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PHY 265 Exam 1 | With 100% Correct Answers
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PHY 265 Exam 1 | With 100% Correct Answers What is the Physics Primer? a. A tutorial of the most important physics concepts covered in introductory physics courses. b. A detailed explanation of all of the mathematics you will use in your introductory physics course. c. A list of the most importan...

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  • August 4, 2024
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  • 2024/2025
  • Exam (elaborations)
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  • phy 265 exam
  • what is the physics primer

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PHY 265 Exam 1


What is the Physics Primer?

a. A tutorial of the most important physics concepts covered in introductory physics
courses.
b. A detailed explanation of all of the mathematics you will use in your introductory
physics course.
c. A list of the most important formulas used in introductory physics courses.
d. A set of mathematics topics that are relevant to introductory physics courses.

Determine the values of m and n when the following mass of the Earth is written in
scientific notation: 5,970,000,000,000,000,000,000,000 kg
m, n = 5.97, 24

Determine the values of m and n when the following average distance from the Sun to
the Earth is written in scientific notation: 150,000,000,000 mm.
m,n = 1.5, 11

Determine the values of m and n when the following charge of a proton is written in
scientific notation: 0.000000000000000000160 C.
m,n = 1.60, -19

Determine the values of m and n when the following average magnetic field strength of
the Earth is written in scientific notation: 0.0000451 T
m, n = 4.51, -5

The mass of a high speed train is 4.5×105 kg, and it is traveling forward at a velocity of
8.3×101 m/s. Given that momentum equals mass times velocity, determine the values
of mm and n when the momentum of the train (in kg⋅m/s) is written in scientific notation.
m,n = 3.7,7

Given that average speed is distance traveled divided by time, determine the values of
m and n when the time it takes a beam of light to get from the Sun to the Earth (in s) is
written in scientific notation. Note: the speed of light is approximately 3.0×108 m/s.
m,n = 5.0, 2

In an experiment you are performing, your lab partner has measured the distance a cart
has traveled: 28.4inch. You need the distance in units of centimeter and you know the
unit equality 1inch=2.54centimeter. By which conversion factor will you multiply 28.4inch
in order to perform the unit conversion?

a. 2.54 centimeter/ 1 inch
b. 2.54 inch / 1 centimeter

, c. 1 inch / 2.54 centimeter
d. 1 centimeter/ 2.54 inch

You would like to know whether silicon will float in mercury and you know that can
determine this based on their densities. Unfortunately, you have the density of mercury
in units of kilogram/meter^3 and the density of silicon in other units: 2.33 gram/
centimeter^3. You decide to convert the density of silicon into units of kilogram/ meter^3
to perform the comparison. By which combination of conversion factors will you multiply
2.33 gram/ centimeter^3 to perform the unit conversion?
1 kilogram/ 10^3 gram × 1 centimeter/ 10^−2meter × 1 centimeter/ 10^−2 meter × 1
centimeter 10^−2 meter

You have negotiated with the Omicronians for a base on the planet Omicron Persei 7.
The architects working with you to plan the base need to know the acceleration of a
freely falling object at the surface of the planet in order to adequately design the
structures. The Omicronians have told you that the value is gOP7=7.29gOP7=7.29 flurg
grom^2, but your architects use the units meter second^2, and from your previous
experience you know that both the Omicronians and your architects are terrible at unit
conversion. Thus, it's up to you to do the unit conversion. Fortunately, you know the unit
equality relationships: 5.24 flurg = 1 meter and 1 grom = 0.493 second. What is the
value of gOP7 in the units your architects will use, in meter/second^2?
gOP7 = 5.72
meter/ second^2

A student solving for the acceleration of an object has applied appropriate physics
principles and obtained the expression a = a1 + F/m where a1=3.00 meter/second2,
F=12.0 kilogram⋅meter/second2 and m=7.00 kilogram. First, which of the following is the
correct step for obtaining a common denominator for the two fractions in the expression
in solving for a?
a= (m/m⋅a1/1)+(1/1⋅F/m)

Next, based on the correct answer from Part A, which of the following is the correct
symbolic expression for a?
a= ma1+F/m

Finally, what is the numerical value of aa?
a = 4.71 meter/ second^2

A student solving a physics problem for the velocity of an object has applied appropriate
physics principles and obtained the expression v= d/t − v0, where d= 35.0 meter d=35.0
meter, t=9.00 second, and v0=3.00 meter/second. What is the velocity v?
8.00 meter/ 9.00 second

Dr. Hewitt has clay "blobs" hanging on either side of his head in this video. When he
turns around, what happens to the blobs?

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