Using the conservation of momentum principle, the initial velocity of ball B before the collision is calculated to be -6.5 m/s given that the collision is perfectly inelastic and both balls come to rest after they stick together.
The problem describes a perfectly inelastic collision situation where ball A, with a mass of 5.0 kg and an initial velocity of 13 m/s, collides with ball B, which has twice the mass of ball A, and they stick together and come to rest. To find the initial velocity of ball B before the collision, we can use the conservation of momentum principle. The total momentum before the collision must equal the total momentum after the collision.
Let's denote the mass of ball A as mA and the mass of ball B as mB. The initial velocity of ball A is vA1 = 13 m/s, and let's denote the initial velocity of ball B as vB1. The mass of ball B is twice that of ball A, so mB = 2mA. Since the balls are at rest after the collision, their combined momentum is zero.
The momentum conservation equation can be written as:
mAvA1 + mBvB1 = 0
Substituting the given values and solving for vB1 we get:
(5.0 kg)(13 m/s) + (2 × 5.0 kg)vB1 = 0
65 kg×m/s + 10.0 kgvB1 = 0
vB1 = -(65 kg×m/s) / (10.0 kg)
vB1 = -6.5 m/s
Therefore, the initial velocity of ball B before the collision was -6.5 m/s, which corresponds to option B.
The 2779-m Brooklyn-Battery Tunnel, connecting Brooklyn and Manhattan, is one of the world's longest underwater vehicular tunnels. (a) Determine its fundamental frequency of vibration. (b) What harmonic must be excited so that it resonates in the audio region at 20 Hz or greater?
A sphere has surface area 1.25 m2, emissivity 1.0, and temperature 100.0°C. What is the rate at which it radiates heat into empty space? The Stefan-Boltzmann constant is 5.67 × 10-8 W/(m2 ∙ K4).
A.) 9.9 mW
B.) 3.7 W
C.) 7.1 W
D.) 1.4 kW
Select the correct answer. What is tan for the given triangle? 0.60 1.67 1.33 5.00 0.20
Which of the following utilize electromagnetic induction to operate?
generators in power plants
telephones
turbines
masonry
fireplaces
solar ovens
it multiple choose
The correct answer is option A and F, Generators in power plants and Solar ovens
Electromagnetic induction is the phenomena of generating electricity due to a changing magnetic field. In electric generators, a rotating coil (which acts as a conductor) is placed between the two magnets. As the coil rotates it induces electromotive force within the conductor. Like wise in case of solar oven , heating is caused due to the eddy currents produced with in the conductor placed with in a changing magnetic field.
Binary ionic compounds are: Check all that apply.
A.Compounds with very different electronegativities
B.Made from two metals
C.Compounds that share electrons
D.Metals and nonmetal ions
Compounds with very different electronegativities AND metals and non metals.
What is the average speed of a human that runs a distance of 5 miles in 1 hour?
A bullet is fired at a speed of 2434 ft/s. what is this speed expressed in millimeters per minute?
Which ions are most abundant in an acid?
The hydrogen ion is the most abundant in an acid for it is a bare proton that associates with any water in the molecule, solution or reaction so the H+ ions produced by an acid exist as H3O+ ions.
Moreover, in the Arrhenius theory, an acid is a substance that dissociates to produce H+ ions in solution and a base as a substance that dissociates to produce OH- ions in solution. Meanwhile, in the Bronsted-Lowery theory, an acid is considered as a proton donor.
Which Of The Following Are Part Of The Ten Essentials List?
A. Extra Clothes And Rain Gear
B. Umbrella
C. Sunscreen And Hat
D. First Aid Kit
E. Water Purifier
F. Sleeping Pad
the are A,C,D that is answer the don't forget to see more answer
Animals, including humans, need shelter, food, water, air, and space in order to survive. How do animals satisfy their basic needs?
if you come from study island then its all of them
Food, shelter and clothes are basic need of the humans. Animals like tiger hunt the animals in the jungle, some animals leaves on green grass which are abundantly present in the jungle. for shelter they live in the group at suitable place.
What is Animal ?Animals belong to the biological kingdom Animalia and are multicellular, eukaryotic creatures. Animals generally ingest organic matter, breathe oxygen, can reproduce sexually, and form from a hollow ball of cells called a blastula during early development. There are an estimated 7.77 million animal species in existence as of 2022, but only 2.16 million of them have been described, including 1.05 million insects, over 36,000 fish, over 11,700 reptiles, over 11,100 birds, and 6,596 mammals. Animals can be as little as 8.5 micrometres (0.00033 in) or as large as 33.6 metres (110 ft). They construct extensive food webs through their complex interactions with one another and their surroundings. Zoology is the study of animals from a scientific perspective.
To know more about animals :
https://brainly.com/question/12985710
#SPJ3.
Describe the image of an object that is 38 cm from a concave mirror that has a focal length of 10 cm.
A concave mirror with a focal length of 10 cm will form a virtual, upright image that is 11.43 cm away from the mirror. The magnification of the image will be -0.301.
Explanation:A concave mirror with a focal length of 10 cm will form an image of an object that is 38 cm away. To determine the characteristics of the image, we can use the mirror equation: 1/f = 1/di + 1/do, where f is the focal length, di is the image distance, and do is the object distance. Rearranging the equation, we get di = 1 / (1/f - 1/do). Plugging in the given values, di = 1 / (1/10 - 1/38) = 11.43 cm.
The negative sign indicates that the image is virtual and upright. Furthermore, to determine the magnification of the image, we can use the formula: magnification = -di / do. Plugging in the values, magnification = -11.43 / 38 = -0.301.
Learn more about Concave mirrors here:https://brainly.com/question/3555871
#SPJ11
every 24 hours, about how many hours are spent socializing and watching tv?
Answer:
16+ hours
Explanation:
because they have a job and jobs are long so they would take as much time as they can get
Which of the following would most likely happen if water did not form hydrogen bonds? (2 points)
Answer:
Water would not expand when it freezes
Explanation:
______________ is a measure of the force of gravity pulling on an object of a given mass.
How far away from the sun would a planet mercury's size have to be before it would have an atmosphere?
A 92-kg astronaut and a 2000-kg satellite are at rest relative to a space station. the astronaut pushes on the satellite, giving it a speed of 0.14 m/s directly away from the station. seven and a half seconds later the astronaut comes into contact with the station. part a what was the initial distance from the station to the astronaut?
Answer:
22.8 s
Explanation:
First we calculate the change in momentum of the satellite.
ΔP = 2000 kg (0.14 m/s 0 m/s) = 280 kg·m/s
The change in momentum of the satellite is equal to the change in momentum of the astronaut as a result of Newton's Third law. Therefore:
280 kg·m/s = 92kg * v
v = 3.04 m/s
d = speed * time = 3.04 m/s * 7.5 s = 22.8 m
You are given two carts, a and
b. they look identical and you are told that they are made of the same material. you place a at rest on an air track and give b a constant velocity directed to the right so that it collides elastically with
a. after the collision, both carts move to the right, the velocity of b being smaller than what it was before the collision. what do you conclude?
In the described collision, the momentum of cart B is partially transferred to cart A due to the conservation of momentum principle. Hence, cart A starts moving and cart B slows down but continues to move to the right.
Explanation:The scenario you described relates to the physics principle of conservation of momentum. In the collision of the carts, the total momentum before the collision equals the total momentum after the collision. This is because in an elastic collision, both kinetic energy and momentum are conserved. Initially, only cart B had momentum (since it was moving), and cart A was at rest. After the collision, both carts moved to the right, indicating that some of cart B's momentum was transferred to cart A. The fact that cart B moved slower after the collision indicates that it transferred some of its initial momentum to cart A. Hence, we can conclude that cart A gained momentum while cart B lost some but kept enough to continue moving to the right.
Learn more about Conservation of Momentum here:https://brainly.com/question/33316833
#SPJ3
Please help!! will mark brainiest and 60 pnts!!!
1) An items real value is
A) Equal to its price
B) Always greater than its perceived value
C) Equal to the cost of its production
D) An average of the price of competitor items
2) Bartering is an example of the exchange process at work.
