Reducing friction in a machine
a. decreases its actual machine advantage
b. decreases the work output
c. increases its efficiency
d. increases its ideal mechanical advantage

i will name you brainliest if you get it correct

How does the amount of energy required to hold each proton and neutron in the nucleus compare to the energy released when they are removed?

Karen is running forward at a speed of 9 m/s. she tosses her sweaty headband backward at a speed of 20 m/s. the speed of the headband, to the nearest whole number relative to a stationary observer watching karen

Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.