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Novay_Z [31]
3 years ago
11

An ice boat is coasting along a frozen lake. Friction between the ice and the boat is negligible, and so is air resistance. Noth

ing is propelling the boat. From a bridge someone jumps straight down and lands in the boat, which continues to coast straight ahead. (a) Does the horizontal momentum of the boat change? (b) Does the speed of the boat increase, decrease, or remain the same? Explain.
Physics
1 answer:
zhannawk [14.2K]3 years ago
6 0

Answer:

(A) No

(B) Speed decreases

Explanation:

(A) since there is nothing propelling the boat and the friction between the ice and the boat and also air resistance is negligible the net force of the system in the horizontal direction is zero and hence there is no change in the horizontal momentum of the boat.

(B) Since the person had not velocity in the horizontal direction before landing on the boat but now has one after landing on the boat, the speed of the boat will decrease because the momentum has to be conserved (remember there is no change in it).

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Answer: b. The combination is a mixture because the substances can be separated

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A mixture is obtained when two or more substances or materials are combined without a chemical reaction. This is observed when Jalen combined substance 1 and 2 with only one of the substances becoming visible after the combination.

The other reason is that, a mixture can be separated back into its original constituent, this is evident when the combination was filtered with only substance 2 going through the filter and substance 1 remaining in the filter

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Mary travelled 70 miles/hour due north. This is an example of what?
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0.318 cm. What is the ideal mechanical advantage?
vodomira [7]

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<h3>What is mechanical advantage ?</h3>

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The ideal mechanical advantage is found as;

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The ideal mechanical advantage will be 8.017.

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5 0
2 years ago
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IRISSAK [1]

Answer:

b) Springs oscillate with the same frequency,

Explanation:

expression for frequency of vibration of mass hanging from a spring is given as follows

f = \frac{1}{2\pi} \times \sqrt{\frac{k}{m} }

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Hence frequency of vibration will also be same for both the balls .

4 0
3 years ago
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