Answer:
p=0.01g/cm³
Explanation:
Lets find the volume
Length+Width+Height
36×24×12=10,368cm³
mass is 104g
Formula of finding density is
p=m/v
Lets substitute the known variables
p=104g/10368cm³
p=0.01g/cm³
What is the mass of a ball that weighs 5.4 N?
Answer:
W= m*g
5.4=9.8*m
mass = 0.55
What net force is needed to acclegate a 10kg object to a rate of 4m/s^2
Answer:
acceleration of 3ms2
Explanation:
we can calculate the net force on the bowling ball from the above equation. Therefore, 30N of force is required to accelerate the bowling ball down the alleyway at a rate of 3ms2
Suppose a city with population 800,000 has been growing at a rate of 8% per year. If this rate continues, find the population of this city in 24 years.
The population in 24 years will be approximately (Round to the nearest whole number as needed.)
Answer:
2,336,000
800,000 × 0.08 = 64,000
800,000 + (64,000×24)
Which statement best describes what happens when air warms in the atmosphere?
A.Air condenses and rises up.
B.Air expands and rises up.
C.Air expands and sinks down.
D.Air condenses and sinks down.
Answer:
Air condenses and rises up
In an electric motor, electrical energy is converted into
Answer:
idrk im jus here for the points[tex]\lim_{n \to \infty} a_n \lim_{n \to \infty} a_n \lim_{n \to \infty} a_n \lim_{n \to \infty} a_n \lim_{n \to \infty} a_n \lim_{n \to \infty} a_n[/tex]∈ω≠≠
Explanation:
What is the kinetic energy of a 1.5x10^3 kg car traveling at 25 m/s?
Answer:
468750 J
Explanation:
Kinetic energy = (1/2) (mass)(velocity)^2
The kinetic energy of the car with a mass of 1.5 × 10³ kg running with a speed of 25 m/s is 468750 J .
What is kinetic energy?Kinetic energy of an object is a form of energy generated by virtue of the motion of the object. Kinetic energy is dependent on the mass and velocity of the body.
When a body starts to move its potential energy starts to convert to kinetic energy and the kinetic energy will be maximum at the highest speed. When the object slow down and pause in a position it gains potential energy again.
The kinetic energy KE = 1/2 mv²
Given mass = 0.9 Kg
velocity = 4 m/s.
KE = 1/2 0.9 Kg × 4² m/s
= 7.5 J
Therefore, the kinetic energy of the car is 7.5 J.
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How many week are in .62 years?
Answer:
32.32857
Explanation:
Searched on the web
A sound wave generated by a musical note has the characteristics presented
in the table. What is the missing value?
Medlum
Wave speed
(m/s)
Frequency
(Hz)
Wavelength
Air
346
55
6.3
Glass
5,640
55
102
Aluminum
6,420
55
?
A. 123
B. 55
C. 117
D. 73 The answer is 117
Answer:
option c
Explanation:
6420/55
116.7
approximately 117
HEY CAN ANYONE PLS ANSWER DIS!
Answer:
sodium chloride
Explanation:
1. Amplitude, loudness, volume, dynamics, and intensity are related but distinct terms. How are they different?
What is the mass of a ball being rolled at 3.5 m/s2 from a 30 N force?
Explanation:
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what is precipitation reactions
α prєcípítαtíσn rєαctíσn rєfєrs tσ thє fσrmαtíσn σf αn ínsσluвlє sαlt whєn twσ sσlutíσns cσntαíníng sσluвlє sαlts αrє cσmвínєd. thє ínsσluвlє sαlt thαt fαlls σut σf sσlutíσn ís knσwn αs thє prєcípítαtє, hєncє thє rєαctíσn's nαmє. prєcípítαtíσn rєαctíσns cαn hєlp dєtєrmínє thє prєsєncє σf vαríσus íσns ín sσlutíσn.
A precipitation reaction is a chemical reaction in which two soluble salts (ionic compounds) in an aqueous solution (solution with water as the solvent) yield insoluble, solid salt, a precipitate, as one of the products. It is generally a double replacement reaction, in which there are two ionic compounds, and their ions switch (AB+CD yield AC+BD).
