POE Q2 Exam 2025

Last updated 20 days ago

30 questions

Required

2

Required

2

Required

1

Required

1

Required

1

Required

1

Required

1

Required

2

Required

2

Required

3

Required

2

Required

2

Required

2

Required

2

Required

2

Required

2

Required

2

Required

1

Required

2

Required

2

Required

1

Required

1

Required

2

Required

1

Required

2

Required

2

Required

2

Required

2

Required

2

Required

2

Library

POE Q2 Exam 2025

Last updated 20 days ago

30 questions

Required

2

Required

2

Required

1

Required

1

Required

1

Required

1

What is Convection?

Required

1

Required

2

Required

2

If the radius of the circle is 2 inches, what is the y-coordinate of the centroid of this half circle?

Required

3

Match definitions with the appropriate answers.

Draggable item		Corresponding Item

Required

2

Required

2

Required

2

Required

2

Required

2

Required

2

The moment of inertia for a 12 foot long by 3 inch wide and 4 inch high oak board would be

Required

2

Required

1

Required

2

Required

2

Required

1

Required

1

Required

2

Required

1

Required

2

Find RAy and RBy if A is the pivot point.

Required

2

What is the reaction force at the end of the roller connection? The given force is in pounds and each grid line is equal to 1 foot.

Required

2

Required

2

Required

2

Required

2

A motor running a winch system can lift a 3N load 6 meters in 60 seconds while running at an average of 9 volts and drawing 500 mA. What is the efficiency of the system?

Calculate the current at R2.

If a student lifts a 225.4N ball 1.202 m in 20 sec, how many joules of work did the student complete?

What is Biomass?

What is Geothermal Energy?

The U-value of a material measures the ability of the material to ___ heat. The the value the better the material will conduct heat.

What is Convection?

What is Energy?

Calculate the total resistance of the circuit.

If the radius of the circle is 2 inches, what is the y-coordinate of the centroid of this half circle?

Match definitions with the appropriate answers.

Draggable item		Corresponding Item
A measure of the tendency of a force to rotate around a point.		Centroid
An indicator of the stiffness of a material related to its size and orientation. The higher the value, the harder it is to make an object bend.		Free Body Diagram
The geometric center of an object.		Moment
An indicator of the stiffness of a material related to its material properties. The higher the value, the harder it is to make an object bend.		Static Equilibrium
A diagram that shows all of the forces acting on an object.		Modulus of Elasticity
When an object is at rest or is moving at a constant velocity.		Moment of Inertia

A machinist is using a 6 inch long wrench to tighten a 1/4 inch bolt. What is the moment (in foot-pounds) if he applies 175 pounds of force to the wrench?

If a 250 pound man walks on a 3" x 6" board (3" is the height) that is 5 feet long and deflects the board 0.25 inches, what is the modulus of elasticity?

If a vector is 30 degrees from the horizon and the force of the vector is 150 pounds, what is the x-component of the vector?

If you were standing in the middle of a 2" x 4" beam (the height is 4") across a 20 foot wide ditch, how much would the beam bend? Assume that you weigh 150 pounds and that the modulus of elasticity of the beam is 1.76 x 106 psi.

In the free body diagram, what is missing?

The moment of inertia for a 12 foot long by 3 inch wide and 4 inch high oak board would be

Two people are pulling on a boat trying to pull it out of the water. Each person has a rope attached to the front end of the boat. One person is pulling with 150 pounds of force straight out of the water (following the x-axis). The other person is pulling the boat with 200 pounds of force at a 45 degree difference than that of the first person. What is the resultant force applied to the boat?

To find the x-value and the y-value for the centroid of a right triangle, you do the following from the corner containing the right angle.

Calculate the total energy transfer in Joules for a wall section measuring 3 m x 5 m by 0.03 m thick with a thermal conductivity of 0.10 J/(smC). Opposing sides of the wall section have a temperature of 20 degrees Celsius and 15 degrees Celsius after one hour.

A block of aluminum at 90 degrees Celsius is placed in 2.00 liter (2 kg) of water at 15 degrees Celsius. Calculate the energy transferred to the water if the final temperature becomes 37 degrees Celsius. The specific heat capacity of water is 4186 J/(kg*C).

Given the information above, what is the R-value of the wall section at a point through the fiberglass batt?

What is the total current in the given in a simple circuit with 3 resistors (413 ohms, 1.3 kilo-ohms, and 0.513 kilo-ohms)?

A student travels on a school bus in the middle of winter from home to school. The school bus temperature is 53 degrees Fahrenheit. The student's skin temperature is 92.4 degrees Fahrenheit. Determine the total energy transferred from the student's body during the 20 min ride to school due to electromagnetic radiation. Note: Skin emissivity is 0.90, and the surface area of the student is 1.60 m2. Don't forget to convert those temps to Kelvin!

