Physics, 27.03.2020 21:38 u8p4

A student uses a pencil as a lever to launch a piece of trash into the trashcan. If the student positions a marker as the fulcrum just 2.8 cm from where she applies effort, and 7 cm from the piece of trash to the fulcrum, what is the mechanical advantage the lever gives?

Formulas:
Mechanical advantage = effort distance/resistance distance
Mechanical advantage = resistance force/effort force
Work = force × distance

Your

A) .4

B) 2.5

C) 4.2

D) 19.6

Answers: 2

Show answers

Other questions on the subject: Physics

Physics, 21.06.2019 20:30, blessingjessica

Air enters a compressor operating at steady state at 1.05 bar, 300 k, with a volumetric flow rate of 93 m3/min and exits at 12 bar, 400 k. heat transfer occurs at a rate of 15.5 kw from the compressor to its surroundings. assuming the ideal gas model for air neglecting kinetic potential energy effects, determine the power in put in kw.

Answers: 2

continue

Physics, 22.06.2019 08:00, khuak877

Why is it important always to use horizontal bars in unit fractions when performing unit conversions?

Answers: 3

continue

Physics, 22.06.2019 16:50, justkevin1231

Aresistor with an unknown resistance is connected in parallel to a 9 ω resistor. when both resistors are connected in parallel to an emf source of 21 v, the current through the unknown resistor is measured with an ammeter to be 4 a. what is the resistance of the unknown resistor? answer in units of ω.

Answers: 3

continue

Physics, 22.06.2019 17:00, Jasten

Since the energy was not raising the temperature of the water during these segments, what was the energy used to do instead? your answer must include an explanation of what is happening to the molecules.

Answers: 3

continue

You know the right answer?

A student uses a pencil as a lever to launch a piece of trash into the trashcan. If the student posi...