Answer:
Depends
Explanation:
If you play baseball on a team then yes if you don't and you play on your free time then no it isn't work because your doing it for fun now if you do it on a team then you are working with your team and winning as a team
A car traveling east increases its velocity from 4 m/s to 19 m/s in 5 s. What is the acceleration of the car?
In a
boundary, the more dense
plate will move below the less dense plate
when the plates collide.
A. transform
B. divergent
C. convergent
convert 592 minutes to seconds. using one step conversion.
Answer:
35520
Explanation:
592 times 60=35520
pols
10. MR. B HAS A MASS OF 88.96 KG. HOW MUCH DOES HE WEIGHT
IN JUPITER IF THE ACCELERATION DUE TO GRAVITY IN THAT PLANET IS
24.79 M/S ? USE W=MA.
HELP
Answer:
224.80kg
Explanation:
i just used like a calculator that can figure out the weight of someone on Jupiter i hope its right-
The equation for centripetal force can be derived by substituting the equation for centripetal acceleration into Newton’s second law.
Please select the best answer from the choices provided
T
F
Answer:
True.
Explanation:
Newton's Second Law of Motion states that the acceleration of a physical object is directly proportional to the net force acting on the physical object and inversely proportional to its mass.
Mathematically, it is given by the formula;
Force = mass * acceleration
[tex] F = ma[/tex]
Centripetal acceleration is given by the formula;
[tex] Acceleration, a = \frac {v^{2}}{r}[/tex]
Where;
v is the velocity.
r is the radius.
The equation for centripetal force can be derived by substituting the equation for centripetal acceleration into Newton’s second law.
Let centripetal force be Fc
Fc = ma
Substituting the value of "a" into the above formula;
[tex] Fc = m \frac {v^{2}}{r} [/tex]
[tex] Fc = \frac {mv^{2}}{r} [/tex]
Which circuit would have the most electrical power?
Answer:
c
Explanation:
1. Aunt Minnie gives you $10 per second for 4 seconds. How much money do you have after 4 se
conds
Answer:
$40
Explanation:
10 × 4 = 40
or
10 + 10 + 10 + 10 = 40
Which of the following bounces light in another direction?
a) Sunglasses
b) lamp
c) mirror
d) prism
Answer:
I do believe the answer is D. prism
Answer:
Explanation:
either all of the above or D <3
20. If 4 X 1016 J of energy is released in a nuclear
reaction. Calculate the mass defect, Am (2 mark)
(A) 0.22kg (B) 0.44kg (C) 0.66kg (D) 0.88kg
I found this formula in an old book.
E = m · c²
It may be useful.
c = 3 x 10⁸ m/s
c² = 9 x 10¹⁶ m²/s²
4 x 10¹⁶ J = m · (9 x 10¹⁶ m²/s² )
m = (4 x 10¹⁶ J) / (9 x 10¹⁶ m²/s²)
m = 0.44 kg (choice-B)
The noble gases can be used to as laser mediums. How is the light from one gas different from light of other gases?
Answer:
light in the UV range.
Explanation:
Noble gases and halogens can combine to form lasers called Excimer, for this to happen the noble gas must be ionized with a high voltage discharge, thus forming a molecule of the type
noble gas (X) + halogen (H) → XH
This molecule is highly unstable and decomposes within a few nanoseconds, emitting light in the UV range.
The light from one gas is different from light of other gases such that they are
highly unstable.
Noble gases are also referred to as inert gases which form lasers under
some conditions.The lasers are formed when the noble gas undergo
ionization with a high voltage discharge.
The high instability and high decomposition rate which occurs within a few
nanoseconds emits light in the UV range thereby giving rise to them being
used as laser mediums.
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Anya does 20 push-ups by applying a force to elevate her body off the ground. For each push up, she does 100 J of work and takes 2 seconds. How much power per push-up did she deliver?
A. 10 W
B. 50 W
С. 120 W
D. 200 W
Answer:
its 120 all u have to do is plus 100 and 20
A 40 kg box is being pushed on a horizontal surface. The coefficient of kinetic friction between the box and the ground is 0.25. What horizontal force must be exerted on the box for it to accelerate at 1.2 m/s^2?
Answer:
Explanation:
Σf=m*a
Σf=40*1,2
Σf=48N
What is the best definition of renewable
resources?
A. A resource that will be used up.
B. Energy that can never be destroyed.
C. A resource that can be replenished.
Answer:
C
Explanation:
Continental drift is______?
