Answer:
combustibility
Explanation:
generally observe as the identity of a substance change and one or more new substance form
A 300 kg grand piano is pushed up a 4 meter ramp into the back of a truck using 1200 Newtons of force. The bed of the truck is 1.25 meters off the ground. How efficient is the piano mover that pushed the piano into the truck? (2 sig figs and answer in a percentage)
Answer: KE=0.5*m*v2
Explanation: hope this helps!!!
I WILL MARK YOU THE BRAINLIEST NO LINKS
What is the difference between heat and temperature?
Heat is caused by the sun, and temperature is caused by conditions in the atmosphere.
Heat is measured in calories, and temperature is measured in joules.
Temperature measures the motion of molecules, and heat is the energy of that motion.
Temperature is measured by a thermometer, and heat is measured by a barometer.
Answer:
Temperature measures the motion of molecules, and heat is the energy of that motion.
Explanation:
Answer:
Temperature measures the motion of molecules, and heat is the energy of that motion.
Explanation:
what is hypermatropia?
Answer:
Hypermetropia (hyperopia, long-sightedness or far- sightedness) is a form of refractive error in which parallel rays of light coming from infinity are focused behind the light sensitive layer of the retina, when the eye is at rest.5 Dec 2017
Explanation:
thank me later
Mr. Vinny is somehow charged with +2.0 C, a HORRENDOUS amount of charge. Unfortunately for Mr. Vinny, a sledgehammer has been charged with –10.0 C. Since opposites attract, the sledgehammer flies at Mr. Vinny. How far away is the sledgehammer when the force between them is 4.50x1010
Answer:
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Compare the resistance of a 1.5-Amp interior light bulb of a car (operating off a 12-V battery) to the
resistance
nce of a 100-Watt bulb operating on a 110-volt household circuitry.
Answer:
The resistance of the internal light bulb of the car is higher than that of the household circuitry.
Explanation:
Given the following data;
I. Current = 1.5 A
Voltage = 12 V
To find the resistance;
Voltage = current * resistance
12 = 1.5 * resistance
Resistance = 12/1.5
Resistance = 8 Ohms
II. Power = 100 Watt
Voltage = 110 V
To find the resistance;
Power = voltage/resistance²
100 = 110/resistance²
Cross-multiplying, we have;
100resistance² = 110
R² = 110/100
R² = 1.1
Taking the square root of both sides, we have;
R = √1.1
R = 1.05 Ohms
Therefore, the resistance of the internal light bulb of the car is higher than that of the household circuitry.
PLEASE HELP! WILL MARK BRAINLIEST!
If both waves have opposite signs, then ____________ interference will occur when the two waves overlap.
A. Constructive
B. Negative
C. Positive
D. Destructive
I have a bottle of gas, the bottle can expand and contract. Initially the gas is at 1 kpa of pressure and a volume of 1 Liter, at a temperature of 290 K. Then the Temperature went to 390 K and the volume of 1.1 Liter. What is the New Pressure? Please help I have been asking this for weeks
Answer:
P₂ = 1.22 kPa
Explanation:
This problem can be solved using the equation of state:
[tex]\frac{P_1V_1}{T_1} =\frac{P_2V_2}{T_2}[/tex]
where,
P₁ = initial pressure = 1 KPa
P₂ = final pressure = ?
V₁ = initial Volume = 1 liter
V₂ = final volume = 1.1 liter
T₁ = initial temperature = 290 k
T₂ = final temperature = 390 k
Therefore,
[tex]\frac{(1\ kPa)(1\ liter)}{290\ k} =\frac{(P_2)(1.1\ liter)}{390\ k}\\\\P_2= \frac{(1\ kPa)(1\ liter)(390\ k)}{(290\ k)(1.1\ liter)}[/tex]
P₂ = 1.22 kPa
Which statement describes an example of destructive interference?
A. Light shining on a DVD surface produces different colors.
B. Light shining on a surface has gaps after passing through two
slits.
C. A lamp lights an area around a corner.
D. The inside of a seashell appears to be many different colors.
Answer:
B. Light shining on a surface has gaps after passing through two
slits.
Explanation:
Destructive interference is said to occur when two waves cancel out each other. The occurrence of this phenomenon implies that the waves have equal amplitude in opposite directions.
