Answer:
Momentum is the product of the mass and velocity of an object.
[tex]p = m \times v[/tex]
[tex]p = 1000kg \times 20 \frac{m}{s} = 20000kg \times \frac{m}{s} [/tex]
How many hydrogen atoms are there in one molecule of PH3?
Answer:
On molecules of PH3, there has to be 3 atoms.
Explanation:
The Element Hydrogen (H) has 3 attoms.
The Element Phosphorus (P) has 1 atom.
These two created into the molecule PH3, would have to have only 3 attoms because they are asking how many hydrogens atoms are in the molecule PH3.
Two large parallel conducting plates carry charges of equal magnitude and opposite charge. When you place a point charge q = +3.60 nC between the plates, the force on the point charge is 22.0 μN. What is the magnitude of the surface charge density on either plate? Express your answer with the appropriate units.
Answer:
The magnitude of the surface charge density on either plate is approximately 5.41 × 10⁻⁸ C/(m²)
Explanation:
The magnitude of the charge on each of the conducting plates = Equal
The orientation of the charges on each plate = Opposite charges
The magnitude of the point charge placed between the plates = +3.60 nC
The force acting on the point charge, q = 22.0 μN
Therefore, we have;
F = E × q
E = F/q = 22.0 μN/+3.60nC = 6,111.1111 V/m
We have;
[tex]E = \dfrac{\rho }{\epsilon_0}[/tex]
Where;
ρ = The surface charge density
ε₀ = Absolute permittivity ≈ 8.85 × 10⁻¹² C²/(N·m²)
Therefore, we have;
ρ = E × ε₀ = 6,111.1111 V/m × 8.85 × 10⁻¹² C²/(N·m²) = 5.40833332 × 10⁻⁸ C/(m²)
∴ The magnitude of the surface charge density on either plate, ρ ≈ 5.41 × 10⁻⁸ C/(m²).
If an object moves 75 m/s in 15 seconds, how far did the object move?
The object moved a displacement of 1125 m.
What is meant by velocity ?Velocity of an object is defined as the time rate of change of its displacement.
Here,
Velocity of the object, v = 75 m/s
Time taken for travelling, t = 15 s
We know that, the velocity is the displacement covered per unit time.
v = d/t
Therefore, the displacement covered by the object,
d = v x t
d = 75 x 15
d = 1125 m
Hence,
The object moved a displacement of 1125 m.
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What's the Genotype for these? If your answer is something off-topic I ShAlL rEpOrT iT u.U
Pick any free letter for each trait. For example, "A" for the dominant allele and "a" for the recessive allele for the number of arms. Assuming complete dominance, the genotype for the dominant trait will always have at least one "capital" allele, so a creature with 2 arms would have genotype either AA (homzygous dominant) or Aa (heterozygous), while a creature with the recessive trait of having 4 arms will always be homzygous recessive with genotype aa.
Do y'all agree with nuclear energy? Why?
ILL MARK BRAINLIEST
PLEASE HELP
2.Write the formula associating energy with power
3.Write the formula associating potential energy with height.
(PLEASE HELP ASAP )
Explanation:
2. Power is defined as the rate of doing work. Mathematically, it can be given by :
[tex]P=\dfrac{W}{t}[/tex]
Where
W is work done or energy
t is the time taken
3. The formula of potential energy can be given by :
[tex]P=mgh[/tex]
Where
m is the mass of the object
g is the acceleration due to gravity
h is height
Hence, this is the required solution.
Attempting to both study and watch television is an example of divided attention.
T
F
Answer: True - doing both tasks at once is attempting to do two things at once which means you are dividing your attention.
Answer:
true
Explanation:
The frequency will be 6 × 1014 H z of a typical green photon of 500nm emitted by the Sun. a. TRUE
b. FALSE
can anyone help? am i right or is it c?
Physics Homework will give Brainliest!
Answer: I
dk what rhe answer is but here is my prediction :)
Explanation:
If the rope is horizontal and the ball's speed is 10 m/s, what is the tension in the ... A 2 kg iron ball is swung in a horizontal circular path at the end of a 1.6 m length of rope. ... Freddie swings a 2 kg stone at the end of a thin rope of length 1.2 m. ... of an automobile tire that turns with a frequency of 11 Hz and has a linear speed ...
During a power outage, people use generators. What does a geneszitor dia?
