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Physics 4A vector problems
1. A clock has a 10 cm minute-hand. From the 12 mark to 8 mark, for tip of minute hand,
calculate in unit-vector notation:
a)
b)
c)
d)
e)
f)
displacement vector.
ave
Steps in applying Conservation of Mechanical Energy:
1. Define an isolated system.
2. Identify internal forces on object of interest.
3. Identify the internal forces that do work. If only internal con
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ByMaddieCrum
Dont lament the lost days of cutting your fingers on pristine new novels or catching a whiff of
1) Two horizontal forces act on a boat. The first force is 300.0 N right. The second force
is 400.0 N at 60 degrees above the +x axis. The ship is moving left at 20.0 m/s. Here
right is the +x axis. A
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PSO ' to-I? covet arc. C graph!
Takegthe magnitude (size) of freefail ' [23) b) What is the position of the ball att = 7.0
acceleration to be 10.0 mlsls on this test. seconds ?
Ignore air friction (ob
III! I , 7 .3 \
2) Vector V2 is a velocity vector. it has a
magnitude of 70.0 We and is directed at 374.0
degrees below the negative x axis. *7
' *cfw_x
a) Write this vector in unit vector notation. i
1) A displacement vector B has a magnitude of 65 m and a direction that is 60.0 degrees above the
negative x axis. (See key) -t
E] a) Write this vector in unitvector (analytic) notation. _ y n.
o - ft
NOTE: not all questions are worth the same amount
1)
What is the name of Newtons first law ?
2)
An observer studies a block of ice that is isolated and finds that the block is moving at
a constant vel
right turn and eventually is
direction of 78.0 degrees a
axis. The total time to make the turn was 4.0
seconds. The average acceleration had a
4) An object is traveling from po
passes throug
object
. (just pick correct choice)
li-i-l? PTO NC WWW-b" WW1 SOLE/L 5' 5
L53 1) What Is the name of MNTMW s 2nd law ?
Lil-h) at when 5) Consider 2 forces (represented by arrows)
E] 2) Complete the sentence:
'
(Physics 50 we Ell Term: SM l NAME
1) Basic Rules
a) When given the signal, you may turn this page and begin.
b) Nd Equipment (rulers, protractors, calculators etc.) allowed except a pencil or pen
c
3. [25 pninta The volume charge denain nf a dielectric sphere is: given-1 as; a radial distance From
its center, r, as follow:
pi?) = pa rim)
(pt, and rm are constants and a negative charge density 15
4. cfw_25 points A dielectric sphere has a positive
uniform charge densityr give as p. The radius of the
sphere is given as R- But within diis sphere is
constructed another dielectric of some other ch
2. cfw_25 paints) Using a full and formal vector treatment with the coordine system given as
shown in the diagram, nd the E field vector nfthe half ring of charge of given linear charge
density 3L at
4. [25 points] Rcfcr 10 the diagram. A hollow
dielectric cylinder or radius R and Icnglh L is
umil'luu'rnlr charged on its; surface with a [trial
charge given as 0. Find the electric eld at the
center
4. (25 points) An otherwise solid dielectric sphere ul'
given uniform charge density, p, eoniaine a hollow as A . m
. . H . r"t jim-
shown m the dlagram. hurl the electric eld vccmr cfw_F .1, i x 1,
' the center of an Off center spherical hwllow in an otherwise uniformly
charged dielectric sphere where p is given. Find the value of the point
charge such that the electric eld at the point indicate
4. [25 points) A pueitively charged dielectric Sphere tn" given
uniform charge Clertzuitj,t p is shown in the diagram but with
an inner solid sphere of negative charge density called pe
(imitmm charge
Physics 43 Exam] Spring 0? Name
1. (25 points) Refer to the diagram. A conducting sphere with a
hniiew inside has an inner radius RI- and an outer radius, Rh. The
sphere has centered within its hollow
3. (25 points) It is well kmwn that a sphere may be replaced by an equivalem charge placed at the spheres
origin, but this is not so for other geometriee Censider a dielectric rod of length L and Lmii
Chapter 1
What is biology?
Biology is the scientific study of living organisms
What are the 8 characteristics of life?
Organized from the atom to the biosphere
Use materials and energy from the envi
Physics 4A Exam 11 Name: ,
Fall 09 Lab: 61 62 63
1. (25 points) A roller coaster car of mass m is released from rest at point A at height h and moves
freely with negligible friction into a circular lo
Chapter 7: Work and Energy
1. A small object of mass m is suspended from a string of length L. The object is pulled
sideways by a force F that is always horizontal, until the string nally makes an ang
Chapter 5: Newtons laws of Motion
1. A block is given an initial velocity of 5.00 m/s up a frictionless incline of angle 6 =20 . How
far up the incline does the block slide before coming to rest?
2. A
Physics 4A Exam [1 Name: 5 Olaf/WM 3
Spring 09 Lab Section: M T
1. (25 points) A pendulum consists of a string of length L and a bob of mass m. The string is
brought to 21 horizontal position and the
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l. A block of mass m is pushed by a horizontal force Fagainst an inclined plane of angle 9 with
the horizontal The coefcient of static friction between the blo