Answer:
E = 0.45 kN/C
Explanation:
From; the question, we can opine that the electric field inside the hollow sphere as a result of the charge at the surface is zero.
Using the equation:
[tex]\mathbf{E = kq/r^2}[/tex] to determine the magnitude of the electric field with the radius 1.0 cm from the point charge.
where ;
constant k = [tex]8.98*10^9[/tex]
point charge q = 5.0 pC = 5.0 × 10⁻¹²; we have :
[tex]\mathbf{E = kq/r^2}[/tex]
[tex]\mathbf{E =\dfrac{8.98*10^9*5*10^{-12}}{1.0^2}}[/tex]
E = 0.45 kN/C
A drive is driving a car at 36 km per hour. When he applies brake they cause a deceleration of 3 ms-2. If he takes 1s to apply the brakes ______is the distance travelled by the car during this period
A)16.67m
B)16m
C)21.75m
D)15
Answer:
I would say 16m because of the power some brakes have say if you were to be going at 100 miles it would stop in about 3 seconds.
2. How much current is in a circuit that includes a 1.5-volt battery and a
bulb with a resistance of 2 ohms?
Answer:
V = IR
I = V/R
= 1.5 / 2
= 0.75 A
What is one energy conversion that doesn’t help.
What is the most significant factor in determining kinetic energy?
Answer:
Mechanical energy is the total energy of the body is made up of scientific energy and potential synergy, these two can be converted into one another without needing help.
The most determining factor of kinetic anergy is speed since it is squared
Explanation:
Mechanical energy is the total energy of the body is made up of scientific energy and potential synergy, these two can be converted into one another without needing help. Kinetic energy is the energy of movement, increasing the speed of the body increases the kinetic energy.
The energy powers an energy from the system configuration when changing to a lower energy configuration this is converted into mechanical energy.
The most determining factor of kinetic anergy is speed since it is squared
what is the difference between transverse wave and longitudinal wave?
Answer:
Transverse waves are always characterized by particle motion being perpendicular to wave motion. A longitudinal wave is a wave in which particles of the medium move in a direction parallel to the direction that the wave moves.
8a.The mass of a girl is 40 kg. Calculate her weight. (g = 9.8 m/s)
b.The weight of a stone is 98 N. Calculate its mass. (g = 9.8 m/s)
Explanation:
Here,
Given,
Mass(m)=40 kg
Gram=9.8m/s
Now,
Weight=m x g
or, weight= 40x9.8
=392.0
Hope you have understood
Mark me as brainliest plz
Answer:
The right answer of 8 a is 392 Newton
The right answer of 8b is 10 kg
Look at the attached picture
Hope it will help you
Good luck on your assignment
how is a runoff created
Answer:
Runoff occurs when there is more water than land can absorb
According to the Premable to Bill of Rights what is the purpose of the bill of rights guaranteed everyone's rights to stop people from depriving others of their rights
Answer:
to prevent the government from abusing people's rights
Explanation:
Bill of rights is made up of the first ten amendments to the United States Constitution.
The bill of right include Freedom of religion, speech, press, assembly and petition.
The Right to keep and bear arms in order to maintain a well regulated militia.
The Right to due process of law, freedom from self-incrimination, double jeopardy.
The purpose of this bill is to protect the rights of citizens against infringement from the government,public officials and private citizens.
What part of the Milky Way allows for determination of its rotational direction? A. Celestial body B. Galactic body C. Galactic disk D. Two long tails
Answer: C. Galactic disk
Explanation:
The part of the Milky Way which allows the determination of it rotational direction is known as the Galactic disk. This disc are shaped because they contain gases which are rich and dynamically young. It is also a part of a group of a galaxies disc is a component of disc galaxies, known as spiral galaxies and lenticular galaxies.
Answer:
Galactic disk
Explanation:
Galactic disc's are composed mostly of the galaxy's stars and a gaseous component mostly composed of cool gas and dust. The stellar population of galactic discs tend to exhibit very little random motion with most of its stars undergoing nearly circular orbits about the galactic center. This circular orbit maintains the galaxy's rotation momentum.
The table lists pressure and volume values for a particular gas. Which is the best estimate for the value of V at P = 7.0 × 103 pascals?
P (pascals) V (liters)
5.0 × 103 6.0
1.5 × 104 3.0
2.0 × 104 2.0
2.5 × 104 1.5
Answer:
2.0 × 104 2.0
Water in the Antarctica usually exists as ice ,making it very difficult to use the water or conduct experiments reqiring the water to be in liquid state .A coffee addicted physisits stationed at a research base requires about 0.8 kg of ice for his coffe on the hour
Answer:
2730.304 KJ
Explanation:
How much heat is required to convert 0.8 kg of ice at -35°C into steam at 100 C?
Given that:
mass of ice (m) = 0.8 kg = 800 g
Initial temperature ([tex]T_i[/tex]) = -35°C = 238 K
final temperature ([tex]T_n[/tex])= 100°C = 373 K
Specific heat of ice ([tex]S_i[/tex]) = 2.108 J/g.K
Specific heat of water ([tex]S_w[/tex]) = 4.18 J/g.K
Latent heat of fusion ([tex]L_f[/tex]) = 334 J/g.
Latent heat of vaporization ([tex]L_v[/tex]) = 2230 J/g.
[tex]\Delta T=T_n-T_i=373-238=135K[/tex]
Total heat (Q) required to increase the temperature of ice from the initial temperature of 238K to final temperature of 373 K is given by the equation:
[tex]Q=m\Delta TS_i+m\Delta TS_w+mL_f+mL_v\\Q=800(135)*2.108+800(135)*4.18+800*334+800*2230\\Q=227664+451440+267200+1784000=2730304J\\Q=2703.304KJ[/tex]
How fast is the van traveling relative to the ground
Answer:
5238747643782 mph
Explanation:
i assure u it is
How much net force is required to accelerate a 50.00kg mass at 4.00 m/s^2
Answer:
Explanation:
F = m*a = 50 * 4 = 200 N
Name 3 things that can be taken to reduce erosion and keep our topsoil healthy?
Answer:
Caution with grazing, recreational activities and reclaiming used lands can reduce erosion. For example, drain the soil if it collects standing water. Stay off wet soil. And, carefully fertilize your soil
Explanation:
MRU(movimiento rectilineo uniforme) un movil viaja en linea recta con una velocidad media de 12metros /segundos durante 9segundos y luego con una velocidad media de 4.8metros/segundos durante 7 segundos siendo ambas velocidades al mismo sentido. a) cual es el desplazamiento total del viaje de 16 segundos? b) cual es la velocidad media del viaje completo?
Answer:
a) 141.6m
b) 8.4m/s
Explanation:
a) to find the total displacement you use the following formula for each trajectory. Next you sum the results:
[tex]x_1=v_1t_1=(12m/s)(9s)=108m\\\\x_2=v_2t_2=(4.8m/s)(7s)=33.6m\\\\x_T=x_1+x_2=108m+33.6m=141.6m[/tex]
hence, the total distance is 141.6m
b) the mean velocity of the total trajectory is given by:
[tex]v_m=\frac{v_1+v_2}{2}=\frac{12m/s+4.8m/s}{2}=8.4\frac{m}{s}[/tex]
hence, the mean velocity is 8.4 m/s
In the formula V =E ^b d ^a, if V, E and d are the velocity longitudinal waves, bulk modulus of elasticity and density of the gaseous medium respectively, then calculate the values of a and b
Answer:
[tex]b=\frac{1}{2}[/tex] and [tex]a=-\frac{1}{2}[/tex]
Explanation:
The velocity longitudinal waves depends on the bulk modulus and the density. It is given by the formula:
[tex]V=\sqrt{\frac{\beta }{\rho} }[/tex]
Where V is the velocity , β is the bulk modulus and ρ is the density.
