Hich of the following equations is balanced correctly?

A.

2 C2H2 + 5 O2 → 4 CO2 + 2 H2O

B.

3 H2O → H2 + 3 O2

C.

2 C3H3 + O2 → 2 CO2 + H2O

D.

Cl2 + 2 KBr → KCl + Br2

A reflecting panel uses the kinetic energy of moving air

A professor sits on a rotating stool that is spinning at 10.0 rpm while she holds a heavy weight in each of her hands. Her outstretched hands are 0.785 m from the axis of rotation, which passes through her head into the center of the stool.

Balanced rock has a mass of about 36,000 kg. if the acceleration due to gravity is 9.8 meters per second squared, what is the force that the rock is exerting on its pedestal?

If you engage in seasonal sports, such as skiing, what should you do in the off-season?

A group of cells that grow very fast

Why dont girls go bald

As you identify concerns about child development, you'll use assessment to A. evaluate whether a child has a special need or disability. B.

Nodes give a vertebrate's back flexibility. A. True B. False

A common flashlight bulb is rated at 0.32 A and 4.3 V (the values of the current and voltage under operating conditions). If the resistance of the bulb filament at room temperature (20°C) is 1.

A 10N force is exerted on a box moving it 20m in the same direction what is the magnitude of work done on the box