One object is at rest, and another is moving. The two collide in a one-dimensional, completely inelastic collision. In other words, they stick together after the collision and move off with a common velocity. Momentum is conserved. The speed of the object that is moving initially is 25 m/s. The masses of the two objects are 3.0 and 8.0 kg. Determine the final speed of the two-object system after the collision for the case when the large-mass object is the one moving initially and the case when the small-mass object is the one moving initially.
Large object moving, small object at rest:
v = 18.18m/s
Small object moving, large object rest:
v= 6.81m/s
Explanation:
p = mv
m1•Vi1 + m2•Vi2 = m1•Vf1 + m2•Vf2
First Scenario (large object moving):
For small object,
p=mv
p= 3kg • 0 = 0
For large object,
p= mv
p= 8kg • 25m/s = 200kg•m/s
Combined,
p1+p2 (small object + large object) = 200m/s
After the collision, there is one mass,
new mass is 8kg + 3kg = 11kg
So now , p = mv again. In this case
200m/s = (11kg)•v
v = (200kg•m/s)/(11kg) = 18.18 m/s
Second Scenario (small object moving):
p1v1 = 3kg•25m/s = 75kg•m/s
p2v2 = 8kg•0 = 0
p1v1 + p2v2 = 75kg•m/s
New mass = 8kg+ 3kg = 11kg
p = mv
75kg•m/s = 11kg•v
v = (75kg•m/s)/11kg = 6.81m/s
2. A 4.0 kg magnetic toy car traveling at 3.0 m/s east collides and sticks to a 5.0 kg toy magnetic car also traveling at 2.0 m/s east. Calculate the final speed and direction of the magnetic car (coupled) system?
Answer:
2.44 m/s due East
Explanation:
From the question given above, the following data were obtained:
Mass of 1st car (m₁) = 4 Kg
Velocity of 1st car (u₁) = 3 m/s
Mass of 2nd car (m₂) = 5 Kg
Velocity of 2nd car (u₂) = 2 m/s
Final velocity (v) =?
The final velocity can be obtained as follow:
v(m₁ + m₂) = m₁u₁ + m₂u₂
v(4 + 5) = (4×3) + (5×2)
9v = 12 + 10
9v = 22
Divide both side by 9
v = 22/9
v = 2.44 m/s
Thus, the final velocity is 2.44 m/s.
Since both cars was moving due East before collision, and after collision, they stick together, then their direction will be due East.
1. In a demonstration, Mr. K stretches a steel wire to a length 1.23 meters and braces both ends so that they are not free to vibrate. He attaches a fancy piece of equipment which he calls a mechanical oscillator to the wire and explains how it works. Then Mr. K turns the oscillator on and tunes the frequency to 588 Hz. To the amazement of the class, the wire begins vibrating in the sixth harmonic wave pattern. a. Determine the speed of waves within the wire. b. Determine the frequency at which the wire will vibrate with the first harmonic wave pattern. c. Determine the frequency at which the wire will vibrate with the second harmonic wave pattern.
Answer:
a.241.08 m/s b. 196 Hz c. 392 Hz
Explanation:
a. Determine the speed of waves within the wire.
The frequency of oscillation of the wave in the string, f = nv/2L where n = harmonic number, v = speed of wave in string, L = length of string = 1.23 m.
Since f = 588 Hz which is the 6 th harmonic, n = 6. So, making v subject of the formula, we have
v = 2Lf/n
substituting the values of the variables into v. we have
v = 2 × 1.23 m × 588Hz/6
v = 241.08 m/s
b. Determine the frequency at which the wire will vibrate with the first harmonic wave pattern.
The first harmonic is obtained from f when n = 1,
So, f = v/2L = 241.08 m/s ÷ 1.23m = 196 Hz
c. Determine the frequency at which the wire will vibrate with the second harmonic wave pattern.
The second harmonic f' = 2f = 2 × 196 Hz = 392 Hz
Which choice best describes how scientists learn new information during investigations?
A. During investigations, scientists learn new information, ask questions, and then make observations.
B. During investigations, scientists make observations, use their observations to ask questions, and learn new information.
C. During investigations, scientists make measurements, collect and record information, ask a question, and then make observations.
During investigations, scientists collect and record data and then make observations.
Answer:
C
Explanation:
During investigations a scientist needs to observe, investigate, collect data and put together the information they collect.
A student drops a feather and rock at the same time from Mrs. Taylor's
window. If air resistance wasn't a factor, what should she observe? *
Answer:the rock is heaver and gravity pulls it down while the feather floats for a while and then reaches the ground
Explanation:i dont know if this is the right answer or not
Photosynthesis occurs in a plant cell's
Cellular respiration occurs in a plant or animal cell's
Answer:
Photosynthesis occurs in the organelle, chloroplast .
Cellular respiration occurs in a plants or animals mitochondria.
Explanation:
Hope this helps! :)
Object A represents fixed negatively charged particle and Object B represents fixed. positively-charged particle. Object ( shows a
moving positively charged particle. Identify which arrow would correctly show the force of attraction or repulsion on object C caused
by the other two objects?
Answer:
Moving electrons by cringing the object near another charged object ... This means that there is a different number of protons and electrons ... the attraction or repulsive electrostatic force between positive and negative charges ... the amount of charge on the particle and the distance between the particles ... fixed in position.ation:
An object falls from a height of 12m. The object's potential energy at the top is 50J. Where is the potential energy of the object
25J
Answer:
the height of the is 6 m.
Explanation:
Given;
potential energy of the object, P.E = 50 J
Height of fall of the object, H = 12 m
Determine the mass of the object, m
P.E = mgh
m = (P.E) / (gh)
m = (50) / (9.8 x 12)
m = 0.425 kg
Let the height of the object at 25 J = h₂
mgh₂ = 25
h₂ = (25) / (mg)
h₂ = (25) / (0.425 x 9.8)
h₂ = 6 m
Therefore, the height of the object at 25 J is 6 m.
An experiment is designed to investigate the relation between the pressure and temperature in a tank that has a constant volume and mass. (The equation of state for air is pV=m R T, where p is the pressure, V is volume, m is mass, R is the gas constant, and T is the temperature.) A polynomial relation was suggested for the relation between p and T. You noticed that as you increase the order of the polynomial the error between the curve fit and the measured data decreases. What polynomial order is best to use
Answer:
3rd order polynomial
Explanation:
Given that the increase in the order of the polynomial the error between the curve fit and measured data will decreases hence :
The polynomial order that is best to use is the 3rd order polynomial, this is because using a 3rd order polynomial will produce a less variance and a low Bias
PLEASE HELP ME THIS IS VERY IMPORTANT!!!!!!!!!!!!! 20 points and I will give brainlyest
The diagram below shows a portion of the rock cycle.
Diagram of the rock cycle including 4 boxes labeled A, B, C, and D. There is an arrow labeled burial cementation extending from underwater sediment to box A. There is an arrow labeled deep burial, heating and pressure extending from underwater sediment to box B. There is an arrow labeled melting connecting box B to box D. There is an arrow labeled slow crystallization connecting box D to box C.
At what location in the diagram is granite most likely formed? (4 points)
Group of answer choices
Location A
Location B
Location C
Location D
Answer: I believe it’s location D. Or whichever is the location of slow crystallization.
Explanation: Slow crystallization of magma forms granite. Hope this helps. :)
Answer:
D
Explanation:
Look at the diagram of a solar eclipse.
A solar eclipse with labels 1 through 4. 1: The moon. 2: A location on Earth directly in line with the center of the Sun and Moon. 3: A location above 2. 4: A location below and right of 2.
At which location is the solar eclipse viewed in totality?
1
2
3
4
Answer:
at location 4
Explanation:
it is because the solar eclipse happens when the moon is covering the sun
You are on a road trip. You drive 80
miles in 1.5 hours. Then you take a
lunch break for 30 minutes. You then
continue 140 miles for 2 hours. What is
your average speed for the trip?
