Vincent R. Mercado
Physics HW #7
Chapter 10
Conceptual Question #1
(a) What is the angular speed of the second hand of a clock?
(b) What is the direction of
as you view a clock hanging on a vertical wall?
The direction of the omega vector is into the wall
Vincent R. Mercado
Assignment W3
Conceptual Question #2
Conceptual Question #2
2.If a car is traveling due westward with a constant speed of 20 m/s, what is the resultant force acting
on it?
Fn
20.0 m/s
Fk
Fg
by the engine to the system to overcome
the fr
Physics Lab 1
Projectile Motion
We will use this 2-D Golf Simulation to explore combined horizontal and vertical motion
(select experiment #7). This simulation provides a fun-filled way to examine 2-D projectile
motion with and without air resistance. Bef
(a)
What is the angular speed of the second hand of a clock? (b) What is the
direction of as you view a clock hanging on a vertical wall? (c) What is the
magnitude of the angular acceleration vector of the second hand?
ANS: (a) 2/60s = /30s = 0.1047 rad/s
A sharpshooter fires a rifle while standing with the butt of the gun against her
shoulder. If the forward momentum of a bullet is the same as the backward
momentum of the gun, why isnt it as dangerous to be hit by the gun as by the
bullet?
ANS: The law of
If someone told you that astronauts are weightless in orbit because they are beyond
the pull of gravity, would you accept the statement? Explain.
ANS: No because the astronauts still have weight of their own, but the
force of the Earths gravity is acting
Yes or no: Is each of the following quantities a vector? (a) force (b) temperature (c)
the volume of water in a can (d) the ratings of a TV show (e) the height of a building
(f) the velocity of a sports car (g) the age of the Universe
ANS: a.) Y
b.) N
c.)
Christina Foster
Student ID: 4656000
Physics Lab 1
Projectile Motion
We will use this 2-D Golf Simulation to explore combined horizontal and vertical motion
(select experiment #7). This simulation provides a fun-filled way to examine 2-D projectile
motion
Physics forum week 05
Does the kinetic energy of an object depend on the frame of reference in which its motion is measured?
Illustrate and elaborate your point.
I really had to spend some time thinking about this weeks forum, and for me to really underst
Physics assignment week 03
Chapter 05
2. If a car is traveling due westward with a constant speed of 20 m/s, what is the
resultant force acting on it?
Answer: There is no force acting on the car since the acceleration is constant, and
there is no change,
Physics assignment week 06
Chapter 08
Chapter 8
Conceptual Question 10 (p. 224)
Problems
3, 6, 12 & 43 (p. 224 - 228)
SUBMISSION INSTRUCTIONS
10. A car salesperson claims that a 300-hp engine is a necessary option in a compact
car, in place of the convent
Physics Lab 2
Newton's Second Law
The purpose of this experiment is to validate Newtons Second Law of Motion. In part A the lab
cart will be accelerated by various net forces while keeping mass constant. In part B the lab cart
will be accelerated by a con
Physics assignment week 01
Week 1 - Assignment 1: Physics and Measurement / Motion in One Dimension
Chapter 1
1.
Rank the following five quantities in order from the largest to the smallest. If two of the
quantities are equal, give them equal rank in your
Chapter 3
1. Yes or no: Is each of the following quantities a vector? (a) force (b) temperature
(c) the volume of water in a can (d) the ratings of a TV show (e) the height of a
building (f) the velocity of a sports car (g) the age of the Universe
A vecto
Physics Lab 3
Falling Ball Kinetic and Potential Energy
We will use this virtual experiment to explore the relationship between kinetic and potential
energy. Kinetic and potential energy represent the forms of mechanical energy. Potential energy
exists wh
Cite two examples in which a force is exerted on an object without doing any work
on the object.
ANS: Pushing on a house, or reading a book.
(a) For what values of the angle between two vectors is their scalar product
positive? (b) For what values of is t
1. Rank the following five quantities in order from the largest to the
smallest. If two of the quantities are equal, give them equal rank in
your list. (a) 0.032 kg (b) 15 g (c) 2.7 105 mg (d) 4.1 108 Gg (e)
2.7 108 g
ANS: C=E>D>A>B
2. Answer each questio
Vincent Mercado
Physics HW Week #5
Chapter 7
Conceptual Questions
Question #2
2.Cite two examples in which a force is exerted on an object without doing any work on the object.
Two examples of forces being applied but no work being done is the example of
Vincent Mercado
Physics HW#6
Conceptual Question
Conceptual Question #10
A car salesperson claims that a 300-hp engine is a necessary option in a compact car, in place of the
flat terrain. How would you counter this sales pitch?
v= 65 mi/hr
=
at 5 digits
Loading Physics
Chapter 3
Objective Question #1
1.Yes or no: Is each of the following quantities a vector?
(a) force -Yes
(b) temperature - No
(c) the volume of water in a can - No
(d) the ratings of a TV show - No
(e) the height of a building - No
(f) th
Vincent Mercado
Physics HW #9
11/4/2014
Conceptual Question #2
Explain why it takes more fuel for a spacecraft to travel from the Earth to the Moon than for the
return trip. Estimate the difference.
The reason it take more fuel to travel to the Moon from
Vincent R Mercado
SCIN 233
Assingment Week 12
Problem #3
A vertical spring stretches 3.9 cm when a 10-g object is hung from it. The object is replaced with a
block of mass 25 g that oscillates up and down in simple harmonic motion. Calculate the period of
Vincent Mercado
Week 13 HW #12
SCIN233
Chapter 16
Conceptual Question #7
7.Why is a solid substance able to transport both longitudinal waves and transverse waves, but a
homogeneous fluid is able to transport only longitudinal waves?
A solid substance is
Vincent Mercado
Week 15 HW #14
SCIN233
Chapter 21
Conceptual Problem #7
Hot air rises, so why does it generally become cooler as you climb a mountain? Note: Air has low
thermal conductivity.
As you rise in altitude the density of air decreases. This means
Answers to Lab 3
We have the Potential Energy given by
PE=mgy with y being the height
200J=(5kg)(9.8 m/s^2)y
Therefore
Y=200J/[(5kg)(9.8 m/s^2)]
So y or the height is 4.08 meters
Since we have an EAS of 50% we can easily find the height of the first bounc
Physics Lab 4
Torque and Rotational Equilibrium
We will use this virtual experiment to study the concept of torque and the conditions that must be
met for a body to be in rotational equilibrium.
Instructions:
Visit the below web page and review the mater
College of the Desert
Prerequisite/Co-requisite Challenge (Form B)
Instructions: In accordance with Title 5 section 55201, students may challenge a prerequisite/co-requisite if they meet certain
criteria. To submit a challenge:
Student must obtain the Pre