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ValentinkaMS [17]
3 years ago
7

True or False: We have a limited amount of fossil fuels. True. False.

Physics
1 answer:
Nina [5.8K]3 years ago
4 0
True because we have limited amount if it
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A 0.772 kg glass jar falls off a shelf
Andrew [12]

Answer:

1.48m

Explanation:

Info given:

mass: 0.772kg

PE = 11.2J

g = 9.81m/s^2

Using KEbottom = PEtop

PE = mgh

Plug in and solve for h (height)

11.2J = mgh

h =11.2J / mg

h = 11.2J / (0.772kg)(9.81m/s^2)

h = 1.48m

4 0
3 years ago
Question 1
valentina_108 [34]

The distance covered is simply the length of the entire trip, which is 12m + 16m, or 28m.

The displacement is the distance from the starting point to the ending point along with the direction of the net motion. The dog walks 12m east then 16m west, so its resultant displacement is 4m west.

6 0
3 years ago
A positively-charged object with a mass of 0.129 kg oscillates at the end of a spring, generating ELF (extremely low frequency)
9966 [12]

Answer:308 N/m

Explanation:

Given

mass\left ( m\right )=0.129 kg

wavelength\left ( \lambda \right )=3.86\times 10^7

We know frequency =\frac{c}{\lambda }=\frac{3\times 10^8}{3.86\tmes 10^7}

f=7.772 Hz

As the frequency of radio waves is same as the frequency at which object oscillates

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

7.772=\frac{1}{2\pi }\sqrt{\frac{k}{0.129}}

7.772\times 2\times \pi =\sqrt{\frac{k}{0.129}}

k=307.70\approx 308 N/m

7 0
3 years ago
To calculate the velocity of an object the of the position vs time graph should be calculated
frutty [35]
<span>The vertical axis represents the velocity of the object</span>
3 0
3 years ago
Read 2 more answers
Help quick (edge 2021)
kow [346]

Answer:

a

Explanation:

8 0
3 years ago
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