Answer:
Kinetic and potential energy.
Explanation:
An object possessing mechanical energy has both kinetic and potential energy, although the energy of one of the forms may be equal to zero. A moving car has kinetic energy. If you move the car up a mountain, it has kinetic and potential energy. A book sitting on a table has potential energy.
PLEASE HELP 15 POINTSexplain properties and importance of light and how it separates into colors
Answer:
It is not a property of light. It is your eyes and brain.
Specifically, the three kinds of cone cells in our eye that are sensitive to different ranges of the electromagnetic spectrum. The fact that there are three means that color is three dimensional, and is the reason the pure colors form a circle even though the spectrum of wavelengths is linear.
Visible light is part of the electromagnetic spectrum; light waves of different frequencies and wavelengths are distinguished as colors by the human eye. A prism can separate the colors of white light (dispersion) because different frequencies of light have different refractive indices for a given material.
A tennis ball and a bowling ball are both rolled down a bowling lane. If the
balls are rolling in the same direction at the same speed, which of the
following is true?
A. The balls have the same momentum because they have equal
velocities.
B. The tennis ball has greater momentum because its mass is less
than the mass of the bowling ball.
C. The balls have no momentum because they have equal velocities,
D. The bowling ball has greater momentum because its mass is
greater than the mass of the tennis ball.
Answer:
D. The bowling ball has greater momentum because its mass is
greater than the mass of the tennis ball.
Explanation:
The momentum of a body is defined as the product of mass and velocity. That is;
p = mv
This implies that the momentum of a body depends both on its mass and velocity respectively.
The question clearly states that the tennis ball and the bowling ball have the same speed and are rolling in the same direction. However, the bowling ball has a larger mass compared to the tennis ball hence it possesses a greater momentum than the tennis ball.
A 4.03 x 10-5 F capacitor stores 5.15 x 10-3 J of energy. What is the voltage across the capacitor?
Answer:
V = 0.06255 Volts
Explanation:
Given the following data;
Capacitance = 4.03 * 10^{-5} F
Energy = 5.15 * 10^{-3} J
To find the voltage across the capacitor;
Mathematically, the energy stored in a capacitor is given by the formula;
E = ½cv²
Where;
C is the capacitor
E is the energy stored
v is the voltage.
Substituting into the formula, we have;
5.15 * 10^{-3} = ½ * 4.03 * 10^{-5} * v²
0.00515 = 0.00002015 * v²
V² = 0.00002015/0.00515
V² = 0.003912
Taking the square root of both sides, we have;
V = √0.003912
V = 0.06255 Volts
Answer:
16 V
Explanation:
someone said 16 V in the comments and it is the correct answer for acellus.
A 12 kg mass is lifted to a height of 2 m. What is its potential energy
at this position?
Answer:
PE = 23.8 J
Explanation:
It's known through the International System that the gravity of the earth is 9.8 m/s², so we have as...
Data:
m = 12 kgg = 9.8 m/s²h = 2 mPE = ?Use formula:
[tex]\boxed{\bold{PE=m*g*h}}[/tex]Replace and solve:
[tex]\boxed{\bold{PE=12\ kg*9.8\frac{m}{s^{2}}*2\ m}}[/tex][tex]\boxed{\boxed{\bold{PE=23.8\ J}}}[/tex]The potencial energy is 23.8 Joules.
Greetings.
Which of these is the largest?
a. star
b. nebula
c. galaxy
d. sun
Help! series circuit practice, I'm not sure what formula to use.
Answer:
RT=R1+R2+R3
Explanation:
what are the variables in an experiment that tests the distance honey flows at different temperatures? identify the independent variable (the one we can control) and the dependent variable (the one we cannot control).
Answer:
The distance that the honey flowed would be the dependent or outcome variable and the temperature of the honey would be the independent variable.
The dependent variable is what is being measured in an experiment. You can remember it by thinking “it depends on what you’re changing.”
The independent variable in an experiment is what is being changed. You can remember this by thinking “the Independent variable is what I as the scientist change.”
Explanation:
mark me brainliest plz
In the experiment " Temperature" is dependent variable and the distance honey flows is independent variable.
What is independent variable ?It is the factor that one can purposely control or change to observe its effect , is called independent variable.
What is dependent variable ?It respond to the change in the independent variable , is called dependent variable.