Answer:
Jsdiwkwdmxxj we
Explanation:
hcndjnjwidjxnwnjwi
HELPP ME IN PHYSICS +15 POINTS!!
But a right answer not links or I’ll report. -_-
The answer shud be 31 . 14m
Helppppp!!!!!!!!!!!!!! It's due Today!!!!!!!!!!!! NO LINK PLEASE!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
It means that if force is constant, as mass is increased, acceleration decreases. resistance to changes in motion (also known as INERTIA.) ... If the net force on an object is doubled, its acceleration will double If the mass of an object is doubled, the acceleration will be halved
Explanation:
Help please hurry! ‼️‼️‼️‼️‼️‼️‼️‼️‼️‼️‼️‼️‼️‼️
which of the following power plants does not use thermal energy to produce electricity?
a) fossil fuel power plant
b) nuclear power plant
c) geothermal power plant
d) hydroelectric power plant
Answer: d
Explanation:
A roller coaster goes from 10 m/s to 30 m/s in 5 seconds. What is it's acceleration?
Vf-Vi/T
1.
Which type of tide would result from this arrangement of the Sun, Moon and Earth? ________
2. How are Spring Tides different from Neap Tides? Give at least 2 reasons ________
3. Which phase of the moon comes after the one shown in the diagram below? _______
4. Which type of tides has very large high tides and very small low tides? _________
5. Which of these models shows the position of the sun moon and Earth that will have the
LARGEST effect on the tides? _________
the first picture is for number 1
the second on is for 3
the third is for 5
Please do this for everyone that needs it
Answer:
1. High Tide
2. I don't know
3. Waning Crescent
4. Spring Tides
5. I don't know
Explanation:
Answer:
1.neap tide
2.spring tides occur when the earth and the sun are in line with the new or full moon
3.first quarter
4.spring tides
5. its the diagram G
Explanation:
A car traveled 210 km in 1.5 hrs, what was the car's average speed?
Answer:
140km/h
Explanation:
Average speed= Distance/Time
= 210/1.5
= 140 I'm/h
heathers uncle has HIV/Aids .after visiting ,heathers uncle kisses her good bye on the cheek. Should heather and her uncle be concerned about HIV transmission ?
Answer:
no
Explanation:
HIV transmits only during fluid interaction, only if she Heather had an cut exposing the inner skin then HIV can be transmitted
How are magnetic field line
models helpful?
Answer:
Explanation:
En física, las líneas de campo son una ayuda para visualizar un campo electrostático, magnético o cualquier otro campo vectorial estático
List 4 forms of energy
Answer:
Chemical energy is energy stored in the bonds of atoms and molecules. ...
Mechanical energy is energy stored in objects by tension. ...
Nuclear energy is energy stored in the nucleus of an atom—the energy that holds the nucleus together. ...
Gravitational energy is energy stored in an object's height.
Answer:
Nuclear power
Electricity
Mechanic
Gravity
Explanation:
A 10 ohms resistor, 10 mh inductor, and 10micro farad capacitor are connected in series with a 10khz voltage source. The rms current through the circuit is 0.20A. Find the rms voltage drop across each of the three elements
Answer:
126 V
Explanation:
The computation of the rms voltage is shown below:
= I × R
=(.2) × (10)
= 2 V voltage drop across capacitor
= I × 1 ÷ (?C)
= I ÷ (2 × pi × f × C)
= (.2) ÷ (2 × pi × 10,000 × 10 × 10^-6)
= .318 V voltage drop across inductor
= I × ?L
= I × 2 × pi × f × L
= .2 × 2 × pi × 10,000 × .010
= 126 V
The Pacific Plate is moving 29 mm/year toward the north and 20 mm/year toward the west relative to the North American Plate. Show how to use geometry and the Pythagorean Theorem to calculate the total relative motion toward the northwest.
Answer:
7 mm per year
Explanation:
It is given that :
The Pacific plate is moving towards north at = 29 mm per year
The Pacific plate is moving towards west at = 20 mm per year
We have to calculate the total relative motion towards the northwest.
So we have to find the resultant of the two motions.
Since the two movements are perpendicular, therefore the angle between the two motions is 90 degree.
Therefore, finding their resultant,
[tex]R^2=(29)^2+(20)^2[/tex]
[tex]R^2=(49)^2[/tex]
R = 7
Therefore, total relative motion towards the northwest is 7 mm per year.
1.A motorcycle’s velocity at the top of the hill is 11.0 m/s. 4.0 seconds later it reaches the bottom of the hill with a velocity of 20.0 m/s. What is the acceleration of the motorcycle?
2.A motorcycle’s velocity at the top of the hill is 11.0 m/s. 4.0 seconds later it reaches the bottom of the hill with a velocity of 20.0 m/s. What is the acceleration of the motorcycle?
Answer:
1) as far as I remember
Let's take 20 as vf (final velocity) and 11 as (initial velocity) and 4 as time
So we would use this formula a=vf-vi/t
So 20-11/4
Asnwer 2.25
what is resistance to motion called?
Answer:
it's friction
Explanation:
100% sure about that
Use the information to answer the following question.
Hot air balloons use a flame that can turn on and off to heat air inside a large balloon. The balloon is attached to a basket which can carry people or cargo as it is lifted off the ground and floats in the air.
Using what you know about gases, predict which approach would allow the hot air balloon to reach the highest height?
A.
Turn on the flame for 10 seconds each minute for 10 minutes to increase the density of the air inside the balloon.
B.
Turn on the flame for 10 seconds each minute for 2 minutes, and cut a large hole in the balloon material to allow excess air out.
C.
Turn on the flame for 30 seconds each minute for 2 minutes, and cut a large hole in the balloon material to allow excess air out.
D.
Turn on the flame for 30 seconds each minute for 10 minutes to decrease the density of the air inside the balloon.
Answer:
The answer is B. :)
Explanation:
The hot air balloon reaches the highest height turn on the flame for 10 seconds each minute for 2 minutes and cut a large hole in the balloon material to allow excess air out.
What is a hot air balloon?Because hot air rises, hot air balloons work. By using the burner to heat the air inside the balloon, it becomes lighter than the cooler air on the outside.
As a result, the balloon floats upwards, as if it were in the water. Obviously, allowing the air to cool causes the balloon to slowly deflate.
Hot air balloons use a flame that can turn on and off to heat air inside a large balloon. The balloon is attached to a basket that can carry people or cargo as it is lifted off the ground and floats in the air.
Turn on the flame for 10 seconds each minute for 2 minutes, and cut a large hole in the balloon material to allow excess air out.
Hence the hot air balloon reaches the highest height turn on the flame for 10 seconds each minute for 2 minutes and cut a large hole in the balloon material to allow excess air out.
To learn more about the hot air balloon refer to the link;
https://brainly.com/question/11178349
An object that looks white when exposed to sunlight reflects all colors of light. What
does a white object look like when it is exposed to blue light?
JeLysa Hanson, a 41-year-old female, presents to the ED complaining of shortness of breath and tightness in her ches
examination, she is discharged with a diagnosis of musculoskeletal pain due to overexertion while practicing her new
her backyard
Be sure to list the codes, one code per box, in the correct order, from top to bottom. Capitalization, punctuation, and sp
impact whether or not your answer is correct. Follow coding best practices.
What is/are the correct diagnosis code(s)?
Solution :
It is given that JeLysa Hanson went for a medical examination complaining shortness of breath and tightness in her chest. After the medical examination, she was diagnosed of a musculoskeletal pain that was due to the overexertion while practicing her new hobby of boxing.
Therefore the codes of her examinations are :
ICD Code :
[tex]$R06.02$[/tex] = shortness of breath
[tex]$R07.89$[/tex] = chest pain or chest tightness
[tex]$M79.1$[/tex] = musculoskeletal pain
[tex]$X50.3XXS$[/tex] = overexertion due to the repetitive body movement
How many protons does Silicone have
A.2
B.14
C.28
D.28.08
Answer:
14
Explanation:
the left top is protons
hope this helps :)