what is electric lines of force
Answer:
Electric field lines are an excellent way of visualizing electric field. Electrical lines of force can be described as a way or path, it can be straight or curved so that the tangent gives the direction of the intensity of the electric field at that point at any point.
Will mark brainiest to the first correct answer!
Why is the sky blue?
✨ Simple answers please ✨
Answer:
Gases and particles in Earth's atmosphere scatter sunlight in all directions. Blue light is scattered more than other colors because it travels as shorter, smaller waves. This is why we see a blue sky most of the time.
Explanation:
Sorry if it's not that simple ;v;
ThE sKy Is BlUe BeCaUsE yEs.
Velocity is speed in a given
• space
• direction
• number
• problem
Sandra is riding a water slide at her favorite water park. At the top of the slide,
she has 5,000 J of gravitational potential energy. After a few seconds, she has
1,928 J of gravitational potential energy. What is her kinetic energy at this point,
in J?
Answer:
3072J
Explanation:
At all points through her slide, it is important to reiterate that energy is always conserved.
Kinetic energy is the energy due to the motion of a body.
Potential energy is the energy due to the position of a body.
Based on the law of conservation of energy, energy is neither created nor destroyed but simply transformed from one form to another.
So;
At all points:
Total energy = Potential energy + Kinetic energy
Since the initial energy = 5000J which is the potential energy
This is the total energy within the system as the kinetic energy at this point is 0;
After a few seconds, the potential energy is 1928J;
Kinetic energy = Total energy - potential energy = 5000J - 1928J
Kinetic energy = 3072J
If the wavelength of a wave is quadrupied then what happens to the frequency of the wqve(Assume speed is constant)
Answer:
What happens to the wavelength of a wave if you double the frequency?
If the frequency of a wave is increased, what happens to its wavelength? As the frequency increases, the wavelength decreases. 2. If the frequency is doubled, the wavelength is only half as long.
Explanation:
The melting point of a substance is the same as its _____ point.
evaporation
sublimation
freezing
boiling
Answer:
Boiling point
Explanation:
What is the acceleration of a 10 kg block that experiences a 50 N applied force as it slides across a
horizontal surface where the coefficient of kinetic friction between it and the surface is 0.10?
4.02 m/sec² is the acceleration of a 10 kg block that experiences a 50 N applied force as it slides across a horizontal surface.
What is force?A force is an effect that can alter an object's motion according to physics. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.
force = 50 N - frictional force = ma
50 - 9.8 = ma
a = 40.2/10
a = 4.02 m/sec²
4.02 m/sec² is the acceleration of a 10 kg block that experiences a 50 N applied force as it slides across a horizontal surface.
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You work at a retail store. Recently, paychecks have had errors and there have been many employee complaints. You have been assigned to head the team to redesign the payroll software program to solve this problem. Use the drop-down menu to organize the steps you will take in writing the problem statement. Write the new payroll software program. Clearly state the vision of how the stakeholders think things will function with the new payroll system. Ask for stakeholder input on the problem and possible solutions?1.C 2.B 3.A
Answer:
C,B,A
Explanation:
Answer:
first one C
second one B
third one A
Explanation:
i hope you have a good day ;0
A frictionless pulley system connects a 150 Kg block of a flat surface with a coefficient of friction of 0.20 to a hanging 200 kg block. Determine the tension on the cord, the frictional force of the block on the surface, acceleration of descending block, and time required for a hanging block to full 10 meters.
can anyone help with this?
A car is traveling at 35.8 m/s. What acceleration would it have if it took 2.0 s to come to a complete stop?
Answer:
[tex]\boxed {\boxed {\sf a= -17.9 \ m/s^2}}[/tex]
Explanation:
Acceleration is equal to the change in velocity over the change in time.
[tex]a=\frac{v_f-v_i}{t}[/tex]
The initial velocity is 35.8 meters per second. The final velocity is 0 meters per second when the car comes to a complete stop. The time is 2.0 seconds.
[tex]v_f= 0 \ m/s \\v_i= 35.8 \ m/s \\t= 2 \ s[/tex]
Substitute the values into the formula.
[tex]a=\frac{0 \ m/s - 35.8 \ m/s }{2 \ s}[/tex]
Solve the numerator.
[tex]a= \frac{ -35.8 \ m/s} {2 \ s}[/tex]
Divide.
[tex]a= -17.9 \ m/s/s = -17.9 \ m/s^2[/tex]
The car's acceleration is -17.9 meters per square second. The acceleration is negative because the car was coming to a stop and slowing down.
What causes water to move from the liquid part of the hyrdrosphere to the cyrosphere?
Answer:
When the liquid moves through the hydrosphere, the water collects into a cloud. When it falls to the earth, turning into snow and sleet collecting in rivers and lakes.
Explanation:
Hope that helps
Answer:
The frozen part of the hydrosphere has its own name, the cryosphere. Water moves through the hydrosphere in a cycle. Water collects in clouds, then falls to Earth in the form of rain or snow. This water collects in rivers, lakes and oceans.
