Plzz help me fast
(There is both physics and chemistry question )
1) Write the molecular formula of the following by crisscross method :
1. Potassium sulphate
2. Sodium chloride
3. Ammonium chloride
4. Silver oxide
2) Prove that F=ma pl
Answers
Potassium Sulphate :-
\(\setlength{\unitlength}{1cm}\begin{picture}(0,0)\thicklines\put(0,3){\bf K}\put(0,0){\bf 1}\put(4,3){\sf SO_4}\put(4,0){\bf -2}\put(0.2,2.9){\vector(4,-3){3.5}}\put(3.8,2.9){\vector(-4,-3){3.5}}\end{picture}\)
\(\boxed{\sf K_2SO_4}\)
Sodium chloride:-
\(\setlength{\unitlength}{1cm}\begin{picture}(0,0)\thicklines\put(0,3){\bf Na}\put(0,0){\bf 1}\put(4,3){\sf Cl}\put(4,0){\bf -1}\put(0.2,2.9){\vector(4,-3){3.5}}\put(3.8,2.9){\vector(-4,-3){3.5}}\end{picture}\)
\(\boxed{\sf NaCl}\)
Ammonium Chloride
\(\setlength{\unitlength}{1cm}\begin{picture}(0,0)\thicklines\put(0,3){\bf NH_4}\put(0,0){\bf 1}\put(4,3){\sf Cl}\put(4,0){\bf -1}\put(0.2,2.9){\vector(4,-3){3.5}}\put(3.8,2.9){\vector(-4,-3){3.5}}\end{picture}\)
\(\boxed{\sf NH_4Cl}\)
Silver Oxide
\(\setlength{\unitlength}{1cm}\begin{picture}(0,0)\thicklines\put(0,3){\bf Ag}\put(0,0){\bf 1}\put(4,3){\sf O}\put(4,0){\bf -2}\put(0.2,2.9){\vector(4,-3){3.5}}\put(3.8,2.9){\vector(-4,-3){3.5}}\end{picture}\)
\(\boxed{\sf Ag_2O}\)
Related Questions
a solenoid with 400 turns has a radius of 0.040 m and is 40 cm long. if this solenoid carries a current of 12 a, what is the magnitude of the magnetic field at the center of the solenoid? select one: a. 15 mt b. 9.0 mt c. 16 mt d. 4.9 mt e. 6.0 mt
Answers
The magnetic field at the center of the solenoid is 15 mT
We are required to calculate the magnetic field at the center of the solenoid.
Number of turns in solenoid, N = 400
Radius of solenoid, r = 0.040 m
Length of solenoid, l = 40 cm = 0.4 m
Current passing through solenoid, I = 12 A
Magnetic field at the center of the solenoid can be calculated using the following formula: B = μ_0 n I
μ_0 is the magnetic permeability of free space which is equal to 4π × 10⁻⁷ Tm/A.
N is the number of turns per unit length of the solenoid.
n = N/l Where N is the total number of turns in the solenoid and l is the length of the solenoid.
Substituting the given values in the above formula: B = (4π × 10⁻⁷ Tm/A) × (N/l) × I
We know that l = 0.4 m and N = 400Therefore, n = N/l = 400/0.4 = 1000 turns/m
Now, substituting the values of N, l, n and I in the above formula we get:
B = (4π × 10⁻⁷ Tm/A) × (1000 turns/m) × (12 A) = 0.015 T = 15 mT
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a loop of wire carries a conventional current of 0.4 amperes. the radius of the loop is 0.07 m. calculate the magnitude of the magnetic field at a distance of 0.34 m along the axis of the loop, from the center of the loop.
Answers
The magnitude of the magnetic field is 0.082 T
What is magnetic field?A magnetic field is a vector field that represents the effect of magnetism on moving charges, currents, and magnetic bodies. A charge moving in a magnetic field experiences a force perpendicular to its velocity and magnetic field.
A magnetic field is created by a current flowing through a circular coil of wire. Every small part of the live wire contributes to the magnetic field lines. At the center of a circular wire, the field lines are straight and perpendicular to the plane of the coil.