A:The movement of large land areas across earth's surface
B:The current that pushed Wegners hot air balloon
C:The movement of animals from Africa and South America
Answer is:
A:The movement of large land areas across earth's surface
Jamal has a bowl of ice cream. He leaves it in the sun for too long and it melts into a liquid. Jamal then places the liquid ice cream into a freezer that is set at 5°F.
Which of the following best explains how the liquid ice cream will change in the freezer?
Answer:
It will turn back into a solid but it will take some time.
Explanation:
5. A runner of mass 60 kg accelerates at 2.0 m/s2 at the start of a
race. Calculate the force provided from her legs.
Answer:
F = 120 N
Explanation:
Given that,
The mass of a runner, m = 60 kg
Acceleration of the runner, a = 2 m/s²
We need to find the force provided from her legs. The formula for force is given by :
F = ma
Substitute all the values,
F = 60 kg × 2 m/s²
= 120 N
So, the required force is equal to 120 N.
Given:
Mass,
m = 60 kgAcceleration,
a = 2.0 m/s²As we know that,
→ [tex]Force = Mass\times Acceleration[/tex]
or,
→ [tex]F = ma[/tex]
then,
[tex]= 60\times 2.0[/tex]
[tex]= 120\ N[/tex]
Thus the above answer is right.
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What energy exists in the bonds that hold atoms together?
Answer:
Or between hydrogen and carbon (two atoms with very similar electronegativities) the bond energy is about 98 kcal. The larger the bond energy, the higher the amount of external energy it will take to pull the atoms apart, and thus the stronger the force holding the atoms together.
Explanation:
Plz mark brainliest thanks
Answer:
CHEMICAL ENERGY
Explanation:
Energy, Molecules and Chemical Reactions. Energy, potential energy, is stored in the covalent bonds holding atoms together in the form of molecules. This is often called chemical energy.
What differences would you except if, at the same time you place a yellow and blue food colouring in both HOT and COLD water?
Fick's law of diffusion states that the rate of diffusion is directly proportional to the concentration gradient, and the surface area and inversely proportional to the membrane's thickness
The differences expected are;
Yellow or blue food coloring placed in HOT water is more evenly spread with timeYellow or blue food coloring placed in HOT water diffuses than when placed in COLD waterThe reasons why the above expected differences are correct are as follows:
Diffusion that is time dependent is given by the following equation based on the fluctuation-dissipation theorem;
D(t) = μ·[tex]k_B[/tex]·T·(1 - [tex]e^{-t/(m\cdot \mu )}[/tex])
Where;
μ = The particle mobility
[tex]k_B[/tex] = Boltzmann's constant
T = The temperature in Kelvin
m = The mass of the particle
t = The time
Therefore, the rate of diffusion is directly proportional to the temperature, given that the substances have the same molecular masses
The differences to expect if, at the same time you place a yellow and blue food coloring in both hot and cold water is that;
The rate of diffusion of the food coloring will be faster when placed in the hot water, due to the higher kinetic energy (moving faster) of the liquid particles to which the coloring is added, such that the differences are as follows;
Diffusion of the coloring is more evenly spread and at a faster rate when either the yellow or blue food coloring is placed in HOT water than when placed in COLD water
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Give one example of constructive interference?
Answer:
One of the best examples of constructive interference that may be observed in our day to day life is two speakers playing same music while facing each other. At this time, music will appear louder and powerful as compared to music played by single speaker.
Explanation:
Please mark me as Brilliant
Wound coils of wire that function as magnets when an electrical current is passed through it is
called?
a. Temporary Magnets
b. Permanent Magnets
c. Electromagnets
d. Diamagnet
e. Paramagnet.
A 0.10 kg stone is thrown from the edge of an ocean cliff with an initial speed
of 20 m/s. When it strikes the water below, it is traveling at 45 m/s. What is the
change in the kinetic energy of the stone?
Answer:
79.20 joule
Explanation:
1.
A 0.10kg stone is thrown from the edge of an ocean cliff with an initial speed of 21m/s. When it strikes the water below, it is traveling at 45m/s. What is the change in kinetic energy of the stone?
ΔEk = m/2*(V2^2-V1^2) = 0.05*(45^2-21^2) = 79.20 joule
The change in the kinetic energy of the stone is 81.25 J.
