Answer:
Strong electrolytes have a better tendency to supply ions to the aqueous solution than weak electrolytes.
Explanation:
which type of light wave has the highest energy? which has the least amount of energy
Answer:
Red has the lowest energy and violet the highest. Beyond red and violet are many other kinds of light our human eyes can't see, much like there are sounds our ears can't hear. On one end of the electromagnetic spectrum are radio waves, which have wavelengths billions of times longer than those of visible light.
Explanation:
How many galaxies do astronomers estimate are in the universe.
Answer:
1 million.
Explanation:
Answer: 100 Billion
Explanation: Scientists believe around 100 Billion Galaxies that exist across the observable universe
PLEASE HELP!!Chemical reactions can be recognized by the presence of heat, light, or gas formation. The ultimate outcome for any chemical reaction is the
A. change from a solid to a liquid.
B. presence of sound.
C. formation of a new chemical substance.
Answer:
C
Explanation:
because it's new chemical substances
What is the efficiency of engine that exhausts 463J of heat in a process of doing 350 J of work?
If water is at 500 C, what would
its state of matter be? How do you know?
Answer:
gas
Explanation:
because water become gas when above 100 celcius
Answer:
Gaseous (vapor) state
Explanation:
Because the boiling point of water is 100 C, then anything above that temperature would mean it remains in the vapor state.
How do seatbelts relate to the first law of motion.
Answer: Seatbelts relate to Newton's first law of motion because in the case of a car accident, someone in the car would continue forward until they hit somethng else. A seat belt will help prevent this because it will push back on you (action-reaction force).
Explanation:
A 2. 7-cm-diameter parallel-plate capacitor has a 1. 8 mm spacing. The electric field strength inside the capacitor is 1. 2×105 v/m.
Would a larger balloon float better or worse than a smaller balloon?
(We are doing a project on making a hot air balloon out of tissue paper).
Answer:
The bigger balloon will have a larger area and would experience a greater buoyant force exerted on it which would make it even lighter than a smaller balloon and will have higher payload capacity than a smaller one.
What kind of electromagnetic waves are used by an FM radio?.
Answer:
electromagnetic radiation
What would a wave with a low amplitude sound like?.
If you could hear it at all, it would sound very soft.
How does temperature affect the speed with which the solute dissolves?
Answer:
molecules at higher teperature have higher speed & energy.
Explanation:
the higher they are the more it effects
Carbon dioxide is an example of a molecule where the component atoms of carbon and oxygen are held together by chemical bonds. Which statement correctly describes the reason for these chemical bonds?
A) The structure of atoms increases their atomic energy, which creates the bonds.
B) The combination of chemical energy stored in each atom makes the bonds strong.
C) The nuclei and electrons of the atoms are attracted to each other.
D) The strong nuclear energy bonds the atoms together.
Answer:
C) The nuclei and electrons of the atoms are attracted to each other.
1.A student is pushing a 30 kg
desk across a floor at a
constant speed of 1 m/s. How
much work, tothe nearest whole joule, mustthe student do on the desk to change the speed to 6 m/s?
2. A 5 kg stone falls from the
top of a cliff and strikes the
ground at a speed of 88.5 m/s.
What is
the height of the cliff?
Answer:
A student is pushing a = 35 kg desk across a floor at a constant speed of 1 = 4 m/s. How
much work, to the nearest whole joule, must the student do on the desk to change the speed to
2 = 6 m/s?
Solution:
Work done = change of energy
=
2
2
2
−
1
2
2
=
35 × 36
2
−
35 × 16
2
= 630 − 280 = 350 J
Answer = 350 J
pls give me brainlieste
A book weighs 16 n and placed on a shelf that is 2. 5 m from the ground. What is the gravitational potential energy of the book
Answer: 40J
Explanation:
Gravitational potential energy is defined as the mass of the object, multiplied by the acceleration due to gravity, and the height from your arbitrary reference point. If we assume that the floor has a gravitational potential of zero, then the gravitational potential of the book on the shelf would be:
[tex]U=mgh[/tex]
We were given the weight of the book, not the mass. In order to find the mass of the book, we need to divide the weight by the acceleration of gravity. We have that:
[tex]Mass=Weight/Gravity[/tex]
[tex]Mass=16N/9.8m/s^2[/tex]
[tex]Mass=1.63kg[/tex]
Plug everything into the gravitational potential formula to get:
[tex]U=(1.63kg)*(9.8m/s^2)*(2.5m)[/tex]
[tex]U=40J[/tex]
The gravitational potential energy of the book placed 2.5 m above from the ground is 40 joules.
What is potential energy?The energy of the body due to its position with reference to some other body is called the potential energy of the two - body system.
Given is an object whose weight is 16 N placed on a shelf that is 2.5 m from the ground.
The weight of the book is -
W = mg = 16 N
The gravitational potential energy of the book will be -
E = mgh = 16 x 2.5 = 40 joules
Therefore, the gravitational potential energy of the book placed 2.5 m above from the ground is 40 joules.
To solve more questions on gravitational potential energy, visit the link below-
brainly.com/question/13438575
#SPJ2
please answer!
this is for my homework its due soon.
1) wavelength is 2
6m is 3 wavelengths so 6 = 3.. to find for one wavelength divide both sides by 3
6 = 3
2(m) = 1(wavelength)
2) amplitude is half of what they've given
2/2 = 1m
3) f = 1/t
time period = 1.5s for 3 wavelengths
time period for one wavelength is 1.5/3 = 0/5
so f = 1/0.5 = 2 Hz
If a box is pulled with a force of 100 N at an angle of 25
degrees, then what are the X and Y components of the force?