What unit is constant in a series circuit?

Find RAy and RBy if A is the pivot point.

What is the reaction force at the end of the roller connection? The given force is in pounds and each grid line is equal to 1 foot.

Calculate the magnitude and direction of the resultant force.

Find the reaction force at B.

In the figure below, the Teenage Mutant Ninja Turtles are balancing on a beam waiting to destroy the Shredder. They are standing balanced in order from left to right: Leonardo (50N), Michelangelo (47 N), Donatello (29 N) and Raphael who didn't weigh in so we don't know his force. Determine Raphael's force in Newtons.

A motor running a winch system can lift a 3N load 6 meters in 60 seconds while running at an average of 9 volts and drawing 500 mA. What is the efficiency of the system?

Calculate the current at R2.

25.5 mA

17.4 mA

36 mA

7.2 mA

3.6 mA

If a student lifts a 225.4N ball 1.202 m in 20 sec, how many joules of work did the student complete?

5418 J

271 J

11 J

188 J

14 J

3750 J

330 J

What is Biomass?

A natural fuel such as coal of gas, formed in the geological past from the remains of living organisms.

A dynamo or similar machine for converting mechanical energy into electricity.

A resource that cannot be replaced once used.

The production of electricity in conductors with the use of magnets.

Energy produced by animal power such as sled dogs or a horse drawn plow.

The use of heat form within the Earth or from the atmosphere near oceans.

Plant materials and animal waste used especially as a source of fuel.

What is Geothermal Energy?

A natural fuel such as coal of gas, formed in the geological past from the remains of living organisms.

The use of heat from within the Earth.

Energy produced by animal power such as sled dogs or a horse drawn plow.

The production of electricity in conductors with the use of magnets.

A resource that cannot be replaced once used.

Plant materials and animal waste used especially as a source of fuel.

A dynamo or similar machine for converting mechanical energy into electricity.

The U-value of a material measures the ability of the material to _________ heat. The ______ the value the better the material will conduct heat.

Resist, Higher

Conduct, Lower

Create, Lower

Create, Higher

Resist, Lower

Conduct, Higher

Absorb, Higher

Absorb, Lower

Process by which, in a fluid being heated, the warmer part of the mass will rise and the cooler portions will sink.

Stages a product goes through from concept and used to eventually withdraw from the marketplace.

The measure of resistance to heat flow..

Refers to the property of a thermodynamic system in which all parts of the system have attained a uniform temperature which is the same as that of the system's surroundings.

A type of system that uses circulating pumps and fans to collect and distribute heat.

A property of an object which determines the direction of heat flow when the object is placed in thermal contact with another object.

What is Energy?

The ability to do work.

Process by which, in a fluid being heated, the warmer part of the mass will rise and the cooler portions will sink.

Individual fuel cells that are combined in series.

Individual fuel cells that are combined in parallel.

Stages a product goes through from concept and used to eventually withdraw from the marketplace.

The flow of electrical power or charge.

A property of an object which determines the direction of heat flow when the object is placed in thermal contact with another object.

Calculate the total resistance of the circuit.

531 ohms

103.1 ohms

5970 ohms

346.6 ohms

1020 ohms

475.5 ohms

1.31 ohms

1.333 in

0.750 in

0.667 in

0.849 in

1 in

8.378 in

A measure of the tendency of a force to rotate around a point.

Centroid

An indicator of the stiffness of a material related to its size and orientation. The higher the value, the harder it is to make an object bend.

Free Body Diagram

The geometric center of an object.

Moment

An indicator of the stiffness of a material related to its material properties. The higher the value, the harder it is to make an object bend.

Static Equilibrium

A diagram that shows all of the forces acting on an object.

Modulus of Elasticity

When an object is at rest or is moving at a constant velocity.

Moment of Inertia

A machinist is using a 6 inch long wrench to tighten a 1/4 inch bolt. What is the moment (in foot-pounds) if he applies 175 pounds of force to the wrench?

43.75 ft-lb

262.5 ft-lb

-43.75 ft-lb

-153 ft-lb

-262.5 ft-lb

87.5 ft-lb

-87.5 ft-lb

153 ft-lb

If a 250 pound man walks on a 3" x 6" board (3" is the height) that is 5 feet long and deflects the board 0.25 inches, what is the modulus of elasticity?

333,333 psi

83,333 psi

193 psi

93 psi

451,675 psi

67,500 psi

24,412 psi

48 psi

If a vector is 30 degrees from the horizon and the force of the vector is 150 pounds, what is the x-component of the vector?

