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
ArbitrLikvidat [17]
2 years ago
5

Why does a block of plastic released under water come up to the surface of water.

Physics
1 answer:
SCORPION-xisa [38]2 years ago
7 0

A block of plastic released under water will come up to the surface of the water because the density of the plastic is less than the density of water.

<h3>What is density?</h3>

Density is the amount of mass a substance contains per its unit volume. It means the number of particles that can be packed into a unit space of that substance.

<h3>How does density determine whether an object will float or sink?</h3>

When an object is immersed in a liquid, it experiences two forces - gravitational force and an upward buoyant force called upthrust. If the density of the object is more than the density of the liquid, gravitational force will be greater than upthrust and the object will sink, but if the density of the object is less than the density of the liquid, upthrust will be greater than gravitational force and the object will float. That is why a block of plastic will come up to the surface when released under water, because it is less dense than water.

Learn more about density here:

brainly.com/question/6329108

#SPJ4

You might be interested in
A car has positive acceleration. What information can you infer from this? A- The car is changing direction. B- The car is speed
kvv77 [185]

Answer:

answe is b

Explanation:

A positive acceleration is defined as change of velocity upwards the direction that the object has taken. Therefore, a car having a positive acceleration means that the car is speeding up in the same direction as it traveling.

5 0
3 years ago
Read 2 more answers
Define resistance and resistivity and also give the relationship between t
daser333 [38]
It is a fundamental property of a material and tells how strongly the material is opposing the current. The resistance is related to resistivity by the relation, R=ρAl. The resistivity of a material depends on temperature. It increases with the increase in temperature and decreases with the decrease in temperature.HOPE THIS HELPS!!!
4 0
3 years ago
At what time of day would you be most likely to find that the air over water is significantly warmer than the air over land near
Brut [27]

This would happen later at night or early in the morning.

The reason being land becomes warm and cold quicker than the water because of the heat capacity. So during the day water warms up because of sunlight but at night the land becomes a lot cooler as compared to the water which is still war. So the air over water is significantly warmer than the air over land.

4 0
3 years ago
Read 2 more answers
The question is in the picture. :)
NISA [10]
Player A needs the least amount of energy. The ball is light weight and she is closest to the goal so the momentum need to kick the ball will be the least and the distance is has to travel is the shortest. But player C needs the most amount of energy. The ball is heavy so it will take the most momentum to move the ball and over such a long distance. Hope this help idrk.
5 0
3 years ago
John ( body mass= 65 kg) is taking off for a long jump . Horizontal accerleration ax is 5m/s^2 and vertical acceleration ay is 0
cestrela7 [59]

Answer:

(a) The horizontal ground reaction force  F_{g,x}=325\, N

(b)  The vertical ground reaction force F_{g,y}=696\, N

(c)   The resultant ground reaction force F_g=768\, N

Explanation:  

Given

John mass , m = 65 kg

Horizontal acceleration , a_x= 5.0 \frac{m}{s^{2}}

Vertical acceleration , a_y=0.9 \frac{m}{s^{2}}

(a) Using Newton's 2nd law in horizontal direction

F_{g,x}=ma_x

=>F_{g,x}=65\times 5\, N=325\, N

Thus the horizontal ground reaction force  F_{g,x}=325\, N

(b) Using Newton's 2nd law in vertical direction

F_{g,y}-mg=ma_y

=>F_{g,y}=mg+ma_y

=>F_{g,y}=65\times (9.81+0.9)\, N=696\, N

Thus the vertical ground reaction force F_{g,y}=696\, N

(c)  Resultant ground reaction force is

F_g=(F_{g,x}^{2}+F_{g,y}^{2})^{\frac{1}{2}}

=>F_g=(325^{2}+696^{2})^{\frac{1}{2}}\, N=768\, N

=>F_g=768\, N

Thus  the resultant ground reaction force F_g=768\, N

5 0
3 years ago
Other questions:
  • The planet Jupiter orbits the Sun at a nearly constant speed. Which of the following statements are true?
    7·1 answer
  • How do I figure out if the acceleration is negative, positive or zero ?
    13·1 answer
  • URGENT HELP PLEASE WILL AWARD BRAINLIEST!!!!!
    15·1 answer
  • What are the factors affect the vapor pressure of a liquid?
    12·1 answer
  • What is the largest-aperture Earth-based telescope currently in use at visible wavelengths?
    15·1 answer
  • A insect is resting on the rim of a rotating table topper the topper is stopped after covering 125° and 1.3s later. What was the
    15·1 answer
  • The astronomer Kepler develop the three laws a planetary motion what is meant by the love distance. Relationship
    8·1 answer
  • Helpppp!! On which surface is the student not able to move the box?
    6·1 answer
  • A vertical wall (8.7 m x 3.2 m) in a house faces due east. A uniform electric field has a magnitude of 210 N/C. This field is pa
    9·1 answer
  • A place kicker kicks a football with a velocity of 30.0
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!