[tex]V=\sqrt{\frac{\beta }{\rho} }\\V=\frac{\beta^\frac{1}{2} }{\rho^\frac{1}{2} } \\V=\beta^\frac{1}{2} \rho^-\frac{1}{2}[/tex]
Therefore comparing with [tex]V =E ^b d ^a[/tex], where V, E and d are the velocity longitudinal waves, bulk modulus of elasticity and density, the values of b and a can be gotten.
Therefore, [tex]b=\frac{1}{2}[/tex] and [tex]a=-\frac{1}{2}[/tex]
Jane is standing directly behind Kevin.
Would Jane be able to attract Kevin's attention by just staring at him?
Yes/ No ...................................
Explain your answ
Answer:
NO
Explanation:
It is just impossible to know if someone is staring at you while they are standing behind you. UNLESS they turned around OR was able to see them though a mirror of some sort. :)
Walt ran 5 kilometers in 25 minutes going eastward what is his average velocity
Answer:
1/5 km/min
Explanation:
the formula for velocity is distance/time
so if i plug in the distance and time i get 5/25 or 1/5
Hope this helps!
Both X-rays and gamma rays have higher frequencies than ultraviolet rays
True or False
Answer:
i believe its True
Explanation:
Think about the oscillation of the toy shown in the video. when the toy is at the highest point of its motion, its velocity is _____ and its acceleration is _____.
Answer: i dont really get what u are asking but here is what im guessing u mean.
Explanation:Refer to the diagram shown below.
m = 50 g = 0.05 kg, the mass of the ball
A = 6 cm = 0.06 m, the amplitude
The oscillatory motion relative to the equilibrium position is
x(t) = A cos(ωt)
where
x = displacement at time t
A = amplitude, 0.06 m
ω = circular frequency
Therefore
x(t) = A cos(ωt)
The velocity function is
v(t) = - ωA sin(ωt)
The maximum velocity occurs when sin(ωt) = 1. Because the maximum velocity is 3.2 m/s, therefore
(ω 1/s)*(0.06 m) = (3.2 m/s)
w = 53.33 1/s
Therefore
x(t) = 0.06 cos(53.33t)
v(t) = 3.2 sin(53.33t)
When the spring is compressed by 4.5 cm (0.045 m) from the equilibrium position, then
0.06 cos(53.33t) = -0.045
cos(53.33t) = -0.75
53.33t = cos⁻¹ (-0.75) = 2.4189
t = 0.0454 s
The velocity when t = 0.0454 s is
v = 3.2 sin(53.33*0.0454) = 2.111 m/s
The kinetic energy is
KE = (1/2)*m*v²
= 0.5*(0.05 kg)*(2.111 m/s)²
= 0.1114 J
Answer: 0.1114 J
When the toy is at the highest point of its motion, its velocity is zero and its acceleration is negative.
Why is acceleration 0 at the highest point?Any projectile's instantaneous speed at its maximum height is zero. Because gravity gives the ball the same acceleration on the way up as it does on the way down, the time it takes to reach maximum altitude is the same as the time it takes to return to its launch position.
Because of the -ve acceleration along the vertical direction, velocity decreases until it reaches zero.
The velocity of a projectile is zero at its highest point. A projectile's acceleration is zero at its highest point.
When going up, the acceleration is negative because the speed is decreasing. When going down, the acceleration is negative because it is moving in the opposite direction, down.
Thus, When the toy is at the highest point of its motion, its velocity is zero and its acceleration is negative.
To learn more about an acceleration, follow the link;
https://brainly.com/question/12550364
#SPJ2
Describe how energy from the sun interact with substances
Answer:
substances will move faster and become warm to the touch.
Explanation:
when the radiation from the sun comes down and hits substances, the substances absorbs the radiation making them warm. the absorbed energy is transformed into heat energy. this heat energy plays an important role in regulating the temperature of the Earths crust, surface waters, and low atmosphere.
Why is it important to study rocks?
Answer:
It is imjportant to study rocks because geology gives an untouvhed pice of our history. Rocks can tell about our past, whether it is weather, animals, plants, tools, climate, or anything else, rocks can help solve world problems.
which of the following us a surface phenomenon
Answer:
Evaporation
Explanation:
Evaporation is a surface phenomenon as the molecules of the surface gets sufficient energy to overcome the force of attraction which will help in converting to the vapor phase.
Identify the sentence
When you can see both sides of an issue equality we’ll, you find it difficult to take a stand , but some people insist that you take one side or another .
Answer:
compound-complex sentence. two independent clauses, one dependent clause
Where does the rest of the energy 90% go?
Answer:the 90% is spent performing other functions
Explanation:
Which action can be explained by physics?
Answer:
Actions that underlie mathematical rules, patterns or probability distributions.
For example how fast something falls at any given point or time.
More complex actions, such as human decision making in single individuals would be way too complicated to describe in physical terms.
But note that there can be physical models of such things as traffic when we can assume statistical knowledge of behavior.
Also physical models are used to plan such things as emergency exits in big stadiums, because many thousands of people can be described as particles flowing under a given pressure.
Every time we can gain good statistical knowledge and can therefore see patterns and rules in action, we can build theoretical models to make predictions and simulations (and games btw)
Since it's fair to say that mathematics is the science of patterns, it is plausible that physical descriptions often come in mathematical formulations, so that it can be understand as an efficient language of physics.
Neighboring disciplines like chemistry relay on physical theories to build on them,and then add shortcuts to fit their needs and interests, generating an own language for their field of study. But physicists may refer to them as anadd-on to physics.
Physics can basically explain all actions wich you can express in numbers.
But note that on a fundamental level physics describes 'how' things work, not necessarily 'why' they do it this way. The source of the basic and most fundamental physical constants and rules remains a mystery till this day.But of course there are theories on that as well, wich mostly can neither be proved or falsified.
The text is my own work and based of my general knowledge and quintessence of lectures on physics and other fields I attended.
(I would really appreciate the brainliest)
The velocity time- graph of a body undergoing uniform acceleration is
Select one:
a. not a straight line
b. straight line parallel to x-axis
c. straight line inclined to x-axis
The Appalachian mountain range in the Eastern United States was once much taller than the Rocky mountain range in the Western United States. Currently, however, the Appalachian mountain range is much smaller than the Rocky mountain range
What do you think may have caused this change in height?
Answer:
The answer is erosion
Explanation:
I did this before
Balance the following chemical equations
Answer:
Enter an equation of a chemical reaction and click 'Balance'. The answer will appear below
Always use the upper case for the first character in the element name and the lower case for the second character.
To enter an electron into a chemical equation use {-} or e
To enter an ion specify charge after the compound in curly brackets: {+3} or {3+} or {3}. Example: Fe{3+} + I{-} =...
Substitute immutable groups in chemical compounds to avoid ambiguity. For instance equation C6H5C2H5 + O2 = C6H5OH + CO2...
Explanation:
which characteristics are common to amphibians, lemurs, and humans?
vertebrae, tetrapod, hair
amniotic egg, hair, biped
tetrapod, vertebrae
tetrapod, hair
Let's see what these words mean:
Vertebrae means a backbone as well as an internal skeleton
Hair is the body's way of creating a defense for the skin (and additionally to look bigger)
Tetrapod is a four footed animal
Amniotic egg means that the embryo develops inside an egg.
Biped means using two feet to walk.
Amphibians, lemurs, and humans both have vertebrae and tetrapod. While humans do not walk on four legs it is said that humans are classified as that group
Answer:
A small, lemur-like creature may have been an early ancestor of monkeys, apes, and humans.
Explanation:
An ant is on the pendulum bob of a clock. What would be its displacement in one time period?
Answer: the displacement is 0
Explanation:
Displacement is defined as the difference between the final position and the initial position.
now, one time period is defined as the time that the pendulum needs to do a full cicle (so after one time period, the position of the pendulum returns to the same place) this means that the final position and the initial position is the same, then the displacement is 0.