Plis help me !!
1. There are many different renewable resources available in Florida. Which of the following can be described as a renewable resource?
limestone
oil
phosphate
wind
Answer:
Wind
Explanation:
When a golf club hits a 0.0459 kg ball at rest, it exerts a 2380 N force for 0.00100 s. What is the speed of the ball afterwards? (Unit = m/s)
Answer:
51.85m/s
Explanation:
Given parameters:
Mass of ball = 0.0459kg
Force = 2380N
Time taken = 0.001s
Unknown:
Speed of the ball afterwards = ?
Solution:
To solve this problem, we use Newton's second law of motion:
F = m x [tex]\frac{v - u}{t}[/tex]
F is the force
m is the mass
v is the final velocity
u is the initial velocity
t is the time taken
2380 = 0.0459 x [tex]\frac{v- 0}{0.001}[/tex]
0.0459v = 2.38
v = 51.85m/s
Answer:
2.38
Explanation:
F = dp/dt --> dp = F*dt ---> p = F*t if F is constant over time so
p = 2380N* 0.001 s = 2.38 kg-m/s
A(n) ________________________ is a molecule that is soluble in both polar and nonpolar solvents.
Answer: ethanol which will dissolve in both water (a polar solvent) and gasoline (a non-polar solvent)
Explanation:
According to the concept of solubility, ethanol is a molecule which is soluble in both polar and non-polar solvents.
What is solubility?
Solubility is defined as the ability of a substance which is basically solute to form a solution with another substance. There is an extent to which a substance is soluble in a particular solvent. This is generally measured as the concentration of a solute present in a saturated solution.
The solubility mainly depends on the composition of solute and solvent ,its pH and presence of other dissolved substance. It is also dependent on temperature and pressure which is maintained.Concept of solubility is not valid for chemical reactions which are irreversible. The dependency of solubility on various factors is due to interactions between the particles, molecule or ions.
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Where on the electromagnetic spectrum can you find infrared waves? Compare to gamma, x-ray, ultraviolet, and light waves.
Answer:
Infrared, Visible light, UV light, X-ray, gamma
Explanation:
The tensions in the rope are 12 n and 10 n . What is the angular acceleration of the pulley?
Answer:
[tex]\mathbf{\alpha = 16.06 \ rad/s^2}[/tex]
Explanation:[tex]A \ frictionless \ pulley, \ whic h\ can \ be \ modeled \ as \ a \ 0.83 k g \ solid \ cylinder \ with \ a \ 0.30 \ m \ radius,[/tex] [tex]\ has \ a \ rope \ going \ over \ it[/tex] [tex]The \ tensions \ in \ the \ rope \ are \[/tex] [tex]12 n \ and \ 10 n . \ What \ is \ the \ angular \ acceleration \ of \ the \ pulley?[/tex]
[tex]From \ the \ given \ information:[/tex]
[tex]The \ moment \ of \ inerti a \ of \ a \ solid \ cylinder[/tex] [tex]I = \dfrac{1}{2}mr^2[/tex]
[tex]I = \dfrac{1}{2}(0.83)(0.3)^2[/tex]
[tex]I = 0.03735 \ kg \ m^2[/tex]
[tex]The \ net \ torque = F_1(r) - F_2(r) \\ \\ = 12(0.3) - 10(0.3) \\ \\ = 0.6 \ N.m[/tex]
[tex]Torque (T) = moment \ of \inertia (I) \times angular \ acceleration ( \alpha)[/tex]
[tex]\alpha = \dfrac{T}{I}[/tex]
[tex]\alpha = \dfrac{0.6 \ Nm}{0.03735 \ kg \ m^2}[/tex]
[tex]\mathbf{\alpha = 16.06 \ rad/s^2}[/tex]
A car's gas tank contains 58.7 kg
of gasoline, which takes up
0.0814 m^3 of volume. What is
the density of the gasoline?
Answer:
721 kg/m^3
Explanation:
Trust me bro
PLEASE HELP!!! (15 points)
The only group of elements that DO NOT form ions and are found as monatomic atoms in nature are the:
halogens
noble gases
alkali metals
alkaline earth metals
Answer:
noble gases is those group of elements that DO NOT form ions and are found as monatomic atoms in nature .
The only group of elements that DO NOT form ions and are found as monatomic atoms in nature are the: noble gases.
What are noble gases?The noble gases are a group of chemical elements with comparable qualities; under normal conditions, they are all odourless, colourless, monatomic gases with very minimal chemical reactivity. Historically, they were also known as inert gases and aerogens. Helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radioactive radon are the six naturally occurring noble gases (Rn).
Oganesson (Og) is a highly radioactive element created synthetically. Although the IUPAC has included oganesson since "group 18" and "noble gas" have been used interchangeably, oganesson may not be appreciably chemically noble and is projected to deviate from the norm and be reactive due to relativistic effects. Its chemistry has not yet been studied due to the single known isotope's relatively brief 0.7 ms half-life.
