An ant crawls 500 cm north, 300 cm west, 200 cm south, then 300 cm east. What is its distance traveled?
Answers
When an ant crawls 500 cm north, 300 cm west, 200 cm south, then 300 cm east, the distance traveled will be 1300cm.
Distance = 500 + 300 + 200 + 300
Distance = 1300cm
In a different sense, the path an object takes to traverse a certain distance while maintaining a specific speed from one point to another is known as the distance travelled. As was previously said, the distance formula combines time, speed, and distance.
Speed times time equals distance.
The entire path an object has taken can be used to define the distance of an object. For instance, if an automobile travels 5 km east, then turns to head north for another 8 km, the final distance will be 13 km.
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Related Questions
5. When a series LRC circuit is driven at its resonance frequency, the phase difference between the drive voltage and the voltage across the resistor will be:
Answers
When a series LRC circuit is driven at its resonance frequency, the phase difference between the drive voltage and the voltage across the resistor will be 0 degrees.
Solution - Resonant frequency is the natural frequency where a medium vibrates at the highest amplitude. Resonant frequency is usually denoted as f0. Resonance is witnessed in objects in equilibrium with acting forces and could keep vibrating for a long time under perfect conditions. This is because, at resonance, the inductive and capacitive reactances cancel each other out, resulting in a purely resistive circuit where the voltages across the resistor and the source are in phase.
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Frank drove from New York City to Los Angeles. The distance between the two cities is 2,760 miles. After 16 hours, he still had to drive 1,400 miles to reach Los Angeles. How far did he drive per hour? miles
Answers
He traveled 16 hours
This means he drove: 1360 miles / 16 hours = 85 miles per hour.
When friction occurs, which of the following types of energy is produced?
оооо
chemical energy
electromagnetic energy
heat energy
nuclear energy
Answers
Answer:
heat energy
Explanation:
Friction causes the molecules on rubbing surfaces to move faster, so they have more energy. This gives them a higher temperature, and they feel warmer.
Heat Energy is occurred when friction is produced .
We can relatively observe the warmth on surfaces due to friction too.
he first right-hand rule relates which two quantities?
A.
current (thumb) to magnetic field (fingers)
B.
magnetic field (thumb) to current (fingers)
C.
current (thumb) to force (fingers)
D.
force (thumb) to current (fingers)
Reset Next
Answers
Answer: A.
current (thumb) to magnetic field (fingers)
Answer:
A. current (thumb) to magnetic field (fingers)
Explanation:
According to the Right-Hand Thumb rule, if we are holding a current- carrying straight conductor in our right hand such that the thumb points toward the direction of current, then the fingers will wrap around the conductor in the direction of the field lines of the magnetic field.
Hope it helps.
If you have any query, feel free to ask.
A father is homo….zygou dominant for green eyes, the mother is heterozygous. How many of the offspring will have green eyes?
Answers
Answer:
100%
Explanation:
Father - EE
Mother - Ee
3. What is the potential energy of a 8 Newton book sitting on a shelf that is 12 meters high?
Answers
Answer:
P = 96 J
Explanation:
Given that,
Weight of the book, W = mg = 8 N
It is placed at a height of 12 m
We need to find the potential energy of the book. The potential energy of an object is given by the formula as follows :
E = mgh
mg = Weight
\(E=8\ N\times 12\ m\\E=96\ J\)
So, the potential energy of the book is 96 J.
A boy weighting 50 kg stands on an ice skate, the blade of which is 0.5 cm wide and 25 cm long. What pressure does he exert?
Answers
Answer: Pressure exerted by the boy is 4×\(10^{5}\) pa.
Explanation:
Given: Mass (m) = 50 kg
Gravitational force (g) = 10 \(m/s^{2}\)
Width of a blade = 0.5 cm
Length of a blade = 25 cm
To find: P = ?
As we know that,
Pressure \(P = \frac{F}{A} ...(1)\)
Where, F is force and A is Area
Force is given by,
\(F = mg\)
\(F = (50)(10)\)
\(F = 500 N\)
Area is given by,
Area = length × Width
\(= (0.5)(25)\\= 12.5 cm^{2} \\\)
Convert the area into \(m^{2}\).
⇒ Area = \(= 0.00125m^{2}\)
Put the value of F in equation (1)
\(P = \frac{500}{0.00125}\)
\(P = 400,000 pa\)
P = 4×\(10^{5}\) pa
Hence, Pressure exerted by the boy is 4×\(10^{5}\) pa
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eating disorder Symptoms
Answers
Answer:
some symptoms can be lack of energy, and dizziness.
Explanation:
A skater increases her velocity from 4.0 m/s to 10.0 m/s in 3.0 seconds. What is the skater’s acceleration?
Answers
Answer:
answer is 2 ms-2
Explanation:
v= 10.0 m/s
u=4.0 m/s
t=3.0 seconds
a=?
from equation, v= u+at
10.0 m/s =4.0 m/s + a × 3s
6 m/s. = 3a
6/3 = a
2.0 m/s-2 = a
in what direction would a b field have to point for a beam of proton moving to the left to go un-deflected through a region where there is a uniform electric field pointing vertically upward?
Answers
Force by the electric field is downwards as the charge is -ve
Now forced by M-F must be upwards
Using Right-hand sule, M.F must be
out of a plane or out of paper
It can be seen that for a positive charge the electric field is radially away from that positive charge. If it is a negative charge we see that the electric field points radially inward toward that negative charge. The direction of the electric field is always positive when placed in the space surrounding the source charge. The direction in which the test charge is pushed or pulled.
Since the electric field is a vector quantity it can be represented by a vector arrow. An electric field is defined mathematically as a vector field assignable to any point in space and is the force per unit charge exerted on a positive test charge resting at that point. Electric fields are generated by electric charges or time-varying magnetic fields. Generates an electric field in the surrounding spatial region. This is Coulomb's law of the conceptual electric field.
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what is average velocity??
Answers
Answer:
The average velocity of an object is its total displacement divided by the total time taken. In other words, it is the rate at which an object changes its position from one place to another. Average velocity is a vector quantity.
Explanation:
Hope it helpsA 31.7 kg kid, initially at rest, slides
down a frictionless water slide at 53.2º.
How fast is she moving 3.45 s later?
Answers
Answer:
34.55m/s
Explanation:
Now from Newton's law of motion;
V= U+ a×t
V- final velocity
U- initial velocity = 0m/s
a- acceleration
t- time
Note that a = g/cos53.2°
Now g is acceleration of free fall due to gravity
This is a vertical acceleration since the course of motion is along a plane inclined at 53.2° to the height of the pool.
Also from trigonometry identity
cos 53.2°= vertical component a/ acceleration ( cos a = adjacent/hypothenus)
If we assume g = 9.8m/S2 { a generally given value}
Substituting t = 3.45s as the time of consideration, we have;
V = 0 + (9.8/cos53.2°)×3.45
= -34.55m/s
Note the -ve sign is just telling us this velocity is causing the object to move down.
Hence V = 34.55m/s
Answer:
27.07 m/s
Explanation:
this is the right answer
which type of magnetic material cannot be used to make permanent magnets: a ferromagnetic substance, an antiferromagnetic substance, or a ferrimagnetic substance?
Answers
Antiferromagnetic materials are magnetic materials that cannot be used to create permanent magnets.
Explain about the Antiferromagnetic materials?In the case of anti-ferromagnetism, materials that exhibit magnetic ordering below a certain temperature exhibit magnetic magnetism.
Antiferromagnetic substances have magnetic moments that are antiparallel to the applied magnetic field, while ferromagnetic substances have magnetic moments that are parallel to the applied magnetic field. This causes antiferromagnetic materials to have zero total magnetism and positive magnetism for ferromagnetic materials.
Two magnetic characteristics of materials are ferrimagnetism and anti ferromagnetism. Ferrimagnetic materials are strongly drawn to a magnetic field in contrast to antiferromagnetic materials. Other magnetic properties of matter include para magnetism, ferromagnetism, and diamagnetism.
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A conducting wire of 60cm long is moved at a constant speed of 5m/s perpendicular to a uniform magnetic field. If thr EMF induced in the wire is 2volts, deduce the value of tge magnetic induction
Answers
The value of magnetic induction is 0.667 T.
The EMF induced in a conductor traveling through a magnetic field is given by:
EMF = B x L x v
where B is the magnetic induction (measured in Tesla), L is the conductor's length (in meters), and v is its speed (in meters per second)
What we have here is
L = 60 cm = 0.6 m (because the length of the wire is specified in centimeters) (since the length of the wire is given in centimeters)
v = 5 m/s
EMF = 2 V
When these values are inserted into the equation, we obtain the following:
2 V = B x 0.6 m x 5 m/s
Calculating for B, we obtain:
B = 2 V / (0.6 m x 5 m/s) = 0.666... T
Thus, the magnetic induction is 0.667 T, rounded to three significant numbers.
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A 20,000 kg truck is traveling at 10 m/s. Calculate the truck's momentum. (p = m v)
If the truck collides with a wall, and the crush zone takes 0.01 s to stop the truck, what is the force experienced by the truck during the collision? (F Δt = m Δv => F = (m Δv)/Δt )
Answers
Answer:
200,000 and 20,000,000
Explanation:
Substituting the values into the equation of momentum, we get that the momentum is p = mv = 20,000*10 = 200,000. Using the equation provided to solve for the force the truck experienced, we find: 20,000*10/0.01 = 20,000,000.
I hope this helps!
For this activity, you are going to play the part of a mission control support team member who helps plan astronauts’ daily schedules and lives. We will focus on one of the most important activities for anyone, but especially for astronauts as they try to stay strong and healthy in space—eating!
You will design a days’ worth of meals that you would like to eat as an astronaut, and suggest any modifications that would need to be put in place to make the food amenable to a zero-gravity/non-refrigerated environment.
Step 1: Pick Three Meals
Choose a breakfast, lunch, and dinner. For now, your only rules are to avoid bread, soda, and ice cream—anything else is up for grabs! Each meal must consist of a protein, grain, fruit and vegetable.
Step 2: Modify Your Meals
What about your meals might need to change in order for them to be edible in space? You will likely have to do some research on each food item you selected to determine what special packaging or preparation is required.
Step 3: Write a Menu
In a word processing program, write a menu for the astronaut who will be eating these meals. For each meal, include:
What the meal is
Special packaging that is required (remember, some foods can fly away more easily than others!)
Any preparations that need to be done before consuming (ie, hydrating freeze-dried food)
To complete this activity, submit your menu with all of the above specifications addressed.
Answers
As an astronaut meal planner, here is a menu for a day's worth of meals in space includes Breakfast, Lunch and Dinner.
Breakfast:
Scrambled Eggs with Vegetables
Special Packaging: Individual vacuum-sealed pouches
Preparation: The scrambled eggs with vegetables will be precooked and dehydrated. Astronauts will rehydrate the meal with hot water, stir, and allow it to sit for a few minutes before consuming. This ensures the eggs and vegetables rehydrate properly in the zero-gravity environment.
Lunch:
Teriyaki Chicken Stir-Fry with Rice
Special Packaging: Sealed pouches for each component (chicken, vegetables, rice, and sauce)
Preparation: The chicken, vegetables, and rice will be precooked and dehydrated separately. The teriyaki sauce will be in a separate pouch. Astronauts will rehydrate each component individually with hot water, then mix them together in a resealable pouch. After a few minutes, the meal will be ready to eat.
Dinner:
Grilled Salmon with Quinoa and Roasted Vegetables
Special Packaging: Vacuum-sealed pouches for each component
Preparation: The salmon will be cooked and then freeze-dried for preservation. The quinoa and roasted vegetables will be precooked and dehydrated separately. Astronauts will rehydrate the quinoa and vegetables with hot water, then warm up the salmon using a food warmer. The components will be combined on a tray and secured with fasteners to prevent them from floating away.
Modifications for space include using dehydration and freeze-drying techniques to remove water content from the food while preserving nutrients. Vacuum-sealed and sealed pouches are used to prevent spoilage and maintain freshness. Rehydration with hot water is necessary to restore the food's texture and taste.
Additionally, it's important to consider portion control and individual packaging to prevent cross-contamination and maintain food safety. The use of condiments and seasonings may be limited to avoid loose particles floating in the spacecraft.
By designing meals that are easy to prepare, consume, and clean up, astronauts can enjoy nutritious and satisfying meals while adapting to the unique challenges of the zero-gravity and non-refrigerated environment in space.
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A steam power plant operates between the pressure limit of 3.0 Mpa for the boiler and 75 kPa for the condenser. The plant operates in an ideal Rankine cycle with reheater with superheated vapor enters the high pressure turbine at 3 Mpa and 300 oC, and leaves at 1 MPa. Steam is then reheated at constant pressure to 300 oC before it is expanded to 75 kPa in a low pressure turbine. Determine:
a. the moisture content at the inlet of the condanger.
b. the met works per unit mare of steam tomane In Site.
c. the heat transter to the steam in the boter in lal per ke of steam.
d. the thermal efficiency
e. the heat transfer to cooling water passing through the condenser, in kJ per kg of steam flowing.
Answers
The dryness fraction is 0.96. Using steam tables the enthalpies at points 2, 3, and 4 can be calculated as 2936.4 kJ/kg, 2892.3 kJ/kg, and 1039.2 kJ/kg, respectively. The value of q is found to be 1438.3 kJ/kg.
a) 0.2, b) 2687 kJ/kg, c) 0.16 kJ/kg.K, d) 32%, e) 2549.52 kJ/kgPart (a): The steam is superheated at 300°C and 3 MPa, using steam tables it can be seen that the dryness fraction is 0.96.Part (b): This can be calculated using the formula shown below. The net work done by the turbine is given as follows: Net work = m (h1 - h2) + m (h3 - h4) Where m is the mass of the steam entering the turbine and h1, h2, h3, and h4 are the enthalpies at the different points in the cycle.h1 is given as 3478 kJ/kg, and using steam tables the enthalpies at points 2, 3, and 4 can be calculated as 2936.4 kJ/kg, 2892.3 kJ/kg, and 1039.2 kJ/kg, respectively.
Substituting the values in the formula gives the answer as 2687 kJ/kg.Part (c): Heat transfer per unit mass of steam to the boiler can be calculated using the formula shown below:q = h1 - h4 The value of q is found to be 1438.3 kJ/kg. Part (d): The thermal efficiency of the cycle can be calculated using the formula shown below: Efficiency = Net work output/ Heat inputHeat input can be calculated as follows: Heat input = m (h1 - h4) + m (h3 - h2) The value of heat input is calculated to be 4485.4 kJ/kg Substituting the values in the formula gives the answer as 32%.Part (e): The heat transfer to cooling water passing through the condenser is given as follows:q = m (h4 - h5)Where h4 is 1039.2 kJ/kg and h5 is 48.72 kJ/kg. The value of q is calculated to be 2549.52 kJ/kg.
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A group of athletes are trying to turn a large wheel and axle to move a stone. What can they do to move the wheel with less effort?
Answers
The spirit club is conducting a survey to find out the favorite sport of the students in the high school. Jake, a member of the spirit club asks the members of the basketball team what is their favorite sport. Is this sampling method representative of the entire school and explain
Answers
No, this sampling method is not representative of the entire school.
To determine if Jake's sampling method is representative of the entire school, we need to consider the following:
No, this sampling method is not representative of the entire school.
1. Jake only asked members of the basketball team about their favorite sport.
2. This group is likely biased towards basketball, as they are already on the basketball team.
3. To have a representative sample, Jake should have included students from various sports teams and those not involved in sports.
4. By including a more diverse group of students, the survey results would better represent the entire school's favorite sport preferences.
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The diagram shows a toy car on a number line.
A line with arrowheads at both ends has ticks marks every 2 units. The tick marks for 0, 6, and 10 are labeled. A car sits above the tick mark for 2 with a dashed red line leading to the tick mark.
What is the position of the car?
–4
1
2
4
Answers
Answer:
2
Explanation:
The ticks go by 2's and its the first one after 0
Answer:
b
Explanation:
2) Which type of bond will form between these elements?
WHICH BOND?
Answers
Hydrogen has one electron and chlorine has seven electrons in the outermost shell. In order to attain stability, they both share one electron each forming a hydrogen chloride molecule. So, one covalent bond is formed between the atoms of hydrogen and chlorine.
X The figure below represents a standing wave on a string. Find the frequency if the length L of the string is 5 m and the speed is 20 m/s
Answers
Hence frequency of the standing wave is 2 s⁻¹
What are standing waves ?Standing waves are formed when 2 waves of same wavelength and amplitude travelling in the opposite direction are superposed. Standing waves do not transport energy.
Here,
Length of the string, L = 5 m
Speed of the wave, v = 20 m/s
From the figure we can see that it is a string having two nodes and only one antinode. That means it is the first harmonic.
For first harmonic, L = λ/2
So, wavelength, λ = 2L = 2x 5
λ = 10 m
Therefore frequency, f = v/λ
f = 20/10
f = 2 s⁻¹
Hence frequency of the standing wave is 2 s⁻¹
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Your question was incomplete. Attaching the image here.
which of the following is not an example of static charge?
a.
stationary electrons
b.
stationary protons
c.
moving electrons
d.
stationary neutrons
Answers
which of the following are fire preventions guidelines
Answers
Answer:
there is no list of "the following" you might want to re-upload your question.
A stone is dropped from the top of a cliff. It hits the ground below after 3.25 s. How high is the cliff
Answers
The height of the cliff above the ground is 51.76 m.
Height of the cliffh = vt + ¹/₂gt²
where;
v is initial vertical velocityt is time of motiong is acceleration due to gravityh = 0 + ¹/₂gt²
h = ¹/₂gt²
h = ¹/₂(9.8)(3.25)²
h = 51.76 m
Thus, the height of the cliff above the ground is 51.76 m.
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C) If your displacement is 19.3m and your final position is 31.8m, what was your initial position?
Answers
Answer:12.5
Explanation: Subtract
The process of charging a conductor by bringing it near another charged object and then grounding the conductor is called
a) Charging by contact
b) Charging by polarization
c) Induction
d) Neutralization
Answers
The process of charging a conductor by bringing it near another charged object and then grounding the conductor is called Induction. The correct option is C.
The process described, in which a conductor is charged by bringing it near another charged object and then grounding the conductor, is known as induction. Induction involves the redistribution of charges within the conductor without direct contact between the two objects.
Here's how the process works: When a charged object is brought close to the conductor, the charges in the conductor are rearranged.
This occurs due to the electric field of the charged object influencing the distribution of charges within the conductor. However, the conductor itself remains electrically neutral overall.
If the conductor is then grounded, allowing it to make contact with the Earth or a large reservoir of charge, any excess charges in the conductor are neutralized or redistributed, resulting in the conductor becoming charged with the opposite polarity to that of the inducing object.
Therefore, the correct term for this process is c, induction.
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20 The metal surface of a kettle is hot. What happens to the cool air outside the kettle when it comes into contact with the hot kettle?
A The density of the air decreases and the air falls.
B The density of the air decreases and the air rises.
C The density of the air increases and the air falls.
D The density of the air increases and the air rises.
Answers
D. The density of the sir increases and the air rises.
When coming in contact with the kettle, it becomes hot, it expands and rises up, due to lesser density as compared to the surrounding air.
Carly has discovered a new radioactive isotope: unicornium-210. Based on atomic mass alone, into which of the following elements could 210Ui not decay?
A. 238U
B. 90Sr
C. 115Eu
D. 151Sm
Answers
Answer:
A
Explanation:
The element that unicornium-210 (210Ui) could not decay into based on atomic mass alone is 90Sr.
What is radioactive isotope?A radioactive isotope is a type of atom that has an unstable nucleus that spontaneously decays or disintegrates, emitting radiation in the form of particles or electromagnetic waves. This process is known as radioactive decay.
The unstable nature of the nucleus arises from having too many or too few neutrons compared to the number of protons in the atom, which affects the stability of the atomic nucleus. The decay of radioactive isotopes can have practical applications in fields such as nuclear medicine, energy production, and environmental monitoring, but can also pose health and safety risks if not handled properly.
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The resistance of the connecting wires in a series circuit is generally?
Answers
The resistance of connecting wires in a series circuit is generally additive. This means that the total resistance of the circuit is equal to the sum of the individual resistances of each wire in the circuit.
A series circuit is an electrical circuit in which components are connected end-to-end along a single pathway. In a series circuit, the current flows through each component in sequence and must flow through all components to complete the circuit. The current is the same through each component and the total resistance of the circuit is equal to the sum of the resistances of the individual components.
One of the key characteristics of a series circuit is that if one component fails, the entire circuit will be disrupted. This means that a single component failure can render the entire circuit inoperable. It is for this reason that series circuits are generally not used in critical applications, as the failure of a single component can result in a complete circuit failure.
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