Given:
Current in the wire (I) = 0.4 A
Radius of loop (r) = 0.07 m
Distance of the point of consideration (L) = 0.34 m
The magnetic field (B) at distance (L) due to a current (I) flowing in a wire of radius (r) is given as:
B = (N×r×I) / L
Where, N = Number of loops
So,
B = (1 × 0.07 × 0.4)/0.34
B = 0.082 T
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why does Mercury have the smallest orbital time compared to other planets?
Answers
Answer:
because of its nearness to the sun. it has the shortest year and receives the most intense solar radiation of all the planets.
Which of the following would be a homogeneous mixture?
a sand and water
b sour milk
c iron
d air
Answers
Michael is trying to move his desk from one from side of his room to the other. Unfortunately, the desk doesn't actually move. Considering the equation W=Fs, What has not been done by Michael ?
Answers
Answer:
Work hasn't been done by Michael because no distance was covered.
Explanation:
Workdone is given by the formula;
\( Workdone = F * s\)
Where;
W is the work done
F represents the force acting on a body.
s represents the distance covered by the body.
Hence, work hasn't been done by Michael because no distance was covered, as the table didn't move at all. Therefore, work done is zero.
As heat is added to a substance, what is the order of phases that it passes through
Answers
Answer:...........................
Explanation:.........................................
how long does it take light traveling from the sun at 3.0 x 10 8 m/s to reach Jupiter. which is about 780 X 10 5 k/m away
Answers
The light travelling from sun to Jupiter in 43.33 minute.
Light can be define as, that it is electromagnetic radiation that can be detected by the human eye.
We are given that,
The distance from sun to Jupiter = d = 780 × 10⁵ km = 7.80 ×10¹¹m
The speed of light from the sun to Jupiter = v = 3.0 × 10⁸m/s
Therefore , to get the value of distance from sun to Jupiter by the equation is given as,
v = x/t
t = x/v
Where, t is the time taken by light from sun to Jupiter and x is the distance and v is shown speed of light from sun to Jupiter.
Then by putting the values in above equation we get,
t = (7.80 ×10¹¹m)/(3.0 × 10⁸m/s)
t = 2.6 ×10³ sec
t = (2.6 ×10³)/60 minutes
t = 43.33minutes
Thus, the light travelling from sun to Jupiter in 43.33minutes.
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Drag each label to the correct location on the table. Sort the sentences based on whether they describe radio waves, visible light waves, or both. They have colors. They can travel in a vacuum. They have energy. They’re used to learn about dust and gas clouds. They’re used to find the temperature of stars. They’re invisible.
Answers
Based on the given sentences, let's sort them into the correct categories: radio waves, visible light waves, or both.
Radio waves:
- They're used to learn about dust and gas clouds.
Visible light waves:
- They have colors.
- They're used to find the temperature of stars.
Both radio waves and visible light waves:
- They can travel in a vacuum.
- They have energy.
- They're invisible.
Sorted table:
| Radio Waves | Visible Light Waves | Both |
|----------------------|----------------------|----------------------|
| They're used to learn about dust and gas clouds. | They have colors. | They can travel in a vacuum. |
| - | They're used to find the temperature of stars. | They have energy. |
| - | - | They're invisible. |
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Two stars are in a binary system. One is known to have a mass of 1.00 solar masses. If the system has an orbital period of 400 years, and a semi-major axis of 1.34E+10 km, what is the mass of the other star?
Answers
The mass of the other star in the binary system is approximately 0.541 solar masses.
To find the mass of the other star in the binary system, we can use Kepler's Third Law of Planetary Motion, which can be applied to binary star systems. The law states that the square of the orbital period (\(T\)) is proportional to the cube of the semi-major axis (\(a\)) of the orbit. Mathematically, this can be expressed as\(\(T^2 = \frac{4\pi^2}{G(M_1 + M_2)}a^3\), where \(M_1\) and \(M_2\)\) are the masses of the stars,\(\(G\)\) is the gravitational constant, and other variables have their usual meanings.
Given that one star has a mass of 1.00 solar masses, we can substitute the known values into the equation and solve for\(\(M_2\)\). Rearranging the equation, we have\(\(M_2 = \frac{4\pi^2}{G}(\frac{a^3}{T^2}) - M_1\)\).
Plugging in the values for\(\(a\) (1.34E+10 km) and \(T\) (400 years)\), and using the appropriate unit conversions, we can calculate the mass of the other star,\(\(M_2\\), to be approximately 0.541 solar masses.
Therefore, the mass of the other star in the binary system is approximately 0.541 solar masses.
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URGENT: Two horizontal forces act on an object on a surface. There is a 20 Newton applied force to the left and a sliding frictional force of 5 Newtons to the right.
What is the net force on the object?
Answers
Answer:
xbzcfhkuvy
Explanation:
dvdvxvdzdx
On a heating curve, what does a horizontal line represent? Why is the line flat at
certain points?
Answers
Answer:
It is going through a phase change when it is flat.
Explanation:
During the horizontal line segments, there is no change in temperature, so kinetic energy remains constant. However, all the energy that is absorbed or released is related to changes in potential energy.
On a separate sheet of paper:
17. David kicks a football at 43.0° to the horizontal at 67.0 m/s from the ground.
a) How high did Aaron kick the ball?
b) Find the time of travel.
c) How far away does it hit the ground?
18. Emiliano kicks a soccer ball to score a goal at 18.0° to the horizontal at 43.0 m/s from the
ground. She is standing 100 m away from the goal.
a. How high did Hailey kick the ball?
b.
Find the time of travel in the air.
c. How far away does it hit the ground? Will she score
Answers
Answer of the all following horizontal force question as follows.
What is horizontal force?Horizontal force is a type of force that acts parallel to the ground, or in a horizontal direction. It is also known as a lateral force. This type of force is often encountered in everyday life and in physics.
a) The height of Aaron's kick can be calculated using the equation: h = (v^2sin2θ)/2g, where v is the initial velocity, θ is the angle of projection and g is the acceleration due to gravity. Plugging in the given values, we get h = (67^2sin(43))/ (2*9.8) = 36.3 m.
b) The time of travel can be found using the equation: t = (2v sinθ)/g. Plugging in the given values, we get t = (2*67sin(43))/9.8 = 7.72 s.
c) The distance of the kick can be found using the equation: d = (v^2sin2θ)/g. Plugging in the given values, we get d = (67^2sin(2*43))/9.8 = 130.3 m.
18-
a. Hailey kicked the ball to a height of 21.5 m.
b. The time of travel in the air was 2.5 s.
c. The ball hit the ground 91 m away from the goal. Since she was standing 100 m away, she will not score a goal.
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Một đoàn tàu đang chuyển động với vận tốc v0 =72km/h thì hãm phanh chuyển động chạm dần đều sau 10 giây đạt vận tốc v1= 54km/h hỏi
Sau bao lâu kể từ lúc hãm phanh thì tàu đạt v = 36km/h và sau bao lâu thì dừng hẳn
Answers
Answer:
I don't understand ,I'm sorry
A 75-kg man is riding in a 30-kg cart at 2.0 m/s. He jumps off in such a way as to land on the ground with no horizontal velocity. The resulting change in speed of the cart is:
Answers
Answer:
Explanation:
We shall apply law of conservation of momentum .
M and m be mass of man and boat . V and v be velocity of man and boat .
MV = mv
75 V = 30 v
2 .0 m/s is relative velocity of man wrt boat .
Given v + V = 2
V = 2 - v
75 ( 2 - v ) = 30 v
150 - 75 v = 30 v
150 = 105 v
v = 1.43 m /s
What happens as you move the north side of the magnet into the coil?
Answers
Given:
A coil is connected to the bulb and a magnet is placed near the coil.
To find the consequence of moving the north side of the magnet towards the coil.
Explanation:
The changing magnetic field across the coil induces a current in the coil.
This is known as electromagnetic induction.
Here, the north side of the magnet moves towards the coil, this results in the change in the magnetic field across the coil.
The changing magnetic field induces a current in the coil.
As the coil is connected to the bulb, the induced current produced in the coil due to the moving magnetic field passes through the bulb.
Thus, the bulb glows.
Final Answer: The bulb glows as we move the north side of the magnet into the coil.
The ethical guidelines related to animal research dictate that
animals are not harmed under any circumstance
animals are treated as humanely as possible
animals are used even when there are other ways to test a hypothesis
O animals are used to test any substance that might harm humans
O animals are excluded from participation in any psychological research
Question 10 Multiple Choice Worth 3 points)
(01.04 MC)
Answers
Answer:
Animals are treated as humanely as possible.
Explanation:
Ethical guidelines relating to animals are laid down principles or laws that guide against the maltreatment of animal in any way during or for a research. As the use of some animals for various researches can not be over emphasized, because of the close proximity between their body tissues to that of humans.
The ethical guidelines enforce treating animals as humanly as possible or achievable. This ensure appropriate handling and treatment of the animals.
A 20 cm square frame that can rotate about the 00' axis is placed in a homogeneous magnetic field with 0.5T induction directed vertically downwards.
a) Draw vectors of forces acting on the sides of the frame.
b) calculate the values of these forces and the resultant force acting on the frame.
c) calculate the torque of the frame.
Answers
The solution to this task is f00king Dis.
The students in the diagram wanted to calculate the speed of sound. They
heard the echo 2.91
seconds after they hit
the wooden blocks
together.
They completed the
following calculation to
calculate the speed of
the sound wave 480
3.2 = 150 m/s. explain
why the answer is
incorrect and calculate the true value.
Answers
Isolate the variable by dividing each side by factors that don't contain the variable.
m
=
32.021
¯
3
s
Can someone please answer this, ill give you brainliest Would be very appreciated.
Answers
Answer:
False
Explanation:
Solid water (ice) has a lesser density than liquid water. Hence, the statement is false.
Answer:
False
Explanation:
Let's know the relationship
Density=Mass/VolumeDensity is indirectly proportional to volume
If volume is less density is more and if volume is more density is less.
But Density also depends on temperature
Higher the temperature higher the density.
Liquid stage of water has higher temperature than solid .Liquid has higher density than solid .
A machine which has an energy loss of 10% will have efficiency of
Answers
Answer:
90%
Explanation:
if you lose 10% of a 100 you get 90
when a vapor condenses to a liquid, an amount of thermal energy (Q
-m Hv) must be removed from the vapor true of false
Answers
Answer:
true
Explanation:
I did this unit for science
if the car travels thrice(3times) around the track,who much is the total distance covered?
Answers
Which planet has a tilted axis of rotation similar to that of earth, which means it has seasons?.
Answers
Answer:
Uranus
Explanation:
it's uranus....
Explain the centripetal force or Newton's second law...
Answers
Answer: a centripetal force is toward the center of curvature, the same as the direction of centripetal acceleration. According to Newton's second law of motion, net force is mass times acceleration: net . For uniform circular motion, the acceleration is the centripetal acceleration
Explanation:
Centripetal force is the force which causes the change in direction of velocity towards the center of the circular motion of an object.
What is Centripetal Force?Centripetal force is any kind of force which causes a change in the direction of velocity of an object which is moving towards the center of the circular motion. The component of this force which is perpendicular to the velocity of the object is the part which results in the centripetal force.
The force of gravity which acts up on a satellite in the orbit is an example of a centripetal force. The friction of the tires of a car which makes a turn that is similarly provides centripetal force on the car.
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Which one of the following expressions gives the displacement of the block as a function of time? Let x be in cm
Answers
The expression that gives the displacement of the block as a function of time is:
x(t) = A * sin(ωt + φ)
where A is the amplitude, ω is the angular frequency, t is the time, and φ is the phase constant.
To determine the expression for the displacement of the block, we need to consider the characteristics of the motion. Based on the given information, it can be inferred that the block undergoes simple harmonic motion. In simple harmonic motion, the displacement can be expressed as a sinusoidal function of time.
The general equation for simple harmonic motion is x(t) = A * sin(ωt + φ), where A represents the amplitude, ω is the angular frequency, t is the time, and φ is the phase constant.
By observing the given expression, we can conclude that it matches the form of the general equation for simple harmonic motion. Therefore, the correct expression for the displacement of the block as a function of time is x(t) = A * sin(ωt + φ).
The displacement of the block as a function of time can be represented by the equation x(t) = A * sin(ωt + φ). This expression captures the sinusoidal nature of the block's motion and incorporates the parameters of amplitude, angular frequency, and phase constant.
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A toy plane is displaced 12m to the right and then 16m upward.
What is the magnitude of the resultant displacement?
Answers
20m [E 53 degree N]
I attached a photo to answer you question. Hope this helps!
A rose plant inherited two alleles for white flower petals.
Which conclusion is best supported by the given information?
Answers
Answer:
a
Explanation:
Answer:
A or each parent had at least one allele for white pedals
Explanation:
A taser sends about 1100 V through the human body, resulting in an average current of 2.5 mA. a) Determine the Power output of the taser. b) How much charge (C) flows per second? c) How many electrons flow through the body per second when the taser is deployed through someone's body?
Answers
This question involves the concepts of current, power, and charge.
a) The power of taser is "2.75 watt".
b) The magnitude of charge flow per second "2.5 x 10⁻³ C/s".
c) Electrons flow per second is "1.56 x 10¹⁶ electrons/s".
a) PowerThe power of the taser can be given by the following formula:
P = IV
where,
P = Power = ?I = current = 2.5 mA = 2.5 x 10⁻³ AV = potential difference = 1100 VTherefore,
P = (2.5 x 10⁻³ A)(1100 V)
P = 2.75 Watt
b) Charge Flow per Second
The charge flow per second is equal to the current passing through taser.
\(\frac{q}{t}=I\)
where,
\(\frac{q}{t}\) = charge flow per second = ?I = current = 2.5 mA = 2.5 x 10⁻³ ATherefore,
\(\frac{q}{t}=2.5\ x\ 10^{-3}\ C/s\)
c) Electron Flow per SecondThe electron flow per second is given by the following formula:
\(I = \frac{q}{t} = \frac{ne}{t}\\\\\frac{n}{t}=\frac{q}{te}\)
where,
\(\frac{n}{t}\) = electrons flow per second = ?e = charge on one electron = 1.6 x 10⁻¹⁹ CTherefore,
\(\frac{n}{t}=\frac{2.5\ x\ 10^{-3}\ C/s}{1.6\ x\ 10^{-19}\ C}\\\\\frac{n}{t}=1.56\ x\ 10^{16}\ electrons/s\)
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Ở nhiệt độ không đổi, dưới áp suất 10^4 Pa l, một lượng khí có thể tích 10l. Tính thể tích lượng khí đó dưới áp suất 5.10^4 Pa
Answers
Answer:
Thể tích cuối cùng, V2 = 2 L
Explanation:
Cho các dữ liệu sau đây;
Khối lượng ban đầu = 10 L
Áp suất ban đầu = 10⁴ = 10000 Pa
Áp suất cuối cùng = 5 * 10⁴ = 50000 Pa
Để tìm tập mới hoặc tập cuối cùng, chúng ta sẽ sử dụng định luật Boyle;
Để tìm tập mới V2, chúng tôi sẽ sử dụng định luật Boyles.
Boyles phát biểu rằng khi nhiệt độ của khí lý tưởng được giữ không đổi, áp suất của khí tỉ lệ nghịch với thể tích mà khí chiếm giữ.
Về mặt toán học, định luật Boyles được đưa ra bởi;
\( PV = K\)
\( P_{1}V_{1} = P_{2}V_{2} \)
Thay vào phương trình, ta có;
\( 10000 * 10 = 50000V_{2} \)
\( 100000 = 50000V_{2} \)
\( V_{2} = \frac {100000}{50000}\)
\( V_{2} = 2 \)
Thể tích cuối cùng, V2 = 2 L
Which are most likely to be used during a routine visit to the dentist?
CO
radiopharmaceuticals and X-rays
ultrasound and X-rays
lasers and tracers
ultrasound and radiopharmaceuticals
Answers
Answer:
The most likely items to be used are;
Ultrasound and X-rays
Explanation:
A routine visit to a dentist consists of two areas of activities, including;
a) Dental examination and check up
b) Oral prophylaxis, and dental cleaning
The dental examination may involve the use of X-rays, which allow the detection of cavities between the teeth
The dental cleaning can be carried out with the use of an ultrasound cleaner, which allow the cleaning of sensitive teeth without hurting the patient
Therefore, the items most likely to be used during a routine dental visit are ultrasound and X-rays
Answer:
ultrasound and x-rays
Explanation: