during a snowball fight, two balls with masses 0.4 and 0.6 kg collide head on and form a single mass. each snowball had an initial velocity of 15 m/s. what is the speed of the mass, immediately after collision?
Answers
During a snowball fight, two balls with masses 0.4 kg and 0.6 kg collide head on and form a single mass. Each snowball had an initial velocity of 15 m/s. The speed of the mass, immediately after collision, can be calculated using the Law of Conservation of Momentum.
The Law of Conservation of Momentum states that when two objects collide in an isolated system, the momentum of the system remains constant.. This can be expressed mathematically as: p1 + p2 = p3, where p1 and p2 are the momentums of the two objects before the collision and p3 is the momentum of the combined mass after the collision.
In this case, the momentums of the two objects before the collision are:
p1 = 0.4 kg × 15 m/s = 6 kg · m/s
p2 = 0.6 kg × 15 m/s = 9 kg · m/s
Since the total momentum after the collision is equal to the sum of the momentums before the collision, we can calculate the momentum of the combined mass after the collision, p3, as follows:
p3 = p1 + p2
p3 = 6 kg · m/s + 9 kg · m/s
p3 = 15 kg · m/s
The mass of the combined object is 1 kg, since the masses of the two objects add up to 1 kg. We can now use this to calculate the speed of the combined object after the collision:
Speed = Momentum/Mass
Speed = 15 kg · m/s/1 kg
Speed = 15 m/s
Therefore, the speed of the mass immediately after the collision is 15 m/s.
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Related Questions
HELP PLS 100 POINTS TAKING TEST RN
WHEN you look at the speedometer in a moving car, you can see the car's.
A.instantaneous speed.
B.average speed.
C.instantaneous acceleration.
D.average acceleration.
E.average distance traveled.?
Answers
Answer:
I think he answer is C but I could be wrong
Explanation:
brainliest plz
Answer:
d mark brainlyest
Explanation:
classifies wildlife around a geothermal plant
conducts environmental impact studies of geothermal plants
analyzes the distribution and movement of water at a geothermal plant site
Which goes where?
bachelor's degree
doctorate degree
master's degree
Answers
Answer: what happed to you ?
Explanation:
when two vehicles collide, momentum is conserved _______.
Answers
The impact maintains momentum. Any contact between two objects that takes place in an isolated system preserves momentum.
What does momentum represent in actual life?Mass in motion is the definition of momentum. All objects have mass, thus if an object is moving, it has momentum and its mass is in motion. How much and how quickly something is moving affect how much momentum it has.
In one sentence, what is momentum?We gauge the motion of mass using momentum. Any thing in motion will have momentum. The object's momentum is determined by its mass multiplied by its velocity, according to the laws of physics. The mass and velocity of the parameters both have an impact on momentum.
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I need help with some graph.
Which graph shows acceleration?
Answers
Answer:
The first graph
Explanation:
Graph A shows acceleration.
I just know
Only the smartest person in science can help me right now...
1. Use the given soil triangle. What percentage of sand does loam have?
2. Use the given soil triangle. What percentage of silt does loam have?
3. Use the given soil triangle. Look for the letter B in Sandy Clay Loam. What percentage of clay does "B" have?
4. Use the given soil triangle. Look for the letter B in Sandy Clay Loam. What percentage of silt does "B" have?
Answers
Answer:
Loam is 40% sand, 40% silt, and 20% clay
Explanation:
When a person is standing upright, the weight of anything being lifted and carried in the hands is first reflected onto the:
Answers
Pelvic girdle
In human anatomy, the pelvis is a complex of bones that connects the trunk and the legs, supports and balances the trunk, and houses and supports the intestines, the urinary bladder, and the internal organ. It is sometimes referred to as the bony pelvis or the pelvic girdle.
One is located on the left side of the body and the other is located on the right. They come together to make the pelvic girdle, a portion of the pelvis. The hip bones are attached to the upper portion of the skeleton at the sacrum.
The pelvic girdle's main function is to support the upper body's weight while seated and transfer that weight to the lower limbs while standing. For the muscles in the trunk and lower limbs, it functions as attachment point.
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Is the daughter or the science teacher correct? And why?
Answers
Answer:
The daughter. I can't really explain but practically, it happens as the daughter has stated.