Example:
[tex]\mathbb{\green{Pb(NO_{3} )_{2} +2KI ⇒2KNO_{3} +PbI_{2}}}[/tex]
N.B. The (s) indicates a solid (or precipitate), whereas (aq) means that the compound is dissolved in an aqueous (water-containing) solution.
A 40kg cannonball is fired from a cannon with a force of 300N, what is the cannonball’s acceleration?
Answer:
i dont think its possible without a picture
Explanation:
Answer:
The answer is 7.5 M/s
Explanation:
The acceleration is not given so you should divide the mass by the force to acheive your answer :)
A spring has a length of 0.270 m when a 0.300 kg mass hangs from it, and a length of 0.750 m when a 2.80 kg mass hangs from it. (a) What is the force constant (in N/m) of the spring?
Answer:
k = 51.09 N/m
Explanation:
Given,
mass, m₁ = 0.3 Kg
length of spring, x₁ = 0.27 m
Mass, m₂ = 2.80 Kg
Length of spring, x₂ = 0.750
We know that
Restoring force, F = k x
Gravitation force, F = m g
Now,
m₁ g = k x₁ ......(1)
And
m₂ g = k x₂ .......(2)
where k is spring constant
Subtracting equation (2)- (1)
(m₂-m₁)g = k(x₂-x₁)
(2.8-0.3) x 9.81 = k (0.75 - 0.27)
24.525 = k x 0.48
k = 51.09 N/m
Hence, spring constant is 51.09 N/m.
Why can someone standing behind a mirror not see the image?
Answer:
The image behind the mirror is called a virtual image because it cannot be projected onto a screen—the rays only appear to originate from a common point behind the mirror. If you walk behind the mirror, you cannot see the image, because the rays do not go there
A cannonball is fired from ground level at an angle of 60.0 ° from horizontal at a speed of 72.5 m/s. What is the vertical component of the velocity at the time of launch?
Answer:
:)
Explanation:
According to the law of conservation of energy, how are potential energy and kinetic energy related?
A. In a closed system, the potential energy at the bottom is equal to the kinetic energy at the top.
B. The potential energy of a closed system will always be more than the kinetic energy.
C. In a closed system, the kinetic energy is twice the amount of the potential energy.
D. There is no relationship between kinetic energy and potential energy.
Answer:
A. In a closed system, the potential energy at the bottom is equal to the kinetic energy at the top.
Explanation:
According to the law of conservation of energy, energy is neither created nor destroyed but transformed from one form to another.
Potential energy is the energy due to the position of a bodyKinetic energy is the energy due to the motion of a body.Based on the premise of the law of conservation of energy, both kinetic energy and potential energy are equal at the top and bottom in the system.
This way energy is conserved.
What is the momentum of a 5 Kg dog running at 10 m/s?
Answer:
the momentum is 50 kg m/s
Explanation:
The computation of the momentum is shown below;
As we know that
Momentum = mass × velocity
where
mass = 5 kg
And, the velocity is 10 m/s
So, the momentum is
= 5 × 10
= 50 kg m/s
Hence, the momentum is 50 kg m/s
The more active you are, the fewer calories you should eat. A. true B. false
Answer: false
Explanation:
the more active you are, the more calories you are burning. consuming less calories is not ideal, you need to eat more since you are burning more than normal.
Answer:False
Explanation:The more active you are, the more calories you burn. Calories are a form of energy and you need to regain that energy by eating more calories
What is the kinetic energy of a running back that has a mass of 95kg and can run 8.5 m/s?
Explanation:
KE = mv2 b. Suppose Karl uses a different puck with. = (85.0 kg)(8.5 m/s) half the mass ... How will. = 3.1X103 J the kinetic energy and work differ from KE; + PE; = KE; + PE those in ... If the puck has half the mass, it still .
Answer:
3431.875 J or 3.432 kJ
Explanation:
Kinetic energy can be found using the equation m/2*v^2.
We know m and v and we can plug in those values to get the answer.
95/2 times 8.5^2 = 3431.875 J or 3.432 kJ.
