Answer:
approximately 0.00504 kWh
Explanation:
This electrical energy and is measured in kWh.
For 5 minutes and 20 seconds of use, it is 0.06 W x 0.084 h = 0.00504 kWh.
Note: 60W = 0.06kW; 5min 20sec = 0.083(8) ≈ 0.084 hour
Fluorine has 7 valence electrons. Which charge is its ion likely to have?(1 point)
1+
5+
1–
5-
Answer:
1–
Explanation:
The fluorine is the element with biggest electronegativity in the periodic table, so it usually always take an electron and gets charge 1–
The valence electrons that Fluorine possesses is 7. Then, the charge of its ion would most probably be:
C). 1–
Fluorine is the element having F as its symbol and 9 as its atomic number(9 protons).
As we know, valence electrons are the electrons that are available in the surface shell of the atom. This is the reason that such electrons can make bonding with some other atoms as well. Since Fluorine contains 7 valence electrons, it would have a charge of 1– because it will acquire extra electrons to form the bond. Fluorine's valence shell would contain [tex]2s^{2} 2P^{5}[/tex] i.e. 7 valence electrons.Thus, Fluorine is the chemical element that possesses the highest electronegativity i.e. of around 3.98.Learn more about 'chemical elements' here:
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the ice and steam points of a thermometer at 25.2ohms find the corresponding value in degrees centigrade when it read 38.0 ohms
Answer:
No answer available
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An experiment is conducted to determine how the arm length of a pendulum affects its period. The experimental design calls for varying the length of the arm and the mass of the bob.
Which is true about this experiment, based on good experimental design?
Only the arm length should be changed. The mass should remain the same.
Only the mass should be changed. The arm length should remain the same.
The force applied to the mass should be varied for each trial.
The material the arm is made of should be varied for each trial.
Answer:
Option (I)
Explanation:
The independent varible is arm length. Therefore, to eliminate the effect of other factors and make a valid and effective conclusion, only the arm length should be changed, while other factors (mass, force and materials) should remains the same.
Answer: Only the arm length should be changed. The mass should remain the same.
Explanation:
SOMEONE PLEASE HELP!A car starts at rest and accelerates at 4m/s2. How far has it traveled once its velocity reaches 25 m/s
Please find the attached photograph for your answer. Please do comment whether it helped you or not.
Bill and Amy want to ride their bikes from their neighborhood to school which is 14.4 kilometers away. It takes Amy 40 minutes to arrive at school. Bill arrives 20 minutes after Amy. How much faster (in meters/second) is Amy’s average speed for the entire trip?
Answer:
Hey mate....
Explanation:
This is ur answer....
The image attached is the answer....Hope it helps!
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A rock is thrown straight up and reaches a height of 10m
How long was the rock in the air
What is the initial velocity of the rock
Answer:
1.41s,14.14m/s(approx.)
The spirit rover could move across the Martian landscape at a maximum of 2.68 m/mi. How many minutes would it take for it to travel 10.4 m, the length of a typical classroom?
Answer:
Explanation:
Thks for answer
The spirit rover could move across the Martian landscape at a maximum of 2.68 m/mi. It would take 3.88 minutes to travel 10.4 m, the length of a typical classroom
What is speed?The total distance covered by any object per unit of time is known as speed. It depends only on the magnitude of the moving object. The unit of speed is meter/second. The generally considered unit for speed is a meter per second.
In this scenario, a body would move at a speed of 4 meters per second while covering a distance of 2000 meters in 50 seconds.
As given in the problem The spirit rover could move across the Martian landscape at a maximum of 2.68 m/mi.
The speed of the spirit rover = 2.68 m/mi
as we know
speed = distance /time
2.68 m/mi = 10.4 meters/ time in minutes
time in minutes = 10.4/2.68 minutes
= 3.88 minutes
Thus. it would take 3.88 minutes for the spirit rover to travel 10.4 m, the length of a typical classroom
Learn more about speed from here
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47) Which of the following types of energy is the kind that an object gains when it is raised to a higher point on a
hill than when it started?
A)
B)
Kinetic Energy
Chemical Energy
Mechanical Energy
Gravitational Potential Energy
Answer:
kinetic
Explanation:
kinetic energy is powered by motion or gravity the steeper the hill is the faster a ball will roll
A train is moving with the velocity of 10m/s . It attains an acceleration of 4m/s after 5 sec . find the distance covered by train at that time.
write down the symbols of nitrogen and neon?
Answer:
Nitrogen is N, neon is Ne
Answer:
Symbol of Nitrogen is N symbol of Neon Ne.
What is meant by output work
Answer:
[tex]work \: done \: as \: out \: put \: force \: \\ acts \: through \: the \: out \: put \: \\ distance \\ thank \: you[/tex]
Give an example for each of the following, where the force:
a) changes the direction of a moving object.
b) changes the speed of a moving object.
c) changes the shape and size of an object.
d) stops a moving object.
e) moves a stationary object.
Explanation:
A cricket player hitting the ball from opposite direction.A footballer kicking ball with more force.Heating of a plastic bottle.Applying brake of a car.rolling a stopped marble on a table.a). The gravitational forces between the Earth and the Sun bends the Earth's motion along a curving path instead of a straight line.
b). The gravitational forces between the Earth and a falling rock make the rock fall faster and faster.
c). The force of a pressurized stream of hot air makes a balloon get rounder and bigger.
d). The gravitational forces between the Earth and a rock tossed straight up make the rock go slower and slower, and eventually stop. (In the next instant, it starts falling, as described in answer-b.))
e). The acoustic and emotional force of your mother's voice 15 minutes before the school-bus arrives causes you to turn over, sit up, and start putting on your socks.
How is the frictional force produced? please answer my question in simple language..
Explanation:
Frictional force is produced when two different objects are in very close contact and are slided against each other.
It also depends on the roughness of the object i.e, the rougher will be the object the higher friction will be produced and vice-versa.
If a 2kg metal slug is heated with 1275J of energy which raises its temperature 15K, what is the metal's specific heat capacity?
Answer:
42.5J/kgk
Just use the formula
C = Q/m x change in temp
pls guys i have a serious question thats in my brain for a long time.
Find the highest acceleration
best answer = brainlist
The greatest acceleration on the graph is 4 m/s² .
"Acceleration" means how fast velocity is changing.
Changing velocity means changing speed OR direction.
This graph doesn't tell us anything about the direction of motion, so we can only work with speed.
The "greatest" acceleration means the biggest change of speed in the shortest time.
Your picture of the graph is pretty fuzzy, and I'm not sure I can actually read everything correctly.
The y-axis looks like it's velocity, and I THINK the numbers are 0, 20, 40, and 60, in meters per second.
The x-axis looks like time, and I THINK it's marked 0, 10, 20, 30, 40, 50, 60, 70, and 80, in seconds.
Now, each straight piece on the graph shows a change of velocity and a change of time. So the SLOPE of each piece is the acceleration of that piece.
==> On the first piece, from 0 to A, the velocity changes from 0 to 20 m/s, and the time changes from 0 to 20 sec. The slope of that piece is (20 m/s) / (20 sec), so the acceleration is 1 m/s² .
==> On the level piece from A to B, the velocity is 20 m/s. It doesn't change, from 20 to 30 sec. It has no slope, so the acceleration is zero.
==> On the piece from B to C, the velocity rises (60 - 20) = 40 m/s, and the time changes (40 - 30) = 10 sec. The slope is (40 m/s) / (10 sec), so the cceleration on that piece is 4 m/s² .
==> Finally, on the last piece, from C to D, the velocity DROPS from 60 to 0 m/s, during the time from 40 to 80 sec. The change in velocity is -60 m/s, and the change in time is 40 sec. So the slope of the piece, and the acceleration, is (-60 m/s) / (40 sec) = -1.5 m/s² .
The greatest acceleration shown on the graph happens along the line segment from B to C, from 30 to 40 seconds. During that time, the velocity changes from 20 to 60 m/s. That's an acceleration of 4 m/s² .
What is the rotation and axis of the lunar eclipse? Pls summarise in detail and asap
Answer:
The Moon revolves around the Earth and rotates on its axis with the same period. • The combined effect of these two motions means that one side of the Moon always faces the Earth.
34.9x46x809 Please helpp
please mark this answer as brainlist
what unit of measurement is used to measure the size of a star
give in one word answer :
combination of cell in series
Answer:
The combination of cells in which the negative terminal of a first cell is connected with the positive terminal of second cell and the negative terminal of a second cell is connected to the positive terminal of a third cell and so on is known as series combination of cells.
Explanation:
hope this helps to u
Answer:
Battery.
Hope it is helpful....The mass number of an isotope refers
to the
Answer:
sum of protons and neutrons in the nucleus of an atom
Explanation:
Mass number=proton number + neutron number
Answer:
Mass number= protons(atomic number) + neutrons
It is the total number of nucleons present in an element
Two horses are pulling a box in two different directions as shown in the below image. The image shows one 30.0 N force due north and one 30.0 N force due east.
What is the magnitude of the force needed to stop the horses and bring the box into equilibrium? Describe your calculations. Where would you locate the rope to apply the force?
Explanation:
'What is the magnitude of the force needed to stop the horses and bring the box into equilibrium?' ≈42N; according to the vectors rules.
'Where would you locate the rope to apply the force?' - in point D.
PS. zoom out the attached picture.
Which scenario is an example of a physical change?
O Wood is burned in a campfire and is turned into ash and smoke.
O A piece of metal is left in the rain and forms rust.
O Lead is melted into a liquid to form pellets.
O Yeast turns sugar into energy, water, and carbon dioxide gas.
Answer:
its c
Explanation:
potassium, Group 1
calcium, Group 2
iodine, Group 17
neon, Group 18
Which two elements in the list would bond together based on their ionic charges?
(1 point)
potassium and iodine
calcium and potassium
calcium and neon
potassium and neon
Answer:
Potassium and iodine
Explanation: I took the quick check
pls ans fast and i will mark brainlist. pls
Answer:
the thumb
Explanation:
pressure is exerted more by an area of small surface area.
pressure is got by P=Force/Area in contact
on the thumb there is a smaller area in contact. so as the area reduces, the force exertes becomes greater.
34.9x46x809 I need help again
Answer:
1,298,768.6hope that helps uh..☺
Answer:
1298768.6
Explanation:
34.9 x 46 = 1605.4
1605.4 x 809 = 1298768.6
Between which types of elements do ionic bonds occur, and how do electrons act within the bond
o nonmetals and nonmetals, electrons shared
o metals and metals, electrons freely moving
O metals and nonmetals, electrons transferred
nonmetals and metals, electrons shared
Ionic bonds form when a nonmetal and a metal exchange electrons, while covalent bonds form when electrons are shared between two nonmetals. An ionic bond is a type of chemical bond formed through an electrostatic attraction between two oppositely charged ions.
the real answer is
O metals and nonmetals, electrons transferrednonmetals and metals, electrons shared
1000 mm =
covert the following into metres with working
Answer:
1m
Explanation:
The conversion is 1mm = 0.001m. So all we need to do to find how many mm there are in a meter, all we need to do is divide by a 1000;
1000 / 1000 = 1m
Best of Luck!
What is the advantage of SI unit over CGS unit?
ADVANTAGE
PEOPLE USED CERTAIN UNIT OF MEASUREMENT IN THEIR SPECIFIC REGION WHICH IS NOT ACCEPTED BY WORLD IN CGS SYSTEM.CGS UNIT MADE
DIFFICULTY IN TRADE. LATER SI UNIT OF MEASUREMENT HAVE BEEN ADOPTED IN 1960 AD TO BRING THE uniformity IN measurement throughout THE WORLD. SI SYSTEM MADE THE MEASURENT AROUND WORLD MORE EFFECTIVE AND LESS COFUSING THAN CGS UNIT.
0) Which of the following is matter?
a) Dust
b) The moon
c) Stand of hair
d) All of the above
Answer:
All of the above is the answer
hope it helps.
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Answer:
option d.
d) All of the above .
At what condition do a coin and a feather fall together? What is the acceleration of the coin and feather at that instant? Justify your answer.
Answer:
If a coin and a feather are dropped from the same height at the same time on the moon’s surface, they fall together. Ans: It is because Gravity of the moon is six times less than that of the earth, therefore coin and a feather are fall together.