Question

In each question below, describe a situation in which an object meets the qualifications described. Explain why. If the situation is not possible, explain why not.

a. An object has centripetal acceleration but no tangential acceleration.

b. An object has tangential acceleration but no centripetal acceleration.

c. An object has both centripetal acceleration and tangential acceleration

Answer #1

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Give an example of each object described below, or explain why
no such object exists:
1. A group with 11 elements that is not cyclic.
2. A nontrivial group homomorphism f : D8 −→ GL2(R).
3. A group and a subgroup that is not normal.
4. A finite integral domain that is not a field.
5. A subgroup of S4 that has six elements.

1. An object of mass M is moves in an x,y plane according the
equations below. The parameters A, B, and C are positive constants.
We are considering its motion for negative and positive values of
t. x equals A t y equals B t minus C t squared Which of the
following are true?
The speed of the object at t=0 is zero.
The acceleration of the object is negative C.
The speed of the object at t=0 is...

Find the answer and explain
pls.
_____ 1. An object in
uniform circular motion has a constant
A.
velocity B.
acceleration
C. both of these
D. neither of these
_____ 5. When a racecar rounds a
circular banked corner at a constant speed, it has
A. No tangential
acceleration
B. No centripetal
acceleration
C. both of
these
D. Neither of these
_____
6. On an unbanked road surface,
the safe maximum driving speed for rounding a corner is directly...

-According to Newton’s First Law, which of the following
statements is true?
a) If an object is in motion, then a force is acting on it.
b) A force is necessary to change the motion of an object.
c) If an object is stationary, then no forces are acting on
it.
d) An object in motion must have an acceleration.
-If an object is in motion, can its acceleration be zero?
-If an object’s acceleration is zero, does that mean...

If the simple CAPM is valid, which of the situation in Tables
below are possible? Explain. Consider each situation
independently
A.) Portfolio Expected Return Standard Deviation
Risk Free Rate 5% 0%
Market 21% 22%
A 20% 10%
B.) Portfolio Expected Return Beta
Risk Free 10% 0
Market 18% 1.0
A 22% 2

For each situation described below, answer the following
questions and explain your reasoning:
Should the magnification be larger or smaller than
1.00?
Should the image be real or virtual?
Should the mirror/lens be convex or
concave?
A security mirror in a convenience store allows the
clerk to view the entire store in one small image.
Answer and explanation:
A movie projector shines a movie onto a large screen in
a theater.
Answer and explanation:
A person uses a magnifying glass...

Which of the following type of sampling used match the situation
described below.
A market researcher has randomly selected three neighborhoods in
a certain region. She is surveying all the people from each
neighborhoods. --> Convenience sampling
In a survey of 500 subjects, each was asked how often he or she
watched talent show. The survey subjects were internet users who
responded to a question that was posted on a news website. -->
Random sampling
A market researcher has partitioned...

Describe equilibrium, surplus and shortage. For each situation,
explain what the relationship is between Qd and Qs, and between S
and D. What is causing these relationships to exist? (Answer the
question in simple form and in your own words)

For each independent situation described in the table below,
name the qualitative characteristic of accounting information that
applies and record your answer in the left column of the table.
Qualitative Characteristic
Situation
An independent outside expert is retained to assess the value of
the recorded amounts for tangible and intangible capital
assets.
Past trends are used to forecast this year’s sales.
Financial statements are issued four weeks after the year-end
even though this requires the use of estimates for some...

Question 1: Mark True or False beside each
statement below:
_______(a) The center of mass (gravity) of any object must lie
on a point within or on the body of each
object.
_______(b) The torque due to a force is independent of
the choice of axis of rotation.
_______(c) If the forces on an object balance, then this object
cannot experience any rotation.
_______(d) If the torques on an object balance, then this object
cannot have angular acceleration.
_______(e) If...

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