Biology
Biology, 31.08.2021 15:10, tati7149

In which case is potential energy increasing? A.
a 20 kilogram boulder rolls down a hill that is 430 meters high
B.
a weightlifter lifts a 20 kilogram barbell above his head
C.
a skydiver jumps from an airplane that is 4 kilometers above the Earth
D.
a spring of a dart gun launches a dart in a straight line from rest position

answer
Answers: 3

Other questions on the subject: Biology

image
Biology, 22.06.2019 00:30, loveagirl111puppy
On a recent expedition to a remote region of northern canada, scientists uncovered skeletal remains from about 100,000 years ago. surprisingly, all the skeletal remains, which included many species from differing biological families and spanned about two thousand years, showed evidence of experiencing temperatures in excess of 1000 degrees fahrenheit (or 538 degrees celsius). which of the following, if true, best explains the apparent paradox between the cold environment and the evidence of the bones experiencing hot temperatures? (a) chemical changes that naturally occur during the process of decay in only one north canadian species produce the same evidence of the species' skeletons being exposed to hot temperatures as the expedition scientists found. (b) a little over 103,000 years ago, a large fire is known to have occurred in northern canada. (c) strong evidence exists that as early as 70,000 years ago, homo sapiens around the world relied heavily on fire to cook animals. (d) in the same expedition and in roughly the same layer of excavation, scientists found rudimentary wood cutting and hunting tools used by early humans.
Answers: 3
image
Biology, 22.06.2019 07:30, claudioocampo5621
What evidence did mendel find that supported his law of independent assortment? a. some traits are controlled by several different genes. b. a trait can be passed on from a parent to an offspring. c. most traits have a dominant form and a recessive form. d. different traits are passed on independently of each other.
Answers: 3
image
Biology, 22.06.2019 10:10, kdfawesome5582
Which example describes a mutualistic relationship between organisms? young wasps prey on caterpillars. crabs eat the remains of dead fish. tapeworms feed on food in the intestines of cats ants protect a tree on which they feed.
Answers: 2
image
Biology, 22.06.2019 14:00, queenkimm26
The dense layer of connective tissue that surrounds an entire skeletal muscle is the
Answers: 1
Do you know the correct answer?
In which case is potential energy increasing? A.
a 20 kilogram boulder rolls down a hill th...

Questions in other subjects:

Konu
English, 27.01.2021 19:00
Konu
Mathematics, 27.01.2021 19:00