Answer:
[tex]Q=197505J[/tex]
Explanation:
From the question we are told that:
Mass [tex]m=2500g=2.5kg[/tex]
Initial heat of pan [tex]i_h=190 \tetxtdegree[/tex]
Final heat of pan [tex]f_h=25˚C \tetxtdegree[/tex]
Generally the equation for Heat energy released is mathematically given by
[tex]Q=mC \triangle T\\\\Q=2.5*462 *(190-26)\\\\Q=1155 *(190-26)\\\\Q=1155 *(171)\\[/tex]
[tex]Q=197505J[/tex]
I WILL GIVE BRAINLYIST! To change an efficiency value to a percentage you would ______________
A. Multiply by 100
B. Divide by 100
C. Do nothing
D. Multiply by 10
If a wave has a frequency of 9.25 x 10 ^4, what is its wavelength?
A. 3.24 x 10^3 m
B. 5.5 x 10 ^-3 m
C. 4.2 x 10 ^ 3 m
D. 8.9 x 10 ^ 9 m
Which of the following is not part of the UV spectrum?
A. Gamma rays
B. Ultraviolet rays
C. Microwaves
D. X-rays
Which type of wave can cause blindness or damage to the eyes at high intensities?
A. Ionizing waves
B. Radio waves
C. Visible light
D. Infrared waves
Answer:
No1 is a
No3 is d
For the rest idont know but I hope this will help
Answer:
If you delete this your a bot.12345
Explanation:
Answer please I will mark u as brainlist
Explanation:
1) velocity = displacement/time
time = displacement/velocity
time = 200/660
= 10/33
= 0.303
2) vf = vi - a*t
0 = 30 - 9.8*t
t = 30 ÷ 9.8
t = 3.06 seconds
Bernie is driving down a highway at 28m/s. When bernie approaches a stop light, he presses on his brakes to bring his car to a stop at a constant rate of acceleration. how come bernie decrease the impulse he experiences as his car comes to a stop?
A. he could decelerate over a shorter distance
B. he could decelerate over a shorter period of time
C. he could accelerate to 30m/s before braking
D. he could apply his brakes over a longer period of time
Answer:
Explanation:B
A 120 Ohm resistor is connected in
series with a 180 Ohm resistor, and
attached to a battery. The voltage drop
across the 120 Ohm resistor is 6.00 V.
What is the voltage drop across the
180 Ohm resistor?
(Hint: How much current is flowing?)
(Unit = V)
Answer:
I=0.05 Amper
v=9 volts
Explanation:
I=V/R1
l=6/120=0.05Amper
voltage of 180ohm =IR2=0.05×180=9volts
Which nucleus completes the following equation?
Answer:
Option D. ⁸⁵₃₆Kr
Explanation:
⁸⁵₃₅Br —> ⁰₋₁e + ?
Let ⁿₘZ represent the unknown.
Thus, the equation becomes:
⁸⁵₃₅Br —> ⁰₋₁e + ⁿₘZ
Next, we shall determine n, m and Z as follow:
85 = 0 + n
85 = n
Thus,
n = 85
35 = –1 + m
Collect like terms
35 + 1 = m
36 = m
Thus,
m = 36
ⁿₘZ => ⁸⁵₃₆Z = > ⁸⁵₃₆Kr
Thus, the equation:
⁸⁵₃₅Br —> ⁰₋₁e + ⁿₘZ
Becomes:
⁸⁵₃₅Br —> ⁰₋₁e + ⁸⁵₃₆Kr
¿Que le ocurre a un folículo después de liberar a un ovulo?
nesecitabas ayuda hace 1 hora, todavia la nesecitas?
Which of the following scientists won a Nobel Prize for pioneering work in the
study of fiber optics?
O A. Marie Sklodowska-Curie
B. Warren Washington
O C. Charles Kuen Kao
D. Subrahmanyan Chandrasekhar
Scientists who won a Nobel Prize for pioneering work in the study of fiber optics is Charles Kuen Kao. Hence, option C is correct.
What is fiber optics ?Fiber optics is the study of technologies that transmit information as light pulses along a plastic or glass fiber. Thin glass fibers or filaments have been used to view inside the body since the 1930s, but they have long been deemed unsuitable for transmitting information over long distances because too much light is wasted in the process.
