Answer:
Substance A will release more heat.
Explanation:
Let suppose that both substances experiment an entirely sensible heat process and are incompressible and begin at the same temperature. Physically speaking, specific heat ([tex]c[/tex]), measured in kilojoules per kilogram-degree Celsius, can be described by following expression:
[tex]c = \frac{Q}{m\cdot (T_{f}-T_{o})}[/tex] (1)
Where:
[tex]Q[/tex] - Released heat, measured in kilojoules.
[tex]m[/tex] - Sample mass, measured in kilograms.
[tex]T_{o}[/tex], [tex]T_{f}[/tex] - Initial and final temperatures of the sample, measured in degrees Celsius.
If we know that [tex]c_{A}> c_{B}[/tex], [tex]m_{A} = m_{B}[/tex], [tex]T_{A,o} = T_{B,o}[/tex] and [tex]T_{A,f} = T_{B,f}[/tex], then we have the following inequation:
[tex]\frac{Q_{A}}{m\cdot (T_{A,f}-T_{A,o})} > \frac{Q_{B}}{m\cdot (T_{B,f}-T_{B,o})}[/tex]
[tex]Q_{A} > Q_{B}[/tex]
Substance A will release more heat.
You volunteer to travel to a newly discovered planet about 30 light years from earth. At what speed do you need to travel to reach the planet in 6 years?
define amplitude of sound
A list of heat transfer examples are listed below. Which is NOT an example of convection?
A. Water boiling in a pot
B. Lava in a lava lamp moving
C. Hot pavement burning your feet
D. A hot air balloon rising
I’ll give Brainliest!
Answer:
C. Hot pavement burning your feet
Explanation:
Convection is a type of process where heat travels upwards and cold travels downwards.
If one wall of a room consists of a large flat mirror, how much larger will the
room appear to be? Explain your answer.
Answer:
The room will appear to be twice as big because the object distance is equal to the image distance. The mirror takes into account the distance between the mirror and how big the room is.
Does the mass of the objects you are charging influence the amount of electric force created in an electric field?
Explanation:
Both gravitational and electric forces decrease with the square of the distance between the objects, and both forces act along a line between them. In Coulomb's law, however, the magnitude and sign of the electric force are determined by the electric charge, rather than the mass, of an object.
Electric fields are often associated with what other kind of field?
a. Magnetic Fields
b. Particle Fields
c. Nuclear Fields
d. Corn Fields
NEED HELP VERY FAST
Answer:
The answer is A :)
Explanation:
(I'm good at this kind of stuff but sometimes I get things wrong. We all do)
I believe your answer is A though
Feel free to correct me if i'm wrong :)
To who shall answer...
Thank You Very much for am eternally grateful.
I guess the answer is second one
help me pls i really need it...
Answer:
directly proportional
Explanation:
.........,.............
Two ropes are identical. A wave traveling through the first rope has a frequency of 1.5 hertz and a wavelength of 6 meters. What is the frequency of a wave in the second rope if its wavelength is 2 meters?(1 point)
3 hertz
4.5 hertz
9 hertz
1.5 hertz
the answer is b 4.5 hertz
i will name brainliest please help
Answer:
Inverse
Explanation:
help me pls
really struggling with dat
At 10°C, the gas in a cylinder has a volume of 0.250 L. The gas is allowed to expand to 0.285 L.
What must the final temperature be for the pressure to remain constant? (Hint °C + 273 = K.)
282 K
284 K
323 K
248 K
one the energy level diagram what is represented by the letter
a
b
c
Answer:
see below
Explanation:
B is the activation energy
A is the enthalpy change which is negative
C is the product of oxygen and ethanol which is carbon dioxide and water
hope this helps, please mark
What can be found in every skeletal muscle?
A.
nerves, bones, cartilage, and connective tissue
B.
tendons, cartilage, nerves, and blood vessels
C.
muscle fibers, nerves, connective tissue, and blood vessels
D.
tendons, nerves, blood vessels, and bones
Please select the best answer from the choices provided.