A) True
B) False
3) The core of marketing is
A) Real value
B) Perceived value
C) Utility
D) Social media
4) Colligate football merchandise associated with colleges in the SEC (South Eastern Conference) are more popular in Alabama than in Oregon because of their
A) Time utility
B) Place utility
C) Form utility
D) Image utility
5) A consumer who is willing to pay more for a pre-assembled piece of furniture as opposed to a cheaper piece of furniture that has to be put together after purchase recognizes the item’s
A) Real value
B) Perceived value
C) Form utility
D) Possession utility
6) By marketing an item, sellers attempt to increase the real value of an item.
A) True
B) False
7) In modern-day society, the exchange process is primarily based on which of the following?
A) The bartering system
B) The honor system
C) The monetary system
D) The gold standard
8) All companies with a website use this online venue to directly sell their products to consumers.
A) True
B) False
9) In today’s society, some services and commodities can be successfully promoted via Internet marketing alone.
A) True
B) False
10) In marketing, an item’s utility refers to only how that product is used by the consumer.
A) True
B) False
1) C 2) A 3) C 4) B 5) C 6) A 7) C 8) A 9) A 10) B Is the answer
HELP!! Physical or chemical property? For the questions..
A long, straight, vertical wire carries a current upward. due east of this wire, in what direction does the magnetic field point? a long, straight, vertical wire carries a current upward. due east of this wire, in what direction does the magnetic field point? upward west north south downward east
The magnetic field is due east of a long, straight, vertical wire carrying a current upward points downward.
Explanation:The magnetic field created by a long, straight, vertical wire carrying a current upward can be determined using the right-hand rule. According to the right-hand rule, if you point your right thumb in the direction of the current in the wire, your fingers will curl in the direction of the magnetic field.
Since the wire is carrying current upward, the magnetic field will point in the clockwise direction when viewed from above. Therefore, the magnetic field due east of the wire will point downward.
A body 'A' of mass 1.5kg travelling along the positive X-axis with speed of 4.5m/s collides with another body 'B' of mass 3.2kg, which initially is at rest as a result of the collision, 'A' is deflected and moves in a speed of 2.1m/s in a direction which is at an angle of 30 degree below the X-axis. 'B' is set in motion at an angle Φ above the X-axis. calculate the velocity of 'B' after the collision.
At the end of a factory production line, boxes start from rest and slide down a 30 ∘ ramp 5.8 m long. part a if the slide is to take no more than 3.9 s , what's the maximum allowed frictional coefficient
A transverse wave on a rope is given by y(x,t)= (0.750cm)cos(π[(0.400cm−1)x+(250s−1)t]). part a part complete find the amplitude.
The amplitude of the given transverse wave in the rope is [tex]\boxed{0.750\,{\text{cm}}}[/tex].
Further Explanation:
The given expression of the wave developed in the rope is.
[tex]y\left( {x,t} \right) = \left( {0.750\,{\text{cm}}} \right)\cos \left( {\pi \left[ {\left( {0.400\,{\text{cm}} - {\text{1}}} \right)x + \left( {250\,{\text{s}} - 1} \right)t} \right]} \right)[/tex]
The standard equation of the wave produced in a rope is given as.
[tex]\boxed{y\left( {x,t} \right) = A\cos \left( {kx + \omega t} \right)}[/tex]
Here, [tex]y[/tex] is the position of the wave, [tex]A[/tex] is the amplitude of the wave, [tex]k[/tex] is the wave number and [tex]\omega[/tex] is the angular frequency of the wave.
On comparing the above equation of the wave with the standard equation of the wave produced in a rope, the amplitude of the wave can be obtained as follows.
[tex]A = 0.750\,{\text{cm}}[/tex]
Thus, the amplitude of the given transverse wave in the rope is [tex]\boxed{0.750\,{\text{cm}}}[/tex].
Learn More:
A remote-controlled car is moving in a vacant parking lot. The velocity of the car as a function of time is given by https://brainly.com/question/2005478 A particle of mass m=5.00 kilograms is at rest at t=0.00 seconds. A varying force f(t)=6.00t2−4.00t+3.00 is acting on the particle between https://brainly.com/question/6252219 You see condensed steam expelled from a ship’s whistle 2 s before you hear the sound. What is the air temperature if you are 700 m from https://brainly.com/question/10435778
Answer Details:
Grade: High School
Chapter: Waves
Subject: Physics
Keywords: Transverse, wave, amplitude, angular frequency, stationary wave, rope, velocity, position, wave number.
Sam boards a ski lift, and rides up the mountain at 6 miles per hour. once at the top, sam immediately begins skiing down the mountain, averaging 54 miles per hour, and does not stop until reaching the entrance to the lift. the whole trip, up and down, takes 40 minutes. assuming the trips up and down cover the same distance, how many miles long is the trip down the
Assume the second cart moves in the negative direction. two carts with masses of 4.6 kg and 3.3 kg move toward each other on a frictionless track with speeds of 5.1 m/s and 4.9 m/s, respectively. the carts stick together after colliding head-on. find their final speed. answer in units of m/s.
Which arrow best represents the path of an object with projectile motion?
Answer:
C
Explanation:
Projectiles follow a parabolic path and I got it right on the quiz
Answer:
C
Explanation:
it takes 1.0h to drive 20km through a city during rush hour your (Blank) speed is 20km/h
Final answer:
The question involves calculating average speed by dividing distance traveled by time of travel. In the example, for a 20 km drive taking 1.0 hour, the average speed is 20 km/h. Another scenario provided explains how to convert average speed to different units given a trip from school to home.
Explanation:
The question asks about calculating average speed during a trip, which can be determined by dividing the total distance traveled by the total time of travel. In the given scenario, the student has a 1.0 hour trip to cover 20 km, which correctly yields an average speed of 20 km/h. To calculate average speed, you simply use the formula:
Average speed = Total distance / Total time
For a more detailed example, if you drive 10.0 km from your school to home in 20.0 minutes, it's necessary to convert minutes to hours by dividing by 60. You would then calculate the average speed in kilometers per hour (km/h) and convert the result to meters per second (m/s), if needed, using the appropriate conversion factors (1 km = 1000 m and 1 hr = 3600 seconds).
Because there is very little friction, the lever is an extremely efficient simple machine. using a 90.0% efficient lever, what input work is required to lift a(n) 19.0 kg mass through a distance of 45 cm? 3232 incorrect: your answer is incorrect. seenkey 93.2 j
Answer:
Input work: 93.2 J
Explanation:
The work efficiency formula is:
efficiency = output work/ input work
Solving for input work:
input work = output work/efficiency
The work required to lift an object is computed as follows:
Output work = mass * gravity * height
Using mass in kg, gravity in m/(s^2) and height in m; then work is expressed in Joules. Combining the equations and replacing with data, we get (units are omitted):
input work = 19*9.81*0.45/0.9 = 93.2 J
Note that 45 cm is equivalent to 0.45 m
As a moon follows its orbit around a planet, the maximum grav- itational force exerted on the moon by the planet exceeds the minimum gravitational force by 11%. find the ratio rmax/rmin, where rmax is the moon's maximum distance from the center of the planet and rmin is the minimum distance.
Calculate the kinetic energy of an 86-kg scooter moving at 16 m/s
The kinetic energy of an 86 - kilogram scooter moving at 16 m / s would be 11008 Joules.
What is mechanical energy?Mechanical energy is the combination of all the energy in motion represented by total kinetic energy and the total stored energy in the system which is represented by total potential energy.
As given in the problem, we have to calculate the kinetic energy of an 86 - kilogram scooter moving at 16 m / s ,
The mass of the scooter = 86 kilogram
The velocity fo the scooter = 16 meters per second
The kinetic energy of the scooter = 0.5 × m × v²
= 0.5 × 86 × 16²
= 11008 Joules
Thus , the kinetic energy of an 86 - kilogram scooter moving at 16 m / s would be 11008 Joules .
To learn more about mechanical energy , refer to the link ;
brainly.com/question/12319302
#SPJ5
The kinetic energy of an 86-kg scooter moving at 16 m/s is calculated using the formula KE = ½ mv², resulting in 10,976 Joules or 10.976 kJ of kinetic energy.
To calculate the kinetic energy of an 86-kg scooter moving at 16 m/s, you can use the kinetic energy formula KE = ½ mv², where m is mass and v is velocity. Substituting the given values, we get KE = ½ (86 kg) (16 m/s)². After performing the calculation, the kinetic energy of the scooter is found to be 10,976 Joules or 10.976 kJ.