In which cases is momentum not conserved? Select one: a. A car slowing down as it...
In which cases is momentum not conserved?
Select one:
a. A car slowing down as it approaches a stop sign
b. A ball thrown upwards by a stationary child
c. A snowball exploding upon impact
d. All of the above
e. None of the above
Homework Answers
e) none of the above as in all situations given in a, b and c External forces are acting on the system so momentum can not be conserved..
Add Answer to:
In which cases is momentum not conserved?
Select one:
a. A car slowing down as it...
A car is going down a hill and is also slowing down as it approaches a...
A car is going down a hill and is also slowing down as it approaches a stop sign. How is the car’s potential energy changing? How is the car’s kinetic energy changing? To what other form does energy go? Explain your answers. Which has the greater amount of internal energy, an iceberg or a cup of hot coffee? Defend your answer. Consider two glasses, one filled with water and the other half full, with the water in the two glasses...
Please HELP Reading: Chapter 15 A car is going down a hill and is also slowing down as it appro...
Please HELP Reading: Chapter 15 A car is going down a hill and is also slowing down as it approaches a stop sign. How is the car’s potential energy changing? How is the car’s kinetic energy changing? To what other form does energy go? Explain your answers. Which has the greater amount of internal energy, an iceberg or a cup of hot coffee? Defend your answer. Consider two glasses, one filled with water and the other half full, with the...
Linear Momentum of an object is conserved At all times b. Only when the net external...
Linear Momentum of an object is conserved At all times b. Only when the net external force on the object is Zero When the net external torque on the object is Zero d. Never A truck of mass 4000 (kg) is moving at 10 (m/s). A car of mass 1000 (kg) is moving at 40 (m/s). So, the truck’s momentum, compared to the car, is Greater b. Smaller c. the same d. Cannot say without knowing their accelerations A 1000...
Multiple Choice. Select the best option. You do not need to show your work. S Two...
Multiple Choice. Select the best option. You do not need to show your work. S Two men, Joel and Jerry, push against a wall. Jerry stops after 10 min, while Joel can push for 5.0 min onger. Compare the work they do. A) Both men do positive work, but Joel does 75% more work than Jerry. B) Both men do positive work, but Joel does 50% more work than Jerry C) Both men do positive work, but Jerry does 50%...
which statement is true about momentum? Momentum is a vector quantity Momentum equals the mass times...
which statement is true about momentum? Momentum is a vector quantity Momentum equals the mass times the velocity The units of momentum of kg-m/s All of the above The total momentum of a group of objects remains the same except.... During a collision If they are acted on by an outside force If one obkect is more than 10 times the size of the other All of the above In doing this experiment, it is important to make sure.. The...
13. The interference of waves refers to the A) slowing down of one wave in the...
13. The interference of waves refers to the A) slowing down of one wave in the presence of another e of two or more waves at every point in tho change in wavelength that oecurs when two waves cross one another D) phase change of I 80" that occurs on reflection of a wave at a fixed end E) ability of waves to go around comers 14. A phase shift of 180' occurs when a light wave A is transmitted...
Question 1 20 pts For which of the following scenarios would the total momentum of the...
Question 1 20 pts For which of the following scenarios would the total momentum of the system not be conserved? Select all that apply. A bullet is shot at a downward angle (below the horizontal) into a block of wood at rest on a horizontal, frictionless surface. The system consists of the bullet and the block. Two balls moving in free fall motion such that they collide while one ball is moving downward and the other ball moving upward. The...
In which of the following cases did Congress violate the Commerce Clause? Select one: a. None...
In which of the following cases did Congress violate the Commerce Clause? Select one: a. None of the above (i.e., none of the answers to this question are correct) b. When Congress passed a law prohibiting farmers from growing wheat for private consumption because the growth of personal wheat in aggregate substantially affects the federal economy. c. When Congress passed a law requiring individuals to purchase health insurance or pay a penalty. d. When the FDA confiscated locally grown medicinal...
4. In a collision which of the following quantities is always conserved? A). Acceleration B). Energy...
4. In a collision which of the following quantities is always conserved? A). Acceleration B). Energy C). Kinetic Energy D). Momentum 5. If the applied force is perpendicular to the motion of the object then the Work done by the force is ___ A). Negative B). Positive C). Zero 6. A car, travelling at 40m/s slows to 10m/s in 5 seconds. What was the acceleration? A). -6 m/s? B). -4m/s2 C).-2 m/s2 D). -9.8m/s 7. A ball thrown straight up...
Which of the following is a hall mark of a state function? Select one: a. Its...
Which of the following is a hall mark of a state function? Select one: a. Its change can be determined by breaking a process up into steps even if you don't know the changes for the individual steps. b. It does not depend upon concentration. c. Its change depends on the path taken from the initial state to the final state. d. It does not depend upon temperature. e. None of the above.
Multiple Choice. Select the best option. You do not need to show your work. S Two men, Joel and Jerry, push against a wall. Jerry stops after 10 min, while Joel can push for 5.0 min onger. Compare the work they do. A) Both men do positive work, but Joel does 75% more work than Jerry. B) Both men do positive work, but Joel does 50% more work than Jerry C) Both men do positive work, but Jerry does 50%...
13. The interference of waves refers to the A) slowing down of one wave in the presence of another e of two or more waves at every point in tho change in wavelength that oecurs when two waves cross one another D) phase change of I 80" that occurs on reflection of a wave at a fixed end E) ability of waves to go around comers 14. A phase shift of 180' occurs when a light wave A is transmitted...
Question 1 20 pts For which of the following scenarios would the total momentum of the system not be conserved? Select all that apply. A bullet is shot at a downward angle (below the horizontal) into a block of wood at rest on a horizontal, frictionless surface. The system consists of the bullet and the block. Two balls moving in free fall motion such that they collide while one ball is moving downward and the other ball moving upward. The...
4. In a collision which of the following quantities is always conserved? A). Acceleration B). Energy C). Kinetic Energy D). Momentum 5. If the applied force is perpendicular to the motion of the object then the Work done by the force is ___ A). Negative B). Positive C). Zero 6. A car, travelling at 40m/s slows to 10m/s in 5 seconds. What was the acceleration? A). -6 m/s? B). -4m/s2 C).-2 m/s2 D). -9.8m/s 7. A ball thrown straight up...
Most questions answered within 3 hours.
-
If X has a normal distribution with mean µ =
12 and variance σ2 = 9,...
asked 44 seconds ago -
Electrons flow through a 2.7-mm-diameter aluminum wire at
2.5×10−4 m/s .
How many electrons move through...
asked 2 minutes ago -
For a recent year, McDonald’s (MCD)
company-owned restaurants had the following sales and expenses (in
millions):...
asked 1 minute ago -
An example of an operational taxonomic unit
(OTU) is
a. Multiple sequence alignment.
b. Protein sequence....
asked 2 minutes ago -
In a sample of 15 men, the mean height was 171 cm. In a sample
of...
asked 2 minutes ago -
In this exercise, we will be refactoring a working program. Code
refactoring is a process to...
asked 1 hour ago -
3
researchers at Cambrige looked at 5,000 firms in Englans and found
that, in terms of...
asked 1 hour ago -
why it is important and how it integrates within ERP? And what
the core challenges of...
asked 3 hours ago -
A strawberry farmer determines that the average weight of
individual strawberries produced by plants in his...
asked 3 hours ago -
Chargaff's results yielded a molar ratio of 0.400 for A to G in
avian tubercle bacillus...
asked 6 hours ago -
Which of the following binds ATP/ADP?
a. microfilaments
b. microtubules
c. intermediate filaments
d. microfilaments and...
asked 6 hours ago -
Assume that the situation can be expressed as a linear cost
function. Find the cost function....
asked 7 hours ago