Convection currents form when warm air rises and cold air sinks. What causes the warm air to rise and the cold air to sink? A. chemical energy B. activation energy O C. a difference in density D. the law of conservation
Answers
the answer is C difference in density because hot air is less dense than cold air so hot air will rise and cold air will fall.
Answer:
a difference in density
Explanation:
Density measures the amount of mass (the number of particles) in a specific volume.
Since the molecules in warm air are spread farther apart than the molecules in cold air, there are fewer air particles per unit volume in warm air than in cold air. This means that warm air is less dense than cold air, and it will rise.
So, warm air rises and cold air sinks because of a difference in density.
A man supports himself and the uniform horizontal beam pulling the rope with a force T.The weights of men and the beam are 883 N and 245 N respectively.Calculate the tension T in the rope and the forces exerted by the pin at A.
Answers
Answer:
T=502.5N
Ax=171.8N
Explanation:
The computation of the tension T in the rope and the forces exerted by the pin at A is shown below:
vertical forces sum = Ay + Tsin20 + T - 245 - 883 = 0
Now
horizontal forces sum = Ax - Tcos70
Now Moment about B
-Ay × 4.8 + 245 × 2.4 + 883 × 1.8=0
Ay=453.6N
Now substitute in sum of vertical forces T=502.5N
Ax=171.8N
a. The tension (T) in the rope is equal to 502.51 Newton.
b. The forces exerted by the pin at A is equal to 171.86 Newton.
Given the following data:
Weight of men = 883 N Weight of beam = 245 NTo calculate the tension (T) in the rope and the forces exerted by the pin at A:
First of all, we would determine the vertical force by taking moment about point B as shown in the diagram.
\(-A_y \times 4.8 + 883 \times 1.8 + 245 \times 2.4 =0\\\\-4.8A_y + 1589.4 + 588 =0\\\\4.8A_y= 3237\\\\A_y=\frac{2177.4}{4.8} \\\\A_y= 453.63 \;Netwon\)
The tension (T) in the rope would be calculated by the sum of the vertical component of forces, which is given by:
\(\sum F_x = A_y + Tsin20 + T - 245 - 883 = 0\\\\453.63 + 0.3420T + T -1128=0\\\\1.3420T = 1128-453.63\\\\1.3420T =674.37\\\\T =\frac{674.37}{1.3420}\)
Tension, T = 502.51 Newton.
To find the forces exerted by the pin at A, we sum the vertical component of forces, which is given by:
\(\sum F_y = A_x - Tcos70 =0\\\\A_x =Tcos70\\\\A_x = 502.51 \times cos70\\\\A_x = 502.51 \times 0.3420\\\\A_x = 171.86\;Newton\)
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explain any two effects of refraction of light experienced by you
Answers
Answer:
1) during monsoon light passing through the water surface refracts causing the formation of rainbow.
2) a swimming pool looks more shallower than it actually is because the light coming from the bottom of the pool bends when it comes out at the surface due to refraction of light.
Answer:
1) during monsoon light passing through the water surface refracts causing the formation of rainbow.
2) a swimming pool looks more shallower than it actually is because the light coming from the bottom of the pool bends when it comes out at the surface due to refraction of light.
Explanation:
How can Newton’s Laws be used to explain how and why things move?
Answers
Answer:Newton used these laws to explain and explore the motion of physical objects and systems, Newton's three laws are: If an object experiences no net force, its velocity will remain constant. The object is either at rest and the velocity is zero or it moves in a straight line with a constant speed.
Explanation:
What role do electromagnets play in making a motor spin?
Answers
Answer:
I'm going to try to explain it to you easy as possible so basically when a motor is placed between two poles of another magnet a current from a voltage flow to the coil and a magnet field is produced around the electromagnetic and the poles of the magnet interact with the poles from the electricmatic causing the motor to turn in more coils growing stronger into the motor
If the area of A1=0.005m^2 and the area A2=0.10m^2, external input force F1=100N. Calculate the output force F2.
Answers
Answer:
\(F_2 = 2000N\)
Explanation:
Given
\(A_1 = 0.005m^2\)
\(A_2 = 0.010m^2\)
\(F_1 = 100N\)
Required
Calculate \(F_2\)
The solution to this question is Pascal's principle of pressure
Pressure is calculated using:
\(Pressure (P) = \frac{Force(F)}{Area(A)}\)
For the input force:
\(P_1 = \frac{F_1}{A_1}\)
Substitute values for F1 and A1
\(P_1 = \frac{100}{0.005}\)
\(P_1 = 20000\)
For the input force:
\(P_2 = \frac{F_2}{A_2}\)
Substitute value for A2
\(P_2 = \frac{F_2}{0.10}\)
The pressure in the system is constant.
So:
\(P_1 = P_2 = 20000\)
Substitute 20000 for P2
\(20000 = \frac{F_2}{0.10}\)
Make F2 the subject
\(F_2 = 20000 * 0.10\)
\(F_2 = 2000N\)
Hence, the output force is 2000N
Which is NOT an example of matter?
Group of answer choices
whisper
cloud
air
apple
Answers
Answer:
whisper is not a Matter its a sound
Answer:
Whisper
Explanation:
A whisper is not made of a substance, it is simply a sound. A cloud is mad of particles, making it matter. Same for air and an apple. Hope this helps you.
use the inner product in the vector space of continuous functions on the domain to find the orthogonal projection of onto the subspace spanned by and . (caution: and do not form an orthogonal basis of .)
Answers
To use the inner product in the vector space of continuous functions on the given domain to find the orthogonal projection of a given function onto the subspace spanned by two other functions, which do not form an orthogonal basis of the space.
To do this, we first need to find an orthogonal basis for the subspace spanned by the two given functions. We can use the Gram-Schmidt process to find an orthogonal basis, which involves finding the projection of one function onto the other and subtracting it from the original function, then normalizing the resulting vector.
Once we have an orthogonal basis for the subspace, we can use the formula for orthogonal projection to find the projection of the given function onto the subspace. This formula involves taking the inner product of the given function with each vector in the orthogonal basis, then multiplying each inner product by the corresponding vector and summing the results.
Overall, the explanation for finding the orthogonal projection of a function onto a subspace in the vector space of continuous functions involves finding an orthogonal basis for the subspace using the Gram-Schmidt process and using the formula for orthogonal projection to calculate the projection of the given function onto the subspace.
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4 meters south + 3 meters North =
Answers
Answer:
Your position would be -1
Explanation:
I think that's the answer you would need to collaborate more so i can give you a clear answer.
A fully charged parallel-plate capacitor remain connected to a battery while a dielectric i lid between the plate. Do the following quantitie increae, decreae, or tay the ame? (a) C (b) Q (c) E between the plate (d) DV (e) energy tored in the capacitor
Answers
Dielectrics are substances that prevent the flow of current.
What do you meant by Dielectrics?They are most frequently used for energy storage in capacitors and to build radio frequency transmission lines because of their capacity to store charges. To enhance the performance of semiconductors, high-permittivity dielectric materials are frequently utilised.
They are most frequently used for energy storage in capacitors and to build radio frequency transmission lines because of their capacity to store charges.
To enhance the performance of semiconductors, high-permittivity dielectric materials are frequently utilised. a material that is dielectric, insulating, or an extremely bad conductor of electrical current. A substance that is an electrical insulator is known as a dielectric material.
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Other than temperature, which property also has an effect on the rates of chemical reactions?
A.Color of reactants
B.Concentration of reactants
C.Solubility of reactants
D.Volume of reactants
Answers
Other than temperature, the property that also has an effect on the rates of chemical reactions is the concentration of the reactants. The correct answer is B
The rate of chemical reaction means how chemical react with respect to time or as a function of time. The rate of chemical reaction tells us the speed or how fast chemicals react.
There are many factors that can affect the rate of chemical reaction. Temperature is one of them. Increase in temperature will increase the rate at which chemical react.
The color of reactants, solubility of reactants and volume of reactants have nothing to do with the rate of chemical reaction.
Other than temperature, the property that also has an effect on the rates of chemical reactions is the concentration of the reactants.
Other factors affecting the rate of chemical reaction are:
the physical state of the reactants surface area temperature and the presence of a catalystTherefore, the correct answer is option B
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Carter is going camping outside he wants to bring a frying pan that will heat up and cool down quickly Which frying pan should carter use that will heat up and cool down the fastest
A copper
B iron
C glass
D steel
Plz help
Answers
The specific heat of the copper pan is the lowest among the other given pans. Therefore, a copper pan should carter used that will heat up and cool down the fastest. Therefore, option (A) is correct.
What is the specific heat?Specific heat of a substance can be described as the heat energy required to raise the temperature of one unit mass of a material by 1 °C. The S.I. unit of the specific heat capacity of a material is J/g°C.
The thermal capacity of a substance is a physical characteristic of a substance so it depends upon the nature of the material.
The mathematical expression of specific heat can be represented as :
Q = m×C× ΔT Where C is the specific heat.
The specific heat is an intensive characteristic of a material and does not depend upon the shape or size of the quantity.
As given the values of the specific heat of metals of the frying pans, the highest specific heat means that the pan will take more heat to increase just one-degree temperature. As copper has the lowest specific heat so it can easily heat up in comparison to other pans.
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The stars of the Milky Way are all near a great circle on the Celestial Sphere. This great circle?
A. is the Celestial Equator.
B. is the Ecliptic.
C. passes through the Celestial Poles.
D. is none of the other things listed here.
Answers
It is D. is none of the other things listed here. The stars of the Milky Way are all near a great circle on the Celestial Sphere. This great circle is called the milky circle
The Milky Circle is a great circle on the celestial sphere that is defined by the stars of the Milky Way. It is visible to the n_aked eye and is one of the most recognizable features of the night sky, stretching across the entire sky from horizon to horizon. It is composed of millions of stars, all of which reside in the same galactic plane and are moving in the same direction around the galactic center. The Milky Circle is a beautiful sight to behold, especially during a clear night, when it appears as a wide band of light. It is a reminder of the vastness of the universe and the beauty of the night sky. It is also a great way to orient oneself in the night sky, as its stars form a familiar pattern that can help one find constellations and other objects.
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Jeff is a landscaping contractor and lifts a rock weighing 600 pounds by wedging a board under the rock. Jeff weighs 150 pounds and puts all of his weight on the lever. How much mechanical advantage did the lever provide to Jeff in lifring the rock?
Answers
The mechanical advantage that us provided due to lifting the rock is 4.
What is the mechanical advantage?The term mechanical advantage has to do with the degree of ease that is introduced by the use of simple machines. We know that the entire purpose of a machine is to make work easier.
We also know that the mechanical advantage is the ratio of the load to the effort.
MA = Load/Effort
Load = 600 pounds
Effort = 150 pounds
MA = 600 pounds / 150 pounds
= 4
The lever offer Jeff a mechanical advantage of 4 as he lifts the rock.
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A rock with a 8 kg mass is tied to a string and swung in a circular path. The 1.8 meter string is tied to a post, and during the motion, the string has a 35° angle with the post. The rock makes 100 rounds in 3 minute. The centripetal force on the ball is __ N.
Answers
The centripetal force of the rock tied to a string and swung in a circular path is determined as 1.65 N.
Angular speed of the rock
The angular speed of the rock is calculated as follows;
ω = 2π N
\(\omega = 35^0 \times \frac{2 \pi \ rad}{360^0} \times \frac{100}{3\min} \times \frac{1 \min}{60 \ s} \\\\\omega = 0.339 \ rad/s\)
Centripetal force of the rockThe centripetal force of the rock is calculated from the product of mass and centripetal acceleration as shown below;
Fc = ma
Fc = m(ω²r)
Fc = mω²r
Fc = 8 x (0.339)² x 1.8
Fc = 1.65 N
Thus, the centripetal force of the rock tied to a string and swung in a circular path is determined as 1.65 N.
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The gravitational force between two objects is
proportional to the products of the masses and
proportional to the square of the distance between them.
Answers
The complete question is;
The gravitational force between two objects is ______ proportional to the products of the masses and _______ proportional to the square of the distance between them.
Answer:
First dash is directly
Second dash is inversely
Explanation:
From Newton's law of gravitation the gravitational force is given by the equation;
F = GMm/r²
Where:
F is gravitational force
M and m are two masses representing the two objects
r is the distance between them
G = universal gravitational constant
Thus, if we are to write it in proportion format, we will have;
F ∝ Mm/r²
From this proportion relationship, we can see that the Gravitational force is directly proportional to the products of the two masses and inversely proportional to the square of the distance between them.
Answer:
DirectlyInverselyExplanation:
The gravitational force between two objects is directly proportional to the products of the masses and inversely proportional to the square of the distance between them.
test your hypothesis: how will you use the computer model to test your hypothesis? what steps will you follow? what data will you record? conduct your experiment and record your results.
Answers
Answer:
what is a or b because in the question it dosent give me the answer choses that i need
Question 1) For resonance to occur, the object must experience a frequency equal to its what?
natural frequency
period
wavelength
amplitude
Question 2) What variable affects the natural frequency of an organ pipe?
pipe width
pipe length
pipe area
pipe use
Question 3) Resonance in air columns is used in which of these musical instruments?
violin
trumpet
drums
guitar
Question 4) Which term describes the number of crests that pass a point in a given amount of time?
wave speed
frequency
wavelength
period
Queston 5) Which of the following is the human ear able to detect?
dog whistle
sonar
ultrasound
musical note
Answers
Explanation:
Note that resonance can only occur when the natural frequency is greater than the damping rate, multiplied by the square root of 2. If the damping is too large, then resonance cannot occur.
An in-line skater first accelerates from 0. 0 m/s to 5. 0 m/s in 4. 5 s, then continues at this constant speed for another 4. 5 s. What is the total distance traveled by the in-line skater?.
Answers
The total distance traveled by the in-line skater is 33.75 metres.
The total distance will be calculated by the sum of distance due to acceleration and distance due to constant speed. Converting the above mentioned formula in mathematical expression to be used:
d = (v+u/2)×t + v×t
Keep the values in formula to find the total distance.
d = (5+0/2)×4.5 + 5×4.5
Performing addition and multiplication on Right Hand Side of the equation
d = 2.5×4.5 + 22.5
Performing only multiplication on Right Hand Side of the equation
d = 11.25 + 22.5
Performing only addition on Right Hand Side of the equation
d = 33.75 metres
Thus, the skater traveled 33.75 metres.
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Jill is pulling a 200. Newton sled through the snow at constant velocity using a horizontal force of 10. Newtons. What is the kinetic coefficient of friction of the sled on the snow?
Answers
Answer:
The kinetic coefficient of friction of the sled on the snow is 0.05
Explanation:
The given parameters are;
The weight of the sled Jill is pulling, W = 200 N
The force with which Jill is pulling the the sled = 10 Newtons
The nature of the speed with which the sled is pulled = Constant speed
Therefore, given that the only opposing force to the pulling of the sled = The force of kinetic friction, we have;
The force with which Jill is pulling the the sled = 10 Newtons = The force of kinetic friction, \(F_k\)
The force of kinetic friction = The weight of the sled, W × The kinetic coefficient of friction of the sled on the snow, \(\mu _k\)
\(F_k\) = W × \(\mu _k\)
\(\mu _k\) = \(F_k\)/W = 10 N/(200 N) = 0.05
The kinetic coefficient of friction of the sled on the snow = \(\mu _k\) = 0.05.
For the purposes of seeking a theory to explain the formation of the solar system, we identify four major features of our solar system. Which of the following represent these four major features?
- Large bodies in the solar system have orderly motions.
- Planets fall into two major categories (terrestrial and jovian).
- Several exceptions to the general trends stand out.
- Swarms of asteroids and comets populate the solar system.
Answers
Planets fall into two major categories (terrestrial and jovian).
a. Planets can be divided into two main groups.
b. The fusing of hydrogen into helium is how the Sun produces energy.
c. Gravity brought about the solar nebula's collapse.
d. There are a tons of comets and asteroids.
The four main characteristics of the solar system are listed above in the order in which they contributed to its origin.
The majority of planets can be divided into two groups: gaseous giants and other terrestrial planets. As a result of the solar chromosphere's solar winds.
This energy powers the fusion of hydrogen and helium in the sun's core, which powers the sun itself. The solar nebula was a cloud of gases and dust that started to spin on its own, drawing the microscopic particles closer due to gravity. In the solar system, there are around 100 billion comets and asteroids.
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A horizontal line on a phase-change graph indicates
Answers
Answer:
A horizontal line on a phase change graph means there has been
no change. Often longer periods of research are needed to see
significant change.
Two cars are traveling at the same speed (100 km/hr). They are traveling in opposite directions. Do they have the same velocity? Why?
Answers
Explanation:
well its depends for example one car might be going down the hilll and the other up a hill and there the velocity can change between the cars because of gravity so one can be going faster and the other slower.