1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Alina [70]
3 years ago
5

1-. CONTESTE FALSO (F) O VERDADERO

Biology
1 answer:
jeka57 [31]3 years ago
6 0

Answer:

A) Falso, cuando un resorte se estira, este comienza a acumular energía potencial. Al soltar el resorte, este tratara de volver a su forma natural, consumiendo la energía potencial y transformándola en energía cinética.

B) Falso. Potencia esta definido como la cantidad de trabajo efectuado por unidad de tiempo, a mayor potencia, mas rápido se completa un trabajo.

C) Verdadero, el trabajo es escalar, pues resulta de un producto punto entre dos vectores, la fuerza y el desplazamiento.

D) Falso, el cambio en la energía cinética de un cuerpo es igual al trabajo neto aplicado sobre ese cuerpo. Es decir, si le aplico trabajo a un cuerpo, estoy cambiando su energía cinética.

E) Falso, la fuerza del vagón sobre los pasajeros NO es constate, ya que esta fuerza esta relacionada con la velocidad a la que se mueve el vagón, y sabemos que la velocidad del vagón va cambiado durante el trayecto (podemos experimentar esta fuerza al pasar de una horizontal a una pendiente muy pronunciada, ya que hay un gran cambio de velocidad, y si hay cambio de velocidad, hay aceleración, y por la tercera ley de Newton, si hay aceleración, hay fuerza), pero si es verdad que esta fuerza es un factor importante al diseñar una montaña rusa.

You might be interested in
Hairlessness in American rat terriers is recessive to the presence of hair. Suppose that you have a rat terrier with hair. Expla
Reil [10]

Answer:

By performing a test cross i.e. a cross with a recessive trait

Explanation:

According to the question, hairlessness is a recessive trait, meaning that it will only be expressed in a homozygous condition i.e. when there are two recessive alleles in the genotype. Presence of hair is dominant, meaning that it will mask the phenotypic expression of hairlessness allele in a heterozygous state. Hence, a dominant phenotype can either be homozygous (same dominant allele) or heterozygous (combination of dominant and recessive alleles).

In order to determine which of these genotypes the dominant phenotype possess, we perform a test cross. A test cross is a cross performed to determine the genotype of the dominant organism by crossing it with a homozygous recessive genotype.

Ideally, the offsprings resulting from the cross will all be phenotypically dominant if the organism in question is homozygous dominant but if the organism is heterozygous dominant, the offsprings will occur in an equal ratio of dominant to recessive phenotypes.

So in this case, all of offsprings of this cross between the rat terriers will possess hair if the dominant rat terrier dog is homozygous, but if the dominant rat terrier dog is heterozygous, an hairless offspring will be produced.

8 0
3 years ago
Some studies suggest that babies placed in full-time child care before __________ of age are more likely to display insecure att
Vesna [10]
Some studies suggest that babies placed in full-time child care before 3-5 years of age are more likely to display insecure attachment in the strange situation. <span>Attachment is the emotional bond between the child and the parent. Hope this answers the question.</span>
5 0
3 years ago
Alike between pathogens and antibodies
amid [387]
They both deal with diseases just that pathogens cause disease while antibodies fight against disease
8 0
3 years ago
Which of the following might be a pioneer species in an area where there was recently a lava flow? Choose all that apply. Select
Stella [2.4K]

The answer is most likely to be lichen.

8 0
3 years ago
What is sex explain the procedure​
Lina20 [59]

Answer:

It’s where you get a girl and boy together then they have sex

Explanation:

3 0
3 years ago
Other questions:
  • Heartworms are an example of what types of parasite?
    11·2 answers
  • 4. What are the advantages of a nonspecific defense?
    14·1 answer
  • How many megawatt hours (MWh) per year of savings did the students identify for computers at the Penn State Mueller Laboratory B
    10·1 answer
  • Marie is a 63-year-old African American woman from the Midwest. She is lactose intolerant and prefers staying indoors as opposed
    8·1 answer
  • Distinguish between first-generation pesticides and second-generation pesticides used by people to combat pests, and give an exa
    15·1 answer
  • nsulin functions in the body by: Select one: a. metabolizing glucose to make energy. b. enabling glucose to enter the cells. c.
    10·1 answer
  • The structure composed of a sheet of simple squamous epithelial cells that's folded onto itself to form a double layer is a
    14·1 answer
  • Chargaff's rules of base pairing are explained by which structural feature of DNA? A. Each strand of DNA contains a phosphate an
    8·2 answers
  • HELP ASAP PLSSSSSSSSSSSS
    13·2 answers
  • In 1831, Charles Darwin visited the Galapagos Islands While observing the giant land tortoises that lived on these islands, Darw
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!