When a glass rod is rubbed with silk and becomes positively charged,

a. electrons are removed from the rod.

c. protons are added to the silk.

b. protons are removed from the silk.

d. the silk remains neutral.?

Which of the following materials is not a fluid A. Air B. Cork C. Gasoline D. Water

Explain the process by which cell phones transmit data using energy and waves

Thalia is drafting a plan to move a large, perfect sphere concrete sculpture that is in front of her office building. Describe the considerations Thalia would need to make if she was drafting a plan to move the sculpture.

Atoms are mostly made up of what

If one newton of force accelerates a block at 1 m/s2. Predict what the acceleration would be if we applied twice the force to a very light container with 4 blocks in it? A) 0.5 m/s2 B) 1.0 m/s2 C) 4.0 m/s2 D) 8.0 m/s2

A measure of the energy of motion of the particles in a substance is its

What is the final velocity of the combined bumper cars A 225 kg red bumper car is moving at 3.0 m/s. It hits a stationary 180 kg blue bumper car. The red and blue bumper cars combine and hit a stationary green bumper car of mass 150 kg.

0.4-L glass of water at 20°C is to be cooled with ice to 5°C. The density of water is 1 kg/L, and the specific heat of water at room temperature is c = 4.18 kJ/kg·°C. The specific heat of ice at about 0°C is c = 2.11 kJ/kg·°C.

Regions in a sound wave where particles are farthest apart are called

What will happen to thermal condictivity of a substance if its thickness is doubled? Also give reason.