Hence temperature is dependent and distance honey flow is independent variable.
https://brainly.com/question/1479694
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The increase in volume of matter that occurs when matter is heated. a) Contraction b) Expansion c) kinetic energy d) Volume
Answer:
b) Expansion
Explanation:
In science, matter can be defined as anything that has mass and occupies space. Any physical object that is found on earth is typically composed of matter. Matter are known to be made up of atoms and as a result has the property of existing in states.
Generally, matter exists in three (3) distinct or classical phases and these are; solid, liquid and gas.
A physical change can be defined as a type of change that involves an increase or decrease in the volume of a physical object (object). Also, this change can be reversed to the original state under certain conditions.
The increase in volume of matter that occurs when matter is heated causes an expansion.
This ultimately implies that, when a physical object (matter) is heated for a specific period of time, it result in an increase in the volume of the object; this phenomenon is generally referred to as expansion.
On the other hand, a decrease in volume of a physical object (matter) as a result of heat is known as contraction.
A man is pulling on his dog with a force of 34.7 N directed at an angle of 24.4° to the horizontal. Find the x component of this force.
Answer:
[tex]31.7\:\mathrm{N}[/tex]
Explanation:
We can use basic trig in a right triangle to solve this problem. Let the x component of the force be [tex]x[/tex]. We have the following equation:
[tex]\cos 24^{\circ}=\frac{x}{34.7},\\x=34.7\cos 24^{\circ}\approx \boxed{31.7}[/tex]
A fiber-optic rod consists of a central strand of material surrounded by an outer coating. the interior portion of the rod has an index of refraction of 1.55. if all rays striking the interior walls of the rod with incident angles greater than 59.5° are subject to total internal reflection, what is the index of refraction of the coating?
Answer:
the index of refraction of the coating is 1.33
Explanation:
Given the data in the question;
refraction index of interior portion of the rod η[tex]_{interior[/tex] = 1.55
angle of incidence θ[tex]_i[/tex] = 59.5°
From Snell's law, we know that;
η[tex]_{interior[/tex] × sinθ[tex]_i[/tex] = η[tex]_{coating[/tex] × sinθ[tex]_r[/tex]
where η[tex]_{interior[/tex] is the index of refraction of the rod ( material 1 )
θ[tex]_i[/tex] is the angle of incidence
η[tex]_{coating[/tex] is the index of refraction in outer coating ( material 2 )
θ[tex]_r[/tex] is the angle of refraction
so we substitute our values into the equation;
η[tex]_{interior[/tex] × sinθ[tex]_i[/tex] = η[tex]_{coating[/tex] × sinθ[tex]_r[/tex]
1.55 × sin( 59.5° ) = η[tex]_{coating[/tex] × sin( 90° )
1.55 × 0.861629 = η[tex]_{coating[/tex] × 1
1.3355 = η[tex]_{coating[/tex] × 1
η[tex]_{coating[/tex] = 1.33 { 2 decimal places }
Therefore, the index of refraction of the coating is 1.33
Which one of the following properties apply to both waves and particles?
A) Photoelectric Effect
B) Diffraction
C) Refraction
Answer:
b
Explanation:
sorry if im wrong
How do humans depend on geochemical cycles?
A. to provide clean water, breathable air, and soil that is capable of supporting crops.
B. to provide food and oxygen so organisms can survive
C. to help conserve resources for future use
Answer:
A
Explanation:
Because we need clean water to obtain a healthy diet, need oxygen which plants provide through photosynthesis and soil is important for food.
How much power is needed to do 700 Joules of work in 100
seconds?
Answer:
icon just off 7 power iconoclasts officially
A student pushed against a rock to try and move it. The student pushed really hard using a force of 2 N. however the rock would not move How much work
was done
Multiple choice-
-2N
-3N
-No work was done
Answer:
no work was done.
Explanation:
just because you put effort into something doesn't mean it pays off.
because the displacement was 0, the work is 0 too.
The flow of electric current through a gas without any external influence (ionizer) is called
Answer:
self-maintained discharge
Explanation:
A stun gun or TASER is designed to put out a few seconds worth of electric pulses that impress a
voltage of about 1200 V across the human body. This results in an average current of approximately 3
mA into a human body. Using these figures, estimate the resistance of the human body.
Answer:
Resistance = 400000 Ohms
Explanation:
Given the following data;
Voltage = 1200 V
Current = 3 mA = 3/1000 = 0.003 A
To find the resistance;
Voltage = current * resistance
Resistance = 1200/0.003
Resistance = 400000 Ohms
Not a question, but I need help on the last two questions I posted, preferably no links, please...
