Which medium below conducts sound the fastest?

A. a wall

B. Steel

C. Plastic

D. Cardboard

An airplane flying horizontally at a constant speed of 350 km/h over level ground releases a bundle of food supplies. Ignore the effect of the air on the bundle. What is the bundle's initial vertical velocity?

What type of bond does a water molecule form? Explain why it forms this type of bond.

2.0 mol of monatomic gas A initially has 5000 J of thermal energy. It interacts with 3.0 mol of monatomic gas B, which initially has 8000 J of thermal energy. (4+4 pts.) a. What is the average energy per atom at equilibrium? b.

A block of copper (c = 390 J/kg°C) is heated from 20.0 C to 60.0 C. How much heat (in J) is absorbed by the copper if its mass is 45.0 g?

You are an evolutionary biologist studying a population of bats in the rain forest in Brazil. Most of the population possesses moderate length wings, although some individuals have long wings and some individuals have short wings.

Which represents a deletion of the section of DNA shown here, a-c-t-g-g-a-t? A. A-c-t-a-t B. A-c-t-c-g-a-t C. A-t-c-t-g-g-a-t D. A-c-t-c-c-t-t

If a lamp has a resistance of 50 ohms and is operated by a p. d. of 10V, find the current flowing through it

The amount of energy in the universe is ... A) changing rapidly B) changing slowly C) barely changing at all D) remaining constant

How would be the number 54 be correctly produced in ASL

A thin rectangular piece of wood floats in water. You slowly pour oil with a density equal to that of the wood on the surface of the water until the height of the oil above the water is twice the height of the piece of wood.