Answer:
compound-complex sentence. two independent clauses, one dependent clause
12. In the last three months mr sharma lost 11\2 kg gained 9\4 kg and then lost 15\4 kg. if he now weigh 95 kg, how much did me sharma weigh to begin with ?
(a)100 kg (b)102kg
(c) 106.5. (d) 104kg
Answer:
(b) 102 kg
Explanation:
95 +15/4- 9/4+11/2 = 102 kg
Johann squeezes a bagel too hard at the supermarket, and it does not return to its original shape when he removes his hand. The bagel has been __________ deformed. What word completes the sentence to show that the bagel has been permanently changed?
Answer:
permanent set
.............
Johann squeezes a bagel too hard that it is not able to return to its original shape. The bagel has Plastic deformation.
What is Plastic Deformation?Plasticity, also referred to as plastic deformation, is the property of a solid material to undergo permanent deformation, a non-reversible change in shape in response to applied forces.
It is a concept used in physics and materials science. For instance, plasticity is demonstrated when a solid piece of metal is bent or pounded into a new shape because the material itself undergoes lasting modifications. Engineering professionals use the term yield to describe the change from elastic to plastic behavior.
Most materials, especially metals, soils, rocks, concrete, and foams, show signs of plastic deformation.
To get more information about Plastic deformation :
https://brainly.com/question/12975550
#SPJ2
State two units bigger than kilogram and how are they related to kilogram
Answer:
quintal and metric tone.
Explanation:
1 quintal= 100kg
1 metric =1000kg
quintal measures mass of cars, trucks etc, but metric measures bigger things like cargo ships
hope it helps
Hi I need help my home work says can you change use the sun energy to produce the food in this sandwich the cheese came out from the milk I'm a cow that a crash that took energy from the sun for explain fill in the other chain
Answer: Food chain: cheese a product of the sun.
Explanation:
Food chain: The energy taken from the sun through photosynthesis enables plants to exist and grow.
The animal like cow takes chemical energy from plants by eating plants product.
The cow is able to produce the milk because of the energy that has been taken from the plant.
Since the cheese came out from the milk, we can therefore conclude that the food is initially a product of the sun.
How can different objects interact when they are not even touching?
Answer: Magnetic and gravitational force
Explanation: When a magnet and an iron nail are kept at a distance,the magnet attracts the nail without touching using magnetic force. In this example, the magnet and the nail are interacting.
The earth pulls the moon towards it and keeps it in orbit without touching it, using gravitational force. In this example,the moon and the earth are interacting.
PLEASE RATE 5 STARS AND VOTE AS BRAINLIEST:)
(^o^)(^o^)(^o^)(^o^)(^o^)(^o^)(^o^)(^o^)(^o^)(^o^)(^o^)(^o^)
When Jane drives to work, she always places her purse on the passenger’s seat. By the time she gets to work, her purse has fallen on the floor in front of the passenger seat. One day, she asks you to explain why this happens in terms of physics. What do you say?
Answer:
the vibrations push the purse up and down very fast and gravity pushes the purse down onto the floor
Explanation: does that help
Answer:
Newton's 1st Law
Explanation:
When Jane is driving her purse is being pushed against the seat so when she stops driving it slides forward because of it's mass. So that is why it ends up on the floor.
An electron in a mercury atom jumps from level a to level g by absorbing a single
photon. Determine the energy of the photon in joules.
Answer:
7.39ev
Explanation:
Energy levels are found inside the atom. Electrons occupy these energy levels depending on the energy they possess. Electrons can move from one energy level to another due to absorption or emission of a photon or other factors. As the electron, jumps from a higher energy level to a lower energy level emitting a photon of measurable frequency, the photon carries energy equal to the amount of energy between the gap of the levels. This idea was first proposed by Neils Bohr and became the forerunner of the wave mechanical model of the atom.
Hence the energy of a photon is the energy of the gap between the two energy levels. Since Ea= 2.48ev and Eg= 10.38 ev.
