A mass (10 kg) is at rest on a surface (Ustatic=0.6 Mkinetic=0.3)
connected by a cord to a
hanging mass of 3 kg. The
connecting cord is
mass-less and stretch-free.
The pulley is mass-less
and frictionless. What is
the force of friction on
the heavier mass? (Work needed)

Which would not reduce the amount of green house gasses in the air

To run the physics cart, the fan speed of the cart is manipulated. this is the (blank) variable. the cart accelerates due to the speed of the fan. acceleration is therefore the (blank) variable. a “constant” is a parameter that stays the same regardless of the variables. one parameter of the cart that is held constant is the (blank) .

Holes drilled several kilometers into earth’s crust provide direct evidence about earth’s interior in the form of