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IgorC [24]
3 years ago
7

Through which gas in the table will sound waves travel faster than they would

Physics
2 answers:
WINSTONCH [101]3 years ago
7 0

Answer: b. methane

Explanation: ap3x

Leni [432]3 years ago
4 0

Answer: Methane

Explanation: I just took the AP€X quiz and Methane was the correct answer!

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A 5-kg object slides down a frictionless surface inclined at an angle of 30º from the horizontal. The total distance moved by th
erma4kov [3.2K]

Answer:

Workdone =0

Explanation:

The body is inclined at θ=30°,     s=10m,  m=5kg

Workdone by the object = FsCosθ

but the surface is a friction-less surface, this means coefficient of friction =0

F=μR

F=0*R

F=0

W=FScosθ

W=0*SCosθ

W=0

7 0
3 years ago
Help please, what does gravitational force do according to these answer choices?
laiz [17]

Answer:

the answer is C

Explanation:

gravity forces down not up or sideways.

5 0
3 years ago
If a vector A has components A. 0, and Ay -0, then the magnitude of the vector is negative. Select one: True False
Dima020 [189]

Answer:

False

Explanation:

The magnitude of any vector is given by,

||A||=\sqrt{A_x^2+A_y^2}

The magnitude of anything is never negative. It can be even seen from the formula that the components are squared. A squared value can never be negative. Even if the component is negative the square will be always positive.

So, magnitude of the vector is <u>not</u> negative.

8 0
3 years ago
Read 2 more answers
A ball is thrown upward. As it passes 5.0 m height it is traveling at 4.0 m/s up. What was its initial upward velocity? (a) 7.0
sveticcg [70]

Answer:

c) 10.7m/s

Explanation:

From the exercise we know that at 5m the ball  is traveling at 4m/s

To calculate its initial velocity we need to solve the following equation:

v_{y}^{2}=v_{oy}^{2}+2g(y-y_{o})

Since the initial height is 0

Solving for v_{o}

v_{oy}=\sqrt{v_{y}^{2}-2gy}=\sqrt{(4m/s)^2-2(-9.8m/s^2)(5m)}=10.7m/s

5 0
3 years ago
If a rock has a weight of 30 N on Earth, would its weight be more or less if it was on Jupiter (gravity on Jupiter = 25 m/s2)?
goldenfox [79]
I’m sorry this is not going as planned
8 0
3 years ago
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