Answers
Answer:
We want to solve the sum:
6.74*10⁴ + 8.95*10⁴
first, we take the common factor 10⁴ out, so we get:
(6.74 + 8.95)*10⁴
Now we solve the sum:
(15.66)*10⁴
Now we want to rewrite it in exponential form, wo we can rewrite it as:
(15.66)*10⁴ = (1.566*10)*10⁴ = (1.566)*10*10⁴ = (1.566)*10⁴⁺¹ = 1.566*10⁵
k = 5.
Related Questions
If you are going to calculate speed, what properties of an object’s motion must you know?
Answers
you are using a wrench to rotate a bolt around its center. consider all the forces in (figure 1), indicated by the arrows, to have the same magnitude. which of the following scenarios apply zero torque?
Answers
The following situations use no torque. C=D, A,B,E,C,D.
Describe a magnitude example.Size is referred to as magnitude. A automobile is traveling more quickly than a bike, for instance, when it comes to speed. In this case, the car is moving faster than the bike by a larger margin. It reveals the direction or size, whether absolute or relative, in which an object moves.
How big is a vector supposed to be?The vector's length determines its magnitude. The symbol for the vector's magnitude is a. To learn more about a vector's magnitude, see to its introduction. Vector magnitude formulas for two dimensions.
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which items are matter?
Answers
Answer:
which items are matter?
battery , mobile phone
Two projectiles are fired at equal speeds but different angles. One is fired at an angle of 40° and the other at 50°. With no air resistance,A) The one with 40° will hit the ground first but with a lower range.B) The one with 50° will hit the ground later but with a lower range.C) both hit at the same time and with the same range.D) None of the above
Answers
In order to determine which of the given sentence is true, take into account the following formulas for the range and total time of the trajectory of a body, in a parabolic motion.
\(\begin{gathered} R=\frac{v^2_o\sin(2\theta)}{g} \\ t=\frac{2v_o\sin\theta}{g} \end{gathered}\)replace the values of the given angles for both projectiles and compare the results, as follow:
first projectile:
\(\begin{gathered} R_1=\frac{v^2_o\sin(2\theta)}{g}=\frac{v^2_o\sin(2\cdot40)}{g}=0.98\frac{v^2_o}{g} \\ t_1=\frac{2v_o\sin\theta}{g}=\frac{2v_o\sin(40)}{g}=0.64\frac{v^{}_o}{g} \end{gathered}\)second projectile:
\(\begin{gathered} R_1=\frac{v^2_o\sin(2\theta)}{g}=\frac{v^2_o\sin (2\cdot50)}{g}=0.98\frac{v^2_o}{g} \\ t_1=\frac{2v_o\sin\theta}{g}=\frac{2v_o\sin (50)}{g}=0.76\frac{v^{}_o}{g} \end{gathered}\)Then, based on the previous results, youcan notice that both obtain the same range but the first projectile hits the ground with a lower time. None of the given options describes the previous result, then, you have:
D) None of the above
What kind of machines do astronautical engineers work with?
Answers
The astronautical engineers work with machine that fly outside the Earth's atmosphere.
What is aerospace engineering?
The design, development, testing, and production of aircraft, spacecraft, and associated systems and equipment fall within the purview of aerospace engineering. The two main and overlapping sections of the field—aeronautical engineering and astronautical engineering—have historically concentrated on issues relating to air and space flight.
The theory, technique, and application of flight within the earth's atmosphere are the main topics of aeronautical engineering.The science and technology of spacecraft and launch vehicles are the main areas of interest in astronautical engineering.Learn more about aerospace and aeronautical engineering here:
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Humans interpret visible light as colors.
Colors are the result of objects reflecting and absorbing
light.
How to combine these sentences
Answers
Answer:
humans interpret visable light as colors which is the result of objects reflecting and absorbing
light.
Explanation:
Answer:
The color of an object is actually the wavelengths of the light reflected while all other wavelengths are absorbed.
