What is the ratio of new rotational kinetic energy

Assignment Help Physics

Reference no: EM139211

Q1. The rotational inertia of a collapsing spinning star changes to 4/5 its initial value. What is the ratio of new rotational kinetic energy to the initial rotational kinetic energy (KEnew / KEi)?

Q2. A motorist drives south at 27.0 m/s for 3.90 min, then turns west and travels at 25.0 m/s for 2.40 min, and finally travels northwest at 40.0 m/s for 1.00 min. For this 6.40 min trip, find the values.

(a) Total vector displacement m (magnitude) south of west

(b) average speed

Reference no: EM139211

Questions Cloud

What is the atc at that output : Illustrate what output does the low point of ATC occur and illustrate what is the ATC at that output. Explain how your calculations.

What can you end about the relative speeds : A 1.8 kg ball of putty moving to the right has a head-on inelastic collision with the .50 kg putty ball moving to the left. If the combined blob doesn't move just after the collision, what can you end about the relative speeds of the balls before the..

Resulting deadweight loss relative : Illustrate what would be the size of the resulting deadweight loss relative to the competitive outcome.

Production function exhibits constant : Indicate whether this production function exhibits constant, increasing, or decreasing returns to scale.

What is the ratio of new rotational kinetic energy : A motorist drives south at 27.0 m/s for 3.90 min, then turns west and travels at 25.0 m/s for 2.40 min, and finally travels northwest at 40.0 m/s for 1.00 min. For this 6.40 min trip, find the values.

Suppose that the ship is at rest in the water : What is the wavelength of the waves emitted by source? What is the difference in frequency between directly radiated waves and the waves reflected from a whale travelling straight toward the ship at 4.99? Suppose that the ship is at rest in the water..

Angular orbital speed is the same as that of mercury : A 48.9 kg pole vaulter running at 13.0 m/s vaults over the bar. Assuming that the vaulter's horizontal component of velocity over the bar is 1.7 m/s and disregarding air resistance, how high was jump.

What is the body temperature in degree celsius : The pulley system is used to lift a 52 kg crate. Note that one chain connects the upper pulley to the ceiling and a second chain connects the lower pulley to crate. assume the masses of the chains, pulleys, and ropes are negligible, conclude the forc..

How long does the object take to hit ground : A child's water pistol shoots water through a 1.8 mm-diameter hole. If the pistol is fired horizontally 78 cm above the ground, the squirt hits the ground 1.8 m away. What is the volume flow rate through the squirt? Ignore air resistance.

User Account

All Pages