How has the model of our solar system changed over time?

Stars are made in which of the following Nebulas Black holes Dark matter

What is the tangent function used to find and what are its units

A cart is uniformly accelerating from rest. Which of the following best describes the net force acting on the cart? a. Increasing b. Decreasing c. Zero d. Constant

Which of the following most likely happens when the temperature of a chemical reaction is increased? Molecules speed up? Molecules stop reacting? Reaction rate decreases? Chemical reaction stops?

A cheetah runs at a steady velocity of 60 km/h (16.7 m/s). Over a period of 5.0s, the cheetah increases its pace to 95 km/h (26.4 m/s). What is the average acceleration of the cheetah over this period? must show work.

A weather balloon is inflated to a volume of 2.2 x 10^3 L with 374 g of helium. What is the density of helium in grams per liter?

What is the result of a mutation during replication A: the strands are different B: the strands are identical c: the strands are broken D: the strands are continuous

What is ___ heating of a liquid__ gas to liquid

A gate in an irrigation canal is constructed in the form of a trapezoid 2 m wide at the bottom, 38 m wide at the top, and 2 m high. It is placed vertically in the canal so that the water just covers the gate.

A machine with a mechanical advantage of 10 is used to produce an output force of 250 newtons. What input force is applied to this machine