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What was the primary function of Enlightenment salons?

The Book of the Sea was a collection of what?

What is true about the relationship between the Creoles and the peninsulares in Latin America in the late eighteenth and early nineteenth centuries?

A 90-kg man stands in an elevator that is accelerating upward at 1.5 m/s^2. What is the force exerted by the man on the floor of the elevator? Show work.  

A 90-kg man stands in an elevator that is accelerating upward at 1.5 m/s^2. What is the force exerted by the man on the floor of the elevator? Show work.  

A particle with a mass of 4.9 × 10-20 kg is oscillating with simple harmonic motion with a period of 1.4 × 10-5 s and a maximum speed of 2.4 × 103 m/s. Calculate (a) the angular frequency and (b) the maximum displacement of the particle. Show work.

When a 25-kg crate is pushed across a frictionless horizontal floor with a force of 200 N, directed 20° below the horizontal as shown in figure, the magnitude of the normal force of the floor on the crate is: (show the work on whiteboard to camera)

A person pushes horizontally with a force of 220 N on a 55 kg crate to move across a level floor. The coefficient of kinetic friction between the crate and the floor is 0.35. Find the magnitude of the frictional force. Show all steps clearly.

Explain how the acceleration due to gravity changes as altitude increases above Earth’s surface. What would be g at infinity?

A police car is moving toward a stationary observer at a speed of 25 m/s while its siren emits a sound of frequency 500 Hz. If the speed of sound in air is 340 m/s, what frequency does the observer hear?