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docker41 [41]
3 years ago
8

A car travels 90 meters due north in 15 seconds. Then the car

Physics
1 answer:
tatyana61 [14]3 years ago
6 0
I got you kid It’s A- 2.5m/sb
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PLEASE HELP!! ITS URGENT!!!​
Natasha2012 [34]

Answer:

F = 800 [N]

Explanation:

To be able to calculate this problem we must use the principle of momentum before and after the impact of the hammer.

We must summarize that after the impact the hammer does not move, therefore its speed is zero. In this way, we can propose the following equation.

ΣPbefore = ΣPafter

(m_{1}*v_{1}) - F*t = (m_{1}*v_{2})

where:

m₁ = mass of the hammer = 0.15 [m/s]

v₁ = velocity of the hammer = 8 [m/s]

F = force [N] (units of Newtons)

t = time = 0.0015 [s]

v₂ = velocity of the hammer after the impact = 0

(0.15*8)-(F*0.0015) = (0.15*0)\\F*0.0015 = 0.15*8\\F = 1.2/(0.0015)\\F = 800 [N]

Note: The force is taken as negative since it is exerted by the nail on the hammer and this force is directed in the opposite direction to the movement of the hammer.

6 0
2 years ago
When you turn up the volume on a radio, which of the following change: velocity of sound, intensity, pitch, amplitude, frequency
Xelga [282]
Loudness
its 
true
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5 0
3 years ago
Read 2 more answers
Is it true or false
tester [92]

Answer:

false

Explanation:

8 0
2 years ago
Explain how you find the density of a liquid subtance example corn syrup
STatiana [176]
Use the density formula:

Mass of the substance
————————————
Volume of the substance

This gives you the density.


Corn syrup has a density of about 1.4 grams per cubic centimeter, and has the highest density of all liquids!

Hope this helps!
3 0
3 years ago
Which of these events is an example of resonance?
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An opera singer breaks a thin glass with only the use of her high frequency voice
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