Converts kinetic energy to electrical energy
Converts kinetic energy to chemical energy
Converts thermal energy to kinetic energy
Converts electrical energy to thermal energy
What is the momentum of a tank with a mass of 3,500 kg and a velocity of 6 m/s?
Answer: 21000 kg*m/s
Explanation: Momentum is mass times velocity or p=mv where p represents momentum so...
3,500kg*6m/s= 21,000kg*m/s
If I hold my hand next to a Bunsen burner, what type energy transfer is occurring? Is it Conduction, Convection or Radiation and why do they occur?
Answer:
Radiation, as it is not directly above but it is off to the side
Explanation:
How does convection play a role in hurricanes
Answer:
Convection is what keeps the hurricane going in till the storm hits land.
Explanation:
Convection is the warm, moist current that rises above sea level and as it cools into water vapor it releases energy which a hurricane runs on. Once the hurricane hits land it continues to lose energy to keep it going because there's no convection from the sea currents rising above sea level to release energy.
Hope this helps.
What claim can you make about the relationship between kinetic energy and potential energy?
Answer:
The connection between the two is that potential energy transforms into kinetic energy
Explanation:
We know that potential energy is the energy that is stored within an object while kinetic energy is the energy that is in motion.
Need help on 21 will give brainliest
13.If a jet plane with a velocity of 20 m/s at t = 0 accelerates at a rate of 40 m/s²
for 3 seconds, what is its veloaty at time = 3 seconds?
Answer:
140m/s
Explanation:
V=V0+at. V=20+40*3=140m/s
Which of the following is not a change that occurred to organisms over time in the fossil record?
A. Decrease in in the number of species
B. Greater complexity
C. Increase in size
D. More diversity
Answer:A
Explanation: my teacher told me lol
The option that is not a change that occurred to organisms over time in the fossil record is A. Decrease in the number of species
A fossil record simply refers to the history of the life of the fossils. It means the remains of imprints of the organisms that are from earlier geological periods.
It should be noted that the fossil record is important to archeologists as it helps in placing events in their appropriate eras.
A change that didn't occur to the organisms over time in the fossil record is the decrease in the number of species.
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A student claims that gravitational fields exist between objects that are not in contact with each other. She creates a diagram of two figures. The width of the arrows in Figure A and Figure B represent the strength of the gravitational attraction between two objects.
The student claims the gravitational force is greater between the objects in Figure A. Which argument best supports her claim?
A. The masses of the objects in Figure A are less than the masses of the objects in Figure B.
B. The distance between the objects in Figure A is shorter than the distance between the objects in Figure B.
C. The surface area of the larger object in Figure A is greater than the surface area of the larger object in Figure B.
D. The diameters of the objects in Figure A are greater than the diameters of the objects in Figure B.
Answer:
Option B. The distance between the objects in Figure A is shorter than the distance between the objects in Figure B.
Explanation:
The force of attraction between two masses is given by the following equation:
F = GM₁M₂ / r²
Where:
F => is the force of attraction
M₁ and M₂ => are the masses of the two objects
G => is the gravitational constant.
r => is the distance between the two objects
From the above formula,
The force of attraction (F) is directly proportional to the product of the two masses and inversely proportional to the square of their apart.
This implies that:
1. An increase in the masses of the object will bring about an increase in the force of attraction and a decrease in the masses will leads to a decrease in the force of attraction.
2. An increase in the distance between the two masses will leads to a decrease in the force of attraction and a decrease in the distance between the two masses will lead to an increase in the force of attraction.
Considering the options given in the question above, option B gives the correct answer to the question.
why are the effects of collision different if the forces on the object is the same
Answer:
When two objects collide, a force is exerted on each object. The two forces are in opposite directions but the same strength. Even though the force on each object in a collision is the same strength, the objects will have different velocity changes if their masses are different.
Explanation:
*sighs* can u please give me brainliest-..... I'm literally crying....lol but PLEASE BRAINLIEST PLEASEEEE T_T
You ride your bike 5 miles east to school, then 2 miles east to Wawa, return to school, then ride 2 miles west to the library to work on your homework. What is your displacement?
Answer:
3 miles
Explanation:
5 + 2 - 2 - 2 = 3 miles
why does a thick glass bottle crack when boiling water is suddenly poured inside it
Answer:
When boiling water is poured into a thick tumbler its inner surface expands. However, due to low thermal conductivity of glass, the expansion of outer surface of the tumbler is quite small. Due to uneven expansion of the outer and inner surfaces, the tumbler breaks.
