Mario and Patience are making cookies. They are ready to drop balls of dough on baking sheets. They have baking sheets made of treated glass, aluminum, stainless steel, and copper. The specific heats of these substances are:
Treated glass = 0.75 J/g • °C
Aluminum = 0.90 J/g • °C
Stainless steel = 0.50 J/g • °C
Copper = 0.39 J/g • °C
Based on the specific heat values, which sheet is going to warm up the quickest, and, therefore, bake the cookies the fastest?
(y'all don't have to answerRrrrr I'm just bORed)
Answer:
this seems really complicated
Explanation:
Answer:
Copper
Explanation:
When the north poles of two magnets are kept close , they will __________
attract
rotate
repel
remain unaffected
suppose kinetic energy is 4 joules of a moving object what will happen if we increase the speed twice
(guys pls show me the work out)
Answer:
The kinetic energy is 16 joules.
Explanation:
Kinetic energy (E) is given by:
[tex] E = \frac{1}{2}mv^{2} [/tex]
Where:
m: is the mass
v: is the speed
When the kinetic energy is 4 joules, the speed of the object is:
[tex] v_{1}^{2} = \frac{2E_{1}}{m} = \frac{8}{m} [/tex]
Now, if the speed is increased twice then we have:
[tex] E_{2} = \frac{1}{2}mv_{2}^{2} = \frac{1}{2}m(2v_{1})^{2} = \frac{1}{2}m[4(\frac{8}{m})] = 16 J [/tex]
Therefore, the kinetic energy is 4 times the initial value.
I hope it helps you!
What are the 3 types of POTENTIAL ENERGY?
Answer:
nuclear chemical gravitational
Kitty is pushing her shopping trolley along the ground. She applies a constant force to move the trolley 4 m horizontally. If she does 32 J of work, calculate how much force she is applying.
Answer:
the constant force applied by Kitty is 8 N.
Explanation:
Given;
work done by Kitty, W = 32 J
distance moved by Kitty's trolley, d = 4 m
Let the constant force applied by Kitty = F
The work done by Kitty is calculated as follows;
W = F x d
F = W / d
F = 32 / 4
F = 8 N.
Therefore, the constant force applied by Kitty is 8 N.
An object is most likely to become electrically charged by gaining or losing which type of particles?
neutral particles
positive particles
negative particles
none of the above
Answer:
negative particles
Explanation:
An atom can be defined as the smallest unit comprising of matter that forms all chemical elements. Thus, atoms are basically the building blocks of matters and as such defines the structure of a chemical element.
Generally, these atoms are typically made up of three distinct particles and these are protons, neutrons and electrons.
In Chemistry, electrons can be defined as subatomic particles that are negatively charged and as such has a magnitude of -1.
Valence electrons can be defined as the number of electrons present in the outermost shell of an atom. Valence electrons are used to determine whether an atom or group of elements found in a periodic table can bond with others. Thus, this property is typically used to determine the chemical properties of elements.
Hence, an object is most likely to become electrically charged by gaining or losing negative particles.
What does the following figure illustrate?
A. Diffraction
B. Refraction
C. Resonance
D. Interference
Answer:
the answer would be c sry if it is wrong
Each planet has several properties for which scientists colleci Uald. Angle of Axis Tilt Planet Orbital Length Speed of Day (km/s) (hours) Mass (kg) 30 24 Earth 23.4° 6.0 x 1024 Saturn 26.7° 11 5.7 x 1026 10 Another characteristic of Saturn is that it has a much thicker atmosphere than Earth. Based on is most responsible for this difference? O A. their different orbital speeds O B. their difference in length of day O C. their different axis angles of tilt O D. their difference in mass Reset Next Question
Answer:
so basically
Explanation:
ty for the free points tho ez ez ez ez jajjajajajajajjajaj ez ez ez free cash dog water
PLZ HURRY NEED HELP ASAP!!!!!!!!!!!!!!
Three components in a parallel circuit have individual resistances of r1, r2, and r3. What formula can you use to determine the total resistance of the circuit?
