What causes the increase in pitch as an ambulance siren moves toward you? the sound waves become compressed. the amplitude of the sound waves changes. the sound waves spread farther apart. the speed of the sound waves changes?

A horizontal force of magnitude 41.6 n pushes a block of mass 4.03 kg across a floor where the coefficient of kinetic friction is 0.614.

90 percent if amphibians are ... ? (Choose all that apply) a. Frogs b. Toads c. Newts d. Salamanders e. Caecillans

A 12 v battery produces a current of 6 amps. what is the resistance

Smell and taste are the two senses that are stimulated by chemicals.

A man on the moon with a mass of 90 kilograms weighs 146 newtons. The radius of the moon is 1.74 x 106 meters, find the mass of the moon. a) 7.36 x 10^ (28) kg b) 2.4 x 10^ (10) kg c) 7.36 x 10^ (22) kg d) 1.43 x 10^ (4) kg

Which of the following objects would have the most inertia? A. A sphere with a radius of 5 cm and a mass of 34 grams. B. A sphere with a radius of 4 cm and a mass of 15 grams. C. A sphere with a radius of 8 cm and a mass of 27 grams. D.

A boy slides a book across the floor using a force of five and over a distance of 2M what is the kinetic energy of the book after he slides at assume there is no friction

Where would aliens be if they really do exist here on Earth?

If the mass of an object is 84g and the volume is 12cm3 what is the density

Describe one example of competiton of tropical dry forest