Explanation:
hope it helps please mark me as a brainliest please
ASAP pls
The position – time equation for cheetah chasing an antelope is
Xf = 1.6 m + ( 1.7 m/s2 ) t2
What is the initial velocity of the cheetah ?
A) 1.6 m/s
B) 1.7 m/s
C) 0 m/s
What is the force two changed objects exert on one another if they are 9 meters apart and one has a charge of 2.5 x 10^-6 C and the second has a charge 0f 4.5 x 10^-7 C
Answer:
The force exerted between the two charges is 0.0001248N
Explanation:
we will be using Columb's law to solve this problem.
Columb's law explains that the Force between two charged bodies is directly proportional to the product of their charges and inversely proportional to the square of the distance between them.
Mathematically,
[tex]F = K\frac{Q_1 \times Q_2}{r^2}[/tex]
WHere K = constant of proportionality = [tex]8.9875 \times 10^9 N m^2/c^2[/tex]
[tex]F = 8.9875 \times 10^9 \times\frac{2.5 \times10^{-6} \times 4.5 \times 10^{-7}}{9^2}= 0.0001248N[/tex]
The force exerted between the two charges is 0.0001248N
A force of 1000 N is exerted on a golf ball for 0.005 s. The change in momentum of the golf ball is - a 200,000 kg m//s b 50 kg m//s c 5,000 kg m//s d 5 kg m//s
Answer:
d) 5 Ns
Explanation:
Impulse = Ft = 1,000(0.005) = 5
in a system, what is the definition of a process?
Answer:
Processes are all the related activities (parts) inside the system that work together to make it function. ... It's important that processes are effective at what they do so that the system can run efficiently. Processes are the sequence of activities intended to produce a particular result.
Explanation:
Answer:A process is an instance of a program running in a computer. It is close in meaning to task, a term used in some operating system
Please help although I think I have the awnser but correct me if I’m wrong
I believe you got it correct already
-
Consider the reaction below:
AgNO3 (aq) + HCl (aq) AgCl (s) + HNO3 (aq)
If the reaction releases 68.0 kJ of energy, how many
kilocalories of energy does it release? (1 cal = 4.184 J) (Round
off decimal to nearest tenths)
Answer: 16.3 kcal
Explanation:
Given that the reaction releases 68 kJ or 68000 J. One cal is 4.184 J. Thus, 68000 J is 16.25 kilocalories.
What is exothermic reaction?An exothermic reaction is the reaction which evolves heat energy to the surroundings. The given reaction is an exothermic double displacement reaction.
The given reaction involves the displacement of nitrate and Cl groups in between silver metal and hydrogen. This reaction releases a heat of 68kJ or 68000 J
given, 1 cal of energy = 4.184 J
hence, 68000 J = 68000/4.184 = 16252 cal
One kilocalorie = 1000 calories
thus, 16252 calories = 16.25 kilocalories.
Therefore, the given reaction, releases 16.25 kilocalories of energy.
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How does convection play a role in tornadoes?
Answer: The mesocyclone
Explanation: The unsaturated air, if moved upward, will be cooler than the surrounding air and it will sink. ... This convective action (that is, the circulation of air as a result of heat transfer) produces the huge clouds commonly associated with thunderstorms and tornadoes.
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A speedboat increases its speed from 14.5 m/s to 29.3 m/s in a distance of 172 m.
(a) Determine the acceleration (in m/s/s) of the speedboat.
(b) Determine the time (in s) over which this acceleration occurs.
Answer:
a. Acceleration, a = 1.88 m/s²
b. Time, t = 7.87 seconds.
Explanation:
Given the following data;
Initial velocity, U = 14.5m/s
Final velocity, V = 29.3m/s
Distance, S = 172m
a. To find the acceleration of the speedboat;
We would use the third equation of motion;
V² = U² + 2aS
Substituting into the formula
29.3² = 14.5² + 2a*172
858.49 = 210.25 + 344a
344a = 858.49 - 210.25
344a = 648.24
a = 648.24/344
Acceleration, a = 1.88 m/s²
b. To find the time;
We would use the first equation of motion;
V = U + at
29.3 = 14.5 + 1.88t
1.88t = 29.3 - 14.5
1.88t = 14.8
Time, t = 14.8/1.88
Time, t = 7.87 seconds.
