Macromolecules
Electricity
Simple Machines
Speed
Velocity
100
A sugar, a phosphate group, and a nitrogen base form the building blocks of which organic compound?
nucleic acids
100
A toaster is plugged into a wall outlet that has a voltage of 110 volts. If the toaster’s resistance is 10 Ω, what current runs through the toaster?
11 amps
100
Which machine would be best used for lifting heavy objects over a direct vertical path?
Pulley
100
If an athlete runs at 9 km/h for 0.5 hours, how far will the athlete travel?
4.5 km
100
What is the velocity of the object at t = 3s?
2 m/s
200
What is the primary function of carbohydrates?
Storage of energy
200
What is the current in the circuit?
1.2 A
200
In which situation below does it take more work to move the box from the ground to the moving truck?
The same amount of work is done in both situations
200
How much time will it take for a person to walk the length of 100 m at a constant speed of 3.5m/s?
round*
29 s
200
Which line segment represents the time interval during which the object was moving at a constant speed?
Segment Y
300
Protein
300
What following statement can you make about how voltage, current, and resistance are related by Ohm’s law in these circuits?
As voltage increases, current increases and resistance stays the same.
300
A ramp with an actual mechanical advantage of 5 is used to move a 40-newton load. What input force is needed to push the load up the ramp?
8 N
300
What is the Average velocity during the interval 2 s to 3 s?
0 m/s
300
A car has an oil drip. As the car moves, it drips oil at a regular rate, leaving a trail of spots on the road. Which of the following diagrams of the car’s trail of spots shows the car slowing down at a constant rate?
400
Many plants have waxy coatings on some surfaces. This coating reduces water loss because it is not water permeable. This waxy coating is which of the following types of organic molecule?
Lipid
400
Based on Ohm’s law, which of the following statements explains what must happen when the voltage across a resistor is decreased?
The current through the resistor decreases
400
A ski lift carries people along a 270-meter cable up the side of a mountain. Riders are lifted a total of 90 meters in elevation. What is the ideal mechanical advantage of the ski lift?
3
400
What is the average speed of the object?
2 m/min
400
What inference can you make from this car about a cars motion?
The car is accelerating.
500
Which 2 structural formulas of organic compounds represent carbohydrates?
A and D
500
A student connects three identical light bulbs in parallel to a dry cell as shown below. What
happens when the student removes one of the light bulbs from its socket?
The other light bulbs remain on and will be equally bright.
500
If a simple machine decreases the amount of force required to lift an object, what is true about the distance the object moves?
The distance must increase
500
A race car travels at an average speed of 80 m/s in a race. The total distance of the race is 640,000 m. How long does it take the race car to finish the race?
8,000 s
500
The graph would most likely apply to which of the following events?
A car traveling at a constant speed applies its brakes and comes to a stop.