.
C) The atoms can slide past each other while still remaining
attracted to each other electrically.
D) The atoms share electrons in a way that allows them to move
easily from one atom to another.
Answer:
i think .A
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How do waves interact with our senses?
Answer:
well sound waves interact with our ears and light interacts with our vision
Explanation:
Answer:
Hearing employs air or water waves, whereas sight uses the electromagnetic spectrum. The electrical and chemical neural impulses are sent through the human auditory nerve to the brain once the mechanical energy of the sound waveform is converted into neurological stimulation.
Which property of matter describes a continued existing state of rest or uniform motion in a straight line?(1 point)
friction
friction
gravity
gravity
inertia
inertia
uniformity
uniformity
Answer:
inertia
Explanation:
law of inertia describe it
It is the inertia of the body which describes the existing state of rest or uniform motion in a straight line.
What is inertia?The inertia of the body is defined as If the body is at rest then it will be at the same state until an external force is not applied to it.
Similarly, If the body is in motion then it will remain in motion until and unless an external effort is not applied to stop it.
For example, if the football is placed at the rest on the ground it will never move from the same position until an external force is not applied.
Similarly, if the car is moving at a certain speed then it will only stop if the brakes are applied and if there is not any friction it will never stop.
Thus the inertia of the body describes the existing state of rest or uniform motion in a straight line.
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How can you edit the light wave to increase the photosynthesis in the plant?
A) decrease the amplitude of the wavelength to increase the intensity
B) change the wavelength to the size of a bridge
C) increase the amplitude of the wavelength to increase the intensity
Answer: C) Increase the amplitude of the wavelenghth to increase the intensity.
Explanation:
1. You serve a volleyball with a mass of 2.1 kg. The ball leaves your hand with a speed of 30 m/s. The ball has __________________ energy. Calculate it.
What is the coolest thing one earth to you?!
Answer:
[tex] \huge \mathtt \gray{answer}[/tex]
The HNSspace travelconcordeiPhoneastronautsJames bondHope its help
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Which would result in an increase in the attractive force between two magnets?
A. The north poles of two magnets move closer together.
B. The south poles of two magnets move away from one another.
C. The north pole of one magnet moves closer to the south pole of another
magnet.
D. The north pole of one magnet moves away from the south pole of another
magnet.
When you remove a battery and attach the terminals of the ohmmeter to the ends of the circuit, what is the resistance?
Answer: It is the act of measuring internal resistance.
Explanation:
It should be understood that when that action is exhibited, it is towards of measuring the internal resistance.
And it should be noted that, no matter how much or little load we attach to the battery, the voltage at the source's terminals will always stay the same.
Suppose we pass light through two narrow slits. What would we see on a distant screen after passing the light through both slits?.
If we pass light through two narrow slits. then a double-slit interference pattern will form.
What is a Double-slit interference pattern?When light is passed through two narrow slits, an interference pattern will be formed on a distant screen. This is known as the double-slit interference pattern.
The interference pattern is formed because the light passing through each slit interferes with the light passing through the other slit. The light waves can either reinforce or cancel each other out, depending on the phase relationship between them.
On the screen, there will be alternating bright and dark fringes, with the brightest fringes corresponding to constructive interference, where the waves are in phase, and the darkest fringes corresponding to destructive interference, where the waves are out of phase.
The pattern will have a series of bright bands, called interference maxima, where the bright fringes occur, separated by dark bands, called interference minima, where the dark fringes occur. The position of the maxima and minima will depend on the wavelength of the light, the distance between the slits, and the distance between the slits and the screen.
This interference pattern is a classic example of the wave nature of light, and it played an important role in the development of quantum mechanics.
Hence, when we pass the light through two narrow slits a double-split interference is formed.
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Most nuclei contain a small dense region known as the.
Answer:
NUCLEOLUSMost nuclei contain a small, dense region known as the nucleolusWhen an electron enters a region of uniform magnetic field (B=0.19T), with its
velocity (V=5.5X10^6m/s) perpendicular to the field, it experiences a magnetic
force which acts as centripetal force to cause circular motion of the particle. find
the radius of the track?