Charles Kao offered a solution in the 1960s: highly pure glass fibers could convey enough light. His invention has made optical fiber telecommunication practicable when combined with laser technology.
Charles Kao won the Nobel price in physics in 2009 for the groundbreaking achievements concerning the transmission of light in fibers for optical communication.
Find more on fiber optics:
https://brainly.com/question/28218005
#SPJ1
It is determined that a certain light wave has a wavelength of 3.012 x 10-12 m. The light travels at 2.99 x 108 m/s. What is the frequency of the light wave? (Round your answer to three significant figures.)
*Answer in HZ units
Answer:
id.k
Explanation:
Ray diagrams may be drawn to determine the characteristics of an image produced from a lens or mirror. When the lens produces light rays that are parallel, the image is
Question 16 options:
between F & 2F on the other side as object
F on the other side as object
non-existent
at infinity
Answer:
At infinity the image is formed
When a lens produces light rays that are parallel, the image is: C. non-existent.
A ray diagram can be defined as the graphical representation of the possible paths light takes from one point (source) to another.
Hence, a ray diagram is a graphical representation of how light interacts with a boundary, so as to help us view a point on the image of an object.
Basically, the characteristics of an image produced from a lens or mirror can be determined by drawing a ray diagram of the possible paths taken by light.
On a ray diagram, an image produced from a lens is non-existent when the lens produces light rays that are parallel because the refracted rays of light neither diverge nor converge.
In conclusion, an image cannot be formed (non-existent) when a lens produces light rays that are parallel, due to refraction.
Read more: https://brainly.com/question/20376243
If you good with science multiple choice
Answer:
If it had more or less mass, the atmosphere would be very different with either too much ammonia and methane or too little oxygen and water
Explanation:
Osmium, is the densest metal found,has density of 22.6 g/cm 3. The mass of the block is 113 g. Find its volume. (1 mark for formula and 1 mark for showing calculation)
Answer:
Volume = 5 cm³
Explanation:
Given the following data;
Density = 22.6 g/cm³
Mass = 113 grams
To find the volume;
Density can be defined as mass all over the volume of an object.
Simply stated, density is mass per unit volume of an object.
Mathematically, density is given by the equation;
[tex]Density = \frac{mass}{volume}[/tex]
Making volume the subject of formula, we have;
[tex]Volume = \frac{mass}{density}[/tex]
Substituting into the equation, we have:
[tex]Volume = \frac{113}{22.6}[/tex]
Volume = 5 cm³
List two things that happen when invisible waves of radiant energy come into contact 'with a solid.
Answer: they vibrate faster and becomes hotter
Explanation:
.
Hola puntos gratis !!!!!!!!!!!!!!!!!
Answer:
gracias
Explanation:
Hello.
Brainly points can be used for better situations, brainly points are experience that you receive by answering well.
How are crumple zones shown in the egg drop challenge?
Answer:
Suitable cushioning materials include cotton balls, packing peanuts, bubble wrap or even crumpled paper. The necessary dimensions and quantity of padding depend on the materials used and the height of the drop
Explanation:
A car of mass 800kg goes round a corner of radius 65 m at a speed of 10 m/s. What force is needed to achieve this?
Answer:
Kinetic energy?
I think
If 3 ocean waves travel past the end of the pier in 9 seconds and the wavelength of the ocean waves are 15 m long, what is the speed of the ocean wave?
Explanation:
[tex]period = \frac{3}{9} \\ f = \frac{9}{3} = 3 \: hertz \\ v = f \lambda \\ v = 3 \times 15 \\ v = 45 \: ms {}^{ - 1} [/tex]
7. Can the speed of a particle be negative? Can the
velocity of a particle be negative? Give arguments to
support your answers.