If an electron jumps from Ea to Eg, the energy of the photon absorbed is given by;
E=Eg-Ea
E= 10.38ev - 2.48ev
E= 7.39ev
Oque ocorre com a velocidade se diminuímos o tempo, mantendo a distância constante? E se aumentarmos o tempo? Que tipo de grandeza sao tempo e velocidade?
Which of the following best describes the circuit shown below?
A. Parallel
B. Open
C. Series
D. Short
Answer:
short circuit
Explanation:
the current will not pass through the lamp, but it will go through the small wire (less resistance than the lamp)
please help..!
How many photons does it emit in 1 sec. Lamp with a power of 90 W, if it emits monochromatic light with
wavelength 600 nm?
Answer:
idk ha ha ha
Explanation:
Select the correct answer.
Why does ice float on water?
A.
The temperature of ice is lower than the temperature of water.
B.
The temperature of water and ice are the same.
C.
The density of ice is less than the density of water.
D.
The density of ice is greater than the density of water.
Answer:
C.
The density of ice is less than the density of water.
The ice float on water because the density of ice is less than the density of water.
What is Density?The density of a material describes how dense it is in a given area. A substance's density is determined by its mass per unit volume. Density is essentially a measure of how tightly something is packed.
It is a particular physical quality of a specific thing. Discovering the density principle was done by the Greek scientist Archimedes. If you are familiar with the formula and the required units, calculating density is simple. Alternatively to the symbol, the letter D can be used to denote density.
ρ=m/v where,
ρ is the density,
m= mass of object and,
v is the volume of the object.
Hence, the density of ice is 917 kg/m³, which is less than the density of water which is 997.7 kg/m³ and due to this reason the ice floats on water.
To get more information about density :
https://brainly.com/question/15164682
#SPJ2
(b) The speed of the vehicle is written as 90 km/h. State the speed in SI unit. Show your working in the space below.
Answer:
Explanation:I don't say you to mark my ans as brainliest but if it has really helped you plz don't forget to thank me...
Answer:
90 km/h = 25 m/ s
Explanation:
to understand
1 km = 1000 m
1 h = 60 minutes and since 1 minute = 60 s you can see that 1 h = 60 * 60 s
90 km / h = 90 1000m / 3600 s
90 *1 / 3.6
90/ 3.6
25 m/ s
so 90 km/h = 25 m/ s
(by the way 90 m/s = 3.6 * 90 = 324 km/ h )
The breaking car had 10,000 J of kinetic energy before breaking after breaking it had 2000 J of kinetic energy. How much thermal energy did the brakes gain?
Answer:
8000J
Explanation:
The kinetic energy of the car lost during breaking are converted to thermal energy and are gained by the brakes.
Kinetic energy loss by car = thermal energy gained by brakes.
∆K.E = ∆T.E ....1
The Kinetic energy loss by car can be expressed as;
∆K.E = K.E1 - K.E2
Initial K.E = K.E1 = 10000J
Final K.E = K.E2 = 2000J
∆K.E= 10000J - 2000J = 8000J
From equation 1,
∆K.E = ∆T.E
∆T.E = 8,000J
thermal energy gain by brakes = 8,000J
A plane starting from rest accelerates to 40 m/s in 10 s. How far did the plane travel during this time?
PLEASE ANSWER FAST!! Thankew <3
Answer:
400 meters
Explanation:
using the equation:
speed = distance/timeit would look like this when plugged in: 40=d/10d (distance) is the unknown variable, so you have to solve for thatmultiply both sides by 10 since you want to separate d to solve its number. 10d/10=40 × 10the two tens on the d part of the equation would cancel out, leaving only d. Therefore, d = 400Hopefully this helps.
How are clouds made. plz halp
Answer:
A cloud is made up of liquid water droplets. A cloud forms when air is heated by the sun. As it rises, it slowly cools it reaches the saturation point and water condenses, forming a cloud. As long as the cloud and the air that its made of is warmer than the outside air around it, it floats!