The radius of the track in the circular motion is 0.164 mm.
Magnetic force of the of chargeThe magnetic force of the charge is calculated as follows;
F = qvB
Centripetal force of the chargeThe centripetal force experienced by the charge is calculated as follows;
[tex]F = \frac{mv^2}{r}[/tex]
The magnetic force is equal to the centripetal force[tex]qvB = \frac{mv^2}{r} \\\\qB = \frac{mv}{r} \\\\r = \frac{mv}{qB} \\\\[/tex]
The radius of the trackThe radius of the track is calculated as follows;
[tex]r = \frac{9.1 \times 10^{-31} \times 5.5 \times 10^6}{1.6 \times 10^{-19} \times 0.19} \\\\r = 1.64 \times 10^{-4} \ m\\\\r = 0.164 \times 10^{-3} \ m\\\\r = 0.164 \ mm[/tex]
Thus, the radius of the track in the circular motion is 0.164 mm.
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The image seen in a plane mirror is located __________.
at the same distance behind the mirror
When two objects are in direct physical contact, heat is always conducted from the ________ object to the _______ object.
Answer:
1st blank: warmer 2nd blank: cooler
Explanation:
Heat energy always flows from the warmer object to the cooler object.
If two hot-air balloons are filled at the same time, but one is filled with warm air and one is filled with hot air, which
balloon do you think will rise higher?
The balloon with hot air
The balloon with warm air
Answer:
the hot air balloon
Explanation:
Warmer air is less dense than cooler air, so it rises faster compared to a cooler hot air ballon.
The balloon filled with hot air will rise higher because of its lesser density.
What is meant by density ?Density of an object is defined as the mass per unit volume of the object. It is considered as the measure of amount of substance in a give space.
Here,
Two hot-air balloons are filled at the same time. Among them, one is filled with warm air and the other one is filled with hot air.
When the balloons are released to go up, the balloon filled with hot air will rise higher. This is because of the difference in their density.
When the hot air is filled, its temperature is increased. Therefore the volume also increases which will result in the decreased density of the hot air balloon.
The balloon filled with hot air will be less denser when compared to the other. The buoyancy of the balloons is affected by their densities.
The hot air in the balloon is less denser than the cool air. So, the buoyancy of the hot air balloon will be more than that with warm air. As a result, the balloon filled with hot air will rise higher in the air.
Hence,
The balloon filled with hot air will rise higher because of its lesser density.
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How are Fahrenheit temperatures converted to Celsius temperature
a 1200 kg car moving at 15.6 m/s collides with a stationary 1500kg car what is the velocity after the impact
What is the momentum of a ball that weighs .142 Kg and has velocity of 100 meters per second?
Answer:
710 newtons
Explanation:
KE=1/2*m*v^2
1/2*.142*100^2
1/2*.142*10000
1/2*1420
710
What do electric charges have in common with magnetic poles?
Answer:
Electric charges are similar to magnetic poles because they both attract and repel without touching.
A "phaser" blast form the starship "ENTERPRISE" sends out a
light burst with a wavelength of 636 nanometers.
(nm=1. 0x10-9m) What is the frequency of the light beam?
The frequency of the light beam is 4.72 x 10¹⁴ Hz.
Frequency of the light beamThe frequency of light beam and wavelength of light is related in the following equations;
c = fλ
where;
c is the speed of light = 3 x 10⁸ m/sf is the frequencyλ is the wavelengthf = c/λ
f = (3 x 10⁸) / (636 x 10⁻⁹)
f = 4.72 x 10¹⁴ Hz
Thus, the frequency of the light beam is 4.72 x 10¹⁴ Hz.
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2.2 Why is it important to study?
Answer:
Because Studying helps us for a better life.
Explanation:
If we study well enough we can pass entrance exams for really nice colleges and universities, from that we can learn med school IIT, etc.
From doing that we can get a stable job and earn money then in the end, relax :)
Help me with this please. :))
Light is sometimes described as a wave and sometimes as a particle. Give evidence to support the wave nature of light.
