A police car traveling at a speed of 30.0 meters per second sounds its siren, which has a frequency of 1.00 * 103 hertz. as the police car approaches a stationary pedestrian, the pedestrian detects a siren frequency of

Infrared radiation has wavelengths ranging from about 800 nm to 1 mm. what is the frequency of radiation of wavelength 960 nm? answer in units of s-1.

2. Which one of the following statements are true of the sample of matter described by Figure 1? a. As heat is added to the sample, its temperature always increases. b. The sample is melting between a temperature of about - 100°C and - 10°C. c.

A magnetic force can act on an electron even when it A) is at rest B) moves parallel to magnetic field lines C) both of these D) neither of these

When friction is reduced

What is the most important laboratory procedure to follow before entering the lab area?

Stephen buys a new mop he travels 3 km south and the. 4 km east and then 3km north how far does he need to go to get back. To where he started

The elements with the largest atomic radii are found in the

Students will explain, distinguish the difference between the 4 states of matter

Name one way that a mixture can be separated

The Huka Falls on the Waikato River is one of New Zealand's most visited natural tourist attractions. On average, the river has a flow rate of about 300,000 L/s. At the gorge, the river narrows to 20-m wide and averages 20-m deep.