A bus travels 20 KM and 30 minutes what is average speed of the bus

Compare contrast plant and animal cells

Why is a compound as common as water considered a "weird" chemical substance?

What force holds the earth-moon system together?

3. When driving a car, the chemical energy in gasoline is converted to heat (thermal energy) in the engine. Most of this thermal energy is then converted to mechanical energy, which makes the car move. What happens to the rest of the thermal energy?

When Lisa placed a balloon to her ear, she was able to hear what her sister was whispering from the other side of the room. When she removed the balloon, she was no longer able to hear what her sister was saying.

A bicyclist rides with a constant speed of 7 m/s. What is his initial speed?

Which of these refers to tempo? a. pace of music or speed of beats per minute b. a consistent, periodic pulse that is separated into equivalent intervals of time c. placement of sounds at definite regular time intervals d.

What is the kinetic energy of a 3-kg ball that is rolling at 2 meters per second?

Two spheres are 1.02 km apart. one of the spheres has a mass of 57.0 kg, and the force of attraction between the spheres is 1.79 x 10-14 n. calculate the mass of the other sphere.

What is the effect on Earth's atmosphere of a strong solar flare?