300 pounds

23.1 pounds

75.0 pounds

173.2 pounds

150 pounds

If you were standing in the middle of a 2" x 4" beam (the height is 4") across a 20 foot wide ditch, how much would the beam bend? Assume that you weigh 150 pounds and that the modulus of elasticity of the beam is 1.76 x 106 psi.

0.50 in

0.001 in

9.20 in

0.72 in

6.50 in

1.74 in

2.30 in

8.33 in

In the free body diagram, what is missing?

a horizontal reaction force and a vertical reaction force at B

a single horizontal reaction force at B

a single normal force at A

a single vertical reaction force at B

a single applied force at C 

16 in4

144 in4

1728 in4

6 in4

9 in4

432 in4

Two people are pulling on a boat trying to pull it out of the water. Each person has a rope attached to the front end of the boat. One person is pulling with 150 pounds of force straight out of the water (following the x-axis). The other person is pulling the boat with 200 pounds of force at a 45 degree difference than that of the first person. What is the resultant force applied to the boat?

206.1 pounds at a 43.3 degree angle from the positive x-axis

291.4 pounds at a 25.9 degree angle from the positive x-axis

141.42 pounds along the x-axis

323.9 pounds at a 64.1 degree angle from the positive x-axis

323.9 pounds at a 25.9 degree angle from the positive x-axis

350 pounds at a 45 degree angle from the positive x-axis

291.4 pounds at a 64.1 degree angle from the positive x-axis

350 pounds along the x-axis

To find the x-value and the y-value for the centroid of a right triangle, you do the following from the corner containing the right angle.

1/3 of the base and 2/3 of the height

2/3 of the base and 1/3 of the height

1/2 of the base and 1/3 of the height

1/2 of the base and 1/4 of the height

1/2 of the base and 1/2 of the height

1/4 of the base and 1/4 of the height

1/3 of the base and 1/3 of the height

Calculate the total energy transfer in Joules for a wall section measuring 3 m x 5 m by 0.03 m thick with a thermal conductivity of 0.10 J/(s*m*C). Opposing sides of the wall section have a temperature of 20 degrees Celsius and 15 degrees Celsius after one hour.

30,000,000 J

300,000 J

250 J

15,000 J

1,200,000 J

900,000 J

180,000 J

A block of aluminum at 90 degrees Celsius is placed in 2.00 liter (2 kg) of water at 15 degrees Celsius. Calculate the energy transferred to the water if the final temperature becomes 37 degrees Celsius. The specific heat capacity of water is 4186 J/(kg*C).

184,184 J

309,764 J

125,580 J

92,092 J

215,703 J

Given the information above, what is the R-value of the wall section at a point through the fiberglass batt? 

27.56

26.76

34.61

27.73

19

32.47

15.61

31.42

What is the total current in the given in a simple circuit with 3 resistors (413 ohms, 1.3 kilo-ohms, and 0.513 kilo-ohms)? 

594.3 amps

185.5 amps

0.0289 amps

0.0054 amps

2226 amps

0.0202 amps

414.813 amps

0.0114 amps

A student travels on a school bus in the middle of winter from home to school. The school bus temperature is 53 degrees Fahrenheit. The student's skin temperature is 92.4 degrees Fahrenheit. Determine the total energy transferred from the student's body during the 20 min ride to school due to electromagnetic radiation. Note: Skin emissivity is 0.90, and the surface area of the student is 1.60 m2. Don't forget to convert those temps to Kelvin!

6368 J

84,400 J

640,000 J

4271 J

514,000 J

115,440 J

310,700 J

221,900 J

3698 J

215,400 J

What unit is constant in a series circuit?

current

resistance

power

ohms

energy

valence electrons

voltage

RAy = 24.5 and RBy = 10.5

RAy = 81.7 and RBy = 45.3

RAy = 0 and RBy = 10.5

RAy = 70 and RBy = 105

Calculate the magnitude and direction of the resultant force.

70 N, 27 degrees CCW from positive x-axis

70 N, 73 degrees CCW from positive x-axis

47 N, 55 degrees CCW from positive x-axis

53 N, 44 degrees CCW from positive x-axis

47 N, 35 degrees CCW from positive x-axis

Find the reaction force at B.

295 lbs

266.67 lbs

1000 lbs

166.67 lbs

133.33 lbs

233.33 lbs

250 lbs

500 lbs

In the figure below, the Teenage Mutant Ninja Turtles are balancing on a beam waiting to destroy the Shredder. They are standing balanced in order from left to right: Leonardo (50N), Michelangelo (47 N), Donatello (29 N) and Raphael who didn't weigh in so we don't know his force. Determine Raphael's force in Newtons.

58.6 N

410 N

53.67 N

178 N

68 N

6.67%

0.15%

85%

30%

4.7%

16.8%