Explanation:
A cloud is made up op liquid and water droplets.
Answer:
How are clouds made
Explanation:
When sunlight hits water it evaporates into the air and makes water droplets that we see as white fluufly clouds
Sports managers have the potential to earn more than a million dollars per year.
True
false
Answer:
true
Explanation:
hope this helped!
Answer:
true :)
Explanation:
Un objeto de 1400 g de masa se mueve bajo la acción de una fuerza constante con una aceleración de 0,5 m/s2 , sobre una superficie horizontal sin rozamiento. Suponiendo que el objeto partió del reposo. Calcula el valor de la fuerza y la velocidad cuando han transcurrido 10 s.
Answer:
if you spoke this in english i can help you out
Explanation:
A simple hydraulic lift is made by fitting a piston attached to a handle into a 3.0-cm diameter cylinder. The cylinder is connected to a larger cylinder with a 24-cm diameter. If a 50-kg woman puts all her weight on the handle of the smaller piston, what weight could the other piston lift?
Answer:
Approximately [tex]3.1 \times 10^4 \; \rm N[/tex] (assuming that the acceleration due to gravity is [tex]g = 9.81\; \rm kg \cdot N^{-1}[/tex].)
Explanation:
Let [tex]A_1[/tex] denote the first piston's contact area with the fluid. Let [tex]A_2[/tex] denote the second piston's contact area with the fluid.
Similarly, let [tex]F_1[/tex] and [tex]F_2[/tex] denote the size of the force on the two pistons. Since the person is placing all her weight on the first piston:
[tex]F_1 = W = m \cdot g = 50\; \rm kg \times 9.81 \; \rm kg \cdot N^{-1} =495\; \rm N[/tex].
Since both pistons fit into cylinders, the two contact surfaces must be circles. Keep in mind that the area of a square is equal to [tex]\pi[/tex] times its radius, squared:
[tex]\displaystyle A_1 = \pi \times \left(\frac{1}{2} \times 3.0\right)^2 = 2.25\, \pi\;\rm cm^{2}[/tex].[tex]\displaystyle A_2 = \pi \times \left(\frac{1}{2} \times 24\right)^2 = 144\, \pi\;\rm cm^{2}[/tex].By Pascal's Law, the pressure on the two pistons should be the same. Pressure is the size of normal force per unit area:
[tex]\displaystyle P = \frac{F}{A}[/tex].
For the pressures on the two pistons to match:
[tex]\displaystyle \frac{F_1}{A_1} = \frac{F_2}{A_2}[/tex].
[tex]F_1[/tex], [tex]A_1[/tex], and [tex]A_2[/tex] have all been found. The question is asking for [tex]F_2[/tex]. Rearrange this equation to obtain:
[tex]\displaystyle F_2 = \frac{F_1}{A_1} \cdot A_2 = F_1 \cdot \frac{A_2}{A_1}[/tex].
Evaluate this expression to obtain the value of [tex]F_2[/tex], which represents the force on the piston with the larger diameter:
[tex]\begin{aligned}F_2 &= F_1 \cdot \frac{A_2}{A_1} \\ &= 495\; \rm N \times \frac{2.25\, \pi\; \rm cm^2}{144\, \pi \; \rm cm^2} \approx 3.1 \times 10^4\; \rm N\end{aligned}[/tex].