Answer:
ok...
Explanation:
Answer:
ive gotten links for answers that really looked like a virus
Explanation:
A force of unknown magnitude is applied to push a 115kg bobsled down a flat, frictionless surface with an acceleration of 7.8 m/s2. What is the net force on the sled?
Answer:
Explanation:
Since we have no friction and we also have no angle of inclination, this is a straightfoward force problem, where
F = ma
Filling in,
F = (115)(7.8) so
F = 9.0 × 10¹ N
device based on atmospheric pressure
A barometer is a scientific instrument used to measure atmospheric pressure, also called barometric pressure. The atmosphere is the layers of air wrapped around the Earth. That air has a weight and presses against everything it touches as gravity pulls it to Earth. Barometers measure this pressure.
List four functions of the skeletal system.
The major functions of the bones are body support, facilitation of movement, protection of internal organs, storage of minerals and fat, and hematopoiesis.
Explanation:
It protects your organs
allows movement
gives the body shape
it store minerals
The chart shows data for a moving object. A 2-column table with 3 rows. Column 1 is labeled time in seconds with entries 2, 4, 6. Column 2 is labeled velocity in meters per second with entries 8, 8, 8. Which conclusion is best supported by the information in the chart?
The object has negative displacement.
The object has negative acceleration.
The object does not have displacement.
The object is not accelerating.
Answer:
The Object Is Not Accelerating.
Explanation: Just Got It Correct
I have a bottle of gas, the bottle can expand and contract. Initially the gas is at 1 kpa of pressure and a volume of 1 Liter, at a temperature of 290 K. Then the Temperature went to 390 K and the volume of 1.1 Liter. What is the New Pressure? Please help I have been asking this for weeks
Answer:
P₂ = 1.22 kPa
Explanation:
This problem can be solved using the equation of state:
[tex]\frac{P_1V_1}{T_1} =\frac{P_2V_2}{T_2}[/tex]
where,
P₁ = initial pressure = 1 KPa
P₂ = final pressure = ?
V₁ = initial Volume = 1 liter
V₂ = final volume = 1.1 liter
T₁ = initial temperature = 290 k
T₂ = final temperature = 390 k
Therefore,
[tex]\frac{(1\ kPa)(1\ liter)}{290\ k} =\frac{(P_2)(1.1\ liter)}{390\ k}\\\\P_2= \frac{(1\ kPa)(1\ liter)(390\ k)}{(290\ k)(1.1\ liter)}[/tex]
P₂ = 1.22 kPa
Point A is 2.50 m from a +3.73*10^-8 C charge, and Point B is 1.00 m from the charge. What is the potential difference when you go from point A to point B? Include the correct sign, + or - (Hint: Does V go up or down when you go from A to B?) (Unit = V)
Answer:
-201
Explanation:
Got it right on Acellus
Answer:
-201
Explanation:
acellus
What happens to the gravitational force between two objects when the distance between them increases by 3 times?
Answer:
it decrease by 9 times
Explanation:
If the separation distance between any two objects is tripled (increased by a factor of 3), then the force of gravitational attraction is decreased by a factor of 9 (3 raised to the second power).
What is the velocity of a wave with a wavelength of 3.7 m and a frequency of 22.5 Hz?
Answer:
83.25m/s
Explanation:
velocity=frequency×wavelength
V= 22.5×3.7
V=83.25m/s
explain how to find the surface area of a rectangular pyramid
...................
Answer:
So let's first start with the base which is a rectangle remember that the formula to solve the area
Explanation:
Which statement best describes chemical properties of matter?
Answer:
combustibility
Explanation:
generally observe as the identity of a substance change and one or more new substance form
For a total of 8 hours, Erica rode her motorcycle down a freeway at 80 kilometers per hour.
There was a car behind her for one-quarter of that time. How far did Erica ride while the car
was behind her?
In a nuclear power plant, uranium atoms ______
A. Combine and give off heat energy
B. Split and give of heat energy
C. Burn and give of heat energy
D. Split and give off electrons
Answer:
All nuclear power plants use nuclear fission, and most nuclear power plants use uranium atoms. During nuclear fission, a neutron collides with a uranium atom and splits it, releasing a large amount of energy in the form of heat and radiation. More neutrons are also released when a uranium atom splits.
Which use of iron is due to its chemical properties?
