1. What is the speed of sound in air that has a temperature of 90.0 °C?

When would the temperature and thermal energy of an object differ?

A lab assistant has been given data with units from an experiment to enter into the computer. Unfortunately, there are only numbers and no labels. Which of the following could be a wavelength? A. 10 m/s B. 20 Hz C. 30 cm D. 40 s

The magnetic field in a solenoid is. A circular wire of radius 8 cm is concentric with a solenoid of radius 2 cm and length d = 2 meter, containing 12000 turns. The current increases at a rate of 40 A/s. What is the emf in the wire?

A cheetah can run at a maximum speed 95.4 km/h and a gazelle can run at a max- imum speed of 74.4 km/h. If both animals are running at full speed, with the gazelle 83 m ahead, how long before the cheetah catches its prey? Answer in units of s.

The magnetic field 0.02 m from a wire is 0.1 T. What is the magnitude of the magnetic field 0.01 m from the same wire? A) 0.01 T B) 0.05 T C) 0.1 T D) 0.2 T

3. How is electric potential different than electric potential energy?

Ethan pushes a wooden box across a carpet floor then he pushes the same box across a smooth marble floor why does Ethan find it easier to push the box on the marble floor than carpet floor

Let's now apply our equations for the normal modes of open and closed pipes. On a day when the speed of sound is 345 m/s, the fundamental frequency of an open organ pipe is 690 Hz.

Suppose you are an observer standing on the Moon, looking back at Earth. If the moon is in the waxingquarter phase, what phase of the Earth would you see? A. waxing quarter B. full C. new D. waning quarter E. none; the Earth doesn't have phases

How many chromosomes will an elephant's sperm have?