Answer:
Suppose at time t1 = zero and v1 = 50 MPH
time t2 = 10 sec and v2 = 10 MPH
Change in speed = (v2 - v1) / (t2 - t1) = (10 - 50) MPH / (10 - 0) sec
Change in speed = -40 MPH / 10 sec = - 4 MPH / sec
If you specify the velocity as always East then
change in velocity = - 4 MPH East
Had the particle finished by moving in the Westerly direction then
Change in velocity = (-10 - 50) MPH / 10 sec = -60 / 10 MPH = -60 MPH East
Where West was the positive direction
Initially v1 was 50 East and v2 was -10 East with a difference of 60 MPH
how many joules of energy is needed to move a 3 n rock 6 m
The amount of joules needed is 18
Explanation:
force×distance
If an unknown object has a mass of 150.0 grams and a volume of 50 cm3, what is the object’s density?
a bus with a mass of 3000kg has a force of 15,000 newtons applied to it while traveling down the highway. what is the resulting acceleration on the bus?
Answer:
5m/s^2
Explanation:
acceleration= force/ mass
a = 15,000/3000
a = 5m/s^2
Answer:
uqvajwvabab
Explanation:
hiusbsvbskws wjq d wbsbb akwbwbs
A student is investigating how light travels using a rubber tube. when the tube is curved the student cant see through it from one end to the other when the tube is straightened out the student can see all the way through
a) why can the student not see all the way through the curved tube
b/why can the student see all the way through the straight tube
Explanation:
A.) Since Light doesn't bend until travelling through a different transparent medium, hence it won't pass when any opaque object is placed in front of it. Rubber tube being curved and opaque,won't let light pass through it.
B.) Since light always travels in a straight line, when tube is kept straight,there is a way for it to pass and the student can see it.
People living wind farms sometimes object to them because of visual pollution and what other form of pollution?
Answer:
noise pollution
Explanation:
Visual pollution may be defined as a pollution that obstructs a view. It impairs one ability to see and enjoy a pleasant view. It is considered as an aesthetic issue.
The rotating blades of the windmill causes visual disturbances by intercepting the light of the sun and it causes moving shadows and the light flashes from the reflection of the sun. It also causes noise or sound as the blades rotates. Thus the combination of visual and acoustics exposures leads to the negative assessment of the windmills.
Therefore, people living near wind farms objects the windmills as they causes visual pollution as well as noise pollution.
Students in physical education class must _____?
1. Change into their physical education clothes prior to each class.
2. Obey all safety rules of gym.
3. Respect other students and teachers.
4. All of the above.
hii! help asap. i’ll give brainliest thanks!
Answer:
a i believe
Explanation:
3&4 or you could just do one I just need help man..
Answer:
For number 3. The solar nebula was an event where a gaseous cloud that flattened until it became a solar system with stars and planets.
Explanation:
Hope this helps!
Do you want robot referees in your favorite class?
Answer:
Sounds cool.. but what do they do?
Explanation:
A certain AM radio wave has a frequency of 1.12 x 106 Hz. Given that radio waves travel at 2.99 x 108 m/s, what is the wavelength of this radio wave? (Round your answer to three significant figures.) Answer in "m" units
Answer:
2.67×10² m
Explanation:
Applying
V = λf............... Equation 1
Where V = Velocity of radio wave, λ = wave length, f = frequency.
make λ the subject of the equation
λ = V/f................ Equation 2
From the question,
Given: V = 2.99×10⁸ m/s, f = 1.12×10⁶ Hz.
Substitute these values into equation 2
λ = (2.99×10⁸)/(1.12×10⁶)
λ = 2.66696×10² m
λ ≈ 2.67×10² m
Answer:
hey Leslie good morning. they deleted you other question lol.
The lengths of the Mercury thread in a thermometer at 30。C and 0。C are 6.0cm and 2.5cm respectively.What is the length of the Mercury thread when the thermometer is placed in pure boiling water at a pressure at 1 atmosphere.
Answer:
C yes susialoas
Explanation:
Yes they c is bkookkkakaksk
Compare and contrast reproduction and fertilization.
Answer:
ew so the difference is.. Pollination and Fertilization occur in plants during sexual reproduction.
the difference is Pollination occurs from anthers of stamens to stigma of the ovary and It is a physical process.
fertilizateion is It is the fusion of female and male gametes and It is a genetic and biochemical process.
Explanation:
this was so hard to write out
1. Find potential difference of the energy
source for a current of 7 A to be
carried through a Wire.
Answer:
182 V
Explanation:
We do:V=I.R
V is energy so
I = 7
R = 7+7+3+3+6
V= 7.26
V=182