What is one characteristic of a sample of matter that indicates it is a pure substance?

Bats use ultrasound in echolocation. This sound is characterized by __low frequencylow amplitudehigh frequencyhigh amplitude

What best describes the difference between the second sound wave and the first

Yesemin is using a sugar cookie recipe with a flour to sugar ratio of 11: 6. To make one batch of cookies, 2.75 cups of flour are needed.

A 150 kg mass is on a cliff 50 m high. What is its potential energy? 9 How much work is done moving a 2.5 kg book to a shelf 3.0 m high? 10. A 150 pound man runs up a stairway 25 feet above ground level in 10 s. How much work did the man do?

Two particles (m1 = 0.20 kg, m2 = 0.30 kg) are positioned at the ends of a2.0-m long rod of negligible mass. What is the moment of inertia ofthis rigid body about an axis perpendicular to the rod and throughthe center of mass? A) 0.48 kg * m2B) 0.

I to fall in love with someone or to at least get a boyfriend

Is rain falling a contact or noncontact force

How does a concave lens differ from a convex lens?

Which object has the greatest gravitational attraction?

Masa samochodu wynosi 2000 kg. Siła parcia wywierana przez cztery koła na powierzchnię szosy wynosi: A. 2000 N B. 20000 N C. 500 N D. 5000 N szybko plis