Answer:The kinetic energy of the water molecules decreases. ... The motion of the particles in the substance decreases, and the temperature of the substance increases.
Explanation:
Answer:
a. The disk
b. Because it has the smallest rotational inertia
Explanation:
a. Which object do you expect to reach the bottom of the inclined plan first?
I would expect the disk to reach the bottom first.
b. Why?
This is because the disk has the smallest rotational inertia.
The rotational inertial of the hollow sphere, disk and ring are 2/3MR², 1/2MR² and MR² respectively.
Since the three objects are rolling from the same height, they have the same mechanical energy.
But, since the disk has the smallest rotational inertia, it would have the smallest rotational kinetic energy and largest translational kinetic energy. The disk's smaller rotational kinetic energy will cause to rotate less but translate more than the other objects and thus reach the bottom first.
A) 17.9 cm
We have:
is the focal length of the mirror (for concave mirror, the focal length is positive)
is the distance between the object and the mirror
is the distance between the image and the mirror
We can then use the mirror equation to find q:
B) -5.0 cm
The height of the image can be determined by using the magnification equation:
where
is the heigth of the image
is the height of the object
Substituting and re-arranging the formula, we find
And the negative sign means the image is inverted.
Answer: U = 120 m/s
v = 0
t = 0.01 s
a = (v-u)/ t = -120 / 0.01 = -12000 m/s
a) S = (v² - u²)/2a = -120² / 2*(-12000) = 120 / 200 = 0.6 m
distance of penetration is 0.6m
b) force = ma = 0.005×12000 = 60N
The peak speed of Steve races in kilometer per hour is 2.423 km/h.
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<h3>What is peak speed?</h3>
Peak speed is the maximum change in the distance traveled by an object over a period of time.
The given peak speed;
V = 67.3 cm/s
The peak speed is converted to kilometer per hour as follows;
Thus, the peak speed of Steve races in kilometer per hour is 2.423 km/h.
Learn more about speed conversion here: brainly.com/question/2681210