Which compound contains both ionic and covalent bonds? a.) CaCo3 b.) PCl3 c.) MgF2 d.) CH2O

A boy is twirling a model airplane on a string 4 feet long. if he twirls the plane at 0.25 revolutions per minute, how far does the plane travel in 4 minutes? round to the nearest tenth.

Two objects of masses 100g and 200g are moving along the same line and direction with velocities of 2 m/s and 1 m/s respectively. They collide and after the collision, the first object moves at a velocity of 0.5 m/s.

What is the volume of a board that measures 1.8cm by 8.8cm by 30.5cm?

The force of gravity decreases at a constant rate as we move away from a planet like Jupiter. True or false

why are the group 17 elements the most reactive of the nonmetal elements a) they are the biggest elements b) they have the fewest electrons c) they are located on the farthest right side of the periodic table d) they require only one electron to

Oil having a density of 924 kg/m 3 floats on water. A rectangular block of wood 3.79 cm high and with a density of 970 kg/m3 floats partly in the oil and partly in the water. The oil completely covers the block.

Where does the energy that is used to ride a bicycle up a hill come from and how is it classified?

Explain how the energy of a rubber ball is transformed as it rolls down a ramp.

Which type of friction acts on an object that is not moving? static friction fluid friction sliding friction rolling friction

A substance maintaining a uniform appearance throughout