The given parameters;
mass of the stone, m = 0.1 kginitial speed of stone, u = 20 m/sfinal velocity of the stone, v = 45 m/sThe initial kinetic energy of the stone is calculated as follows;
K.E = ¹/₂mu²
K.E₁ = ¹/₂ x 0.1 x 20²
K.E₁ = 20 J
The final kinetic energy of the stone is calculated as follows;
K.E₂ = ¹/₂ x 0.1 x 45²
K.E₂ = 101.25 J
The change in the kinetic energy of the stone is calculated as follows;
ΔK.E = K.E₂ - K.E₁
ΔK.E = 101.25 J - 20 J
ΔK.E = 81.25 J
Thus, the change in the kinetic energy of the stone is 81.25 J.
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What is the purpose of the antireflective coating on the glass layer of a solar
cell?
A. It keeps the solar cell from overheating.
B. It increases the charges on the semiconductors.
C. It provides better contact between the terminals.
D. It allows more solar energy to be absorbed.
The purpose of the antireflective coating on the glass layer of a solar
the cell is that It allows more solar energy to be absorbed, therefore the correct answer is option D.
What is solar energy?The energy emitted by the Sun as a form of thermal electromagnetic radiation is known as solar energy.
This solar energy is produced by nuclear fusion in the center of the Sun. Solar energy is a form of renewable source of energy.
As given in the problem statement we have to find out the best statement from the given options which describes the purpose of the antireflective coating on the glass layer of a solar cell.
In order to increase the amount of solar energy that can be absorbed, a solar cell's glass layer has an anti-reflective coating, therefore the correct answer is option D.
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#SPJ2
Answer:
D
Explanation:
What is the potential energy of a 12 kg box on a 5 m high shelf?
Answer:6
Explanation:$’n
A scientist discovers a fossil of an animal and places it in the fossil record. The organism’s bones are similar to the bones of animal T, which appears earlier in the fossil record. Which conclusion is most reasonable?(1 point)
The fossils came from the same organism.
The fossils are from an ancestor of animal T.
The fossils are from animals that lived at the same time.
The fossils are from a descendant of animal T.
DO NOT PROVIDE FALL ANSWERS/ NO ANSWER
A. The fossils cam from the same organism
Hope this helps!
The fossils came from the same organism. This conclusion is most reasonable.
What is fossil?A fossil is an item that has survived in the Earth's crust as a remnant, impression, or trace of an extinct animal or plant. The main repository for knowledge regarding the evolution of life on Earth is the complex of information preserved in fossils found all across the world.
Fossils of dinosaurs discovered in Alberta, Canada. Only a small percentage of extinct species have been preserved as fossils, and often only those with a sturdy skeleton are capable of doing so. A calcareous skeleton or shell is present in the majority of major groups of invertebrate creatures (e.g., corals, mollusks, brachiopods, bryozoans). Other types have silicon dioxide or calcium phosphate shells (both of which are found in the bones of vertebrates).
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Jeremy was asked to describe the impact of humans on the carbon cycle. He answered: "When people
drive cars they add more carbon dioxide to the atmosphere." Jeremy only received partial credit for his
answer. Which of the following answers could have received full credit?
Answer:
Humans add carbon dioxide to the atmosphere when they burn fuel in factories and other biomass sources. Humans take in carbon from the food they eat from the soil and return it back to the soil through waste products and decomposition.
Explanation:
When humans add carbon into the atmosphere the main contributors are burning of substances like fuels and biomass and from eating.
Explain how clinical thermometer is use to determine the temperature of the body
Find the y-component of this
vector:
0.250 m
18.40
Remember, angles are measured from
the +x axis.
y-component (m)
Enter
Answer:
-0.0789 m
Explanation:
Recall that the y-component comes associated with the sin(18.4) through the following trigonometric relationship:
y = 0.250 sin(-18.4) ≈ -0.0789 m
Notice it is negative since it is below the x-axis.
What does it mean to say something is proportional?
Answer: When quantities have the same relative size. In other words they have the same ratio corresponding in size or amount to something else.
Explanation: Example: "A rope's length and weight are in proportion."
Example: "The punishment should be proportional to the crime"
for a certain chemical reaction, the reactants contain 52 kj of potential energy and the products contain 32 kj how much energy is absorbed or released by the reaction. A.84 kj is released B.20 kj is released C. 20 kj is absorbed D.84 kj is absorbed
Answer:
B. 20 kj is released
Explanation:
A.P.E.X. CST
Charges may be transferred by:
A) induction
B) insulation
C) reduction
D) conduction
Answer:
D) conduction
Explanation: