Measuring tool that the student should have used in order to verify the conservation of momentum is force sensor.
What measuring tool should the student have used in order to verify conservation of momentum?To verify the conservation of momentum for closed two-cart system, student should use force sensor to measure the forces acting on carts during the collision. Force sensor can provide a quantitative measurement of forces that each cart exerts on other cart which can help to determine if momentum is conserved.
By measuring forces, student can calculate the impulse of each cart during collision. The impulse can then be used to calculate change in momentum of each cart, and if total momentum before the collision is equal to total momentum after collision, then momentum is conserved.
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what is uniforlmly acelerated motion and uniform motion
Uniformly Accelerated motion : When a body moves along a straight line and its velocity increases by equal amounts in equal interval of time then the motion is called uniformly accelerated motion. E.g.:- Motion of a freely falling body.
Uniform Motion : When a body covers equal distances in a straight line, equal intervals of time are called uniform motion. Example: a car moving at 20km/h in a straight line. When a body covers unequal distance in equal intervals of time in a straight line is called non-uniform Example : spinning wheel.
Difference About Uniformly Accelerated motion And Uniform MotionIn Uniform Velocity Motion a body will be moving with a constant /unchanging velocity moving in a particular direction and thus acceleration will be zero whereas in Uniform accelerated motion a body will move at constant acceleration and its velocity will keep changing with time at a constant/ steady rate.
IF YOU THINK MY ANSWER IS WRONG, CHANGE IT THANK YOU.A book containing the ________ of every incarcerated person has been put on display in los angeles.
With more than six million books in its collection and 19 million people living in the Greater Los Angeles Area, the system serves the biggest population of any public library system in the country.
The Los Angeles Public Library's size is what?The structure has eight stores with a total area of 538,000 square feet, approximately 89 miles of shelves, and more than 1,400 seats. There are 255 public computers with free access scattered around the building and the Computer Center. Wi-fi enables access to the internet as well.
The largest and most varied population in the country is served by the Los Angeles Public Library. There are four million people living within the library's huge 468 square mile service area, who speak more than 220 different languages.
Residents of 49 of the 88 incorporated cities in Los Angeles County, California, are served by LA County Library, one of the country's biggest public library systems.
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can Somebody Explain Please
Introduction to Newton's law of gravitation
Answer: so basically, Newtons Law states that every particle attracts every other particle in the universe with a force which is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.
Explanation: newtons law simplified in my opinion is a physical law that describes the attraction between two objects with mass.
hope this helps.
Answer:
Explanation:
she rieat
What is the value of x in the triangle? a 45-45-90 triangle with leg length x and hypotenuse length 4
Answer:
\(x = 2\sqrt 2\)
Explanation:
Given
\(Hypotenuse = 4\)
Required
Find x
Since the triangle is a 45-45-90 triangle, the following relationship exists
\(x^2 + x^2 = 4^2\) --- i.e. the other legs are equal
So, we have:
\(2x^2 = 16\)
Divide both sides by 2
\(x^2=8\)
Take square roots of both sides
\(x = \sqrt 8\)
Simplify
\(x = 2\sqrt 2\)
Answer:
7√2
Explanation:
Design a controller to control the speed of the following system. Design the system to have a controlled time constant of 2 seconds for some nominal speed (Vo). mu + Dv2 = F K=m– 2DV.
A good control system for speed is designed in such a way that, the formula is mu + Dv² = F.
A control system is made up of subsystems and processes that are put together with the objective of producing a desired output with a desired performance from a given input.
Large equipment can be moved precisely with control systems, which is not feasible without them. Huge antennas can be pointed in the direction of the universe's farthest reaches in order to pick up elusive radio signals; manually operating large antennas would be impossible.
Because of control mechanisms, lifts rapidly transport us to our destination and stop at the appropriate floor.
The equation for the control system for speed is given as,
mu + Dv² = F
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3. An electron with a mass of 9.11 X 10^-31 kg is moving at a speed of 2.19 X 10 m/s. What is the kinetic energy of the electron?
Answer:
\( 2.18\times 10^{-30} \:J\)
Explanation:
\( K.E._{Electron}= \frac{1}{2} mv^2 \\\\
= \frac{1}{2} \times 9.11\times 10^{-31}\times (2.19\times 10)^2 \\\\
=4.555\times 10^{-31}\times 4.7961\times 10^2 \\\\
=4.555\times 10^{-31+2}\times 4.7961 \\\\
=21.8462355\times 10^{-29}\\
=2.18462355\times 10^{-30}\\
=2.18\times 10^{-30} \:J\\\)
Brady chucks a water balloon at Russell in the lunchroom. Running for his life, Russell travels 147m in 9.8s. What was his speed?
1. What is capillary pressure? Difference in pressure across the interface between tuwa imm fuids in de reservoir 2. Expressing capillary pressure in terms of interfacial tension, contact angle, and capillary tube radius, 3. List two types of capillarity, 4. What is capillary hysteresis?
Capillary pressure refers to the difference in pressure across the interface between two immiscible fluids in a reservoir. There are two types of capillarity: spontaneous imbibition and forced displacement.
Capillary pressure is the pressure difference between two immiscible fluids, such as oil and water, in a porous medium. It arises due to the interfacial tension between the fluids, the contact angle at the fluid interface, and the size of the capillary tubes within the porous medium. The capillary pressure can be calculated using the Young-Laplace equation, which relates the capillary pressure to the interfacial tension, contact angle, and capillary tube radius.
There are two types of capillarity: spontaneous imbibition and forced displacement. Spontaneous imbibition occurs when a wetting fluid displaces a non-wetting fluid in a porous medium due to capillary forces. Forced displacement, on the other hand, involves injecting a fluid into a porous medium to displace another fluid.
Capillary hysteresis refers to the variation in capillary pressure during drainage (when the wetting fluid is being displaced) and imbibition (when the wetting fluid is being absorbed). This hysteresis is caused by the trapping of non-wetting fluids in the porous medium, leading to a difference in capillary pressure depending on the direction of fluid flow.
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a car traveled 5,300 km in 1 hour whats the average speed is
Answer:
5300km/h
Explanation:
That's an easy question. You can solve it yourself.
The answer can be found by dividing the Distance traveled by the Time.
Now you can solve all the problem of this rule.
Convert 0 degrees Fahrenheit into kelvin
Answer:
0 degrees Fahrenheit is equal to 273.15 Kelvins.
Explanation:
basic formula °C + 273.15 = K. (°F − 32) × 5/9 = °C. (°F − 32) × 5/9 + 273.15 = K.
Ch19: For which two out of the following 4 processes entropy of the system increase (ΔS>0)?I. Condensing water vaporII. Heating hydrogen gas from 60° C to 80° CIII. Forming sucrose crystals from a supersaturated solutionIV. Subliming dry ice
The two processes for which the entropy of the system increases (ΔS>0) are I. Condensing water vapor and IV. Subliming dry ice.
In both these processes, the system undergoes a change from a less ordered state to a more ordered state, which leads to an increase in entropy. In contrast, in process II. Heating hydrogen gas from 60° C to 80° C, the system becomes more disordered as the molecules move faster and the distribution of energy becomes more random, leading to a decrease in entropy. Similarly, in process III. Forming sucrose crystals from a supersaturated solution, the system becomes more ordered as the molecules come together in a specific arrangement, leading to a decrease in entropy.
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When there is a Crescent Moon in the night sky, how much of the entire Moon’s surface is actually lit by the Sun? Why?
Please help me quickly
Answer:
As moon goes round the earth we see the 50% surface only on full moon nights.
In the picture inner moon shows the actual illumination and outer moons shows our view from Earth
Explanation: i cant get the picture to load so....
A 3.00 m long rod (I=1/3ML2) with a mass of 10.0 kg is set so that it pivots around its end. The rod is pulled back until it is horizontal and released. A small spherical ball with a mass of 4.00 kg is placed directly under the pivot point of the rod so that the end of the rod strikes the ball when it is vertical.
What is the angular velocity at the bottom before it hits the ball?
Hi there!
Assuming the rod is pulled back 90° (π/2 radians), we can use angular kinematics to solve.
Using the equation:
\(\omega_f^2= \omega_i^2 + 2\alpha \theta\)
\(\omega_f\) = final angular velocity (? rad/sec)
\(\omega_i\) = initial angular velocity (0 rad/sec)
\(\alpha\) = angular acceleration (rad/sec², must solve for)
\(\theta\) = angular displacement (π/2 rad)
Recall Newton Second Law's rotational equivalent:
\(\Sigma \tau = I\alpha\)
τ = Torque (Nm)
I = Moment of inertia (kgm²)
α = angular acceleration (rad/sec²)
Setting the pivot point at the end, and knowing that the force of gravity works at an object's center of mass (1.5m from the rod's end), we can solve for the angular acceleration.
\(\tau= F \times r\\\\\tau = W \times r = 10(9.8) * 1.5 = 147 Nm\)
Now, solve for the moment of inertia given I = 1/3ML² at one of its ends:
\(I = \frac{1}{3}(10)(3^2) = 30 kgm^2\)
Solve for the angular acceleration:
\(147 = 30\alpha\\\\\alpha = 4.9 \frac{rad}{sec^2}\)
Now, we can use the kinematic equation to solve.
\(\omega_f^2 = 0 + 2(4.9)(\frac{\pi}{2}})\\\\\omega_f = \sqrt{2(4.9)(\frac{\pi}{2})} = \boxed{3.923 \frac{rad}{sec}}\)
What is the equation for burning a fossil fuel
Answer:
Fuel + O2 → CO2 + H2O
Explanation:
1. A 500 g piece of silver at 250°C is submerged in 1000 g of water at 5°C to be cooled. Determine the
final temperature of the silver and water. Given Cwater = 4180 J/kg°C and Csilver = 240 J/kg°C.
Taking into account the definition of calorimetry, the final temperature of the silver and water is 11.84 °C.
CalorimetryCalorimetry is the measurement and calculation of the amounts of heat exchanged by a body or a system.
Sensible heat is defined as the amount of heat that a body absorbs or releases without any changes in its physical state (phase change).
So, the equation that allows to calculate heat exchanges is:
Q = c× m× ΔT
where:
Q is the heat exchanged by a body of mass m. c is the specific heat substance. ΔT is the temperature variation.Final temperature of the silver and waterIn this case, you know:
For silver:Mass of silver= 500 g= 0.5 kg (being 1000 g= 1 kg)Initial temperature of silver= 250 °CFinal temperature of silver= ?Specific heat of silver= 240 \(\frac{J}{kgC}\) For water:Mass of water = 1000 g= 1 kgInitial temperature of water= 5 ºCFinal temperature of water= ?Specific heat of water = 4180 \(\frac{J}{kgC}\)Replacing in the expression to calculate heat exchanges:
For silver: Qsilver= 240 \(\frac{J}{kgC}\)× 0.5 kg× (Final temperature of silver - 250 C)
For water: Qwater= 4180 \(\frac{J}{kgC}\) × 1 kg× (Final temperature of water - 5 C)
If two isolated bodies or systems exchange energy in the form of heat, the quantity received by one of them is equal to the quantity transferred by the other body. That is, the total energy exchanged remains constant, it is conserved.
Then, the heat that the silver gives up will be equal to the heat that the water receives. Therefore:
- Qsilver = + Qwater
And the final temperature of the silver is equal to the temperature of the water (Final temperature of silver= Final temperature of water= Final temperature). Then:
- 240 \(\frac{J}{kgC}\)× 0.5 kg× (Final temperature - 250 C)= 4180 \(\frac{J}{kgC}\) × 1 kg× (Final temperature - 5 C)
Solving:
- 120 \(\frac{J}{C}\)× (Final temperature - 250 C)= 4180 \(\frac{J}{C}\)× (Final temperature - 5 C)
120 \(\frac{J}{C}\)× (250 C - Final temperature) = 4180 \(\frac{J}{C}\)× (Final temperature - 5 C)
120 \(\frac{J}{C}\)×250 C - 120 \(\frac{J}{C}\)×Final temperature = 4180 \(\frac{J}{C}\)×Final temperature - 4180 \(\frac{J}{C}\)×5 C
30,000 J - 120 \(\frac{J}{C}\)×Final temperature = 4180 \(\frac{J}{C}\)×Final temperature - 20,900 J
50,900 J= 4300 \(\frac{J}{C}\)×Final temperature
50,900 J÷ 4300 \(\frac{J}{C}\)= Final temperature
11.84 °C= Final temperature
Finally, the final temperature of the silver and water is 11.84 °C.
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A pebble and a bowling ball would have zero weight in gravity-free space. If they were moving toward you with the same speed, would they have the same effect if they collided with your head? Explain your answer. PLEASE HELP
A massive and fast moving bowling ball must have a large momentum while a light and slow moving tennis ball must have a small momentum. However, a fast tennis ball may have the same momentum as a slow rolling bowling ball due to its high velocity. Given two objects of the same size but of different materials, the heavier (denser) object will fall faster because the drag and buoyancy forces will be the same for both, but the gravitational force will be greater for the heavier object.
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A geographic compass is used to tell the direction you are facing on the Earth. A compass has a movable needle in it that is a magnet with the north pole painted red. Where that red needle points is the direction north on the Earth. The needle moves because it interacts with the magnetic field of the Earth. Which of the following statements is the most true?
a
The needle must be a magnet with only one pole
b
The direction the needle points north switches when you change hemispheres
c
The geographic North Pole of the Earth is actually the magnetic South Pole
d
There must a current running through the compass needle for it to work
Question 2 (1 point)
Answer:Know the answer yet?
Explanation:
URGENT HELP
The electric motor in the car is powered by a battery.
To charge the battery, the car is plugged into the mains supply at 230 V
The power used to charge the battery is 6.9 kW
Calculate the current used to charge the battery.
Current = ?
Answer:
0.03 A
Explanation:
Answer:
30A
Explanation:
I (current)= p (power) / V (voltage)
I= 6.9*10^3 / 230
I= 30A
on aircraft carriers, catapults are used to accelerate jet aircraft to flight speeds in a short distance. one such catapult takes a 18,500-kg jet from 0 to 69 m/s in 2.9 s. (assume the catapult acts in the positive horizontal direction. indicate the direction with the sign of your answer where appropriate.)
Far does the jet go while accelerating = 95.2m and force catapult have to exert on jet is 4.42*105 N.
How far does the jet go while accelerating?(measured in metres)
Use the formula xf = xi + v0*t+(1/2)*a*t2 The initial velocity and location are both zero! xf = 0+0+(1/2) xf = (1/2)*(68 m/s - 0 m/s)*(1/2.8s)*(2.8s)2 = 95.2 m
How much force does the catapult have to exert on the jet?
(N) Because F = m*a and Force = mass*acceleration, F = (18,200 kg)*(68 m/s - 0 m/s)*(1/2.8s) = 4.42*105 N.
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A rocket is burning fuel at the rate of 300g/s and electing all the gas. In one direction of the rate of 500m/s what is maximum weight the rocket burn have if it going to move Vertically upward.
Correct option is D)
Overall momentum of the system is conserved.
Therefore, change in momentum of the rocket will be equal to that of the fuel.
Change in momentum of the fuel will be
Δmv=60000
Hence, change in momentum of the rocket will also be:
△P=60000
Thrust force F=
△t
△p
F=60000 N
Venus has an orbital period of 0.615 years and Mars has an orbital period of 1.88 years. How many orbits does Venus make for each Mars orbit?
Venus completes around 3 orbits for every orbit of Mars, given their respective orbital periods of 0.615 years and 1.88 years.
Venus and Mars have different orbital periods, with Venus completing one orbit around the Sun in approximately 0.615 years, while Mars takes about 1.88 years to complete its orbit. To determine the number of Venus orbits for each Mars orbit, we can divide the orbital period of Mars by that of Venus.
By dividing the orbital period of Mars (1.88 years) by the orbital period of Venus (0.615 years), we get approximately 3.06. This means that Venus completes about 3 orbits for each orbit of Mars.
Venus and Mars are both planets in our solar system, and each has its own unique orbital period, which is the time it takes for a planet to complete one orbit around the Sun. The orbital period of Venus is approximately 0.615 years, while the orbital period of Mars is about 1.88 years.
To determine the number of orbits Venus makes for each Mars orbit, we divide the orbital period of Mars by the orbital period of Venus. In this case, we divide 1.88 years (the orbital period of Mars) by 0.615 years (the orbital period of Venus).
The result of this division is approximately 3.06. This means that Venus completes approximately 3 orbits for every orbit that Mars completes. In other words, as Mars is completing one orbit around the Sun, Venus has already completed about 3 orbits.
This difference in orbital periods is due to the varying distances between the planets and the Sun. Venus orbits closer to the Sun than Mars, which results in a shorter orbital period for Venus compared to Mars.
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Match the biomes with the corresponding animals, vegetation, or geographic location.
forest at highest latitudes:
prairies/ temperate climate:
high humidity and rainfall/ near equator:
no trees/ polar bears/ mosses:
<25cm rain/ few animals:
mostly small mammals/ many scrubs/ steppes:
abundant thick vegetation/ many species:
hardwood trees/ deer, squirrel, foxes:
This is kinda confusing. I wish u just to a screenshot of the problem but here goes...
Forest at highest latitudes- Hardwood trees/deer, squirrel, foxes
Praries/temperate climate- Mostly small mammals/scrubs/steppes
High humidity/rainfall near equator- Abundant thick vegatation/manny species
No trees/ polar bears/ mosses- 25cm rain/few animals
When two objects collide, they experience the exact same amount of force in opposite directions.
O True
O False
Answer:
True
Explanation:
In a collision between two objects, both objects experience forces that are equal in magnitude and opposite in direction. Such forces often cause one object to speed up (gain momentum) and the other object to slow down (lose momentum).
which wave has a wave length that is most likely seen as red light
Answer:
Explanation:
Red light has longer waves, with wavelengths around 620 to 750 nm.
what is momentum?
what is period of an oscillating body?
what is friction?
Answer:
Explanation:
Momentum is the quantity of motion of a moving body, measured as a product of its mass and velocity.
The period of an oscillating body is the smallest interval of time in which a system undergoing oscillation returns to the state it was in at a time arbitrarily chosen as the beginning of the oscillation.
Friction is a force between two surfaces that are sliding, or trying to slide, across each other. Friction always slows a moving object down. The amount of friction depends on the materials from which the two surfaces are made. The rougher the surface, the more friction is produced.
20.0 l of a monatomic ideal gas at a pressure of 100 kpa expand adiabatically until the volume doubles. what is the pressure in the gas at that point?
The pressure in the gas at that point is equal to the initial pressure, 100 kPa.
To expand adiabatically, there must be no heat transfer involved. Adiabatic expansion means that no heat is transferred between the gas and its surroundings; this means that if we double the volume of our gas, nothing should change in terms of temperature as long as there is no heat transfer to or from our system during expansion.
Since we're starting out with a monatomic ideal gas, we know that its entropy is going to stay constant throughout this process, so the ideal gas law gives us a relationship between pressure, volume, and temperature: PV = nRT
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a ten-loop coil having an area of 0.23 m2 and a very large resistance is in a 0.047-t uniform magnetic field oriented so that the maximum flux goes through the coil. the coil is then rotated, so the flux goes to zero in 0.34 s. what is the magnitude of the emf induced in the coil during the 0.34 s?
The magnitude of electromotive force is 0.32 volts.
We need to know about the electromotive force of induction to solve this problem. The emf induction appears when there is any change in magnetic flux. The magnitude of emf can be determined by
ε = N dΦ / dt
where N is coil turns, ε is electromotive force, dΦ is change in magnetic flux and dt is time interval.
From the question above, the parameters given are
B = 0.047 T
dt = 0.34 s
N = 10
A = 0.23 m²
Find the change in magnetic flux
dΦ = (B . A)
dΦ = ( 0.047 . 0.23 )
dΦ = 0.01081 Tm²
By substituting the given parameters, we can calculate electromotive force
ε = N . dΦ / dt
ε = 10 . 0.01081 / 0.34
ε = 0.32 volt
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Un alumno menciona que al abrir la ventana de su casa sintió cómo el frío ingresaba a su cuerpo. Menciona cuál es la verdadera razón por la cual el niño tuvo la sensación de frío. *
a) Porque el aire tiene una temperatura menor que la de su cuerpo; por eso se propaga más rápido.
b) Porque la temperatura de su cuerpo, siente el aire frio que entra por la ventana.
c) Porque el calor de su cuerpo se propaga al medio ambiente, al ser la temperatura del niño mayor que la del aire exterior.
d) Porque la temperatura del aire es igual a la temperatura del cuerpo.
Answer:
My believe the answer is
A.) or B.)
Explanation:
Here is why I think A is the answer.
If we use the process of elimination, it would look like this,
a) Porque el aire tiene una temperatura menor que la de su cuerpo; por eso se propaga más rápido.
This makes sense because we all know in winter the weather is very cold and freezing.
b) Porque la temperatura de su cuerpo, siente el aire frio que entra por la ventana.
I feel like this answer is the question, but it could also be an answer, sorry, I'm a little uncertain.
c) Porque el calor de su cuerpo se propaga al medio ambiente, al ser la temperatura del niño mayor que la del aire exterior.
This answer has nothing to do with the question, plus it is very false, our body heat is not enough to overcome the very cold temperature from outside.
d) Porque la temperatura del aire es igual a la temperatura del cuerpo.
This is false because again our body heat is not even compared to the freezing cold temperatures from the winter.
Well, have a nice rest of the day!ba baiii!
which transition would result in the emission of a photon with the lowest frequency?
Answer:
The lowest energy is for n=4 to n=3 transition.
An electric circuit containing a dry cell and a torh bulb i completed by including a metal crew driver having a wooden handle explain why the bulb would not glow
An electric circuit containing a dry cell and a torch bulb is completed by including a metal screw driver having a wooden handle. The bulb does not glow as wood does not pass electricity through it.
An electric circuit conducting current is a closed path of wires and electrical components which allows current through them on the application of potential difference between two points in the path.
Materials are usually of two types, they are conductors and insulators. Insulators do not allow current to pass through them due to the arrangement of atoms in them.
Some of the examples of insulators are wood, plastic, stone, etc.
As wood is included in the circuit, the current is not continuous and breaks its flow at the point where wood id connected.
Thus, the bulb does not glow.
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