A merry-go-round has a mass of 1415 kg and a radius of 6.4 m. How much net work (in J) is required to accelerate it from rest to a rotation rate of 1.00 revolution per 7.00 s? Assume it is a solid cylinder.

What name is given to the elements that appear in the right-most column of the periodic table? Question 11 options: Alkali metals Noble gases Transition metals Alkaline earth metals

The Universal Law of Gravity states that the force of gravity acts between all objects. Nonetheless, you never feel that the fridge in your kitchen pulls you toward it. Why?

When you catch a baseball, what kind of work do you do, negative or positive? By catching the baseball, what do you change? Does the baseball gain or lose energy? What kind of energy?

A young boy of mass m = 25 kg sits on a coiled spring that has been compressed to a length 0.4 m shorter than its uncompressed length and then held at this length. Suddenly the spring is released, and the boy flies vertically into the air.

In order to prevent muscle contraction from misaligning bones during healing (which can cause a permanent limp), injured or broken legs must be supported horizontally and at the same time kept under tension (traction) directed along the leg.

How do evaporation and condensation relate to heat

Resistance = 0.1 ohm Current = 60 amps Voltage = ? 0.6 6 60 600

The velocity of a roller coaster as it moves down a hill is where v0 is the initial velocity and h is the vertical drop in feet. An engineer wants a new coaster to have a velocity of 90 feet per second when it reaches the bottom of the hill.

What are sun spots?

Identify characteristics of objective personality tests. -self-report -scientific -paper-and-pencil -questions about behavior -objective -potentially biased answers Multiple Choice-Psychology