What must be the orbital speed of a satellite in a circular orbit 740 km above the surface of the earth?

In a discussion person A is talking 1.2 dB louder than person B, and person C is talking 3.2 dB louder than person A. What is the ratio of the sound intensity of person C to the sound intensity of person B?

Determine the type of energy transfer when the motor of a fan is turned on. •Electrical energy is converted to mechanical energy •Electrical energy is converted to potential energy • Electrical energy is converted to heat and mechanical energy

What is the rate at which velocity changes

What happens to the acceleration of an object if the net force that acts on it triples in magnitude?

Which statement best describes the magnetic properties of a material? Magnetic materials have many spinning, unpaired electrons Paired electrons of magnetic materials can move to other atoms Electrons of magnetic materials are strongly held by

Which statement is correct about gasoline when it is burned? Heat energy is created by the gasoline. The total energy of the gasoline decreases. Chemical energy in the gasoline is destroyed. Chemical energy is transformed into heat energy.

The tilt of the Earth's axis of rotation changes over a period of 41,000 years. Which of these statements best predicts a long term effect of the changes in the tilt of the Earth's axis of rotation? a. The Earth's climate would change. b.

What do keratinized cells form?

Explain why Planck's introduction of quantization accounted for the properties of black-body radiation.

How and which waves travel either through a medium or a vacuum?