A. R=r1+r2+r3
B. R=1r1+1r2+1r3
C. 1R=r1+r2+r3
D. 1R=1r1+1r2+1r3
Answer:
D. 1R=1r1+1r2+1r3
Explanation:
If three components are arranged to form a parallel circuit, and the individual resistance of these components are r1, r2, and r3 respectively, the formula for finding the total resistance R is: 1R=1r1+1r2+1r3.
How do you think heat gets from a filament to the kernel?
Answer:
Explanation:
It goes thru the fluma
8. Calculate the impulse of a 14kg rock that starts at rest and falls to a speed of 6m/s?
Answer:
84 kgm/s
Explanation:
mvf - mvi = impulse
(14kg)(6m/s) - (14kg)(0m/s) = 84 kgm/s
Identify the TRUE statements about energy.
A; Energy can transform from electrical energy to heat.
B; Energy can be created and destroyed.
C; Higher potential energy can change into higher kinetic energy.
D; Energy changes are 100% efficient.
Answer:
A, C, D
Explanation:
A, C and D are true.
B is false as energy can neither be created nor destroyed.
Select the correct answer. East Asia is home to approximately what percentage of the world's population? OA. 15% OB. 50% OC. 25% OD. 30%
Answer:
C. 25%
Explanation:
You posted in the wrong section, but 25% is closest to the UN's 22% estimate.
Why does Jupiter have greater mass then other planets?
HELP ME RIGHT NOW IM BEGGING
Answer:
its either a or c im not completely sure :(
Explanation:
Answer:
i think a
Explanation:
Circle the letter of each sentence that is true about calculating the
acceleration of a moving object.
A.) If an object is moving without changing direction, then its acceleration is the change in its speed during one unit of time.
B.) If an object's speed changes by the same amount during each unit of
time, then the acceleration of the object at any time is the same.
C.) To determine the acceleration of an object, you must calculate the
change in velocity during only one unit of time.
D.) If an object's acceleration varies, then you can describe only average
acceleration.
Answer: D
Explanation:
how do you find the kinetic energy of an object?
Answer:
KE = 1/2 * m * [tex]v^{2}[/tex]
Explanation:
use the formula:
KE = 1/2 * m * [tex]v^{2}[/tex]
KE = kinetic energy in joules (J)
m = mass in kg
v = velocity in m/s
Answer:
KE=1/2mv^2
Explanation:
I hope this helps it's just the formula.
KE=1/2×mass×velocity^2
When do scholars think kites were invented?
A. 2000 AD
B. 1000 BC
C. 12,000 BC
D. Never, there's no such thing as a kite
Answer:
kites where invented 2000 AD
so its A. 2000 AD
srry if it's wrong
Answer:
I guess no. A
Explanation:
approximately 2,800 years ago.
You want to create a space station that is 50 meters in radius. If you want it to simulate Earth's gravitation, how fast must it go?
Answer:
w = 0.196 rad / s
Explanation:
To generate an acceleration similar to that of the earth, the station's centripetal acceleration must be equal to the acceleration due to gravity.
a_c = v² / r = w² r
a_c = g
we substitute
g = w² r
w² = g / r
w = [tex]\sqrt { \frac{g}{r} }[/tex]
let's calculate
w = √9.8/50
w = 0.196 rad / s
therefore the station must rotate at that angular velocity so that the acceleration in the outer wall is equal to the ratio of gravity
Look at the circuit diagram. Which of these components is part of the circuit?
A. voltmeter
B. switch
C. AC power source
D. capacitor
Answer: B.
switch
Explanation: edmentum
How many antinodes are present in harmonic 3
Answer:
a total of four nodes and three antinodes
Explanation:
please tell me if im incorrect i will fix it asap.
Calculate the density of mass 150 grams and volume 35 〖cm〗^3
Explanation:
Mass =150g = 0.15kg
Volume= 35cm^3 = 0.35m^3
Density= Mass×Volume
= 0.15kg × 0.35m^3
= 0.05 kg m^3
a rail car moving at 10m/s collides with and connect to another stationary car. What is their final velocity?
