Answer:
You will be asked to use your knowledge of physics to predict the outcome of an experiment. Then, close the video window and answer the question at right. You can watch the video again at any point.
Explanation:
Based on the video of this experiment, we can infer that the power dissipated in a wire is equal to [tex]\frac{V^2}{R}[/tex].
How to calculate the power delivered.In order to determine the amount of power that is delivered to an electrical circuit, we would use this formula:
P = IV
Where:
I is the current.P is the power.V is the voltage.But according to Ohm's law, the current flowing through an electrical circuit is given by:
I = V/R
Substituting eqn. 2 into eqn. 2, we hvae:
[tex]P=\frac{V^2}{R}[/tex]
In conclsuion, we can infer that the power dissipated in a wire is equal to [tex]\frac{V^2}{R}[/tex] and the voltage (potential difference) would be the same across two or more wires that are connected in parallel.
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In a real pully system the work supplied must be _____ the work accomplished
PLS HELP, WILL GIVE BRAINLIEST
Answer:
B. x = 50, Y = 100 ,Z= 150
sorry if it's wrong
the net force acting on the ball below is ___ N
The net force applied to the object equals the mass of the object multiplied by the amount of its acceleration." The net force acting on the soccer ball is equal to the mass of the soccer ball multiplied by its change in velocity each second (its acceleration).
Need This ASAP
What is true about protein?
A.
Your body needs it to build and repair tissue.
B.
It is best to get it from the food you eat.
C.
Too much can damage your kidneys.
D.
All of the above
Answer:
D
Explanation:
Se deja caer una piedra en un pozo y al cabo de 10s se oye el choque contra el fondo si la velocidad de sonido es de 330 m/s. ¿ Cuál es la profundidad del pozo?
Translate : Physically, a stone is dropped into a well and after 10 seconds you can hear the crash against the bottom, if the speed?
Answer : 383 m
Copernicus patterned his concept of the solar system after that of
Ptolemy
Aristarchus
Galileo
Kepler
Answer:
Aristarchus
Explanation:
don't feel like it
Please help with this
Answer:
D
Explanation:
Give reasons for the following:
a. We should not see the solar eclipse directly through our unaided eyes.
b. Dark patches are seen on the ground when sunlight passes through dense tree.
Answer:
a)The reason why people are advised not to watch the Solar Eclipse with naked eyes is that when the Moon in direcly between the Earth and the Sun, the rays from the Sun that reach the Earth are more powerful and can permanently damage our retina (most important part of the eye).
Explanation:
b ) The leaves of the trees obstruct (stop) the rays coming from the sun as there is no sun the soil to will be marshy. in some places where the leaves are not thick the sunlight penetrates to the ground... therefore one mostly sees dark patches on the ground in dense forests.
Answer:
The reason why people are advised not to watch the Solar Eclipse with naked eyes is that when the Moon in direcly between the Earth and the Sun, the rays from the Sun that reach the Earth are more powerful and can permanently damage our retina (most important part of the eye).The leaves of the trees obstruct (stop) the rays coming from the sun as there is no sun the soil to will be marshy. in some places where the leaves are not thick the sunlight penetrates to the ground, therefore one mostly sees dark patches on the ground in dense forests.How can we relate density and pressure in liquids ??
How can we relate density and pressure in liquids ??
[tex] \huge{ \texttt{ \red{answers}}}[/tex]
It is the pressure at each point of a static fluid. When we immerse ourselves in a liquid, the pressure increases with depth.In the case of a liquid (constant density) the pressure increases linearly with depth.⭐ ----------------------------------------------------------------------------------⭐
[tex] \bold{BRAINLY MENTALMENTE}[/tex]
hey guys this is physical science can i get help
answer:
1=c
2= d
3=e
4=a
5=b
7
Select the correct location on the image.
Objects A and B are brought close to each other. Object A will soon become positively charged. Identify the charge that must transfer for this
situation to occur.
+
A
B
Answer:
Explanation:
For A to become positively charged, a + charge must transfer from B to A.
The charge that must transfer for object A to become positively charged is the negative charge in object A.
What is charging by conduction?Charging by conduction occurs when a charged object causes the flow of electron when it comes in contact with an uncharged object.
An object can either be negatively or positively charged. An object is said to be positively charged when it contains more protons than electron.
Therefore, for object A to be positively charged, the charge that must transfer for object A to become positively charged is the negative charge.
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The temperature of a black body is 500 and its radiation is of wavelength 600 . If the number of oscillators with energy is 100 , 000, calculate the number of oscillators in the black body with energy 1 . (Accoding to Max. Planck, the number of oscillators with energy ℎ at a particular frequency is given by = = − ( ⁄ ) = − ( ⁄ ) (10 Marks) (b) Calculate the peak wavelength of a black body's radiation if the black body is at a temperature of 20 , 000 . (5 Marks)
Answer: An equation is missing in your question below is the missing equation
a) ≈ 8396
b) 150 nm/k
Explanation:
A) Determine the number of Oscillators in the black body
number of oscillators = 8395
attached below is the detailed solution
b) determine the peak wavelength of the black body
Black body temperature = 20,000 K
applying Wien's law / formula
λmax = b / T ------ ( 1 )
T = 20,000 K
b = 3 * 10^6 nm
∴ λmax = 150 nm/k
If an object has a mass of 15 kg and has a weight of 30 N, on some remote
planet, what would be the acceleration due to gravity on that planet?
who plays rob.lox , adopt me here?
Want to be friends?
What are some examples of gravitational forces that keep an object in orbit? Pls give at least 2-3 example if you can.
Answer:
Without any external forces a moving object will continue to move in a straight line. The gravitational force between the two objects will provide the centripetal force to keep the objects moving around one another.
1. satellite in orbit around the earth (motion of earth is negligible)
2. moon in orbit around the earth (center of motion several thousand miles
from center of earth)
3. earth in orbit around sun (center of rotation close to center of sun)
4. binary stars (if masses of stars are equal center of rotation is in middle)
an athlete in a hammer-throw event swings a 7.0-kilogram hammer in a horizontal circle at a constant speed of 12 meters per second. The radius of the hammer's path is 2.0 meters.
Answer:
ac = 72 m/s²
Fc = 504 N
Explanation:
We can find the centripetal acceleration of the hammer by using the following formula:
[tex]a_c = \frac{v^2}{r}[/tex]
where,
ac = centripetal acceleration = ?
v = constant speed = 12 m/s
r = radius = 2 m
Therefore,
[tex]a_c = \frac{(12\ m/s)^2}{2\ m}[/tex]
ac = 72 m/s²
Now, the centripetal force applied by the athlete on the hammer will be:
[tex]F_c = ma_c\\F_c = (7\ kg)(72\ m/s^2)[/tex]
Fc = 504 N
HELP IM TIMED. ILL MARK BRAINLIEST PLSSSSSS.
A model rocket accelerates at 15.3 m/s2 with a force of 44 N.
Calculate the mass of the rocket. Round your answer to the nearest tenth of a kg.
The mass of the rocket is kg.
Fill in the blank above. Also what is the formula to find the mass. Include that in the answer pls.
Answer:
According to Newton's Second Law of Motion :
Where,
F = Force Applied
m = Mass of the object
a = Acceleration
Now, we will use this law to solve this question.
Given :
Acceleration or a = 15.3 m/s²
Force = 44 N
Mass = ?
Substitute, the given values in the formula.
F = ma
⇒ m = F/a
m = 44/15.3
m = 2.9 kg
Answer:
7.0 n
Explanation:
How far can you get away from your little brother with the squirt gun filled with paint if you can travel at 3 m/s and you have 0.25 min before he sees you?
Answer:
s = 45 m
Explanation:
The velocity given in the question is uniform. Hence, the formula for the uniform velocity shall be used here. The formula is given as follows:
[tex]s = vt[/tex]
where,
s = distance traveled away from the brother = ?
v = constant speed = 3 m/s
t = time taken = (0.25 min)(60 s/1 min) = 15 s
Therefore, using these values in the formula we get:
[tex]s = (3\ m/s)(15\ s)\\[/tex]
s = 45 m
PLEASE HELP WILL MARK BRAINLIEST
Answer:
Protium
Explanation: Protium is an isotope of hydrogen that is composed of one proton and one electron. It is the most abundant form of hydrogen.
Answer:
To be honest. I think all three of them are hydrogen i know Deuterium and Tritium are so I decided to research about protium and it said its also hydrogen.
Explanation:
Protium Deuterium and Tritium are all isotopes of hydrogen
Help me please
Which line shows the LOWEST frequency?
To pull apart two pieces of wood, you can apply a force of 50 N to a lever. The lever applies a force of 640 N. What is the mechanical advantage of
the lever?
A.13
B.17
C.0.08
D.32,000
3/8 of light initial intensity is absorbed in the breaker with length of 2cm filled with 9% solution. Find the length of the beaker should be used to get transmittance 1/3 for the same solution
Answer:
Assume I1 = Io * T1 transmission proportional to thickness
I2 = Io * T2 I is intensity of light absorbed (3/8 absorbed)
I1 / I2 = T1 / T2
T2 = T1 * (I2 / I1) = 2 * (2/3 / 3/8) = 2 * 16/9 = 32/9 thickness for 2/3 absorbed
The length of the beaker when the transmittance is changed to one-third is 13.78 cm.
The given parameters;
length of the beaker when 3/8 of the light intensity is absorbed = 2 cm = 0.02 mTo find:
the length of the beaker when there is 1/3 transmittanceThe length of the beaker is calculated by applying Beer-Lambert law;
[tex]\frac{I}{I_o} = e^{-cl}[/tex]
[tex]\frac{I_1}{I_0} = e^{-cl_1} = \frac{3}{8} \ ----(1)\\\\\frac{I_2}{I_0} = e^{-cl_2}= \frac{1}{3} \ ---- (2)[/tex]
divide equation (1) by equation (2);
[tex]\frac{e^{-cl_1}}{e^{-cl_2}} = \frac{3}{8} \times \frac{3}{1} \\\\ (c \ is \ constant \ for \ both) \\\\e^{-l_1 + l_2} = \frac{9}{8} \\\\l_2 - l_1 = ln(\frac{9}{8} )\\\\l_2 - 0.02 = 0.1178\\\\l_2 = 0.1178 + 0.02\\\\l_2 = 0.1378 \ m\\\\l_2 = 13.78 \ cm[/tex]
Thus, the length of the beaker when the transmittance is changed to one-third is 13.78 cm.
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Question 3 of 25
Matter can undergo chemical reactions and nuclear reactions. Which feature
of the components only stays the same in chemical reactions?
A. Chemical bonds between atoms
B. Number of compounds
O
C. Types of compounds
O D. Numbers of atoms
Answer:
D. Numbers of atoms
Explanation:
The feature of the components of matter that only stays the same in chemical reactions is: D. numbers of atoms.
What is the law of conservation of matter?The law of conservation of matter (LOCOM) states that mass can neither be created nor destroyed in any chemical reaction.
This ultimately implies that, a balanced chemical equation would always require the same number of atoms on both the reactant side and product side of a chemical reaction.
In conclusion, we can deduce that the feature of the components of matter that only stays the same in chemical reactions is: D. numbers of atoms.
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Why does it take more time for a larger sample of water to freeze?
Answer:The greater the amount of water that there is it will take longer for the water to freeze because more heat has to be dissipated into the environment
Explanation:
Answer:
The greater the mass of water, the more heat has to be dissipated into the environment and the longer it will take to freeze. The greater the surface area of the water, the faster the water will lose its heat and freeze.
Miranda performed an experiment to determine what makes an object sink
or float in water. She experimented with 10 different items and recorded
the results. Which of the following is correct?
The object's shape is the only determining factor.
The size of the object determines if it will sink or float
The mass and volume of an object determine if it will sink or float
Light-colored objects tend to float more easily than darker-colored object
Answer:
I guess the answer is
-The mass and volume of an object determine if it will sink or float
Explanation:
An object that has a higher density than the liquid it's in will sink. An object that has a lower density than the liquid it's in will float.
density=mass/volume
Over the course of 30 seconds, 3 waves hit the shore. What is the period of the waves?
Answer:
3 per 10 seconds.
Explanation:
If it's 30 seconds and 3 waves hit throughout that time period, dividing should get you your answer..
30/3 = 10.
Hope this helped!
Source(s) used: N/A
Question 5
1 pts
A 1.50 cm tall object is placed 20.0 cm from a concave mirror whose radius
of curvature is 30.0 cm. What is the image height?
Answer:
b
Explanation:
Which of the following is an electric potential?
O A. 2.50
B. 2.5 N
C. 2.5 V
O D. 2.53
Answer:
B
Explanation:
just answered that question
Caso #1 Leo Messi está jugando la final de la Champion league 2019-2020 y va a cobrar un tiro libre importante, necesita aplicar un análisis para poder alcanzar su objetivo que es acertar el gol. Responder
Answer:
Tiene que patear el balón cerca del nivel del suelo para conseguir el gol.
Explicación:
Leo Messi necesita patear el balón no en el aire, en el nivel del suelo para poder meter el gol para el equipo. Delante del fútbol hay muchos jugadores del equipo contrario dispuestos a detener el tiro libre de Leo Messi. Cuando Leo Messi patea el balón en el aire, los jugadores también saltan en el aire para detener el tiro libre que atraviesa la cabeza y para conseguir el gol Leo Messi tiene que evitar patear el balón en el aire y patear el balón cerca del nivel del suelo. que puede atravesar a los jugadores oponentes cuando lo saltan para detener el balón a través de sus cabezas para que el balón pase por debajo de sus pies y llegue a la portería.
is there any way u can help me
Answer:
get help with your work
try understand your work
ask your teacher for assistance or class
or maybe cheat but understand the work first if you wanna