SCIENCE CALCULATIONS AND ELECTRICITY BASICS-ASSIGNMENT 1

Utilizing Engineering Materials:

What is a crucial consideration when selecting engineering materials?

• The cost of the material
• Material properties and their impact on product performance
• The popularity of the material
• The color of the material

Calculating Force, Work, Energy, and Power:

If a force of 150 N is applied to an object and it moves a distance of 10 meters, what is the work done?

• 2000 J
• 500 J
• 1500 J (joules)
• 1000 J

Performing Motion Calculations:

A car accelerates from 10 m/s to 30 m/s in 5 seconds. What is its acceleration?

• 15 m/s^2
• 20 m/s^2
• 4 m/s^2
• 2 m/s^2

Tags

CCSS.8.EE.C.7B

Perform Force Moments Basic Calculations:

What is the formula for calculating torque (τ)?

• τ = r * F * cos(θ)
• τ = r / F * sin(θ)
• τ = r * F * sin(θ)
• τ = r + F * sin(θ)

Perform Friction Force Calculations:

If the coefficient of static friction is 0.5 and the normal force is 200 N, what is the static friction force?

• 50 N
• 300 N
• 150 N
• 100 N

Perform Density and Pressure Calculations:

Calculate the pressure exerted by a force of 300 N on an area of 0.03 m².

• 15000 Pa
• 10000 Pa
• 20000 Pa
• 5000 Pa

Apply Electricity Basics:

According to Ohm's Law, what is the formula for calculating current (I)?

• I = V + R
• I = V / R
• I = V - R
• I = V * R

Utilizing Engineering Materials:

What is a consideration for material selection based on environmental conditions?

• Cost, availability, and popularity
• Color, shape, and size
• Weight, texture, and flexibility
• Temperature, humidity, and exposure to chemicals or corrosive substances

Performing Motion Calculations:

If an object has an initial velocity of 5 m/s, an acceleration of 2 m/s², and moves for 6 seconds, what is its final velocity?

• 20 m/s
• 3 m/s
• 10 m/s
• 17 m/s

Tags

CCSS.8.EE.C.7B

Apply Electricity Basics:

If a resistor has a voltage of 24 V and a current of 2 A, what is its resistance?

• 6 ohms
• 12 ohms
• 18 ohms
• 30 ohms