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Physical Science B
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Stored Energy Changes I Quick Check
1. A horseshoe magnet is moved toward a pile of iron shavings. The iron shavings divide and
24 answers
asked by
Connexus Student
19,206 views
1 Metal paper clips do not attract or repel each other. When an electromagnet is placed nearby, the paper clips can be observed
11 answers
asked by
carl
4,312 views
What is the mathematical representation of a machine’s efficiency?
3 answers
asked by
Colleen Kelley
204 views
In 1–2 sentences, describe an efficient simple machine.
3 answers
asked by
Colleen Kelley
315 views
So I do online schooling and i'm trying to take a test. Iv'e done most of the test by myself, but i'm stuck on a question. I
1 answer
asked by
Wallbrown
362 views
What equation can you use to calculate the mechanical advantage of a simple machine?
3 answers
asked by
Colleen Kelley
297 views
Harold uses an inclined plane to move a washing machine from the sidewalk into his house. The vertical distance from the
3 answers
asked by
Colleen Kelley
518 views
Sarah uses an inclined plant to load a chest into her truck. If she does 84 Joules of work, and the inclined plane is 3 meters
2 answers
asked by
Colleen Kelley
199 views
Alan will use a compound pulley to lift a crate from the floor of his garage to a storage shelf. The shelf is 3.5 meters above
3 answers
asked by
Colleen Kelley
312 views
To directly lift a crate 0.6 meters, Joaquin would need to apply 312 newtons of force. Instead, he uses a lever with a
3 answers
asked by
Colleen Kelley
250 views
Samantha builds a lever to lift objects in a science experiment. The load arm is 0.4 meters. If she wants the lever to have a
1 answer
asked by
Colleen Kelley
235 views
Luisa uses a nutcracker to crack walnuts. She has to squeeze the handles 12 centimeters to crack a walnut. The part of the arms
1 answer
asked by
Colleen Kelley
301 views
Mark needs to clean up a broken glass on the floor. He can use a hand brush or a broom. Why should he choose the broom?
3 answers
asked by
Colleen Kelley
228 views
What happens when you use a lever to lift a box?
2 answers
asked by
Colleen Kelley
212 views
Larry uses a lever to lift a box. Where does inefficiency occur in the lever?
3 answers
asked by
Colleen Kelley
350 views
Which is the best statement of the Law of Conservation of Energy?
3 answers
asked by
Colleen Kelley
138 views
In 1–2 sentences, explain how to calculate the efficiency of a toaster
3 answers
asked by
Colleen Kelley
253 views
A student uses a pulley to lift a log. In 1–2 sentences, explain how she can calculate the pulley’s efficiency
3 answers
asked by
Colleen Kelley
222 views