When light shinning on a surface has two gaps after passing through two slits, then the waves have interfered destructively which led to the gaps.
20 points plz help i dont really understand how to do this
my grades at d rn plz help lol tysm if you do < 3
. Calculate the equivalent resistance of the circuit.
c. Calculate the current through the battery.
d. How much current is passing through each resistor
[tex]\huge{ \mathfrak{ \underline{ Answer} \: \: ✓ }}[/tex]
1. Calculate the equivalent resistance in the circuit :
In the given diagram, the resistors are in series connection,
So equivalent resistance = sum of resistance of both resistors.
[tex] \large \boxed{R_{eq} =R_1 +R_2 }[/tex]
[tex]R_{eq} = 480 + 360[/tex][tex]R_{eq} = 840 \: ohms[/tex]Therefore, Equivalent resistance = 840 ohms.
2. Calculate the current through the battery :
[tex] \boxed{ \mathrm{current = \dfrac{potential \: \: difference}{resistance} }}[/tex]
[tex]i = \dfrac{120}{840} [/tex][tex]i = \dfrac{1}{7} [/tex][tex]i = 0.142 \: Amperes[/tex]Hence, current through the battery = 0.142 A
3. How much current is passing through each resistor :
Since the resistors are joined in series connection, the current flowing through each resistor will be equal = 0.142 Amperes.
___________________________
[tex]\mathrm{ \#TeeNForeveR}[/tex]
An upright object 2.80 cm tall is placed 16.0 cm away from the vertex of a concave mirror with a center of curvature of 24.0 cm. What is the focal length of this mirror?
Answer:
f = 12 cm
Explanation:
Center of Curvature:
The center of that hollow sphere, whose part is the spherical mirror, is known as the ‘Center of Curvature’ of mirror.
The Radius of Curvature:
The radius of that hollow sphere, whose part is the spherical mirror, is known as the ‘Radius of Curvature’ of mirror. It is the distance from pole to the center of curvature.
Focal Length:
The distance between principal focus and pole is called ‘Focal Length’. It is denoted by ‘F’.
The focal length of the spherical (concave) mirror is approximately equal to half of the radius of curvature:
[tex]f = \frac{R}{2}[/tex]
where,
f = focal length = ?
R = Radius of curvature = 24 cm
Therefore,
[tex]f = \frac{24\ cm}{2}[/tex]
f = 12 cm
A construction worker puts 20 J of energy in to one strike of his hammer on the head of a nail. The energy transferred to driving the nail into the wood is 8.0 J. What is the efficiency of the construction worker's hammering? (2 sig figs and answer in a percentage)
Answer:
The efficiency of the constuction is 9.0
Explanation:
What is the difference between Mass and Weight?
Answer: Mass is the quantity of matter in an object whereas weight is the force of gravity on an object.
Weight is dependent on gravity while mass is independent on gravity
Explanation:
Water is more dense in its solid state.
Water is more dense in its solid state.
This statement is true.
Answer: what is it asking
Explanation:
How do the properties of the planets change as you move away from the sun?
Answer:
as we move away from the sun the velocity of the planet decreases
Point A is 2.50 m from a +3.73*10^-8 C charge, and Point B is 1.00 m from the charge. What is the potential difference when you go from point A to point B? Include the correct sign, + or - (Hint: Does V go up or down when you go from A to B?) (Unit = V)
Answer:
-201
Explanation:
Got it right on Acellus
Answer:
-201
Explanation:
acellus
10.
Planets that are more than 1 AU from earth include:
a. Mercury, Mars, Pluto, Saturn
b. Mercury, Venus, Earth, Mars
C. Earth, Mars, Jupiter, Saturn, Uranus, Neptune
d. Jupiter, Saturn, Uranus, Neptune
Answer:
C
Explanation:
Earth Mars Jupiter Saturn,Uranus, naptune
BTB is an indicator that reacts with CO2. Based on the data that you collected in this experiment, write a conclusion to the question: Does your body breathe out CO2? State your conclusion clearly, and include the evidence from your experiment that supports it.
Answer:
Yes.
Explanation:
Yes, our body breathe out carbondioxide gas because carbondioxide gas is a waste product produced by the cells of the body during the process of respiration. The concentration of carbondioxide gas is higher in the body as compared to the outside environment and oxygen concentration is lower inside the body so diffusion occurs between the lungs and environment so the carbondioxide gas releases in the air and oxygen is trapped by the hemoglobin cells.
