Which of the following statements describes a way that simple machines make work easier?

reduce the amount of energy needed to perform a task

change the direction of the input force

reduce the size of the input force needed to perform a task

Pascal has 96 miles remaining to complete his cycling trip. If he reduced his current speed by 4 miles per hour, the remainder of the trip would take him 16 hours longer than it would if he increased his speed by 50%. What is his current speed?

The message refers to which of the following? A. The medium that carries the information B. The context of the communication C. Ideas, thoughts, and feelings being communicated. D. The receiver s response to the sender

Electric charge can accumulate on an airplane in flight. You may have observed needle-shaped metal extensions on the wing tips and tail of an airplane. Their purpose is to allow charge to leak off before much of it accumulates.

Based on the number of valence electrons, what is the correct formula when nitrogen bonds to hydrogen? A) NH2 B) NH3 C) NH4 D) N2H

Why a pond of water appears shallower than it actually is?

StA A boat takes off from the dock at 2.5 m/s and speeds up at 4.2 m/s2 for 6.0 s. How far has the boat traveled? Round your answer to the nearest whole number.

In Part A, you determined that the heat added to the coffee is what you got. If it takes 4.2 J of energy to raise the temperature of 1.0 mL of coffee by 1.0∘C, then it should take twice as much energy to raise the temperature of 2.

The brightness of a star depends on what three factors?

What is most likely the relationship between Mendel's rules of genetics and Darwin's idea of biological evolution? Mendel's genetics states laws that are now part of the theory of biological evolution.

Why would it be a problem if your household appliances were connected in a series circuit