Explanation:
Inertia is the measure of the mass of an object. It is the tendency of an object to change the direction of an object.
Momentum is the product of mass and velocity. When an object having mass m moves with a particular velocity it will have momentum.
If the speed of an object is changed from u to v, its momentum can be changed and it can be calculated as :
Δp = m(v-u)
Hence, this is the required solution.
Can someone help me please
Metalloids
Metalloids have properties that are intermediate between metals and non-metals. They have properties that are difficult to characterize.
Physical Properties of Metalloids
State of matter - Solid
Lustre - Metallic lustre
Elasticity - Brittle
Conductivity - Semi-conductive in nature
Chemical Properties of Metalloids
Oxidation - They are capable of forming glasses.
Alloys - When mixed with metals, they form alloys.
Allotropic - Metallic and non-metallic allotropes are formed.
Melting - Few metalloids contract when they are melted.
Compounds - Compounds are formed when they react with halogens.
Common Properties of Metalloids
Metalloids are good semiconductors. The reactivity of metalloids is dependent on the properties of the elements they are reacting with. Electronegativity and ionization energy are between metals and non-metals.Non-Metals
Non-metals are those which lack all the metallic attributes. They are good insulators of heat and electricity. They are mostly gases and sometimes liquid. Some they are even solid at room temperatures like Carbon, sulphur and phosphorus.
Properties of Non metals
Characteristic properties of non-metals are high ionization energies and high electronegativity. Owing to these properties, non-metals usually gain electrons when reacting with other compounds, forming covalent bonds. Among the non-metals, the anionic dopants have a strong influence on the VB. Non-Metal dopants are carbon, nitrogen, fluorine, sulphur and iodine.
General properties of non-metals.
The atoms of non-metals tend to be smaller than those of metals. Several of the other properties of non-metals result from their atomic sizes. Non-metals exhibit very low electrical conductivities. The low or non-existent electrical conductivity is the most important property that distinguishes non-metals from metals. Non-metals have high electronegativities. This means that the atoms of non-metals have a strong tendency to attract more electrons than what they would normally have. Non-metals have high electronegativities. This means that the atoms of non-metals have a strong tendency to hold on to the electrons that already have. In contrast, metals rather easily give up one or more electrons to non-metals, metal therefore easily form positively charged ions, and metals readily conduct electricity. Under normal conditions of temperature and pressure, some non-metals are found as gases, some found as solids and one is found as liquid. In contrast, except mercury, all metals are solids at room temperature. The fact that so many non-metals exist as liquids or gases means that non-metals generally have relatively low melting and boiling points under normal atmospheric conditions. In their solid-state, non-metals tend to be brittle. Therefore, they lack the malleability and ductility exhibited by metals.Physical Properties of Non-Metals
Ductility is the property of the material to be stretched into wires but non-metals are not ductile except for carbon, as carbon fibres find uses in a wide variety of industries including sports and music equipment. Another property characteristic to metals is absent in non-metals called malleability. They can’t be drawn into sheets as they are brittle and break on applying pressure. They are not lustrous as they do not have any shiny appearance. They are not sonorous and do not produce a deep ringing sound when they are hit with another material. They are also bad conductors of heat and electricity except for graphite.How will you classify speed, a scalar or a vector quantity? Explain
Answer:
speed is a scalar quantity
because it has magnitude but not the direction
vector quantity have magnitude as well as direction
hope it helps
A 50 kg trapeze artist falls from a height of 10 m, and has a speed of 14 m/s just before hitting the safety net. How much time is needed in order for them to stop if the maximum amount of force they can withstand is 500N?
Answer:
t = 1.4 s
Explanation:
momentum of the trapeze just before hitting the net = 50 x 14 kg m/s
= 700 kg m/s
final momentum = 0
change in momentum required = 700 - 0 = 700
If F be the maximum force and t be the time of action of force
impulse = force x time = F x t
500 x t
impulse = change in momentum
500 x t = 700
t = 1.4 s .
2. You push a 12.3-kg shopping cart with a force of 10.1 N.
(a) What is the acceleration of the cart?
(b) If the cart starts from rest, how far does it move in 2.50 s?
Plz answer quick
Answer:
Explanation:
The important part about this problem is the acceleration, which you must find by using
F = ma,
where F is the force applied,
m is the mass,
and a is the acceleration.
