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Lilit
1 month ago
11

Now Abel and Kato use what they learned to answer the following problem. The initial speed of a tennis ball is 54 m/s and the la

unch angle is θi = 21°. Neglect air resistance. What is the maximum height, h, of the tennis ball? m What is the range, R, of the tennis ball?
Physics
1 answer:
kicyunya [3.2K]1 month ago
6 0
The answer is h = 19.4 m and R = 199.07 m. Explanation: To address this problem, we utilize parabolic motion equations. Initial speed is defined as 54 m/s with a launch angle θi = 21°. The vertical initial speed component is calculated, leading to a maximum height of 19.1 m and a range of 199.07 m upon substituting values into the relevant formulas.
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Calculate the partial pressure of ozone at 441 ppb if the atmospheric pressure is 0.67 atm.
kicyunya [3294]

Answer:

2.95\times 10^{-7}atm

Explanation:

It's provided that

Atmospheric pressure=0.67 atm

We need to determine the partial pressure of ozone at 441 ppb.

Partial pressure of ozone=\frac{441\times atmospheric\;pressure}{10^9} atm

Inserting the given atmospheric pressure

Thus, we find

Partial pressure of ozone=\frac{441\times 0.67}{10^9}=2.95\times 10^{-7} atm

Consequently, the partial pressure of ozone is=2.95\times 10^{-7}atm

5 0
1 month ago
When a pendulum is pulled back from its equilibrium position by 10∘, the restoring force is 1.0 N. When it is pulled back to 30∘
Maru [3345]
Answer: B

Explanation: I choose B because when you pull back something, the force it exerts when released is greater than when you hold it back, especially for a rubber band.

5 0
2 months ago
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Smoking increases ____ levels in the blood, thus increasing the possibility of unwanted clotting.
ValentinkaMS [3465]
It may lead to higher levels of homocysteine, which can harm the inner linings of arteries. Such damage often results from unwanted clotting that can occur due to factors like smoking, which tends to raise unwanted blood clots in the body, ultimately causing these levels to rise and resulting in undesired consequences.
7 0
2 months ago
A system expands from a volume of 1.00 l to 2.00 l against a constant external pressure of 1.00 atm. what is the work (w) done b
Keith_Richards [3271]
The amount of work performed by a system at consistent pressure is defined by the following equation:
W=p \Delta V = p (V_f - V_i)
where
p represents pressure
V_f as the final volume
V_i as the initial volume

Plugging the values given in this case into the formula gives us
W=p (V_f -V_i)=(1.00 atm)(2.00 L-1.00 L)=1.00 L\cdot atm

Considering that 1 atm \cdot L = 101.3 J, the result for the work done becomes
W= 1.00 atm \cdot L = 101.3 J
8 0
2 months ago
Read 2 more answers
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