When an ambulance drives by your house with sirens blaring, the sound waves of the sirens are (space) as it approaches and (space) as it sppeds away

Your friend comes back to school after a week of being sick. She tells you that she wasn't quite able to talk during that time. Which organ was responsible for her inability to emit (release) sounds to talk?

True/false: a single atom of an element in molecular and empirical formulas does not require a subscript

Tommy was walking at a rate of 4 miles/hour at noon and at 12:30 pm he was walking at a brisk rate of 6 miles/hour. Two hours later Tommy was walking at a leisurely rate of 2 miles/hour. Which statement about Tommy's accleration is true?

Radioactive was discovered by Albert Einstein Truth or False Need answer

If a polythene rod is rubbed with a dry cloth, what kind of charge would it gain? A) positive, due to extra protons. B) positive, due to electrons lost. B) negative, due to protons lost. D) negative, due to extra electrons.

The intrapleural pressure is - 4 mmHg relative to atmospheric and the transpulmonary pressure is 5 mmHg relative to atmospheric.

A hot-air balloon is 150 feet above the ground when a motorcycle passes directly beneath it (traveling in a straight line on a horizontal road). The motorcycle is traveling at 40 mph.

How do I calculate initial speed by using the slope of a graph? The graph shows the relationship between S { (sin2ϴ) / g} and the average range of a projectile in meters.

You push a 50 kg wooden box across a wooden floor at a constant speed of 1.0 m/s. The coefficient of kinetic friction is 0.15. Now you double the force on the box. How long would it take for the velocity of the crate to double to 2.0 m/s?

A star is in hydrostatic equilibrium when the outward push of pressure due to core burning is exactly in balance with the inward pull of gravity.