Part 1 of 4 - Chapters 1 & 2
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Question 1 of 20
5.0/ 5.0 Points
The attractive force a 70 kg person exerts on the earth is much, much smaller than the force the
earth exerts on the person.
True
False
Answer Key: False
Feedback: Correct!
Qu
Part 1 of 1 -
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Question 1 of 10
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Consider an electrical transformer that has 10 loops on its primary coil and 20 loops on its
secondary coil. What is the current in the secondary coil if the current in the primary coil is
Part 1 of 1 -
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Question 1 of 10
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A heavy object and a light object are dropped from rest at the same time in a vacuum. The
heavier object will reach the ground
A. It depends on the shape of the object.
B. before the ligh
Part 1 of 2 - Chapters 1 & 2
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Question 1 of 10
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What is the density of the Applewood if a piece of 10cm^3 of Applewood has a mass of 7.45g?
Answer: The density of the Applewood is 0.745 g/cm^3.
Answer Key: 0.745
Feedback:
3.- A 1,000.0 kg car with a speed of 90.0 km/h brakes to a stop. How many calories of heat are
generated by the brakes as a result?
Q= ?
Vf=0m/s
Vi=90.0km/h
m=1000.0kg
90.0km/h = 90000m/3600s = 25.0m/s
1.0kcal = 4184J
Q=w/j
W=KEf KEi = -KEi
W= -(1/2)m(vi)
Physics Lab 1
Density
This experiment will let you do "virtual" direct measurements of the mass and volume (via water
displacement) and indirect measurements of density for a variety of objects.
This virtual experiment is an interactive shockwave movie. Y
Perimeter
=
L+W
Area
=
LxW
Volume
=
LxWxH
Density
=
Mass/Volume
Mass
=
Density x Volume
Volume
=
Mass/Density
v
d
t
1 km/h
=
=
=
=
d/t
vt
d/v
0.2778 m/s
a
=
(vf vi)/t
vv
=
(vf + vi)/2
p
=
mv
F
=
ma
a
=
v/ t
d
t
v
vv
a
p
m
F
N
w
Joule
P
W
PE
KE
Q
c
t
QH
QL
Physics Lab 3
Specific Heat and Calorimetry
In this lab you are going to determine the specific heat capacity of an unknown sample of metal
in the temperature range between room temperature (water) and water boiling temperature
(metal), using calorimetry
Physics Lab 2
Momentum
We will use this experiment to explore momentum in one dimension. The simulation replicates
an air track on which two carts can move without any friction. Take a few minutes to investigate
the simulation and become familiar with its
Nicholas A Reyes | Intro to Physics | May 19, 2017
Physics Lab 4
Reflection and Refraction of Light
In this activity, we will explore the properties of reflection and refraction of light as a ray of light
travels between two transparent mediums.
Backgroun
1) A water wave has a frequency of 6 Hz and a wavelength of 3 m. (a) What is the period of these
waves? (b) What is the wave velocity?
Data
T: ?
v: ?
f: 6 Hz
: 3 m
A A) T = 1 / f
T = 1 / 6 Hz
T = 0.166 s (0.2 s)
A B) v = f
v = 3 m (6 Hz)
v = 18 m/s
7) A s
2) A force of 400.0 N is exerted on a 1,250 N car while moving it a distance of 3.0 m. How much work was done on the car?
F = 400.0 N
d = 3.0 m
w = 1,250 N (Not needed)
W=?
Formula: W = F (d)
W = 400.0 N (3.0 m)
= 1,200 N.m
= 1,200 J
6) (A) How many horse
3) A 1,000. kg car with a speed of 90.0 km/h brakes to a stop. How many calories of heat are generated
by the brakes as a result?
Data
Q=?
Vi = 90 km/h (25 m/s) [1 km/h = 0.277 m/s]
Vf = 0 m/s
m = 1,000 kg
Q = w/j
C
w = KEf KEi = - KEi
= -(1/2) m(v)2
= -(
Equations and Formulas
Ch. 1 What is Science?
Symbols
"the change in" a value
"therefore"
"is proportional to"
Density (
or d), Mass (m), Volume (V)
Density
g/cm3
d=m/V
Mass
g
m = d (V)
Volume
cm3
V=m/d
Space: Area and Area of a Circle (A), Volume (V)
2) What is the density of iron if 5.0 cm^3 has a mass of 39.5 g?
