Answer:
4.
a) W = 750 J
b) W = 2250 J
c) t = 2 sec
5. Answered in explanation
Explanation:
4.
The formula of power is given as:
P = W/t
where,
P = Power
W = Work Done
t = Time Taken
a)
Here,
P = 750 W
t = 1 sec
W = ?
Therefore,
750 W = W/1 sec
<u>W = 750 J</u>
b)
Here,
P = 750 W
t = 3 sec
W = ?
Therefore,
750 W = W/3 sec
W = (750 W)(3 sec)
<u>W = 2250 J</u>
c)
Here,
P = 750 W
t = ?
W = 1500 J
Therefore,
750 W = 1500 J/t
t = 1500 J/750 W
<u>t = 2 sec</u>
<u></u>
5.
According to Kinetic Particle Theory, the molecules are tightly packed with each other, by strong inter-molecular forces and they can only vibrate at their position. While, molecules or particles in liquids have lesser attractive forces among them. They can move in layers and can take the shape of any container. <u>This is the reason why solid has a definite shape and liquid has none.</u>
Kinetic Energy is the energy an object has while moving. An example is a ball rolling down a hill
Explanation:
Mechanical waves are waves that requires a medium for their propagation. There are two types of mechanical waves:
- Transverse waves
- Longitudinal waves
Transverse waves are waves that propagates perpendicularly to their source. Examples are electromagnetic waves, ripple on water etc.
Longitudinal waves are waves that propagates parallel to their source. They move in a series of rarefactions and compressions along their path. An example is seismic p-waves
<span>The flower width data were collected at about the same time
every day. </span>
According to the research, the responder made with the same
query as this question it is:
<span><span>
1.
</span>The flower width data were collected at about
the same time every day. </span>
Why this choice because, the study is delving into the
effects of morning temperatures on flower width hence, if the scientists
collect flower at the same time –hour or minutes everyday during the period of
the study the variable of time is not allotted from sunrise period to high noon
since it defines time as morning, the variant of time is only inapt.
