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VMariaS [17]
1 year ago
14

Joe runs 10 m north, 20 m south, 9m south, and then 15 m north. What is Joe's displacement?

Physics
1 answer:
tresset_1 [31]1 year ago
4 0

Answer:

Joes displacement is 54m

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A student is studying the potential energy change of a 50 kg object raised 110 km above Earth's surface. What will be the percen
Law Incorporation [45]

Answer:

The percentage error is given by 99.9 %

Explanation:

Given:

Mass of object m = 50 kg

Height h = 110 km

From the formula of potential energy,

   U = mgh

Where g = 9.8 \frac{m}{s}

   U = 50\times 9.8 \times 110000

Here true value of potential energy,

   U = 50 \times 9.8 \times 11 \times 10^{4}

Approximate value of student,

   U = 50 \times 9.8 \times 110

Absolute error is given by

    = true value - approximate value

    = 50 \times 9.8 \times 11 \times 10^{4} - 50 \times 9.8 \times 110

    = 53846100

Hence percentage error,

    = \frac{53846100}{50 \times 9.8 \times 11 \times 10^{4} }

    = 0.999 \times 100 %

    = 99.9 %

Therefore, the percentage error is given by 99.9 %

7 0
3 years ago
Which one of the following bodies has only potential energy?
olchik [2.2K]
Potential energy is like energy contained. It is not energy displayed.

So option (a) clearly represents energy contained.

a. A cat sitting on the fence

If the cat jumps off the wall, the potential or contained energy is displayed as kinetic energy; which is energy in motion.
6 0
2 years ago
Square root of 40 as a fraction
AysviL [449]

Answer:

158/25

Explanation:

I really hope I helped you!!

Have a good day! :)

8 0
2 years ago
O2 is a molecule.
cestrela7 [59]
1. true is the answer
2. The correct option is this: FIGURE II AND FIGURE IV ARE BOTH COMPOUNDS.Figure two and figure four have components that are of different colors, this means that different atoms had combined together to form a compound.3. dont know yet
4. The figure is a molecule and an element is the correct answer
5. Elements
6. Co2
7. Both are made of two or more atoms.
8. the answer is atom
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3 years ago
Based on the information in the table, which mineral is LEAST likely to be found in Earths rocks
erik [133]

C. Magnesium

Because it has the lowest number. :)

3 0
3 years ago
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