Peas can both cross-pollinate and self pollinate. why was this a key factor in Mandela work

once a hypothesis is tested an confirmed and then tested again and confirmed again by many others, it may provide the basis for, or become a part of, a what?

A 10 kg box is pushed with a force of 20N. What is the box's acceleration? 200 m/s 2 m/s2 2 m/s 200 m/s2

How can food handler identify food that has been contaminated with pathogens

A string vibrates at a frequency of 20 Hz. what is its period?

In one day, a 75-kg mountain climber ascends from the 1500-m level on a vertical cliff to the top at 2400 m. The next day, she descends from the top to the base of the cliff, which is at an elevation of 1350 m.

Newton's First Law of Motion states that an object will remain at rest or in uniform motion in a straight line unless acted upon by an external force change the motion. This is sometimes called the law of

In which type of wave is energy transferred through the vibration of particles?

What objects are found in the sloar system solar system

For slowly moving objects, the drag force in water is approximately proportional to the speed of the object. The Escherichia coli (E. coli) bacterium propels itself slowly through water by means of long, thin structures called flagella.

How do electric and magnetic fields interact to create electromagnets?