Answer:
there are some ups and downs in life and particle is describing it as a result of happiness
Ideal gases are often studied at standard ambient temperature and pressure (satp). The international union of pure and applied chemistry (iupac) defines satp to be t = 25° c and p = 100 kpa.
This problem provides information about the pressure and temperature ideal gases are studied at. The answer to the questions are that all molecules have the same density, 2.43x10²⁵ mol/m³ and 2.43x10¹⁹ mol/cm³.
Idela gasesIn science, we can start studying gases with the concept of ideal gas, as they do not collide one to another and are assumed to be perfect spheres with no relevant interactions.
In such a way, one can conclude that the number density of all ideal gasses at SATP is the same, as they are assumed to be perfect spheres with equal volumes per molecule.
Moreover, when calculating the number of molecules per cubic meter, one must use the ideal gas equation as:
[tex]PV=nRT\\\\\frac{N}{V}= \frac{P*N_A}{RT}[/tex]
And plug in the numbers we are given:
[tex]\frac{N}{V}= \frac{100kPa*\frac{1000Pa}{1kPa}*6.022x10^{23}molec/mol}{8.314\frac{Pa*m^3}{mol*K}*298K}=2.43x10^{25}molec/m^3[/tex]
Lastly, we can calculate the molecules per cubic centimeter by performing the following conversion:
[tex]2.43x10^{25}\frac{molec}{m^3}*(\frac{1m}{100cm} )^3\\ \\=2.43x10^{19}\frac{molec}{cm^3}[/tex]
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What astronomical event corresponds to the passage of 1 year?.
The astronomical event corresponds to the passage of 1 year is the Earth making one revolution about the Sun.
What is an astronomical event?"Astronomical events" refers to occurrences that astronomy examines, such as eclipses or novae, whereas astronomy events refers to meetings, conferences, and other significant astronomy-related events.
In conclusion, The earth revolves the sun in one year
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A hot air ballon is filled with 2,100m3 air when deflated at 25oC. When fully inflated, the average air temperature inside the balloon is 125oC. What is the final volume of the balloon
XO
also i ate a apple
Which factors affect the flow of electric charge? Check all that apply.
The factors that affect the flow of electric charge will be Voltage and resistance.
What are the factors which affect the flow of the charge?The flow of the charge depends upon the voltage because the voltage is responsible to push or it applies the force on the particles to flow.
For example, whenever your battery gets discharged what happens is the potential difference of voltage becomes zero.
So there will not be enough force remaining in the battery to flow the charge but when we charge the battery then it regains its voltage and again pushes the charges to flow.
Now the resistance acts just opposite to the voltage because it restricts the flow of the charges so if the resistance is more then more voltage is required to flow the charge.
Thus the factors that affect the flow of electric charge will be Voltage and resistance.
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A skateboarder starts up a 3.0-m-long ramp at 3.2 m/s. What is the maximum height of the ramp for which the skateboarder goes off the end rather than rolling back down?
Answer:
initial KE = final PE
1/2 m v^2 = m g h
h = v^2 / (2 * g) = 3.2^2 / (2 * 9.8) = .52 m height of ramp
dentify three long-term effects of anorexia A. Obesity B. Starvation C. Sensitivity to cold D Hair loss
answer A ,B ,D
answer:
a. obesity, b. starvation, and d. hair-loss.
Three long-term effects of anorexia is A. Obesity B. Starvation D Hair loss, Hence option A B D is correct.
What is obesity ?Obesity is a medical condition, often considered a disease, in which excess body fat has accumulated to the point that it is threatening health. Obesity is defined as having a body mass index (BMI) of more than 30 kg/m2 (a person's weight divided by the square of the person's height); overweight is defined as having a BMI of 25-30 kg/m2. Some East Asian countries calculate obesity using lower values. Obesity is a leading cause of disability and is linked to a variety of illnesses and ailments, including cardiovascular disease, type 2 diabetes, obstructive sleep apnea, some cancers, and osteoarthritis.
Individual, social, and environmental factors all contribute to obesity. Diet, physical activity, mechanization, urbanization, genetic vulnerability, drugs, mental problems, and economic policies are some of the recognized factors.
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