Name:_
Physics A130
Homework # 2
Ref. Ch.2
Mark your answers clearly
1.
The position of a particle moving along the x axis is given by x = (21 + 22t 6.0t2)m,
where t is in s. What is the average velocity during the time interval t = 1.0 s to t = 3.0 s?
a.
Name:_
Physics A130
Homework # 1
Ref. Ch.1
Mark your answers clearly
1.
Find the average density of a white dwarf star if it has a mass equal to that of the sun (2.0
1030 kg) and a radius equal to that of the Earth (6.4 106 m).
a. 9.0 106 kg/m3
b. 1.8 10
Name:_
Physics A130
Homework # 5
Ref. Ch.6
Mark your answers clearly
1.
A 5.0-kg object is pulled along a horizontal surface at a constant speed by a 15-N force
acting 20 above the horizontal. How much work is done by this force as the object
moves 6.0 m?
PHYSICS
Chp. 4 Homework 3
Answer Key
Concept Review
5.
a.
v
t
b. The cars acceleration is equal to the slope of the line graph.
Problems
2.
a.
b.
speed of car A = 50 m/s; speed of car B = 30 m/s
xa = v t = (30 m/s)(60 s) = 1800 m
xb = xo + vo(t) + (1/2)(a
Name:_
Physics A130
Homework # 3
Ref. Ch.3
Mark your answers clearly
1. The site from which an airplane takes off is the origin. The x axis points east; the y axis
points straight up. The position and velocity vectors of the plane at a later time are
give
Name:_
Physics A130
Homework # 6
Ref. Ch.7
Mark your answers clearly
1.
A pendulum is made by letting a 2.0-kg object swing at the end of a string that has a
length of 1.5 m. The maximum angle the string makes with the vertical as the pendulum
swings is 3
PHY 151 Test 2 Solutions
Name: _
Show all your work and answers.
Do your work neatly, and step-by-step.
Show units in your final solution.
Part A - Each multiple choice problem is 2 points
Do all Part A problems
1.
The figure below depicts a spiral tube l
Practice Test for Midterm 2
You may use a 3x5 inch cheat card
Acceleration due to gravity:
Mass of Earth
Mass of Sun
Radius of Earth
Density of water
Standard atmospheric pressure
g = 9.80m/s2
ME = 5.981024 kg
Ms = 1.991030 kg
RE = 6.37106 m
water =1000 k