4) A sound wave has a frequency of 2700 Hz and a wavelength of 20cm. What is its
Velocity?
Answer:
velocity = 540m/s²
Explanation:
100cm = 1m
20cm= (20/100)m = 0.2m
velocity = 2700×0.2 = 540m/s²
what is 1=1?????????????????????????????//// HELP
Answer:
I am pretty sure that it is one
Answer:
Explanation: is 1
A 15.75-9 piece has a specific heat of 0.46 J/g °C, and its temperature
changes from 25°C to 175°C. How much energy does it absorb?
Answer:
Q = 1086.75 [J]
Explanation:
We must use the following equation of thermal energy, which relates the specific heat to the mass and to the change in temperature.
[tex]Q=m*C_{p}*(T_{final}-T_{initial})\\[/tex]
Where:
m = mass = 15.75 [g]
Cp = specific heat = 0.46 [J/g*C]
Tfinal = final temperature = 175 [°C]
Tinitial = initial temperature = 25 [°C]
Now replacing:
[tex]Q=15.75*0.46*(175-25)\\\\Q= 1086.75[J]\\[/tex]
How much kinetic energy does a 25 kg soccer ball have once its been kicked and has a speed of 5 m/s? HELP PLEASE I HAVE TO TURN IT IN OR I GET A 0 I BEG YOU GUYS
[tex]E_c = \dfrac{mv^2}{2}[/tex]
[tex]E_c = \dfrac{25\cdot (5^2)}{2}[/tex]
[tex]E_c = 312.5 \text{ J}[/tex]
which of the following experiments with best fall under the field of optics
a. examining her playing different sounds can make an object vibrate
b. determining how fast and object will move when different forces are applied
c. measuring how light reflects off of mirrors made from different materials
d. finding how quickly a material melts under different temperature conditions
Answer:
a
Explanation:
because your trying to decide
The measuring of how light reflects off of mirrors made from different materials falls under the field of optics. Therefore, option (C) is correct.
What is optics?Optics can be described as the branch of physics that studies the behavior, and properties of light and its interactions with matter and the construction of instruments that detect it. Optics can be described as the behavior of visible, ultraviolet, and infrared light because the light is electromagnetic radiation such as X-rays, microwaves, and radio waves exhibit similar properties.
The most general is geometric optics which treats light as a collection of rays that travel in straight lines and bend as they pass through or reflect from surfaces.
Physical optics can be described as a more comprehensive model of light, which involves wave effects such as interference and diffraction and that cannot be considered in geometric optics.
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Help plssssss would be highly appreciate ❤️❤️
Answer:
A
Explanation:
Answer:
I beleive B because its on land and the tecnotic plates are moving opposite directions pulling the ground into a tear like hole
Explanation:
what happen when you take two sides of something and pull opposite directions right it tears the same will happen to the groung.
Heyyyyyy please answer all of the questions
Sally puts the slider at position A. The bulb lights up. She moves the slider from position A to position B. What happens to the resistance of the circuit and the brightness of the bulb?
Answer:
A light bulb has a resistance inside of it, when current flows through the resistance, the electrons interact with the electrons and particles inside the resistance. Those interactions leave energy in the resistance in the form of heat, so as the current flows through the resistance, the temperature of the resistance increases until the point it starts to become bright and starts radiating light (this happens really fast, that's why the light bulbs light up almost immediately)
When she puts the slider at position A, she reconnects a circuit. Now, for that circuit a current can flow, and pass through the resistance in the light bulb, this resistance heats up, and starts radiating light.
When she returns to position B, the circuit is not connected anymore. This means that the current flow stops, then there is no more current flowing through the resistance, then the resistance beggings to cool down, and stops radiating light.
What is the equation for the normal force for a body with mass m that is at rest on a horizontal surface?
1.N = m
2.N = mg
3.N = mv
4.N = g
Your body produces sweat when you are hot.
What temperature is the sweat when it is first
produced? explain your answer.
Answer:
That's because cooling your body via sweating relies on a principle of physics called "heat of vaporization." It takes energy to evaporate sweat off of your skin, and that energy is heat. As your excess body heat is used to convert beads of sweat into vapor, you start to cool down.