The X and Y components of the force are 90.63 Newton and 42.26 Newton respectively.
Given the following data:
Force = 100 Newton.Angle of inclination = 25°To determine the X and Y components of the force:
The horizontal component (X) of a force:Mathematically, the horizontal component of a force is given by this formula:
[tex]F_x = Fcos \theta\\\\F_x =100 \times cos25\\\\F_x =100 \times 0.9063[/tex]
Fx = 90.63 Newton.
The vertical component (Y) of tensional force:Mathematically, the vertical component of a force is given by this formula:
[tex]F_y = Fsin \theta\\\\F_y =100 \times sin25\\\\F_y =100 \times 0.4226[/tex]
Fy = 42.26 Newton.
Read more on horizontal component here: brainly.com/question/4080400
If a balloon is heated, what happens to the pressure of the air inside the balloon if the volume remains constant?.
Answer:
P V = N R T is the ideal gas equation
P2 / P1 = T2 / T1
The pressure will increase.
can u pls help me i
Answer:
I believe it's the Supreme Court issued a decision making segregation on buses illegal
How to determine the position of the center of mass.
Answer:
The center of mass can be calculated by taking the masses you are trying to find the center of mass between and multiplying them by their positions
Can the Earth block the Sun;s light from the Moon, or cast a shadow?
(This is a Science question)
Answer:
Sometimes Earth moves between the sun and the moon. When this happens, Earth blocks the sunlight that normally is reflected by the moon. (This sunlight is what causes the moon to shine.) Instead of light hitting the moon's surface, Earth's shadow falls on it.
Explanation:
I Just Know
Which transformation will map figure L onto figure L'? (1 point) Two congruent triangles Figure L and Figure L prime are drawn on a coordinate grid. Figure L has vertices at negative 4, 2, neg
a Horizontal translation of 8 units
b Horizontal translation of 6 units
c Reflection across x-axis
d Reflection across y-axis
Answer:
Horizontal translation of six units
Explanation:
What is the relationship between resistance and current.
Answer:
They are inversely proportional with each other. [tex]R[/tex] ∝ [tex]\frac{1}{I}[/tex]
Explanation:
By the equation V=IR, assume V is constant.
Since I and R are on the same side,
if I increase, R decreases, or the vice versa.
An airplane flies 6.0 km [N] and then 11 km [W]. To return to its starting point, what displacement is needed?
The displacement needed by the airplane to return to its starting point is 12.53 km.
DisplacementFrom the question, we are to determine the displacement
Using the diagram attached, D is displacement
Using the Pythagorean theorem,
D² = 11² + 6²
D² = 121 + 36
D² = 157
D = √157
D = 12.53 km
Hence, the displacement needed by the airplane to return to its starting point is 12.53 km.
Learn more on Displacement here: https://brainly.com/question/13149055
Find attached an illustrative diagram
Need help on this question asap pleasee
Answer:
My aunt died and I am felling down today
A simple pendulum is used to determine the acceleration due to gravity at the surface of a planet. The pendulum has a length of 2 m and its period is measured to be 2 s. The value of g obtained in this investigation is most nearly:.
Answer:
- pendulum use to determine acceleration
Explanation:
by calculating need to understand first the problem
the length is measure to be 2s
the lenght is also 2
2 obtainer on invistigation the most nearly is 8.
Pls answer this ,today is last day of classes then I got finals soon lol
Answer and Explanation:
The law of conversation of energy states that energy cannot be created or destroyed. The pendulum slows down and stops eventually not because the kinetic energy is destroyed, but it is transferred into sound and heat energy instead because there is air resistance and friction.
Kinetic energy => Gravitational potential energy (Loop but some energy transferring to heat and sound each time)
A 10 Newton effort force is required to lift a 10 kg box just off the ground. What is the effort required to lift the box off the ground using a 3m long lever? [The fulcrum is placed 0. 5m from the box. ].
Answer:
2.0 N is the answer
Explanation:
Hope this helps ;D
What is the force of repulsion between two points positive charges 5 and 8 separated at a distance of 0.02m apart
Explanation:
F =(frac{1}{4{pi}{varepsilon}_o}) x (frac {q_1q_2}{r^2})
F =(frac {5 {times} 10 {times} 8 {times} 10}{0.002 {times} 0.002}) x 9 x 10
F = 900N
What are the units for specific charge?
A. C/kg
B. C*kg
C. kg/C
D. 1/C*kg
Answer:
Option A
Explanation:
Your answer is the first option or "C/kg." C/kg is a ratio for specific charge. C for the charge of the electron, kg for the mass of the electron. To find the specific charge we divide the two, which usually involves scientific notations and simplifying.
Example:
[tex]\frac{C}{kg}[/tex]
[tex]\frac{3.4\times10^3C}{2.7\times10^5kg}[/tex]
Hope this helps.
How could you increase the sliding friction between the sled and track? How could you decrease it?
Answer:
You could put sheet metal lining the bottom or something similar to that
Explanation:
Explanation:
If the normal force is the weight of objects you are sliding across the floor, adding or subtracting weight will increase or decrease the sliding friction. But also, if you are pulling an object with a rope, pulling at an upward angle will reduce the normal force.