F = ma
10.1 N = (12.3 kg)a
a = 0.8211 m/s^2
Now use the kinematics equations.
d = vot + (1/2)at^2
where d is the distance moved,
vo is the initial velocity (0),
a is the acceleration,
and t is the time.
d = vot + (1/2)at^2
d = (0 m/s)(2.5 s) + (1/2)(0.8211 m/s^2)(2.5 s)^2
d = 2.57 m
a. The acceleration of the cart, is 0.821 [tex]m/s^2[/tex].
b. The car moved a distance of 30.63 meters starting from rest.
Given the following data:
Mass of shopping cart = 12.3 kgForce = 10.1 NInitial velocity, u = 0 m/s (since the cart is starting from rest). Time, t = 2.50 seconds.a. To find the acceleration of the cart, we would apply Newton's Second Law of Motion:
Mathematically, Newton's Second Law of Motion is given by this formula;
[tex]Acceleration = \frac{Force}{Mass}[/tex]
Substituting the given values, we have;
[tex]Acceleration = \frac{10.1}{12.3}[/tex]
Acceleration = 0.821 [tex]m/s^2[/tex]
Therefore, the acceleration of the cart, is 0.821 [tex]m/s^2[/tex].
b. To find the distance covered by the shopping cart, we would use the second equation of motion.
Mathematically, the second equation of motion is given by the formula;
[tex]S = ut + \frac{1}{2} at^2[/tex]
Where:
S is the distance covered. u is the initial velocity. a is the acceleration. t is the time measured in seconds.Substituting the values into the formula, we have;
[tex]S = 0(2.5) + \frac{1}{2} (9.8)(2.5)^2\\\\S = 0 + 4.9(6.25)[/tex]
Distance, S = 30.63 meters.
Therefore, the car moved a distance of 30.63 meters starting from rest.
Read more: https://brainly.com/question/8898885
What is the smallest particle of an element that still retains of that element
A.compound
B.molecule
C.atom
D.mixture
Answer:
atom
Explanation:
the first guy who gave link this is for you:
we cannot use links in brainly
Thankyou.
Which 2 forces are always opposite from one another
Answer:
Any two forces that are always opposite from one another are :
Explanation:
1. action forces
2. reaction forces
HELP PLEASE!!! I HAVE TO GET THIS IN QUICK!!
What do we call the energy that is transferred to
a substance without the substance's temperature
changing?
Answer:
Latent heat
Latent heat is the heat needed to change a state without a change in temperature.
Explanation:
Hope this helps :D
An object is hit with a force of 25 N and accelerates at a rate of 10 m/s/s. What is the mass of the object?
Answer:
2.5 kg
Explanation:
mass is force divided by acceleration25÷10What are two properties that lead to ElectroMagnetic Interactions? please help this is due very soon!!!
Answer:
Electric charge. A fundamental property that leads to the electromagnetic interactions among particles that make up matter.
Sally accelerates a 250 kg cart at 3 m/s/s. What must be the net force?
What is described as a special class of materials that conduct electric charge better than electrical insulators but not as well as electrical conductors?
magnets
ions
Semiconductors
isotopes
pls help and sorry for the spam
Answer: I think ions I’m not 100% sure if it’s not let me know
Explanation:
The increasing speed of a falling object is caused by
gravity
force
mass
speed
(pick one)
Answer:
gravity
Explanation:
Technically it would be mass or speed because it depends on ow big or small it is, but if you break it down it will be due to gravity as it gets stronger
Net force is also a vector quantity which has both magnitude and direction. Using complete sentences, describe the net force acting upon the object during the course of the elliptical orbit. Comment on both the magnitude and the direction.
Answer:
In this movement, both the magnitude and the direction of the force change
Explanation:
A body that moves in an elliptical path must be subjected to a force that is pointed towards one of the foci, therefore the force is central.
The magnitude of this force must be greater when the two bodies are closer and its directional changes, but it always points to the focus where the body that originates the force is.
