Experimental Design Labs
For these labs, you will have one or more research questions to answer using the provided lab
equipment. If provided, the lab handout you will use does not have specific, step
Discuss Bacterial cell walls with regard to (a) resistance to phagocytosis, (b) chemical composition,
and (c) decolorization by alcohol.
Phagocytosis is a process by which phagocytes engulf, or destro
1.
2.
Why does a baseball catchers mitt have more padding than a conventional glove?
If you place a box on an inclined plane, it gains momentum as it lectures down. What is
responsible for this change
Conduction is known as the transfer of heat (or electricity) from one place to another, the transfer
occurs as energy through atoms which move and vibrate against each other. Objects can be
conductors
If you toss a coin straight upward while riding in a train, where does the coin land when the motion
of the train is uniform along a straight-line track?
Galileo asserts, in absence of a force, a movi
Discuss, and make a comparison of, pollution by conventional fossil-fuel power plants and nuclearfission power plants. Consider thermal pollution, chemical pollution, and radioactive pollution.
Nuclea
According to our textbook, a rapidly spinning star shows red-shifted light from the side turning
away from us and blue-shifted light from the side turning toward us [Hew15]. Blue-shifted light
indicat
When we look at a submerged object in water, our perception is that the object is closer to the
surface of the water than it actually is, due to refraction. Refraction causes an illusion with objects
Discuss the three rules that make an object sink or float. How can a fish swim deep in water or float
to the surface as it wishes?
In terms of buoyancy, there are three rules that determine an objects
The technique used by a simple lie detector consisting of an electric circuit, is supposed to
indicate that a person is lying if the electric current changes. The theory is that the bodys
reactions fr
55 Chapter 9, Problem 50 Bookmark Show all steps: (n :5
Step-by-step solution
Step 1 of 1 A
Answer:
< Accotding w 11: law of canservalicm of momentum, The total momentum of an isolated >
system of obj
55 Chapter 9, Problem 8P [1 Bookmark Show all steps: (n :
Step 1 of3 A
The speed of air (v) = 120 kmfh
< = [120 x %]mls >
=33,33m/s
The density of air (3):12cglm3
Area of the building (A) = (45m) (65m
55 Chapter 2, Problem 71GP a Bookmark Show all steps: (m- ;:
Step 1 of2 A
The acceleration due to gravity on the moon is g = g the value of g on Earth,
Step 20f2 A
We assume the same initial velocity
55 Chapter 9, Problem 4P [1 Bookmark Show all steps: (n :
Step-by-step solution
Step 1 of2 A
The mass ofthe particle = m
< The force on the particle (F) = 26i 12tj >
Fis varyingfrom t= 1.0 s to t=2.0
55 Chapter 9, Problem 7P a Bookmark Show all steps: (m- ;:
Step 2 of 2 A
SOLUTION
The final velocity
v = .wtan 5
From the law of conservation of momentum, initial linear momentum is equal to nal
linea
55 Chapter 2, Problem 7SGP Bookmark Show all steps: @ ;:
Step 1 of3 A
APPROACH:
< By using the simple kinematics equation v2 =v:+2a(xxo)we can approach the >
solution for the given problem. Here vois
EE Chapter 9, Problem 3P a Bookmark Show all steps: (n ;:
Step-by-step solution
Step 1 of2 A
The momentum of the particle is P = 4.8t2i-8,0j-8.9Ik
NEXT
Step 2 of 2 A
In terms of momentum, Newton's Sec
55 Chapter 3, Problem 29P [1 Bookmark Show all steps: (n g:
In vertical direction
Initial height is y, = 0
Final height ofrock (y) = 75m
Acceleration is (a)= g
Time taken to reach the water is (t) = 3
55 Chapter 3, Problem 32P Bookmark Show all steps: @ ;:
Step 1 of 2 A
APPROACH:
. . . . . 1 2 A2:
< By usmg Simple kinematics equations y = y0 +vyo +ayt and V: = Twe >
can nd the initial speed of the
55 Chapter 9, Problem 70 [1 Bookmark Show a slepsi (n :
Step-by-step solution
Step 1 all A
The magnitude of momentum change is the same for both the small car and the truck.
< From Newton's 3"! Law, t
55 Chapter 9, Problem 6P [1 Bookmark Show all steps: (n :
Step 3 of 4 A
The average force on the ball is,
17:
Substitute (26.746 run/s); for v, (32.0 m/s)(.) for 60, ans kg for m, and 25 ms for N.
0.l
Chapter 2, Problem 70GP
D Bookmark
(5.0 m/s)! =%(1.2 mils):2 [-.- from equations (1) and (2)]
1
5.0 m/s = 5(12 ails):
_ 2(5.om/s)
- 2
1.2 m/s
=8.33 5
Comment
Step Sofa A
For fugitive, time taken to re
55 Chapter 9, Problem 6P a Bookmark Show all steps: (In. ;:
Step-by-step solution
Step 1 0M A
Use law of conservation of energy to find the velocity of the ball. Later use the formula for the
< averag
55 Chapter 9, Problem 28F a Bookmark Show all steps: (n ;:
Step 1 of4 A
Mass of the tennis ball (m) = 0,060 kg.
Step 2 of 4 A
300
m4) 200
100
0
0.05 am
I0)
Comment
Step 3 of 4 A
(a) The impulse = afe
55 Chapter 9, Problem 40 [1 Bookmark Show all steps: (n :
Step-by-step solution
Step 1 of 2 A
Solution:
< Impulse: It is the product of average force applied and time interval. It is also equal to the
Chapter 3, Problem 31 P
D Bookmark
Show all steps: (n
I!
3
Comment
Step 4 of 6 A
The same range of 2 m can be obtained from another angle. That is,
0 = 90- [8
= 72
Comment
Step 5 of 6 A
T
55 Chapter 2, Problem 75613 a Bookmark Show all steps: (m- ;:
2g
_ (13.89 mls)
' 2(930 mls)
=9.84 m
~-
Step 4 of 4 A
(t)
From the part (a) we got the result as the nal velocity of the car as it hits t
Chapter 9, Problem 10
<
Step-by-step solution
Step 1 of2 A
Salado 11:
Law of conservation of momentum: In the absence of external force, the total
momentum of a system remains constant.
Step 2 of 2 A
55 Chapter 2, Problem 7SGP a Bookmark Show all steps: m3
Step1 of4 A
APPROACH:
< By using the equation 122 = v: +2a(yyo)we can approach the solution for the given >
problem, Here vuis the initial spee