An electromagnetic wave has a frequency of 6.0 x 1018 Hz. What is the
wavelength of the wave? Use the equation 2 = and the speed of light as 3.0
V
x 108 m/s.
A. 2.0 x 10-26 m
B. 5.0 x 1026 m
C. 2.0 x 1010 m
D. 5.0 x 10-11 m
The wavelength of the wave is 5.0 x 10^-11 m which is option D.
Wavelength calculation.
To get the wavelength (λ) of the electromagnetic wave given we will first link it up with its relationship to its frequency (f) and also to the speed of light (c) given by the formula below.
λ = c/f
Where,
c is 3.0 x 10^8 m/s
f is 6.0 x 10^18 Hz
C/f= 3.0 x 10^8 m/s 6.0 x 10^18 Hz
wavelength = 5.0 x 10^-11 m
so, the wavelength is 5.0 x 10^-11 m.
Learn more about wavelength below.
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h2+o2 - h2o mass
Please help
H2O2 H2O
H2 + O2 → H2O. Word equation: Hydrogen gas + Oxygen gas → water. Type of Chemical Reaction: For this reaction we have a Combination reaction. Balancing Strategies: For this reaction it is helpful to start by changing the coefficient in front of H2O and so that you have an even number of oxygen atoms.
What is the frequency of a wave moving at 1782 m/s if its wavelength is 30.2 m?
Answer:
Explanation:
Wavelength = Velocity / Frequency
= 1782/30.2
= 59 metre.
Object A has a negative charge. Object A is repelled by object B. Object B is repelled by object C and attracted to object D. What are the charges on objects B, C, & D?
Answer:
B negatively charged. C negatively charged. D positively charged.
Explanation:
If A Is negative and B is repelled by it this means that B has to have the same charge as A therefore B is negatively charged.
B is repelled By C therefore meaning they both have the same charge so C has to be negatively charged.
B is attracted to D. attraction occurs between oppositely charged objects. Therefore D has to have the opposite charge of B. Since B is negative D has to be positive in order for that attraction to occur.
Which nucleus completes the following equation?
Answer:
I think B but I could be wrong
Explanation:
Find all the missing elements:
Answer: 80
Explanation:
Answer:
C=20
a = 10.8
c= 4.3
Explanation:
for every 120 joules of energy input a car waste 85 joules, find the useful energy output of the car?
Answer:
Useful Output = 35 J
Explanation:
The useful energy output of the car must be equal to the difference between the total input energy supplied to the car and the energy wasted by the car:
Useful Output = Total Input - Waste
where,
Total Input = 120 J
Waste = 85 J
Therefore,
Useful Output = 120 J - 85 J
Useful Output = 35 J
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pls use the points as my thank you
Answer:
A
Explanation:
In section A, she is moving in constant speed because there's a flat line which indicates speed remained same as time passed. In section c, there's a flat line but look at y axis for this one, it is 0 which means there's no speed during this part. B and D have varying speeds as there is a change in y axis variables as time passes.
Answer:
A
Explanation:
The line is straight at A because speed is constant in respect to time
A wave transports what
from one place to another.
A friction
OB. atoms
O C. energy
OD, amplitude
Two students are trying to decide whether or not Object A is charged. They perform the following two
tests:
Test 1: They bring Object A near a positively charged tape and observe attraction.
Test 2: They bring Object A near a negatively charged tape and observe attraction.
These two tests lead to the conclusion that Object A is
a.
charged negatively
b. charged positively
c. electrically neutral
d. charged, but with an unknown type of charge
help me pls its for my science class i need to show my work
Answer:
P = 5880 J
Explanation:
Given that,
The mass of the block, m = 30 kg
The block is sitting at a height of 20 m.
The block will have gravitational potential energy. The formula for gravitational potential energy is given by :
[tex]P=mgh\\\\=30\times 9.8\times 20\\\\=5880\ J[/tex]
So, the required potential energy is equal to 5880 J.
What is the difference between a counting loop and an infinite loop?
A ray of light has a wavelength of 284 nm in glass (n = 1.51). What is its wavelength in a vacuum? (Remember, the wavelength is longer in a vacuum.) (Unit = nm)
Answer:
428.8 nm
Explanation: