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- University physics volume 1
- Unit 1. mechanics
- Applications of newton's laws
- Drag force and terminal speed
If the order of the barges of the preceding exercise is reversed so that the tugboat pulls the
barge with a force of
what are the acceleration of the barges and the tension in the coupling cable?
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An object with mass
m moves along the
x -axis. Its position at any time is given by
where
p and
q are constants. Find the net force on this object for any time
t .
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A helicopter with mass
has a position given by
Find the net force on the helicopter at
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Located at the origin, an electric car of mass
m is at rest and in equilibrium. A time dependent force of
is applied at time
, and its components are
and
where
p ,
q , and
n are constants. Find the position
and velocity
as functions of time
t .
and
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A particle of mass
m is located at the origin. It is at rest and in equilibrium. A time-dependent force of
is applied at time
, and its components are
and
where
p ,
q , and
n are constants. Find the position
and velocity
as functions of time
t .
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A 2.0-kg object has a velocity of
at
A constant resultant force of
then acts on the object for 3.0 s. What is the magnitude of the object’s velocity at the end of the 3.0-s interval?
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A 1.5-kg mass has an acceleration of
Only two forces act on the mass. If one of the forces is
what is the magnitude of the other force?
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A box is dropped onto a conveyor belt moving at 3.4 m/s. If the coefficient of friction between the box and the belt is 0.27, how long will it take before the box moves without slipping?
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Shown below is a 10.0-kg block being pushed by a horizontal force
of magnitude 200.0 N. The coefficient of kinetic friction between the two surfaces is 0.50. Find the acceleration of the block.
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As shown below, the mass of block 1 is
while the mass of block 2 is
The coefficient of friction between
and the inclined surface is
What is the acceleration of the system?
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A student is attempting to move a 30-kg mini-fridge into her dorm room. During a moment of inattention, the mini-fridge slides down a 35 degree incline at constant speed when she applies a force of 25 N acting up and parallel to the incline. What is the coefficient of kinetic friction between the fridge and the surface of the incline?
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A crate of mass 100.0 kg rests on a rough surface inclined at an angle of
with the horizontal. A massless rope to which a force can be applied parallel to the surface is attached to the crate and leads to the top of the incline. In its present state, the crate is just ready to slip and start to move down the plane. The coefficient of friction is
of that for the static case. (a) What is the coefficient of static friction? (b) What is the maximum force that can be applied upward along the plane on the rope and not move the block? (c) With a slightly greater applied force, the block will slide up the plane. Once it begins to move, what is its acceleration and what reduced force is necessary to keep it moving upward at constant speed? (d) If the block is given a slight nudge to get it started down the plane, what will be its acceleration in that direction? (e) Once the block begins to slide downward, what upward force on the rope is required to keep the block from accelerating downward?
a. 0.60; b. 1200 N; c.
and 1080 N; d.
e. 120 N
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Questions & Answers
I'm interested in biological psychology and cognitive psychology
what does preconceived mean
How can I develope my cognitive domain
why is communication effective
Communication is effective because it allows individuals to share ideas, thoughts, and information with others.
effective communication can lead to improved outcomes in various settings, including personal relationships, business environments, and educational settings. By communicating effectively, individuals can negotiate effectively, solve problems collaboratively, and work towards common goals.
it starts up serve and return practice/assessments.it helps find voice talking therapy also assessments through relaxed conversation.
miss
Every time someone flushes a toilet in the apartment building, the person begins to jumb back automatically after hearing the flush, before the water temperature changes. Identify the types of learning, if it is classical conditioning identify the NS, UCS, CS and CR. If it is operant conditioning, identify the type of consequence positive reinforcement, negative reinforcement or punishment
please i need answer
Wekolamo
because it helps many people around the world to understand how to interact with other people and understand them well, for example at work (job).
Agreed 👍 There are many parts of our brains and behaviors, we really need to get to know. Blessings for everyone and happy Sunday!
ARC
A child is a member of community not society elucidate ?
Isn't practices worldwide, be it psychology, be it science. isn't much just a false belief of control over something the mind cannot truly comprehend?
compare and contrast skinner's perspective on personality development on freud
Skinner skipped the whole unconscious phenomenon and rather emphasized on classical conditioning
war
explain how nature and nurture affect the development and later the productivity of an individual.
nature is an hereditary factor while nurture is an environmental factor which constitute an individual personality. so if an individual's parent has a deviant behavior and was also brought up in an deviant environment, observation of the behavior and the inborn trait we make the individual deviant.
Samuel
I am taking this course because I am hoping that I could somehow learn more about my chosen field of interest and due to the fact that being a PsyD really ignites my passion as an individual the more I hope to learn about developing and literally explore the complexity of my critical thinking skills
and having a good philosophy of the world is like a sandwich and a peanut butter 👍
Jonathan
generally amnesi how long yrs memory loss
interpersonal relationships
What would be the best educational aid(s) for gifted kids/savants?
treat them normal, if they want help then give them.
that will make everyone happy
Saurabh
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Source:
OpenStax, University physics volume 1. OpenStax CNX. Sep 19, 2016 Download for free at http://cnx.org/content/col12031/1.5
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