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andrew-mc [135]
3 years ago
12

Check that equation 19.1 is dimensionally correct. the factor cw (specific heat of water is sometimes omitted because its numeri

cal value if 1. what is wrong with doing this?
Physics
1 answer:
Sladkaya [172]3 years ago
8 0
Omitting the 1 will not change the value of the number, but will change the units at the end of the problem
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6 0
3 years ago
A cannonball is fired at a 45.0° angle and an initial velocity of 670 m/s. Assume no air resistance. What is the vertical compon
elixir [45]

Answer:

<h3>473.8 m/s; 473.8 m/s</h3>

Explanation:

Given the initial velocity U = 670m/s

Horizontal velocity Ux = Ucos theta

Vertical component of the cannon velocity Uy = Usin theta

Given

U = 670m/s

theta = 45°

horizontal component of the cannonball’s velocity = 670 cos 45

horizontal component of the cannonball’s velocity = 670(0.7071)

horizontal component of the cannonball’s velocity = 473.757m/s

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Vertical component of the cannonball’s velocity  = 473.757m/s

Hence pair of answer is 473.8 m/s; 473.8 m/s

6 0
3 years ago
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