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iren2701 [21]
2 years ago
13

when a metal sphere is dropped in to a tall cylinder containing liquid its acceleration is g÷2 (gravity over 2) show that : dens

ity of metal =2density of liquid​
Physics
1 answer:
Mamont248 [21]2 years ago
3 0

The density of the metal is twice the density of liquid since acceleration, a is half of accelerating due to gravity, g.

<h3>What is the relationship between acceleration and density?</h3>

For a solid falling through a viscous fluid, the acceleration of the object decreases until it attains terminal velocity.

The acceleration of the body increases with increase in density of the solid.

When density of solid = density of liquid, acceleration a = g

When density of solid = 2 × density of the liquid, acceleration a = g/2.

Therefore, the density of the metal is twice the density of liquid since acceleration, a is half of accelerating due to gravity, g.

Learn more about density and acceleration at: brainly.com/question/1156422

#SPJ1

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Siska hit a golf ball into the air with an initial velocity of 56 feet per second. The height h in feet of the ball above the gr
olasank [31]
To find the time it takes for the ball to reach the given height, we need an equation that relates the height and time it travel which is given to be <span>h=-16t^{2}+56t. We just substitute the height of 49 feet then solve for t. We do as follows:

</span><span>h=-16t^{2}+56t
49 = </span>-16t^{2}+56t
t = 1.75 seconds

Hope this answers the question. Have a nice day.
4 0
3 years ago
Read 2 more answers
“You can’t get more energy from a machine than the amount of energy you put into it,” is one way of stating the law of conservat
goldenfox [79]

Answer:

Energy

Explanation:

One ways of stating the law of conservation of energy is that "you cannot get more energy from a machine than the amount of energy you put into it".

The law of conservation of energy states that in a system, energy is neither created nor destroyed but transformed from one form to another.

The energy in a system does not increase based on the premise of this law.

  • The efficiency of a machine can reduce but the energy is always conserved.
  • This is because energy is transformed to other forms.
5 0
3 years ago
When fossil fuels are burnt, what 2 gases are given off?
Mkey [24]
Salutations!

When fossil fuels are burnt, what 2 gases are given off?

When fossil fuels are burnt, the following are one of the two gases when they are given off:

→ Carbon dioxide: Carbon dioxide is a green house gas, and plays a major role in the global warming.

→ Carbon Monoxide: Carbon monoxide is a gas that is dangerous to human beings when released.

Hope I helped (:

Have a great day!
6 0
3 years ago
Calculate the Work done if the force is 2000 Newtons<br> and the distance is 5 km.
kodGreya [7K]

Answer:

10 million joules or 10,000 KJ

Explanation:

Work= Force x Displacement

convert 5km into meters -5km=5000m

W= 2000N x 5000m

w=10,000,000 Joules

or 10,000KJ

4 0
2 years ago
2. Before 0.5-kg ball is dropped from a third story window 20 m above the sidewalk. What is the potential
Flauer [41]

Answer:

C

Explanation:

C

20*9.8*0.5

98

4 0
3 years ago
Read 2 more answers
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