Litmus paper is made from water-soluble dyes which are extracted from lichens. This paper is used as an acid-base indicator. Which of these common household substances would turn blue litmus paper red?

starting from rest, a dog drags a 100.0 kg box for 3.00m as shown. The force diagram indicates the forces acting on the box. what is the work done by the dog?

How is the formula for finding the speed of a wave like the formula for finding the speed of a person running a race?

Consider a sphere of radius r, surface area a and volume v. suppose you double the radius to 2r. how does the new surface area anew and the new volume vnew compare to the old values?

What must differ between the atom of two different elements? Question 6 options: protons in the atom electrons in the atom neutrons in the atom protons and neutrons in the nucleus

Select the statement that correctly describes how light travels? A. Light can travel in a vacuum, and its speed is constant even if the light source is moving. B.

What type of friction is using chalk in the summer to draw on the ground in Copley square? Sliding friction Rolling friction static friction Fluid friction

Two energy resources that do not depend on the sun's energy

How much heat is givne out when 6.0g of water freezes at 0 degrees celcius the heat of fusion of water is 80.0 cal/g?

Which statement describes why ocean currents are considered convection currents? A) Warm water moves counterclockwise in the northern hemisphere B) Warm water rises and cold water moves in to replace it.

What kind of waves require a medium to travel? Question 6 options: Light Waves Mechanical waves All waves need a medium to travel Electromagnetic waves