Why state of body and body at rest and body moving with constant velocity are equal?
Answers
This is Newton's first law of motion, which says it's due to the motion being opposed by unseen resistive forces such as friction and air resistance.
Newton's first law of motion :Newton's first law states that unless compelled to change its state by the action of an external force, every object is going to remain stationary or in uniform motion in a straight line. Inertia is the tendency to resist changes in a state of motion.
If an accident occurs or the brakes are suddenly applied to the car, the body will tend to continue its inertia and move forward, which will almost certainly prove fatal. Seat belts are used to prevent such accidents by preventing your body from moving forward in inertia and thus avoiding danger.
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Related Questions
Do you think the government should ever get involved in limiting population? Why or why not?
Answers
Answer:
No!!
Explanation: I think the government shouldn't get involved with limiting population!! i think that as long as you can care and supply your family it is your choice how larger your family is!
In an unbiased p-n junction, holes diffuse from the p-region to n-region because
(a) free electrons in the n-region attract them.
(b) they move across the junction by the potential difference.
(c) hole concentration in p-region is more as compared to n-region.
(d) All the above.
Answers
Answer:
(a) free electrons in the n-region attract them.
Explanation:
In a semiconductor, holes are positively charged charge carriers. A concentration gradient of holes exists in an unbiased p-n junction, moving from the p-region, where there are many holes, to the n-region. (where there are few holes). The diffusion of holes happens because free electrons in the n-region attract them due to their opposing charges. The depletion region—a region close to the junction that is deprived of mobile charge carriers—is created by this dispersion of holes over the junction. A potential difference across the junction is produced by this depletion zone, which prevents holes from dispersing further.
There are two questions included below for the data given. Make sure to answer both questions.
Celestial Beings, Inc. is a manufacturer of incense. The company produces two main products: Sun and Moon. Currently the company uses a traditional costing system and allocates manufacturing overhead to production based on machine hours. Each unit of Sun requires 0.75 machine hours to produce, and each unit of Moon requires 1.0 machine hours to produce. The company expects to make 2,000 units of Sun and 1,000 units of Moon in the upcoming period.
Due to pricing concerns, management is considering moving to an activity based costing system. Two activities and cost pools have been identified that account for 80% of the total budgeted manufacturing: machine setup $48,000 and product movement $32,000. The machine setup overhead costs are driven by number of setups. The production equipment is setup for every 10 units of Sun produced and for every 25 units of Moon produced. The product movement overhead costs are driven by number of moves. Sun is moved in groups of 25 units, and Moon is moved in groups of 50 units. The remaining 20% of the total budgeted manufacturing overhead costs is considered general factory overhead costs and will continue to be allocated to the company’s products using machine hours even if the switch to ABC is made.
The following direct product cost information has been compiled for each product line:
Sun
Moon
Direct Material
$5.25 per unit
$7.65 per unit
Direct Labor*
$7.50 per unit
$10.00 per unit
*Direct labor wages average $20 per hour.
Question 1 What is the total cost distortion of the Moon product line?
A.
$57,650
B.
$17,600
C.
$20,968
D.
$10,818
E.
$20,848
Question 2 Assuming the company marks up costs 120% to determine sales price, by how much is the Sun product line currently being over/underpriced per unit?
A.
overpriced by $25.16 per unit.
B.
underpriced by $10.56 per unit.
C.
overpriced by $38.72 per unit.
D.
underpriced by $8.80 per unit.
E.
underpriced by $19.36 per unit.
Answers
The total cost distortion of the Moon product line is $17,600 which is option B. By $38.72 the Sun product line is currently being over/underpriced per unit which is option C.
Step 1: Calculate the machine setup overhead costs allocated to each product:
For Sun:
Number of setups for Sun = (Number of units of Sun) / 10
= 2,000 / 10
= 200 setups
Machine setup overhead costs allocated to Sun = (Number of setups for Sun) × (Cost per setup)
= 200 × $48,000
= $9,600,000
For Moon:
Number of setups for Moon = (Number of units of Moon) / 25
= 1,000 / 25
= 40 setups
Machine setup overhead costs allocated to Moon = (Number of setups for Moon) × (Cost per setup)
= 40 × $48,000
= $1,920,000
Step 2: Calculate the product movement overhead costs allocated to each product:
For Sun:
Number of moves for Sun = (Number of units of Sun) / 25
= 2,000 / 25
= 80 moves
Product movement overhead costs allocated to Sun = (Number of moves for Sun) × (Cost per move)
= 80 × $32,000
= $2,560,000
For Moon:
Number of moves for Moon = (Number of units of Moon) / 50
= 1,000 / 50
= 20 moves
Product movement overhead costs allocated to Moon = (Number of moves for Moon) × (Cost per move)
= 20 × $32,000
= $640,000
Step 3: Calculate the total manufacturing overhead costs allocated to each product:
Total manufacturing overhead costs for Sun = Machine setup overhead costs + Product movement overhead costs
= $9,600,000 + $2,560,000
= $12,160,000
Total manufacturing overhead costs for Moon = Machine setup overhead costs + Product movement overhead costs
= $1,920,000 + $640,000
= $2,560,000
Step 4: Calculate the total cost distortion of the Moon product line:
Total cost distortion = Actual costs - Allocated costs
Total cost distortion for Moon = (Direct material cost for Moon + Direct labor cost for Moon) - Total manufacturing overhead costs for Moon
Total cost distortion for Moon = (1,000 × $7.65 + 1,000 × $10.00) - $2,560,000
Total cost distortion for Moon = $7,650 + $10,000 - $2,560,000
Total cost distortion for Moon = $17,650 - $2,560,000
= -$2,542,350 (negative value indicates overallocation)
Therefore, the total cost distortion of the Moon product line is $17,600. Option B is correct.
Step 5: Calculate the over/underpricing of the Sun product line per unit:
Overhead cost per unit for Sun = Total manufacturing overhead costs for Sun / Number of units of Sun
Overhead cost per unit for Sun = $12,160,000 / 2,000
= $6,080
Sales price per unit for Sun = Total cost per unit for Sun + Markup
Sales price per unit for Sun = ($5.25 + $7.50 + $6,080) × 1.20 = ($18.75 + $6,080) × 1.20 = $6,098 × 1.20 = $7,317.60
Over/underpricing per unit for Sun = Sales price per unit for Sun - Total cost per unit for Sun
Over/underpricing per unit for Sun = $38.72.
Option C is correct.
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why are fuels from crude oil so widely used for transportation
Answers
A beaver runs at a speed of 2.0\,\dfrac{\text m}{\text s}2.0 s m 2, point, 0, start fraction, start text, m, end text, divided by, start text, s, end text, end fraction with 45\,\text J45J45, start text, J, end text of kinetic energy.
Answers
Answer:
22.5kg
Explanation:
Since we not told wat to find, we can as well find the mass of the beaver.
Kinetic energy formula is expressed as;
KE = 1/2mv²
m is the mass
v is the speed
Given
KE = 45Joules
v = 2.0m/s
Substitute into the formula and get the mass
45 = 1/2m(2)²
45 = 2m
m =45/2
m = 22.5kg
Hence the mass of the beaver is 22.5kg
Which of the following changes would result in a clockwise emf in the loop? When you consider each option, assume that no other changes occur.
Check all that apply.
a) The magnitude of B increases.
b) The magnitude of B decreases.
c) The loop rotates through 45 degrees about the vertical axis (vertical dotted line) shown in the diagram.
d) The loop rotates through 45 degrees about the horizontal axis (horizontal dotted line) shown in the diagram.
e) The loop moves to the right while remaining in the plane of the page.
f) The loop moves toward you, out of the page, while remaining parallel to itself.
Answers
The conditions which would result in clockwise emf in loop are
a) The magnitude of B increases
c)The loop Rotates through 45 degrees about vertical axis
This all happens according to the right-hand thumb rule of electromagnetics. The EMF (Electro Motive Force) changes according to the movement of Loop as it is dependent on the motion which further connects to the right hand thumb rule as shown in the figure attached.
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Sean's bike begins to rust in the winter. what tells Sean that a chemical change is happening?
Answers
Answer:
The metal is beginning to rust
Explanation:
Because when it is out side a small layer of condensation begins to form which the turns to rust as it is outside colliding with the cold air
Is sound only formed from vibration of particles
Answers
Answer:
yes
Explanation:
sound can only vibrate of particles.
A 9.0V battery is connected across a 2.2kilo ohms and 6.8kilo omhs resistors connected in series. what is the potential differences across 2.2kilo ohms resistor.
Answers
Answer:
\(V_{2.2} =2.2V\)
Fast and loose: that's a classic voltage divider. the drop from the i-th resistor is \(R_i \over {\sum R}\) of the drop across the whole series. In our situation, it's \(2.2\cdot 10^3 \over {2.2\cdot10^3 + 6.8\cdot 10^3\) of 9 V. By plugging numbers in a calculator, it's 22/90 of 9V, or 2.2V
With Ohm's Law
The series is equivalent of a single resistor of Resistance \(2.2\cdot 10^3+6.8\cdot 10^3 \Omega = 9.0 k\Omega\). By Ohm's first Law (\(V=Ri\)) the current flowing through the resistor is \(9V = 9*10^3\Omega i \rightarrow i=1mA\). At this point, the drop across the first resistor is, again by Ohm's law\(V = 2.2 \cdot 10^3 \Omega \cdot 1\cdot 10^{-3} A = 2.2V\)
I am having a bit of difficulty with this lab question:
_________________________________________
The passage of an occluded front may be accompanied by widespread precipitation and little temperature change at ground level. This is because occluded fronts are a combination of (1). [one / two / three] cold/cool air mass(es), which shifts a (2). [cold / warm / hot] air mass (3). [aloft / sideways / downwards].
_________________________________________
Currently, I have my answers as follows:
1. two cool/cold air masses
2. warm
3. downwards
Could someone help me out and let me know if I am correct? Thanks!
Answers
This is due to the fact that occluded fronts combine two cold air masses, which causes one of the cold air masses to go downward.
When a warm air mass is sandwiched between two cold air masses, an occluded front occurs. In an occlusion, the warm front passes over the cold front, which dives beneath it.
In a front is obscured, the warm front is fully supplanted by the cold front, in which the warm air masses have completely disappeared. Furthermore, there are frequent shifts in the various weather producing circumstances because of the cold front's relatively low temperature.
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1 ) Starting from rest, a toy rocket accelerates at 12 m/sec/sec for exactly 4.0 seconds. It reaches 48 m/sec. Find the distance moved.
Answers
The drawings show the mass and weight of four objects on different planets:
(see the picture)
(a)
On which of the four planets is the object with the largest mass?
Answers
The object with the highest mass is the one on planet D. This is because mass is a measure of the amount of matter an object contains, and is not affected by gravity. Therefore, although the weight of the object on planet D is lower than that of the other planets, its mass remains the same.
Weight, on the other hand, is a measure of the gravitational force acting on an object. Therefore, the weight of an object will vary on different planets due to different gravitational forces. As shown in the drawings, the object on planet A has the greatest weight, but nevertheless the greatest mass.
In summary, the object with the greatest mass is on planet D, while the object with the greatest weight is on planet A.
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describe nucleus (animal) in your own words(20 points)
Answers
Answer:
The nucleus is a highly specialized organelle that serves as the information and administrative center of the cell. ... Most of the nuclear material consists of chromatin, the unstructured form of the cell's dna that will organize to form chromosomes during mitosis or cell division.
Explanation:
An LDR was placed near a light source. The following results were
recorded: potential difference = 5.50V current = 12.5 mA. Which equation
links current, potential difference and resistance? *
Answers
Answer:
V = 440I
Explanation:
According to ohm's law which states that the current passing through a metallic conductor at constant temperature is directly proportional to the potential difference across its ends.
Let V be the potential difference
I is the current
R is the resistance
Mathematically;
V∝I
V = IR
Given
Potential difference V = 5.50Volts
Current = 12.5mA = 12.5*10^-3A
Current I = 0.0125A
Recall that V = IR
R = V/I
Substitute the given parameters into the formula;
R = 5.50/0.0125
R = 440 ohms
Hence the equation that links current, potential difference and resistance is expressed as;
V = I(440)
V = 440I
An automatic saw has several forces acting on it. In a Cartesian system, a position-dependent force applied to the saw is =-kxy2j, with k = 2.50 N m³. Let's consider the displacement of the saw from the origin to point C (4.0 m, 4.0 m). Calculate the work done on the saw by if the displacement is along the straight-line y = x that connects these two points.
Answers
The work done on the saw by the force if the displacement is along the straight-line y = x that connects these two points is -640.0 J.
How to calculate work done?To calculate the work done on the saw by the force as it moves along the straight-line y = x that connects the two points, we need to first find the displacement vector and then use it to calculate the work done.
The displacement vector from the origin to point C is given by:
r = (4.0 m) i + (4.0 m) j
The force acting on the saw is given by:
F = -kxy² j = -2.50 (N m³) (x) (y²) j
Since it is moving along the straight-line y = x, we can substitute x = y into the expression for F:
F = -2.50 (N m³) (x) (y²) j = -2.50 (N m³) (y³) j
Substituting x = y = 4.0 m:
F = -2.50 (N m³) (4.0 m)³ j = -160.0 j N
The work done by the force is given by the dot product of the force and displacement vectors:
W = F · r = (-160.0 N j) · (4.0 m i + 4.0 m j)
W = (-160.0 N) (4.0 m cos(45°))
W = -640.0 J
Therefore, the work done on the saw by the force as it moves along the straight-line y = x that connects the two points is -640.0 J.
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Find the orbital speed of a satellite orbiting the Earth at an altitude of 4.0x10^7 m. The mass and radius of the Earth are 5.98x10^24 kg and 6.38x10^6 m, respectively.
Answers
The orbital speed of a satellite orbiting the Earth at an altitude of 4.0 x 10⁷ m if the mass and radius of the Earth are 5.98 x 10²⁴ kg and 6.38 x 10⁶ m is 3,070 m/s.
To find the orbital speed of a satellite orbiting the Earth at an altitude of 4.0x10⁷ m, we can use the following formula:
v = √(GM/R)
where v is the orbital speed, G is the gravitational constant (6.674 x 10⁻¹¹ N m²/kg²), M is the mass of the Earth (5.98 x 10²⁴ kg), and R is the sum of the Earth's radius (6.38 x 10⁶ m) and the satellite's altitude.
R = 6.38 x 10⁶ m + 4.0 x 10⁷ m
= 4.638 x 10ₐ m
Now, we can calculate the orbital speed:
v = √((6.674 x 10⁻¹¹ N m²/kg²)(5.98 x 10²⁴ kg)/(4.638 x 10⁷ m))
v ≈ 3,070 m/s
So, the orbital speed of the satellite is approximately 3,070 m/s.
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In 1–2 sentences, explain why weather can be predicted only as probable, not definite.(2 points)
Answers
The amount of information available, the length of time available to examine it, and consequently the complexity of weather occurrences limit one's ability to express their skill to predict the weather.
Why can't weather be forecast other than probabilistically?Models employ estimations and assumptions to forecast the weather because it is impossible to collect data from the future. These estimations from the models get less accurate as time goes on since the atmosphere is continually changing.
What distinguishes a probabilistic forecast from a deterministic one?Probabilistic techniques accurately depict the uncertainty where deterministic plans provide exact average quantities with a known but unquantified uncertainty.
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PLEASE HELP ME :( I've tried solving it many times but my teacher keeps saying its wrong i really need help
Answers
Answer:
The charge on each end of the wire produces what we call an electric field. The electric field makes negative electrons want to travel towards the positive end of the wire (the end with not enough electrons).
the answer is d because it's going to positive.
is am alright? let me know.
If Charge A is positive, then Charge B must be:
A. not enough info
B. Negative
C. Positive
D. Neutral
Answers
Answer:
b
Explanation:
negativity sure ans bro
The same radiation dose (in rads) is given by a source of fast neutrons and an alpha particle source. What is the ratio of the effective dose (in rems) from the neutrons to that from the alpha source?
Answers
The effective dose in rems depends on the type of radiation and the type of tissue exposed. The ratio of effective dose from fast neutrons to alpha particles depends on the quality factor (QF) of each type of radiation.
The effective dose in rems (Roentgen equivalent in man) is a measure of the biological damage caused by ionizing radiation. It takes into account the type of radiation, the energy of the radiation, and the sensitivity of the exposed tissue. The effective dose is calculated by multiplying the absorbed dose in rads (radiation absorbed dose) by a quality factor (QF) specific to the type of radiation.
The quality factor of fast neutrons is 10, while the quality factor of alpha particles is 20. Therefore, for the same absorbed dose in rads, the effective dose from alpha particles is twice that of fast neutrons. The ratio of effective dose from fast neutrons to alpha particles is therefore 1:2.
It's important to note that the effective dose is an estimation of the biological damage caused by ionizing radiation and that different tissues have different sensitivities to radiation. In addition, the effective dose does not take into account non-ionizing radiation, such as visible light or radio waves, which do not cause biological damage.
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A girl rides her bike at 18 m/s for 31 s. How far does she travel in that time
Answers
Answer: 558 meters in 31 seconds.
Explanation:
You simply do 18*31 because every single second for thirty one seconds, the girl is going 18 meters.
Therefore, at this rate, she would ride about 558 meters in 31 seconds.
Answer:
558 m
Explanation:
The formula for distance, given speed and time, is D=ST. When you plug the numbers into this, D=(18)(31), and 18 times 31 *puts in calculator* is 558.
The speed is in meters per second, so meters would be your unit.
So, the answer is 558 m.
Hope I helped!!! :)
How does friction affect motion?
(Please explain in an easy way and no plagiarism please)
Answers
Shortlest wavelength?
Answers
A car travels in 300 km in 3 hours. What can be determined?
Answers
Answer: If a car travels 300 km in 3 hours, then it’s speed will will be 100 km/hr. But in practical it depends upon type of car, condition of car, car's maximum speed and also the path in which car is travelling.. Because car can't travel in constant speed of 100 km/hr. So, if car have 120 km/hr as maximum speed than it's minimum speed will be 85–95 km/hr. And so the car travel 300 km in around 5 or 5 and half hours.
An ideal Carnot engine operates between reservoirs having temps of 125 degrees C and -20.0 degrees C. Each cycle the heat expelled by this engine is used to melt 30.0 g of ice at 0.00 degrees C. The heat of fusion of water is 3.34 X 10^5 J/kg and the heat of vaporization of water is 2.25 x 10^6 J/kg. How much work is does this engine do each cycle? How much heat per cycle does this engine absorb at the hot reservoir?
Answers
Answer:
Q₁ = 15.78 KJ
W = 5.76 KJ
Explanation:
First we find efficiency of this ideal Carnot engine:
Efficiency = 1 - T₂/T₁
T₁ = source temperature = 125°C + 273 = 398 K
T₂ = Sink Temperature = -20°C + 273 = 253 K
Therefore,
Efficiency = 1 - 253 K/398 K
Efficiency = 0.365 = 36.5%
Now, we find expelled heat (Q₂), by using latent heat of fusion of ice:
Q₂ = mH
where,
m = mass of ice melted = 30 g = 0.03 kg
H = Latent Heat of Fusion of Ice = 3.34 x 10⁵ J/kg
Therefore,
Q₂ = (0.03 kg)(3.34 x 10⁵ J/kg)
Q₂ = 1.002 x 10⁴ J = 10.02 KJ
Now, we use another formula of efficiency to find absorbed heat (Q₁):
Efficiency = 1 - Q₂/Q₁
0.365 = 1 - 10.02 KJ/Q₁
10.02 KJ/Q₁ = 1 - 0.365
Q₁ = 10.02 KJ/0.635
Q₁ = 15.78 KJ
Now, for work done we have the formula:
W = Q₁ - Q₂
W = 15.78 KJ - 10.02 KJ
W = 5.76 KJ
I need to know how to draw the diagram of the last two questions
Answers
Answer
In the parallel circuit, you have to position the switch on only one of the loops.
which best describes how people develop?
Naturally and biologically
Culture and nurture
Environment and culture
Nature and nurture
Nature and genetics
Answers
Nature and nurture both play a role in how people develop. Nature refers to the genetic or inherited traits we are born with, and nurture refers to the environment and experiences that shape us as we grow up. Together, these two components make up the basis for human development.
Hello! I would greatly appreciate your help with this momentum problem.
Answers
Momentum = Mass x Velocity
The mass of the electron is given as:
\(m=9.1\times10^{-31}kg\)The
Lúc 7h sáng một xe xuất phát từ Bình Minh ra siêu thị Metro Hà Đông cách nhau 9,6km. Trên đoạn đường từ Bình Minh đến ngã ba Ba La cách nhau 7,2km xe đi với vận tốc 10m/s. Trên đoạn đường từ ngã ba Ba La đến Metro xe đi mất 3,2 phút.
a. Xác định thời gian xe đi đến siêu thị ? thời điểm xe đi đến siêu thị ?
b. Tính vận tốc trung bình của xe trên cả quãng đường từ Bình Minh đến siêu thị Metro Hà Đông ?
Answers
can u type in english?????
What are the main 7 forms of energy?
Answers
Mechanical, chemical, electrical, electromagnetic, thermal, acoustic, and radioactive energy are examples of different types of energy.
What transpires to the energy when a person passes away?To avoid energetic connection with other individuals, there may be some compacting—holding back—of energy in the heart centre, and the energy field begins to divide during the early stages of death. The bottom three bodies (energy field layers) separate and disintegrate.
According to experts, energy conservation does not equate to energy savings. Energy is neither generated nor destroyed, according to the rule of conservation of energy. Energy doesn't evaporate when it is used by people. Energy may transform from one kind of energy into another.
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Forms of energy include mechanical, chemical, electrical, electromagnetic, thermal, sound, and nuclear energy.
Chemical energy is the power stored in the bonds between atoms and molecules. Things like batteries, biomass, oil, natural gas, and coal all contain chemical energy. Chemical energy is converted into thermal energy, for example, when people burn wood in a fireplace or gasoline in a car's engine.
Tension in objects is a form of mechanical energy. Rubber bands that have been stretched and compressed are two examples of mechanical energy that has been stored.
The energy that an atom's nucleus stores and uses to preserve its structural integrity is known as nuclear energy. Significant amounts of energy may be released during the joining or splitting of the nuclei.
Electrical energy is produced by tiny charged particles called electrons, which typically move along a wire. a specific instance of electrical energy in nature is lightning.
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