In this movement, both the magnitude and the direction of the force change
if a person can jump maximum along distance of 3m ,on the earth how far could be jump on the moon where acceleration due to gravity is 1÷16 of that on the earth
Answer:
The person can jump 48 m on the Moon
Explanation:
The question parameters are;
The maximum long jump distance of a person on Earth, [tex]R_{max}[/tex] = 3 m
The acceleration due to gravity on the Moon = 1 ÷ 16 of that on Earth
The distance the person can jump on the Moon is given as follows;
A person performing a jump across an horizontal distance on Earth (under gravitational force) follows the path of the motion of a projectile
The horizontal range, [tex]R_{max}[/tex], of a projectile motion is found by using the following formula
[tex]R_{max} = \dfrac{u^2}{g}[/tex]
Where;
g = The acceleration due to gravity = 9.8 m/s²
Therefore, we have;
[tex]R_{max} = 3 \, m = \dfrac{u^2}{9.8 \, m/s^2 }[/tex]
u² = 3 m × 9.8 m/s² = 29.4 m²/s²
Therefore, on the Moon, we have;
The acceleration due to gravity on the Moon, [tex]g_{Moon}[/tex] = 1/16 × g
∴ [tex]g_{Moon}[/tex] = 1/16 × g = 1/16 × 9.8 m/s² ≈ 0.6125 m/s²
[tex]R_{max \ Moon} = \dfrac{u^2}{g_{Moon}} = \dfrac{29.4 \ m^2/s^2}{0.6125 \, m/s^2 } \approx 48 \, m[/tex]
The maximum distance the person can jump on the Moon with the same velocity which was used on Earth is [tex]R_{max \ Moon}[/tex] ≈ 48 m
PLEASEEE HELP ASAP!!!!!
Answer:
h = 2.15 m
Explanation:
We can use the third equation of motion here to find out the height from which the cat fell that is the height of the refrigerator.
[tex]2gh = v_{f}^2 - v_{i}^2[/tex]
where,
g = acceleration due to gravity = 9.81 m/s²
h = height of refrigerator = ?
vf = final speed of cat = 6.5 m/s
vi = initial speedof cat vertically = 0 m/s
Therefore,
[tex]2(9.81\ m/s^2)h = (6.5\ m/s)^2 - (0\ m/s)^2\\h = \frac{(6.5\ m/s)^2}{(2)(9.81\ m/s^2)}[/tex]
h = 2.15 m
This force is a pull between all objects. It is the force that gives us weight here on Earth. And, if we throw a rock off of a cliff, it is the force that causes the rock to fall to Earth. What is this force?
Answer:
Gravity.
Explanation:
Gravity is considered to be a universal force of attraction which acts between all objects that has both mass, energy and occupy space. Therefore, it acts in such a way as to bring objects together.
Additionally, the gravity of earth makes it possible for all physical objects to possess weight.
This ultimately implies that, this force is a pull between all objects. It is the force that gives us weight here on Earth. And, if we throw a rock off of a cliff, it is the force that causes the rock to fall to Earth.
A physics teacher is reheating her leftover pizza lunch in the very old teacher breakroom microwave. The microwave is so old that it doesn't even turn the food as it cooks. When the teacher takes her food out and eats it, she discovers that parts of the pizza are scalding hot, while other parts are still very cold. She explains to the students that a microwave works by producing standing waves that result in heating. She asks the students to explain why some parts of the pizza are hot while others are still cold. Below are their responses:
Answer: At the antinodes of a standing wave, the wave is shaking very rapidly, causing those parts of the pizza to get hot. At the nodes, the wave is not shaking much at all, causing those parts of the pizza to stay cold."
Explanation:
antinodes vibrate and are the opposite of nodes which are stationary.
Some parts of the pizza are hot while others are still cold. Because the antinodes of a standing wave shake very quickly, causing the hot spots on the pizza to appear.
What are the differences between nodes and antinodes?The fact that there are locations along the medium that appear to be standing still is a feature of every standing wave pattern.
The term "node" refers to these sites, which are also known as "points of no displacement." Other sites along the medium are subjected to vibrations with substantial positive and negative displacements.
During each vibrational cycle of the standing wave, these are the locations that experience the most displacement. These points are termed "antinodes" because they are the polar opposites of nodes.
The antinodes of a standing wave shake very quickly, causing the hot spots on the pizza to appear. The wave isn't moving very much at the nodes, therefore those areas of the pizza stay cold."
Hence some parts of the pizza are hot while others are still cold.
To learn more about antinodes refer to the link;
https://brainly.com/question/2608876
Compared to Earth's moon, the moons of Mars are
equal in size.
larger in size.
made of different substances.
smaller in size.
Which conclusion about the atom can be drawn from Rutherford’s gold foil experiment?
A.Has a zero oxidation #
B.Has a neutral charge
C.Has a small negative center
D.Has a small positive center
What benefits can you gain as you engage yourself with latin dances?
Answer:
hispanic popularity
Explanation:
:)
An Led Light bulb is rated 14 W. How much energy will the light bulb consume if it is on for 1 hour (3600 seconds)
Answer:
18kW
Explanation:
very LED bulb has a power rating in terms of Watt-hour. It gives the power consumption per hour. For e.g. a 100W light bulb consumes 100W of electricity per hour. If left 'on' for 10 hours, a 100W light bulb costs 1kW and 1 unit of electricity is burned. Because 1 unit = 1 Kw of electricity.
I calculated my electricity consumption in 1 hour with LED Bulb as follows-
LED Bulbs power rating- 15 watt
quantity- 1
No. of hours a day – 12
Wattage in 1 hour – 12(time) x 15(load) x 1(quantity) = 180W = .18kW
So consumption units of power with a LED Bulb consume in 1 hour= .18 Units (because 1 KW = 1 unit)
How is the conservation of renewable resources different from the conservation of nonrenewable resources
Una carga de -10Mc está situada a 20cm delante de otra carga de 5 Mc. Calcular la fuerza electrostática en Newton ejercida por una carga sobre la otra. a).- Representar la Fuerza Electrostática. b).- Calcular la Intensidad de las Fuerzas.
Answer:
a) force between them is attraction, b) F = 1.125 10⁻² N
Explanation:
In this case the electric force is given by Coulomb's law
F =[tex]k \frac{q_1q_2}{r^2}[/tex]
In the exercise they give us the values of the loads
q1 = - 10 mC = -10 10⁻³ C
q2 = 5 mC = 5 10⁻³ C
d = 20 cm = 0.20 m
let's calculate
F = 9 10⁹ [tex]\frac{10 \ 10^{-3} \ 5 \ 10^{-3}}{0.20^2}[/tex]
F = 1.125 10⁻² N
To find the direction of the force we use that charges of the same sign repel each other, as in this case there is a positive and a negative charge, the force between them is attraction
What wave shape occurs if the particles travel parallel to the direction of the wave?
Answer:
Explanation:
Pooh Shiesty, that's my dawg
But Pooh, you know I'm really shiesty
You told all them O.T. ni ggas that you really slide
Tell the truth about your gang, they really dyin'
I got my own fire, don't need security in the club
All that woofin' on the net , I thought you was a thug
They ain't got nowhere to go, I sh0t up everywhere they was
Yeah, you know who took that - from you
Come get it back in blood
Come get it back in blood
identify global climate zones and characteristics of each
research the different time zone around the world, and characteristics of each
what is the bond between Hydrogen and Chlorine?
You drive home from school steadily at 90 km/hr for 145 km.
How long did it take you to get home?
Answer:
90km/hr I think but if it is wrong than sorry
What is the average velocity of atoms in 1.00 mol of neon (a monatomic gas) at 2°C? For m, use 0.0202 kg.
Answer:The average Velocity of the atoms =582.73m/s
Explanation:
Given
Mole of neon gas = 1.00 mol
Temperature = 2°C changing to Kelvin becomes
2°C + 273.15 = 275.15K
Mass = 0.0202 kg
Using the equation that connects the Average kinetic energy with ideal gas equation we have that
Kinetic energy=3/2 nRt
1/2(mv^2) = 3/2 nRt
Where
M = mass,
V = volume.
R = gas constant(8.31 jK-1 mol-1,
t = temperature in Kelvin,
n = number of moles
Putting our known values, we have that
1/2(0.0202 × v^2) = 3/2 (1 × 8.31 × 275.15)
0.0101 v^2 = 3,429.745
v^2 = 3429.745 / 0.0101
v^2 = 339,578.713
v = √339578.713
v = 582.73m/s
The pilot directs the aircraft to fly due north at 600km/h. A side-wind blows at
100km/h towards the east. What will be the aircraft's resultant velocity? (Give both its
speed and direction)
Answer:
678.2 km/h and 80.54° north of east
Explanation:
From the question,
Using pythagoras theorem,
a² = b²+c²..................... Equation 1
Where a = resultant velocity
Given: b = 600 km/h, c = 100 km/h
Substitute these values into equation 1
R² = 600²+100²
R² = 360000+10000
R² = 460000
R = √460000
R = 678.2 km/h.
And the direction is
tanθ = 600/100
tanθ = 6
tanθ = 6
θ = tan⁻¹(6)
θ = 80.54°.
Hence the resultant velocity of the aircraft is 678.2 km/h and 80.54° north of east