A rabbit sees carrot to his right and starts jumping towards it with a velocity of 4.0meter per sec it speeds up to its maximum velocity of 13 meter per sec with a constant acceleration of 2.0 metre per sec square how long does it take for the rabbit to go from 4.0 metre per sec to 13.0 metre per square
Answer:
4.5 sec
Explanation:
Initial velocity u = 4 m/s
Final velocity v = 13 m/s
Acceleratiin a = 2 m/s^2
Using v = u + at
Where t is time
13 = 4 + 2t
13 - 4 = 2t
9 = 2t
t = 9/2 = 4.5 sec
Answer:
4.5 s
Explanation:
The initial velocity (u) = 4 m/s, the final velocity (v) = 13 m/s and the acceleration (a) = 2 m/s²
To calculate the time it takes the rabbit to go from 4.0 m/s to 13.0 m/s, we use the formula:
v = u + at
Substituting values to get:
13 = 4 + 2t
Subtracting 4 from both sides:
13 - 4 = 4 + 2t - 4
9 = 2t
Therefore, 2t = 9
Dividing through by 2
2t / 2 = 9 / 2
t = 4.5 s
Therefore it takes the rabbit 4.5 seconds to go from 4.0 m/s to 13.0 m/s
liquid can flow but solid cannot give reason
Answer:
well..
Explanation:
Liquid can flow but solid cannot because of differences in their properties
property of liquid which lets it flow:
inter-particular space is largeinter-particular attraction is small these properties tend to make the molecules of liquid free to flowproperty of solid which tends to obstruct flow:
inter-particular space is small and so it's compactinter-molecular attraction is strong hence no tendency to flowHope this helps!
you walk 5 km east then turned and walked 2km west what would your displacement be
Answer:
3km? im a beginner
A skier starting from rest accelerates in a straight line down a 43,000 m slope at 1 m/s. How fast were they moving after 5 s?
Answer:
5m/s
Explanation:
The skier accelerates at 1 m/s, then, the acceleration is:
[tex]a=1\frac{m}{s^2}[/tex]
to find the speed after 5 seconds you use the following formula:
[tex]a=\frac{v-v_o}{t}[/tex]
but vo = 0m/s because the skier is at rest at the beginning.
You do v the subject of the formula:
[tex]v=at=(1\frac{m}{s^2})(5s)=5\frac{m}{s}[/tex]
hence, the velocity is 5m/s
using 15 percent as machine energy efficiency, what is the actual work output if the total work input is 7500 kilojoules?
A. 500 kilojoules
B. 750 kilojoules
C. 1,125 kilojoules
D. 7,500 kilojoules
Answer:
The actual work output is 1,125 kilojoules.
Explanation:
Energy efficiency is defined as the efficient use of energy. An appliance, process, or facility is energy efficient when it consumes less than the average amount of energy to perform an activity. Then, energy efficiency is the ratio between the amount of energy used in an activity and the amount expected to be carried out.
Efficiency is calculated as:
efficiency = output / input
Where output is the amount of mechanical work (in watts) or energy consumed by the process (in joules), and input (input) is the amount of work or energy that is used as input to carry out the process.
In this case:
Efficiency always has a value between 0 and 1. In this case, efficiency=0.15output=?input= 7500 kilojoulesReplacing:
0.15=output/7500 kilojoules
Solving:
Output=0.15* 7500 kilojoules
output=1,125 kilojoules
The actual work output is 1,125 kilojoules.
Information about conservation of energy
Explanation:
Energy conservation is the effort made to reduce the consumption of energy by using less of an energy service. This can be achieved either by using energy more efficiently (using less energy for a constant service) or by reducing the amount of service used (for example, by driving less). Energy conservation is a part of the concept of Eco-sufficiency. Energy conservation reduces the need for energy services and can result in increased environmental quality, national security, personal financial security and higher savings.It is at the top of the sustainable energy hierarchy. It also lowers energy costs by preventing future resource depletion.
Energy can be conserved by reducing wastage and losses, improving efficiency through technological upgrades and improved operation and maintenance. On a global level energy use can also be reduced by the stabilization of population growth.
Energy can only be transformed from one form to other, such as heat energy to motive power in cars, or kinetic energy of water flow to electricity in hydroelectric power plants. However machines are required to transform energy from one form to other. The wear and friction of the components of these machine while running cause losses of very high amounts of energy and very high related costs. It is possible to minimize these losses by adopting green engineering practices to improve life cycle of the components.
Hope this helps u ......Explanation:
The cuboid and the cube below are placed on the floor. The cuboid has a weight of 60N and the cube has a weight of 40N. Which exerts a greater pressure on the ground? Prove your answer.
Answer:
they both exert the same pressure
Explanation:
Pressure is the ratio of force to area. It is given as:
[tex]P=\frac{F}{A}[/tex] , where F is the force, P is pressure and A is area
1) For the cuboid, the area of the base placed on the ground (A) = 8 cm × 3 cm = 24 cm² = 0.0024 m². Therefore the pressure is:
[tex]P=\frac{F}{A}=\frac{60}{0.0024} =25000N/m^2=25KN/m^2[/tex]
2) For the cube, the area of the base placed on the ground (A) = 4 cm × 4 cm = 16 cm² = 0.0016 m². Therefore the pressure is:
[tex]P=\frac{F}{A}=\frac{40}{0.0016} =25000N/m^2=25KN/m^2[/tex]
Therefore, they both exert the same pressure.
what is one basic need that both monkey and a tree have in common
Answer:
water
Explanation:
both a monkey and a tree need water to survive.
Have a great day
In fair weather, the electric field in the air at a particular location immediately above the Earth's surface is 120 N/C directed downward. (a) What is the surface charge density on the ground? Is it positive or negative? (b) Imagine the surface charge density is uniform over the planet. What then is the charge of the whole surface of the Earth? (c) What is the Earth's electric potential due to this charge? (d) What is the difference in potential between the head and the feet of a person 1.75 m tall? (Ignore any charges in the atmosphere.) (e) Imagine the Moon, with 27.3% of the radius of the Earth, had a charge 27.3% as large, with the same sign. Find the electric force the Earth would then exert on the Moon. (f) State how the answer to part (e) compares with the gravitational force the Earth exerts on the Moon.
Answer:
a. 1.062 × 10⁻⁹ C/m² b. 5.472 × 10⁵ C c. 7.685 × 10⁹ V d. -210.12 V e. 4.972 × 10³ N f. F the electric force is much less than the gravitational force F₁ of the earth on the moon.
Explanation:
a. The surface charge density D = ε₀E where E = 120 N/C
D = ε₀E = 8.854 × 10⁻¹² F/m × 120 N/C = 1.062 × 10⁻⁹ C/m²
The charge density is positive since the electric field is positive or directed downwards. Only a positive charge could direct an electric field out of itself.
b. Since the surface charge density is uniform over the planet and charge, Q = DA where A = area of earth = 4πr² where r = radius of earth = 6.4 × 10⁶ m.
So Q = DA
= 1.063 × 10⁻⁹ C/m² × 4π × (6.4 × 10⁶ m)²
= 5.4715 × 10⁵ C
≅ 5.472 × 10⁵ C
c. The earth's electric potential due to this charge Q is V = Q/4πε₀r
= 5.472 × 10⁵ C ÷ (4π × 8.854 × 10⁻¹² F/m × 6.4 × 10⁶ m)
= 5.472 × 10⁵ C ÷ 712.081 × 10⁻⁶ F
= 0.07685 × 10¹¹ V
= 7.685 × 10⁹ V
= 7.685 GV
d. Since V = Q/4πε₀r, and we are going to be dealing with a small change in length compared to r, we differentiate V to get the differential change in potential.
So, dV/dr = -Q/4πε₀r²
dV = -Qdr/4πε₀r² ,dr = 1.75 m
dV = -5.472 × 10⁵ C × 1.75 m ÷ [4π × 8.854 × 10⁻¹² F/m × (6.4 × 10⁶ m)²]
dV = -9.576 × 10⁵ Cm ÷ 4557.318 Fm
dV = -210.124 V
dV ≅ -210.12 V
e. Let Q₁ = charge on moon and Q₂ = charge on earth. Given that Q₁ = 0.273Q₂, the force of attraction between earth and moon is F = Q₁Q₂/4πε₀R² where R = distance between earth and moon = 3.844 × 10⁸ m
F = Q₁Q₂/4πε₀R²
= 0.273Q²/4πε₀R²
= 0.273 × (5.472 × 10⁵ C)²/ [4π × 8.854 × 10⁻¹² F/m × (3.844 × 10⁸ m)²]
= 8.1744 × 10¹⁰ C²/1644.054 Fm × 10⁴
= 0.004972 × 10⁶ N
= 4.972 × 10³ N
= 4.972 kN
f. The gravitational force between earth and moon F₁ = Gm₁m₂/R² where m₁ = mass of moon = 7.3 × 10²² kg and m₂ = mass of earth = 5.97 × 10²⁴ kg.
F₁ = 6.67 × 10⁻¹¹ Nm²/kg² × 5.97 × 10²⁴ kg × 7.3 × 10²² kg/(3.844 × 10⁸ m)²
= 290.685 × 10³⁵ Nm²/14.776 × 10¹⁶ m²
= 19.67 × 10¹⁹ N
= 1.967 × 10²⁰ N
≅ 2 × 10²⁰ N
Since F₁/F = 1.967 × 10²⁰ N/4.972 × 10³ N = 3.95 × 10¹⁶ ≅ 4 × 10¹⁶.
F the electric force is much less than the gravitational force F₁ of the earth on the moon.
Given the word equation below:
sodium + water + sodium hydroxide + hydrogen
What are the reactant(s)?
a
sodium hydroxide and hydrogen
b sodium and water
sodium and sodium hydroxide
d water and hydrogen
Answer:
Sodium and water
Explanation:
We are given with the word equation :
sodium + water + sodium hydroxide + hydrogen
It is required to find that the reactants of the above equation.
In terms of chemical formula we can write it as :
[tex]Na+H_2O\rightarrow NaOH+H_2[/tex]
Reactant of a chemical equation are the elements that are present on its LHS. These are the components of which the equation is composed of. So, the reactants of the given equation are sodium and water.
The reactant are :
-Reactants are Sodium and water.
-Hence, option b is correct.
"Reactants"Word equation :sodium + water + sodium hydroxide + hydrogen
In terms of chemical formula ,we can write it as :
[tex]Na+H_2O\rightarrow NaOH+H_2[/tex
Reactants In a chemical equation, reactants are the elements that are present on its LHS(left hand side).
So, the reactants of the given equation are sodium and water.
Find more information about reactants and products here:
brainly.com/question/18723610
Why does the reading on hydrometer increase towards the bottom?
Answer:
They're calibrated to measure, liquids of greatest density.
Explanation:
In what ways are electromagnetic waves differed from mechanical waves?
A. Electromagnetic waves can only travel through matter.
B. Electromagnetic waves transfer matter through empty space.
C. Electromagnetic waves are longitudinal waves
D. Electromagnetic waves can travel through empty space
Answer:
D. Electromagnetic waves can travel through empty space
Explanation:
After a few Google searches, this answer seems the most correct
Electromagnetic waves differ from mechanical waves by the fact that electromagnetic waves can travel through empty space.
What are electromagnetic waves?The electromagnetic radiation consists of waves made up of electromagnetic field which are capable of propogating through space and carry the radiant electromagnetic energy.
The radiation are composed of electromagnetic waves which are synchronized oscillations of electric and magnetic fields . They are created due to change which is periodic in electric as well as magnetic fields.
In vacuum ,all the electromagnetic waves travel at the same speed that is with the speed of air.The position of an electromagnetic wave in an electromagnetic spectrum is characterized by it's frequency or wavelength.They are emitted by electrically charged particles which undergo acceleration and subsequently interact with other charged particles.
Learn more about electromagnetic waves,here:
https://brainly.com/question/3001269
#SPJ3