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Financial assistance intended to aid students in reaching their educational goals is called
a. benefits
b. financial aid
c. associate's assistance
d. post-secondary education
Please select the best answer from the choices provided
Help plsssss
Answer:
financial aid
Explanation:
edge
Peaks in standing wave are called
Answer:
Antinode
Explanation:
The antinode is a point along the wave that has the greatest maximum velocity in the y-direction.
Find the acceleration of a 600 kg car that experiences an impulse of 18,000 kgm/s in 0.05 seconds.
I need help with this question, i don’t understand it
Answer:
what?
Explanation:
Answer:
600m/s²
Explanation:
Given parameters:
Mass of car = 600kg
Impulse = 18000kgm/s
Time = 0.05s
Unknown:
Acceleration = ?
Solution:
To solve this problem, let us find the force that cause the impact first;
Impulse = Force x time
Force = [tex]\frac{impulse}{time}[/tex] = [tex]\frac{18000}{0.05}[/tex] = 360000N
So;
Force = mass x acceleration
Acceleration = [tex]\frac{Force }{mass}[/tex] = [tex]\frac{360000}{600}[/tex]
Acceleration = 600m/s²
Someone please help meee
Answer: Your right its ( The pressure of the substance)
Explanation: MArk me as brainlisti
Answer:
The color of the substance.
Explanation:
The color. (I think, it should be right because color shouldn't affect it.)
A sample of cobalt-60 has an activity of 2000 Bq. What will the activity be after 10 years? Cobalt-60 has a half life of 5 years.
Answer:
500.3 Bq
Explanation:
From the formula;
0.693/t1/2 = 2.303/t log (Ao/A)
Where;
t1/12 = half life = 5 years
Ao = initial activity = 2000 Bq
0.693/5 = 2.303/10 log (2000/A)
0.1386= 0.2303 log (2000/A)
0.1386/0.2303 = log (2000/A)
0.6018 = log (2000/A)
(2000/A) = Antilog (0.6018)
(2000/A) = 3.9976
A = 2000/3.9976
A = 500.3 Bq
Renewable resources need to be conserved because
a) we are using them faster than they are replenished by nature
b)they are slowly disappearing from the Earth
c) if we overuse them nature will stop replacing them
d) all of these
Answer:
(A) We are using them faster than they are replenished by nature
The Washington monument in our nations capital is 169 m high. What would be the speed of the penny as it hit the ground?
A student rides a bicycle for 15 miles in 3 hours. What is the student's speed? What else would you need to know for the velocity?
Answer:
5 miles per hour
Explanation:
if you divide 15 by 3 you get 5, therefore the student is going 5 miles per hour.
Two children, totaling 200 kg, are traveling at 10 m/sec in a 100-kg bumper car during an
amusement park ride. They deliberately collide with an empty second car, mass 100 kg, which is
at rest. What is the momentum of the empty car?
Answer:
0kgm/s
Explanation:
The momentum of the empty car is zero.
Momentum is the quantity of motion a body possess. The more the mass and velocity by which a body moves, the higher is its momentum.
Momentum = mass x velocity
Since the second car is at rest, the velocity is 0m/s;
So;
Momentum = 100 x 0 = 0kgm/s
Therefore, a body at rest has zero momentum
Calculate the resistance of an electric blanket that draws 9 A to transform 50 W of energy.
Answer:
The resistance is 0.617Ω.
Explanation:
Given that the formulas are V = I × R and P = I × V so when you substitute the V formula into P formula, you will get P = I² × R. Using this formula, you can find the resistance :
P = I² × R
50 = 9² × R
50 = 81 R
50 ÷ 81 = R
R = 0.617Ω (3sf)
The diagram shows a tennis ball being thrown vertically into the air. When the ball just left the players hand it is at the speed of 5.0 m/s . The tenis ball has the mass of 0.058 kg. Write down the equation that links kinetic energy to mass and speed
Answer:
1. KE = ½mv²
2. The kinetic energy of the tennis ball is 0.725 J
Explanation:
The following data were obtained from the question:
Mass (m) = 0.058 kg
Velocity (v) = 5.0 m/s
Kinetic energy (KE) =.?
1. Defining an expression which relates kinetic energy, mass and speed of an object.
Kinetic energy is simply defined as the energy possess by an object in motion. Mathematically, kinetic energy can be represented as:
KE = ½mv²
Where
KE => is the kinetic energy.
m => is the mass of the object.
v => is the velocity of the object.
2. Determination of the kinetic energy of the tennis ball.
Mass (m) = 0.058 kg
Velocity (v) = 5.0 m/s
Kinetic energy (KE) =.?
KE = ½mv²
KE = ½ × 0.058 × 5²
KE = 0.029 × 25
KE = 0.725 J
Thus, the kinetic energy of the tennis ball is 0.725 J.