Questions from College Physics

Q: The speed of a satellite in circular orbit around a planet does

The speed of a satellite in circular orbit around a planet does not depend on the mass of the satellite. Does it depend on the mass of the planet? Explain.

Q: The reaction rate for the prepupal development of male Drosophila is temperature

The reaction rate for the prepupal development of male Drosophila is temperature-dependent. Assuming that the reaction rate is exponential as in Eq. (13-41), the activation energy for this development...

Q: A crate of books is to be put on a truck by

A crate of books is to be put on a truck by rolling it up an incline of angle θ using a dolly. The total mass of the crate and the dolly is m. Assume that rolling the dolly up the incline is the same...

Q: Consider the sphere and ring of Problem 20. What must the

Consider the sphere and ring of Problem 20. What must the final temperature be if both the ring and the sphere are heated to the same final temperature?

Q: How high can you suck water up a straw? The

How high can you suck water up a straw? The pressure in the lungs can be reduced to about 10 kPa below atmospheric pressure.

Q: The reaction rate for the hydrolysis of benzoyl-L-arginine

The reaction rate for the hydrolysis of benzoyl-L-arginine amide by trypsin at 10.0°C is 1.878 times faster than that at 5.0°C. Assuming that the reaction rate is exponential as in Eq. (13-41), what i...

Q: Suppose due to a bad break of your femur, you require

Suppose due to a bad break of your femur, you require the insertion of a titanium rod to help the fracture heal. The coefficient of linear expansion for titanium is α = 8.6 × 10−6 K−1, and the length...

Q: At high altitudes, water boils at a temperature lower than 100

At high altitudes, water boils at a temperature lower than 100.0°C due to the lower air pressure. A rule of thumb states that the time to hard-boil an egg doubles for every 10.0°C drop in temperature....

Q: A certain acid has a molecular mass of 63 u. By

A certain acid has a molecular mass of 63 u. By mass, it consists of 1.6% hydrogen, 22.2% nitrogen, and 76.2% oxygen. What is the chemical formula for this acid?

Q: Estimate the mean free path of a N2 molecule in air at

Estimate the mean free path of a N2 molecule in air at (a) sea level (P ≈ 100 kPa and T ≈ 290 K), (b) the top of Mt. Everest (altitude = 8.8 km, P ≈ 50 kPa, and T ≈ 230 K), and (c) an altitude of 3...