Bilingüismo

Artículos

• Classification of bodies: rigid, elastic or plastic (4842)
  11 de noviembre de 2019, por F_y_Q

  Classify the following objects into rigid, plastic or elastic bodies:
  a) The mechanism of a key on the computer keyboard.
  b) Sunglasses.
  c) A headband.
  d) A steel fork.
  e) The bristles of a toothbrush.
  f) Bread dough.

• Will do float silver over mercury?
  3 de enero de 2019, por F_y_Q

  Imagine that you heat a system with upper temperatures than the fusion points of silver and mercury. If you put in contact both substances, will do silver float over mercury? Look for the information that you need on the Internet and explain your answer.

• Time taken to cover a distance by car (3567)
  6 de mayo de 2016, por F_y_Q

  If the speed of a car is 75 km/h. How long does it take the car to cover a distance of 75 km?

• Time it takes for sunlight to reach the Earth (3165)
  21 de mayo de 2015, por F_y_Q

  There are 150 000 000 km between the Sun and the Earth. If the velocity of light in a vacuum is 300 000 km/s, how long does it take for light to reach the Earth?

• Classifying into laws and theories
  25 de diciembre de 2019, por F_y_Q

  Classify the next examples as laws or theories, considering the definition of each one. a) When the temperature rises, will be simpler to dissolve a solid into the water. b) The global warming is due to the excessive emissions of carbon dioxide, and other gases, to the atmosphere and it is the cause of many changes in the climates of the Earth. c) In a chemical reaction, the total mass of the initial substances is equal to the total mass of the final substances. d) A chemical reaction (…)

• Convertion of units: speed of a car (3600)
  8 de junio de 2016, por F_y_Q

  A car is moving in a straight path, covering 3 600 meters in 90 seconds. Determine the speed of the car, expressed in km/h.

• Time it takes for blood to cover 30 cm distance (3494)
  23 de febrero de 2016, por F_y_Q

  The speed of blood flow is 30 cm/s. Considering a vein as a straight path, how long will it take for blood to cover a distance of 30 cm?

• Mass of a piece of marble knowing its density and volume
  3 de enero de 2019, por F_y_Q

  What will be the mass of a piece of marble that occupies volume, if its density is ?

• Density of a sample of solid (4502)
  18 de abril de 2018, por F_y_Q

  A 15 mL sample of a solid is weighed, and the recorded mass is 29 g. What is the density of the solid?

• Types of forces: at a distance or through contact (4841)
  4 de febrero de 2020, por F_y_Q

  Indicate which of these phenomena are produced by forces at a distance and which are produced by forces through contact:
  a) The motion of a train due to magnetic levitation.
  b) The deformation of a spring when a weight is attached to it.
  c) The skidding of a car on a pool of water.
  d) The formation of the aurora borealis.
  e) The motion of a cupboard when pushed.