You swing a 2.2 kg stone in a circle with radius 75 cm. At what speed do you need to swing it so its centripetal acceleration will be 9.8 m/s?

2.7 m/s

8.6 m/s

27.1 m/s

7.35 m/s

An object is allowed to fall freely near the surface of an unknown planet. The object falls 72 meters from rest in 4.0 seconds. The acceleration due to gravity on that planet is

How your body is cooled when you perspire

What is the correct SI unit for the vertical axis?

An adiabatic closed system is accelerated from 0 m/s to 30 m/s. Determine the specific energy change of this system, in kJ/kg.

Which statement best summarizes Niels Bohr's complementarity principle?

Which of the following is true about cells? A. Cells have specialized components that perform different, specific functions. B. A cell's components are all identical and perform the same function. C.

How much heat is contained in 100 kg of water at 60.0 °C?

Which of the following statements is the best definition of weather? Weather is the current conditions in the atmosphere. Weather is the usual conditions in the atmosphere. Weather is the average conditions in the atmosphere.

Analyze: In the series circuit what characteristic was common throughout the experiment? What changed as you added more light bulbs?

StA A boat takes off from the dock at 2.5 m/s and speeds up at 4.2 m/s2 for 6.0 s. How far has the boat traveled? Round your answer to the nearest whole number.