A
B
C
D
Answer:
Its C
Thank me later
Now bye
please help anyone i will mark brainliest
can you give me an example about radiation
Explanation:
A burning candle emits radiation in the form of heat and light. The Sun emits radiation in the form of light, heat, and particles.
Answer: The energy from the sun is one great example of radiation. The sun emits light in a broad range of wavelengths which all contain energy. These waves are also discussed in the climate section for energy balance. The waves are emitted from the sun and travel through space and hit the earth and other planets.
EXTRA EXAMPLES: heat from a stove burner.
visible light from a candle.
x-rays from an x-ray machine.
alpha particles emitted from the radioactive decay of uranium.
sound waves from your stereo.
microwaves from a microwave oven.
electromagnetic radiation from your cell phone.
Why does an increase in temperature result in an increase in reaction rate?
Answer:
An increase in temperature typically increases the rate of reaction. An increase in temperature will raise the average kinetic energy of the reactant molecules. Therefore, a greater proportion of molecules will have the minimum energy necessary for an effective collision.
Answer:
When we increase the temperature in a chemical reaction, this increases the particles kinetic energy, making them move much faster than they were before. This also increases collision between the particles and the rate of reaction.
Write down the equation that links energy transferred, power and time.
Answer:
Power = Energy transferred / time
Explanation:
Which three characteristics describe the energy of a wave? (2 points)
a
Frequency, the crest, and the trough
b
Wavelength, amplitude, and frequency
c
Speed, amplitude, and medium
d
Frequency, wavelength, and medium
which of the following has the most energy
the answer is blue light
Displacement a combination of
Answer:
Displacement a combination of distance
Explanation:
I'm not sure eh
Being overweight or obese increases the risk of:
A. Diabetes
B. Heart disease
C. Stroke
D. All of the above.
theanswer is b.heart disease
Calculate the volume of this regular solid.
A cone 4.5 centimeters high with a radius of 3 centimeters. Label B is pointing to the circular base of the cone.
What is the volume of the cone?
Use the button on your calculator to complete this problem.
Round at the end to the nearest hundredth.
Answer:
42.41
Explanation:
Why does it take a long time for the earth to rotate?
24hrs or i full year as in 365 days
Answer:
earth takes a long time to rotate due to the tidal effects the moon has on earth's rotation
Explanation:
I hope this helps!
5. The speed of a car is 15m/s. Its speed in km/h is *
Answer:
54 Km per hour..
Explanation:
Multiply the speed value by 3.6
Three 3-ohm resistors are connected in parallel. The total resistance for the resistors is
Explanation:
I think the total resistance of the resistors is 1 ohm . it is also known as equivalent resistance.
hope it helps.
4. Premature wrinkling due to overexposure to the Sun, what am I?
Premature Aging
Mark as brainlist
. The naturally occurring charge on the ground on a fine day out in the open country is –1.00nC/m2 . (a) What is the electric field relative to ground at a height of 3.00 m? (b) Calculate the electric potential at this height. (c) Sketch electric field and equipotential lines for this scenario.
Answer:
a) -113 N/C
b) -423.71 V
Explanation:
The Step by step explanation and solution has been attached in the attachment section.
I_ _ _ _ r _ _ = heat energy
Answer:
light ray i think
Explanation:
please help this is so hard and frustrating i will name brainliest
Answer:
1.308104*10^-8 N (1.31*10^-8 N when rounded)
Explanation:
The mathematical formula for gravitational force is F = G Mm /r^2 where G is the gravitational constant which is measured 6.674 *10^ − 11 N (m/kg) ^2.
Since both objects, M and m, have masses of 70kg and the distance r is 5 meters, then we can plug these values into the formula:
F=GMm/r^2
F=(6.674*10^-11)(70)(70)/(5^2)
F=(6.674*10^-11)(4900)/25
F=(3.27026*10^-7)/25
F=1.308104*10^-8
So the gravitational force of attraction between the two objects is 1.308104*10^-8 N.