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vodka [1.7K]
3 years ago
15

Need a lot of help plz

Physics
1 answer:
Over [174]3 years ago
3 0
Im sorry i do not understand.. But if im reading your paper close enough, im pretty sure you're supposed to put and item and describe it..Hope this helps!
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A spring scale hung from the ceiling stretches by 6.4 cm when a 2.0 kg mass is hung from it. The 2.0 kg mass is removed and repl
dolphi86 [110]
In the first case, the force acting on the spring is the weight of the mass:
F=mg=(2.0 kg)(9.81 m/s^2)=19.6N
This force causes a stretching of x=6.4 cm=0.064 m on the spring, so we can use these data to find the spring constant:
k= \frac{F}{x}= \frac{19.6 N}{0.064 m}=306.3 N/m

In the second case, the first mass is replaced with a second mass, whose weight is
F=mg=(2.5 kg)(9.81 m/s^2)=24.5 N
And since we know the spring constant, we can calculate the new elongation of the spring:
x= \frac{F}{k}= \frac{24.5 N}{306.3 N/m}=0.080 m=8.0 cm
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3 years ago
Starting at 9a.m., you ride your hover board for 3hrs at an average speed of 6 mph. Out of breath, you stop for tea from noon un
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3 times 6= 18. The average speed is 19 mph.

hope this helps!
6 0
2 years ago
What are facts about balloons?
Nataly_w [17]
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