A person standing on a rotating platform holds two weights, one in each hand. The person and platform initially rotate at 1.8 rad/s with their arms extended. The total moment of inertia of the system is 6.0 kg·m². The person then pulls the weights closer to their body, reducing the total moment of inertia to 2.5 kg·m². a) What is the new angular velocity of the system?b) If the person then extends their arms again and the moment of inertia increases to 5.0 kg·m², what is the new angular velocity?c) Explain why the angular velocity changes even though no external torque acts on the system.

A soccer player kicks a ball with an initial velocity of 25 m/s at an angle of 40° above the horizontal. The ball leaves the ground and lands at the same height. Ignore air resistance. a) How long is the ball in the air?b) How far horizontally does the ball travel?c) What is the maximum height reached by the ball?   (Type detailed steps)

A 10 kg box is pushed across a horizontal floor with a force of 50 N. The coefficient of kinetic friction between the box and the floor is 0.25. a) What is the frictional force acting on the box?b) What is the net force on the box?c) What is the acceleration of the box? show clear steps (type).

The viscosities (thickness) of magmas _____________ with increasing percentages of silica.  

Many research studies have connected volcanic activity to climate patterns on Earth. The two are indeed related. While humans are likely to have a far greater effect on the climate than volcanoes, volcanoes do impact the climate. Which of the following best describe how volcanoes effect the climate?

Which type of volcano usually has the least explosive eruptions?

Which of the following factors help determine whether a volcanic eruption will be violent or relatively quiescent (non-violent)? Choose all that apply

There is little to no igneous rock found naturally in emergent rocks of Florida. What does emergent mean? Well, it is the exposed part of Florida. What does this mean about the volcanic history of Florida?

Mr. Maio, a 58 y.o., recently experienced a heart attack and is talking about changing his job. The occupational therapist sees this as an opportunity for:

Driving rehabilitation is a form of therapy that plans, develops, and implements services for individuals with disabilities in order for the individual to drive, typically following what rehabilitative approach?