Volume (V) = 5.0 cm^3
Mass (m) = 39.5 g
Formula: Density = Mass/Volume (P = m/V)
Density (P) = 39.5 g / 5.0 cm^3
Density = 7.9 g/cm^3
4) If ice has a density of 0.92 g/cm^3, what is the volu
Physics Lab 2
Momentum
We will use this experiment to explore momentum in one dimension. The simulation replicates
an air track on which two carts can move without any friction. Take a few minutes to investigate
the simulation and become familiar with its
12) A rocket moves through outer space at 11,000 m/s. At this rate, how much time would be required to
travel the distance from Earth to Moon, which is 380,000 km?
Data
t=?
v = 11,000 m/s
d = 380,000 km -> 380,000,000 m
Formula: t = d/v
t = 380,000,000 m
Physics Lab 1
Density
This experiment will let you do "virtual" direct measurements of the mass and volume (via water
displacement) and indirect measurements of density for a variety of objects.
The lab simulation is an interactive flash movie. You can do
1.- A water wave has a frequency of 6 Hz and a wavelength of 3 m. (a) What is the period of
these waves? (b) What is the wave velocity?
6 Hz = 1/T
(a) T = 0.17 s
v = f
v = (6 1/s)(3 m)
(b) v = 18 m/s
7.- A submarine sends a sonar signal, which returns fro
How much time is required for reflected sunlight to travel from the Moon to Earth if the
distance between Earth and the Moon is 3.85 X 10^5 km?
Time = distance/velocity
Speed of light = 299,792,458 m/s, or 3*105 km/s
t = (3.85*10^5 km) / (3*10^5 km/s)
Tim
6.- There is a current of 0.830 A through a lightbulb in a 120. V circuit. What is the
resistance of this lightbulb?
= V/A = (120/0.83) = 144.6
Resistance = 144.6
10.- What is the monthly energy cost of leaving a 60 W bulb on continuously if the electri
A 1,000. kg car with a speed of 90.0 km/h brakes to a stop. How many calories of heat are
generated by the brakes as a result?
Kinetic energy = m * v2
90 km/hr = 25 m/s
ke = (1,000 kg) (25 m/s)2
ke = (500)(625) kg m2/s2
1kg m2/s2 = 1 Joule, so ke = 312,50
2. What is the density of iron if 5.0 cm3 has a mass of 39.5 g?
density = mass/volume, or p = m/V
p = 39.5 g/5.0 cm3
p = 7.9 g/cm3
4. If ice has a density of 0.92 g/cm3, what is the volume of 5,000 g of ice?
0.92g/cm3=5000 g/(x)cm3
V = 5434 cm3
5. If you
12. A rocket moves through outer space at 11,000 m/s. At this rate, how much time would be
required to travel the distance from Earth to Moon, which is 380,000 km?
11,000 m/s = 11 km/s
Travel time = (380,000 km) / (11 km/s) = 34,545 seconds, or 576 minute
Part 1 of 1 -
Question 1 of 10
90.0/ 100.0 Points
10.0/ 10.0 Points
What is the net force required to accelerate a 5.0 kg object to 10 m/s^2?
A.0.5 N
B.5 N
C.50 N
D.2.0 N
Answer Key: C
Question 2 of 10
10.0/ 10.0 Points
What is the acceleration of a car t
Part 1 of 4 - Chapters 1 & 2
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5.0/ 5.0 Points
Question 1 of 20
After being released, a ball thrown straight up from a bridge will have an acceleration of
A.more than 9.8
m/s^2.
B.less than 9.8
m/s^2.
C.9.8 m/s^2.
D.zero.
Answer Key:
C
Feed
1.- A water wave has a frequency of 6 Hz and a wavelength of 3 m. (a) What is the
period of these waves? (b) What is the wave velocity?
Data
f=6Hz
=3cm
T=?
v=?
a) T=1/f=1/6
T=0.2s
b) v= f=(3cm)(6Hz)
v=18cm
7.- A submarine sends a sonar signal, which retur
Exercise 1: Cell Transport Mechanisms and Permeability: Activity 3: Simulating Osmotic Pressure Lab Report
Pre-lab Quiz Results
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1. Which of the following is true of osmosis?
You correctly answer
Exercise 3: Neurophysiology of Nerve Impulses: Activity 3: The Action Potential: Threshold Lab Report
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1. Axons are
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Exercise 2: Skeletal Muscle Physiology: Activity 1: The Muscle Twitch and the Latent Period Lab Report
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1. Skeletal muscles are connected to bones by
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