A 140 g ball at the end of a string is revolving uniformly in a horizontal circle of radius 0.537 m. The ball makes 2.27 revolutions in a second. What is its centripetal acceleration?

Which of the following will receive electrical impulses next, after the structure indicated by the red arrow?

What is an ordered pair on a distance versus time graph? A-A pair of times B-A pair of distances C-A particular distance paired with a particular time D-A pair of average speed Question 19/ minle Choice Worth 3 noin

One leg of a Michelson interferometer contains an evacuated cylinder of length L, having glass plates on each end. A gas is slowly leaked into the cylinder until a pressure of 1 atm is reached.

Which of these best describes how an appropriate star chart is selected to locate objects in the sky? match the temperature and humidity of the air match the day and time of the year and location match the latitude and number of stars in the sky

The force of attraction that holds together positive and negative ions is called ain)

A car is traveling at vx = 20 m/s. The driver applies the brakes and the car decelerates at ax = - 4.0 m/s2. What is the stopping distance? A car is traveling at = 20. The driver applies the brakes and the car decelerates at = - 4.0.

Most earthquakes occur along or near the edges of the earth's

What can we say about the rock as it falls to Earth? A) It accelerates as it falls. B) It falls at a constant rate of speed. C) It is at a constant velocity as it falls. D) It accelerates until it reaches a peak velocity, then decelerates.

What is true about the nodes and antinodes of a standing wave?

A large truck loaded with scrap Stella weights 14 metric tons and is traveling north on the interstate heading for Chicago. It has been averaging 48km/h for the journey and has traveled over the 1450 km so far. It has just stopped to refuel.