Which of the following best describes a property of water?
2 answers:
Answer: C. Remaining liquid over a wide temperature range
Explanation: Water has a high specific heat i.e it requires a large amount of heat to raise the temperature of 1 gram of water through . This is because the molecules of water are associated through strong hydrogen bonds.
It is also an universal solvent as it can dissolve most of the substances in it due to its high dielectric constant.
The freezing point of water is , that is liquid water converts to solid form at
and the boiling point of water is
, that is liquid water converts to gaseous form at
. Thus it can remain in liquid form over the temperature range of
to
Water has a high surface tension as the molecules of water are held together by strong hydrogen bonds.
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The answer is 0.245N.
<h3>What is kinetic energy?</h3>- A particle or an item that is in motion has a sort of energy called kinetic energy. An item accumulates kinetic energy when work, which involves the transfer of energy, is done on it by exerting a net force.
- Kinetic energy comes in five forms: radiant, thermal, acoustic, electrical, and mechanical.
- The energy of a body in motion, or kinetic energy (KE), is essentially the energy of all moving objects. Along with potential energy, which is the stored energy present in objects at rest, it is one of the two primary types of energy.
- Explain that a moving object's mass and speed are two factors that impact the amount of kinetic energy it will possess.
(b) 0.100
For the block on the left,
∑=
–0.308N+0.245N=(0.250kg)a
a=−0.252 if the force of static friction is not too large.
For the block on the right, =
=0.490N. The maximum force of static friction would be larger, so no motion would begin, and the acceleration is zero
To learn more about kinetic energy, refer to:
#SPJ4
Answer:
maximumforce is F = mg
Explanation:
For this case we must use Newton's second law,
Σ F = m a
bold indicate vectors, so we will write it in its components x and y
X axis
Fₓ = maₓ
Axis y
Fy - W = m a
Now let's examine our case, with indicate that the bird is level, the force of the wings can have a measured angle with respect to the x axis, where the vertical component is responsible for the lift, let's use trigonometry to find the components
Cos θ = Fₓ / F
Fₓ = F cos θ
sin θ = Fy / F
Fy = F sin θ
Let's replace and calculate
F sin θ -w = m a
As the bird indicates that leveling at the same height, so the vertical acceleration is zero (ay = 0)
F sin θ = w = mg
The maximum value of this equation occurs when the sin=1, in this case
F = mg