If steel is more dense that lake water, why can a boat float

A rabbit hears the cry of an owl. It responds by freezing in place, completely motionless. Which of the rabbit's systems must coordinate for the rabbit to respond with this behavior?

Examine Conceptual Example 3 before addressing this question. A wave moves on a string with a constant velocity. Does this mean that the particles of the string always have zero acceleration?

A 120 V potential difference is applied to a space heater that dissipates 674 W during operation. (a) What is its resistance during operation? (b) At what rate do electrons flow through any cross section of the heater element?

Assume your mass is 60 kg. The acceleration due to gravity is 9.8 m/s 2. How much work against gravity do you do when you climb a flight of stairs 2.9 m high? Answer in units of J.

You serve a volleyball with a mass of 2.1 kg. the ball leaves your hand with a speed of 30 m/s.

What happens to the force of gravitational attraction if the distance between two objects increase?

How are molecules in a neutral state different from ions?

What is a hypothesis for why mitochondrion has separate dna from the nuclease?

An airplane flies 1350km in 2 1/4 hours. What is its average speed in kilometers per hour?

A projectile is launched over a horizontal surface in such a manner that its maximum height is 3/5 of its horizontal range. Determine the launch angle.