Explanation:
Color, in this case, refers to the different wavelengths of light in the visible light spectrum perceived by our eyes.
Please help, these questions are actually irritating me
**If the simple machine reduces the amount of force, what must be increased? (Think of using an inclined plane)**
A.) the speed of the input force
B.) the distance over which the force is applied
C.) the work the simple machine performs
D.) the size of the simple machine
**What is an input force?**
A.) the force a simple machine applies to an object
B.) the force a person applies to a simple machine
C.) the applied force on a system
D.) the net force on a system
**A pair of scissors is which category of lever?**
A.) 1st class
B.) 2nd class
C.) 3rd class
D.) 4th class
Answers
1.The distance over which the force is applied
2. The force a person applies to a simple machine
3. 1st Class
A telecommunications tower is supported by three cables affixed to its top and ground. We can find the vertical force induced in the tower by the cables by a) considering the product to pairs of vectors and projecting a resultant force from the tower. b) Cartesian vector analysis to the coplanar forces, finding the resultant and direction cosine, and then resolving the resultant into its parallel and perpendicular components.c) applying Newton's second law of motion and the Pythagorean Theorem to the analysis. d) force resolution, the determination of force components to find the resultant vertical force on the tower. e) all of the above
Answers
The vertical force induced in the tower by the cables by:
e) all of the above. All of the methods listed (a, b, c, and d) can be used to find the vertical force induced in the tower by the cables, and each method provides a different approach to finding the solution. The choice of method will depend on the complexity of the problem and the level of mathematical sophistication required for the solution.
Vertical force inducedThe various methods listed (a, b, c, and d) all involve mathematical and physical principles that can be used to find the vertical force induced in the tower by the cables.
a) Product to pairs of vectors and projecting a resultant force from the tower: This method involves using vector dot products or cross products to find the projection of one vector onto another, which can then be used to find the magnitude and direction of the vertical force.
b) Cartesian vector analysis to the coplanar forces: This method involves finding the components of each cable force in a two-dimensional coordinate system, adding the components to find the resultant force, and then finding the direction cosine to determine the direction of the resultant force.
c) Applying Newton's second law of motion and the Pythagorean Theorem: This method involves using Newton's second law of motion (F = ma) to find the net force acting on the tower and then using the Pythagorean Theorem to find the magnitude and direction of the vertical force.
d) Force resolution: This method involves breaking down the cables' forces into their individual components, finding the net force in each direction, and then using vector addition to find the magnitude and direction of the vertical force.
Each method has its own advantages and disadvantages, and the choice of method will depend on the complexity of the problem, the level of mathematical sophistication required for the solution, and the desired level of accuracy.
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A 750 kg race car accelerates to the right. The engine applies a force of
+7000 N to the car. The total friction on the car in the opposite
direction is -200 N.
Find the net force on the car then use 'Fnet = m a' to find the
acceleration.
O a
b
Oc
Od
12.4 m/s2
10.5 m/s2
8.0 m/s2
9.1 m/s2
Answers
Answer: Option D, 9.1 m/s^2
wire (mass = 50 g, length = 40 cm) is suspended horizontally by two vertical wires which
conduct a current I = 8.0 A, as shown in the figure. The magnetic field in the region is into the
paper and has a magnitude of 60 mT. What is the tension in either wire?
Answers
The magnetic field in the region is into the paper and has a magnitude of 60 mT and the tension in either wire is 0.096 N.
To find the tension in either wire, we can apply the equation for the force experienced by a current-carrying wire in a magnetic field.
The force experienced by a current-carrying wire in a magnetic field is given by the equation F = B * I * L * sin(θ), where B is the magnetic field strength, I is the current, L is the length of the wire, and θ is the angle between the wire and the magnetic field.
In this case, the wire is suspended horizontally by two vertical wires, and the magnetic field is into the paper. Since the wire is horizontal, the angle between the wire and the magnetic field is 90 degrees, so sin(θ) = 1.
The force experienced by the wire due to the magnetic field is F = B * I * L.
Given:
Current (I) = 8.0 A
Magnetic field (B) = 60 mT = 60 * 10^(-3) T
Length of the wire (L) = 40 cm = 40 * 10^(-2) m
Substituting the given values into the equation, we get:
F = (60 * 10^(-3) T) * (8.0 A) * (40 * 10^(-2) m)
Simplifying the expression, we find:
F = 0.192 N
Since the wire is suspended by two vertical wires, the tension in each wire will be half of the total force. Therefore, the tension in either wire is 0.192 N / 2 = 0.096 N.
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Jeff finds a pond during a nature walk, and he has some questions based on his observations of the pond.
Which question can he answer through a scientific investigation?
Which organisms are part of the food web in the pond?
How much money should be spent to make the pond more attractive?
Which pond animals would make the best pets?
Which plants in the pond are the prettiest in summer?
Answers
Answer:
Which organisms are part of the food web in the pond?
Explanation:
A "scientific investigation" is a method of looking for an answer with the help of a scientific method. It helps a person learn more about the world around him.
Since the scientific investigation only employs "measurable" observations, then the only question he can ask is the types of organisms (which is measurable) that belonged to the pond's food web. This question is more focused on observing the pond, unlike the other questions that talked about different things like money, having a pet and summer season–these are not directly observable and measurable in the current situation.
Answer: Which organisms are part of the food web in the pond?
Explanation:
A glider of length 12.4 cm moves on an air track with
constant acceleration (Fig P2.31). A time interval of 0.628 s
elapses between the moment when its front end passes a
fixed point A along the track and the moment when its
back end passes this point. Next, a time interval of 1.39 s
elapses between the moment when the back end of the
glider passes the point A and the moment when the front
end of the glider passes a second point B farther down the
track. After that, an additional 0.431 s elapses until the
back end of the glider passes point B. (a) Find the average
speed of the glider as it passes point A. (b) Find the acceleration
of the glider. (c) Explain how you can compute the
acceleration without knowing
the distance between points A
and B.
Answers
\(19.7cm/s and 4.70 cm/s^2\) are the average speed and acceleration of the glider.
(a) As the glider's front end crosses point A, start a timer at t=0. The instantaneous speed at t=0.314s, halfway through the time interval, is \(12.4cm/(0.628s)=19.7cm/s\), which equals the glider's average speed for the interval between t=0 and t=0.628s.
(b) The instantaneous speed at the point \(t=(2.02+2.45)/2=2.23s\). is equal to \(12.4cm/(0.431s)=28.8cm/s\), which is the average speed of the glider for the time span between \(0.628+1.39=2.02s\) and \(0.628+1.39+0.431=2.45s\).
Now that we are aware of the velocities at two points, we can calculate the acceleration using the formula \([(28.8-19.7)cm/s]/[(2.23-0.314)s]=4.70cm/s2\).
(c) The average velocity over a predetermined period of time is determined using the glider's length rather than the distance between points A and B.
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Given vector A with magnitude 2N and vector B magnitude 4N, what are the minimum and maximum magnitudes of A+B?
Answers
-- If A and B are pointing in exactly opposite directions, then their sum A+B is the minimum possible value. A+B = 2 N in the same direction as B.
-- If A and B are pointing in exactly the same direction, then their sum A+B is the maximum possible value. A+B = 6 N in that same direction.
differentiate between computer and computer system
Answers
A computer is a programmable device that can automatically perform a sequence of calculations or other operations on data once programmed for the task. It can store, retrieve, and process data according to internal instructions. A computer may be either digital, analog, or hybrid, although most in operation today are digital. Digital computers express variables as numbers, usually in the binary system. They are used for general purposes, whereas analog computers are built for specific tasks, typically scientific or technical. The term "computer" is usually synonymous with a digital computers, and computers for business are exclusively digital.
Answer:
The core, computing part of a computer is its central processing unit (CPU), or processor. ... A computer system, therefore, is a computer combined with peripheral equipment and software so that it can perform desired functions.
Explanation:
Hope the answer was helpful
Each of the following figures shows a person (not to scale) located on Earth at either 40°N or 40°S latitude. Rank the figures based on how much time the person spends in daylight during each 24-hour period, from most to least. To rank items as equivalent, overlap them.
Answers
The ranking is based on the tilt of the Earth's axis and its orbit around the Sun. The figure at 40°N in June receives the most daylight because it is located at a high latitude during the summer solstice in the Northern Hemisphere. The Earth's axis tilts towards the Sun, resulting in longer days and shorter nights. The figure at 40°S in December receives a moderate amount of daylight as it is located at a lower latitude during the summer solstice in the Southern Hemisphere.
The figure at 40°N in December experiences less daylight because it is located at a high latitude during the winter solstice in the Northern Hemisphere, with shorter days and longer nights. Lastly, the figure at 40°S in June receives the least amount of daylight as it is located at a lower latitude during the winter solstice in the Southern Hemisphere, where the days are shortest and the nights are longest. Based on the information given, the ranking of figures based on the amount of daylight they experience in a 24-hour period, from most to least.
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An electric heater rated 2.75 kW is connected to a 240 V power line with a circuit breaker rated 10 A. Deduce whether or not the line will be active. when the heater is switched on.
Answers
To determine whether the line will be active when the heater is switched on, we need to calculate the current that will flow through the circuit when the heater is in operation. We can use Ohm's law, which states that current is equal to voltage divided by resistance, or I = V/R.
The resistance of the heater can be calculated using the formula:
R = V^2/P
where V is the voltage and P is the power of the heater.
In this case, the resistance of the heater is:
R = 240^2/2.75 kW = 20.87 Ω
Using Ohm's law, we can now calculate the current that will flow through the circuit when the heater is on:
I = V/R = 240/20.87 = 11.5 A
Since the current required by the heater (11.5 A) is greater than the circuit breaker rating (10 A), the circuit breaker will trip when the heater is switched on, and the line will not be active.
The electrical power of a circuit can be calculated by the equation P = V × I. The table below shows the different voltages that can be supplied to the circuit. If current stays the same, which voltage will most likely result in the smallest electrical power?
A B C D
100V 25V 5V 30V
A
B
C
D
Answers
Answer: C. 5V
Explanation:
Since P = VI, power is directly proportional to voltage
If current is constant, then the lower the voltage, the lower the power. The lowest voltage shown is 5 Volts.
Matter can undergo chemical reactions which feature of the components only stays the same in chemical reactions
Answers
In chemical reactions, the total mass of the components remains the same.
Chemical reactions involve the transformation of substances into new substances with different chemical properties. During these reactions, various changes occur, such as the rearrangement of atoms, the breaking and forming of chemical bonds, and the conversion of reactants into products. However, one fundamental principle that remains constant is the law of conservation of mass.
The law of conservation of mass states that matter cannot be created or destroyed in a chemical reaction. This means that the total mass of the reactants must be equal to the total mass of the products. No matter can be lost or gained during the reaction; it simply undergoes a rearrangement at the atomic or molecular level.
This principle holds true regardless of the complexity of the chemical reaction. Whether it involves simple reactions between two elements or complex reactions with multiple reactants and products, the total mass before and after the reaction remains constant.
This concept is vital in understanding stoichiometry, which is the quantitative relationship between reactants and products in a chemical reaction. By balancing chemical equations and applying the law of conservation of mass, scientists can determine the relative amounts of substances involved in a reaction.
Overall, while the physical and chemical properties of substances may change during a chemical reaction, the total mass of the components involved in the reaction remains constant.
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In the “Little Prince,” the Prince visits a small asteroid called B612. If the asteroid has a radius of 20.0 m and a mass of 1.00 x 10^4kg, what is the acceleration due to gravity on the asteroid (G=6.67x10-11N m2/kg2)?
Answers
The acceleration due to gravity on the asteroid, given that it has a mass of 1.00×10⁴ kg and a radius of 20.0 m is 1.67×10¯⁹ m/s²
How do I determine the acceleration due to gravity?Acceleration due to gravity of planets can be obtained by using the following formula:
g = GM / R²
Where
g is acceleration due to gravity on the planet M is the mass of the planetG is the gravitational constantR is the radius of the planetNow, we shall apply the above formula, to determine the acceleration due to gravity on the asteroid. Details below
Mass of asteroid (M) = 1.00×10⁴ KgRadius (R) = 20.0 mGravitational constant (G) = 6.67×10¯¹¹ Nm²/Kg²Acceleration due to gravity (g) =?g = GM / R²
g = (6.67×10¯¹¹ × 1.00×10⁴) / (20)²
g = 6.67×10¯⁷ / 400
g = 1.67×10¯⁹ m/s²
Thus, we can conclude that the acceleration due to gravity on the asteroid is 1.67×10¯⁹ m/s²
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What does a moss leaf cell have in their structure?
Cell membrane
Cell wall
Chloroplasts
Mitochondria
Nucleus
Which one shall I write?
Answers
A moss leaf cell have Cell wall, Chloroplasts, Mitochondria and Nucleus in their structure.
A moss leaf has a single layer of cells. Each has a cell wall and is lined with a number of chloroplasts. Each and every cell has a nucleus. The nucleus is extremely small compared to the cell. The mitochondria in the the moss leaf cell is used to integrate sugar that is produced in the cell to produce energy.
After looking at the moss leaf cell structure and the given options, except cell membrane all the other parts are present in it. The cell membrane is also known as plasma membrane. It separates the interior of the cell from the outside environment.
Therefore, a moss leaf cell have Cell wall, Chloroplasts, Mitochondria and Nucleus in their structure.
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widely accepted scientific principles do not change. true or false
Answers
Answer:
False
Explanation:
As technology advances and new evidence is found which either contradicts or supports accepted scientific principles, the principles are susceptible to change.
5 postulates of neil bohr atomic model
Answers
Answer:
What is Bohr’s Model of an Atom?
The Bohr model of the atom was proposed by Neil Bohr in 1915. It came into existence with the modification of Rutherford’s model of an atom. Rutherford’s model introduced the nuclear model of an atom, in which he explained that a nucleus (positively charged) is surrounded by negatively charged electrons.
Which would reduce the amount of effort
force needed for work to be done on an
object?
A. A small force over a long distance
B. A large force over a long time
C. A large force over a long distance
D. A large force over a short time
Answers
Answer: C. A large force over a long distance.
Add the following and give the answer using significant figures 5000+621
Answers
Answer:
;) hope it's helpful
Explanation:
5000 + 621 = 5621
Facts about 5621
Sig Figs
4
5621
Decimals
0
Scientific Notation
5.621 × 103
E-Notation
5.621e+3
Words
five thousand six hundred twenty-one
Drag the answer in order from most potential energy (at the top) to least potential energy (at the bottom).
Source:
Position D on the roller coaster
A person standing on the ground
Position A on the roller coaster
B
A person in an airplane in the sky
A
Target
Answers
A person in an airplane in the sky has the greatest potential energy, while a person standing on the ground has the least potential energy.
What is gravitational potential energy?Gravitational potential energy is the energy that an object possesses due to its position above the ground.
Mathematically, the formula for gravitational potential energy is given as;
PE = mgh
Where;
m is the mass of the objectg is the acceleration due to gravityh is the height of the objectThe greater the height or distance of an object above the ground, the greater the gravitational potential energy.
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Glycerin is poured into an open U-shaped tube until the height in both sides is 22 cm. Ethyl Alcohol is then poured into one arm until the height of the alcohol column is 18 cm. The two liquids do not mix. What is the difference in height between the top surface of glycerin and the top surface of alcohol?
Answers
The distinction in top among the pinnacle floor of glycerin and the pinnacle floor of ethyl alcohol is 0.0432 meter or 4.32 centimeter the difference in height between the top surface of glycerin and the top surface of alcohol is 4.32 centimeter.
Given the subsequent data:
Height of ethyl alcohol = 25cm to n = 0.25I mHydrostatic top = 20 cm to m = 0.2 m.Scientific data:Density of ethyl alcohol = 790 kg/m³Density of glycerin = 1260 kg / (m ^ 3)To calculate the distinction in top among the pinnacle floor of glycerin and the pinnacle floor of ethyl alcohol:The system for hydrostatic strain.Where:p is the density.g is the acceleration because of gravity.h is the top.At steady temperature, the strain on the pinnacle floor of glycerin withinside the open U-formed tube is identical to the strain on the pinnacle floor of ethyl alcohol:rho_*h_ = rho_*h_Substituting the given parameters into the system, we have;1260h_ = 790 * 0.251260h_ = 197.5h_ = 197.5/1260Height of glycerin = 0.1568 meters.Now, we are able to locate the distinction in top:Height of glycerin = 0.1568 meters.Now, we are able to locate the distinction in top:Difference = 0.2 - 0.1568Difference = 0.0432 meter or 4.32 centimeter.Read greater on hydrostatic strain here:
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Which one of the following is the longest length?
(a) 100 m
(b) 104 µm
(c) 107 nm
(d) 102 mm
Answers
Okay, let's convert all the lengths to the same unit to compare:
(a) 100 m = 100 meters
(b) 104 μm = 104 micrometers = 104 × 10^-6 meters = 0.000104 meters
(c) 107 nm = 107 nanometers = 107 × 10^-9 meters = 0.000000000997 meters
(d) 102 mm = 102 millimeters = 102 × 10^-3 meters = 0.0102 meters
The longest length is:
(a) 100 m = 100 meters
The answer is option (a).
Answer: 100 m
Explanation:
1 μm = \(10^{-6}\) m = 0,000001 m
1 nm = \(10^{-9}\) m = 0,000000001 m
1 mm = \(10^{-3}\) m = 0,001 m
∴ 100 m es la mayor longitud
For a rocket traveling at 12010 m/s, by what factor does its relativistic momentum differ from its ordinary momentum
Answers
The relativistic momentum of the rocket differ from the ordinary momentum by a factor of 1.2m.
Relativistic momentum of the rocketThe relativistic momentum of the rocket is calculated as follows;
\(P = \frac{mv}{\sqrt{1- \frac{v^2}{c^2} } } \\\\P = \frac{m(12010)}{\sqrt{1- \frac{(12010)^2}{(3\times 10^8)^2} } } \\\\P = 12,011.2 m \ (kgm/s)\)
where;
m is mass of the rocketOrdinary momentum of the rocketThe ordinary momentum of the rock is calculated from the product of mass and velocity of the rocket.
P = mv
P = 12010m (kgm/s)
Difference between the two momentumΔP = 12,011.2m - 12,010m
ΔP = 1.2m
Thus, the relativistic momentum of the rocket differ from the ordinary momentum by a factor of 1.2m.
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Why must humans limit their exposure to X-rays and gamma rays?
A. The rays can change molecules and atoms in the body into ions.
B. Exposure can cause the human body to give off heat.
O C. Even a small amount of radiation can burn the skin.
D. These rays act similarly to microwaves on the human body.
Answers
Answer:
A. The rays can change molecules and atoms in the body into ions.
What is the reactive force when a fish swims through water
Answers
The reactive force when a fish swims through water is the force of the water on the fish. This is an example of Newton’s third law of motion which states that for every action, there is an equal and opposite reaction. The active force is the fish pushing against the water, so the reactive force would be the reverse, the equal force of the water pushing back on the fish.