Answer:
Explanation:
Wattage = E * I
E = 240
I = 0.24
Wattage = 240 * 0.24
Wattage = 57.6
what is pulley? How does it help in lifting weight?
Hey there!
A pulley is a "system" that has a rope attached to carry heavy materials off the ground. Once you pull the rope, the heavy item will be carried.
Hope this helps!
Have a great day!
When is the pressure of the man on the ground more – lying position or standing position? Explain.
The man on the ground in standing position has more pressure. This is because when he stands, only his legs are in contact with the ground. While lying, his body is more in contact with the ground, therefore, he exerts less pressure.
To the point, a manin standing position on the ground had more pressure.
More is the area of contact, less is the pressure efforted.
Thank you...
Which two elements in the list would bond together based on their ionic charges? (30 points) potassium and iodine potassium and iodine potassium and neon potassium and neon calcium and neon calcium and neon calcium and potassium
Answer: Ionic bonds usually occur between metal and nonmetal ions.
Explanation:
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!
In your own words, provide two examples of scientific data that scientists use to explain how the Big Bang could
have been the birth of the Universe.
Explanation:
One example of how the big bang could have been the birth of the universe is the expansion of it... (Expand on it) (It says in your own words)
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.)
A sound wave is sent at the bottom of a sea. If the echo is heard after 2 sec- calculate the depth of the sea. The speed of sound in water is 1500 m/s.
Answer:
3000
Explanation:
Basic kinematics (also probably one of the first formulas in your physics textbook):
Velocity=Distance÷Time
Time=2sec
Velocity=1500 m/s
Distance=??
Rearrange the variables to find the last unknown:
Distance=Velocity×Time
=1500×2
=3000 m
write the differences between biomass energy and tidal energy
Answer: Tidal power has potential for future electricity generation.
Explanation: biomass energy-is renewable organic material that comes from plants and animals.
what unit of measurement is used to measure the size of a star
6. What type of stretching would require you to hold a position for a period of time, like doing a split for two minutes and breathing into the pose? h short-term stretching dynamic stretching static-active stretching ballistic stretching
The answer is C: static-active stretching
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
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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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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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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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.
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.
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:
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.
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.
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
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:
What is meant by output work
Answer:
[tex]work \: done \: as \: out \: put \: force \: \\ acts \: through \: the \: out \: put \: \\ distance \\ thank \: you[/tex]
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.
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.
what is inertia? what are the relations between mass and inertia
Answer:
Inertia is the tendency of an object to continue in uniform motion or remain in its state of rest. Mass is a measure of inertia,so the more huge the mass of an object is the more inertia it has.
Inertia is the tendency of an object to resist a change in its motion. Because of inertia, a resting object will remain at rest, and a moving object will keep moving. Objects with greater mass have greater inertia.
34.9x46x809 Please helpp
please mark this answer as brainlist
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
How can radio waves & microwaves communicate over similar distances?
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.
Does the government think about the welfare of its citizens? Justify (Mention any 2 points)
Answer:
Yes government thinks about the welfare of its citizens because:-
1 they are developing new things day by day.
2 they distribute clothes and different things to their citizens