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Cloud
1 month ago
13

Due to the evaporation of the jogger's sweat, the change in entropy of the universe is:

Physics
1 answer:
Keith_Richards [3.2K]1 month ago
7 0
The answer is a.
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Two identical balls are at rest and side by side at the top of a hill. You let one ball, A, start rolling down the hill. A littl
inna [3103]

Answer:

Option b. it has the same position and the same acceleration as A

Explanation:

Now, let's examine each statement:

a. it has the same position and the same velocity as A

At the moment B overtakes A, they share the same location. However, their velocities cannot match, or else ball B wouldn't be able to pass ball A. Thus, this statement is false.

b. it has the same position and the same acceleration as A

As established before, their positions coincide, and both balls are subjected to gravitational acceleration, making this statement true.

c. it has the same velocity and the same acceleration as A

While the accelerations are identical, their velocities differ, rendering this statement false.

d. it has the same displacement and the same velocity as A

Though they have traveled the same distance, their velocities are not the same, thus this statement is false.

e. it has the same position, displacement and velocity as A

While their position and displacement match, their velocities do not, so this statement is false.

Therefore, only option b is correct.

3 0
2 months ago
A typical human contains 5.00 l of blood, and it takes 1.00 min for all of it to pass through the heart when the person is resti
kicyunya [3294]
<span>(a) 0.0676 l (b) 67.6 cc We are given that 5.00 L of blood circulates through the heart every minute, with the heart beating 74.0 times per minute. Therefore, for each heartbeat, 5.00 L / 74.0 = 0.067567568 L of blood passes through. Rounding to three significant figures, the result is 0.0676 l. To convert liters to cubic centimeters, multiplying by 1000 leads to 67.6 cc of blood per heartbeat.</span>
5 0
1 month ago
Read 2 more answers
a force of 6lbs acts on an object with a weight of 35 lbs on earth. determine the objects acceleration. final answer must be 5.5
kicyunya [3294]
Weight of the object = 35 lbs
F = ma
m = F/a = 35/32 (with acceleration of 32 ft/s²)
m= 1.09

Again applying the same formula,
a = F/m
a= 6/1.09
a= 5.489

Thus, the acceleration is approximately 5.5 ft/s²!!
5 0
2 months ago
Read 2 more answers
A spring with a spring constant of 0.70 N/m is stretched 1.5 m. What was the force?
inna [3103]

Answer:

1.05 N

Explanation:

K = 0.7 N/m

e = 1.5 m

F =?

According to Hooke's law:

F = Ke

= 0.7×1.5

= 1.05 N

5 0
2 months ago
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