Assume they have the same mass
Answer:
read this it might help some
When a moving object collides with a stationary object of identical mass, the stationary object encounters the greater collision force. When a moving object collides with a stationary object of identical mass, the stationary object encounters the greater momentum change.
Explanation:
Describe the components of the universe.
3-4 sentences
Answer:
The Universe is thought to consist of three types of substance: normal matter, 'dark matter' and 'dark energy'. Normal matter consists of the atoms that make up stars, planets, human beings and every other visible object in the Universe.
Explanation:
Answer:
Hey mate....
Explanation:
This is ur answer.....
According the NASA's StarChild Website, "The universe is a vast open space which contains all of the matter and energy in existence. The universe contains all of the galaxies, nebulae, stars, and planets. The exact size of the universe is unknown. Scientists believe the universe is still expanding outward.
The Universe is thought to consist of three types of substance: normal matter, 'dark matter' and 'dark energy'. Normal matter consists of the atoms that make up stars, planets, human beings and every other visible object in the Universe.
Hope it helps u,
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HELP ✋‼️‼️
What happens to the speed of a sound wave as it travels from air into glass?
Water
Diamond
Glass
Air
1,493
12,000
5,640
346
Speed of
sound
(m/s)
O A. It falls to zero.
B. It decreases.
O c. It stays the same.
D. It increases
Answer:D increases
Explanation:
When sound travels from air into glass, speed of a sound wave increases. Hence option D is correct.
What is a wave ?Wave is a disturbance in a medium that carries energy as well as momentum . wave is characterized by amplitude, wavelength and phase. Amplitude is the greatest distance that the particles are vibrating. especially a sound or radio wave, moves up and down.
Amplitude is a measure of loudness of a sound wave. More amplitude means more loud is the sound wave.
Wavelength is the distance between two points on the wave which are in same phase.
Phase is the position of a wave at a point at time t on a waveform.
speed of the sound is greatest in solid and it is medium in liquid and lowest in gaseous state.
In this problem sound wave is going from air to glass, it is actually going from gaseous to solid state, as speed of sound is greatest in the solid, speed of the sound increases to 5.640 m/s.
Hence option D is correct.
To know more about sound, click :
https://brainly.com/question/29707602
#SPJ7.
Define A Gamma Ray .....---_---__☘️
Answer:
gamma ray, or gamma radiation (symbol γ or {\displaystyle \gamma } \gamma ), is a penetrating form of electromagnetic radiation arising from the radioactive decay of atomic nuclei. It consists of the shortest wavelength electromagnetic waves and so imparts the highest photon energy. Paul Villard, a French chemist and physicist, discovered gamma radiation in 1900 while studying radiation emitted by radium. In 1903, Ernest Rutherford named this radiation gamma rays based on their relatively strong penetration of matter; in 1900 he had already named two less penetrating types of decay radiation (discovered by Henri Becquerel) alpha rays and beta rays in ascending order of penetrating power.
definition of gametes?
Pa help po science po yan pang grade 7
Answer:
table 1:
1. 100/15 = 6.7 m/s
2. 100/12 = 8.3 m/s
3. 100/9 = 11.1 m/s
table 2:
1. 100/8 = 12.5 m/s
2. 100/6 = 16.7 m/s
3. 100/4 = 25 m/s
Explanation:
Which of the following statements about mechanical energy is NOT true?
O Gravitational potential energy is a type of mechanical energy.
Kinetic energy is a type of mechanical energy.
O Mechanical energy is the energy an object possesses due to its motion or its position.
O A bungee cord is not an example of mechanical energy.
HELP ASAP!
1. Why do you think it is important for people to know when the tides will be high and/or low?
Many reasons. Here are a couple:
1.) Water depth for the draft of incoming ships/vessels so they do not run aground.
2.) Distance between sea level and bottom of structures such as bridges for vessels passing underneath.