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m_a_m_a [10]
3 years ago
8

Q3. A large block of stone is held at a height of 15m having gained 4500J

Physics
1 answer:
xz_007 [3.2K]3 years ago
8 0

Answer:

gpe = mgh \\  = (mg)h

(mg)= weight

pe = (mg)h \\ 4500 = 15(mg) \\ mg = 300n

mg = 300N

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Two one-coulomb point charges are at a distance of 1.67 m from each other. What is the size of the electric force between the tw
pychu [463]

Explanation:

The given data is as follows.

       distance (r) = 1.67 m

     q_{1} = q_{2} = 1 C

It is known that formula for electric force between two charges is as follows.

          F = \frac{kq_{1} \times q_{2}}{r^{2}}

Hence, putting the given values into the above formula as follows.

       \frac{9 \times 10^{9} \times 1 \times 1}{(1.67)^{2}}

            = 3.227 \times 10^{9}

As it is given that mass of  Falcon Heavy rocket is 1421. Therefore, weight of 1 Falcon rocket is as follows.

       weight of 1 falcon rocket = 142 \times 10^{3} \times 9.8

Therefore, number of falcon rockets will be calculated as follows.

         No. of falcon rockets = \frac{3.227 \times 10^{9}}{142000 \times 9.8}

                              = 2.31897 \times 10^{3}

                              = 2318.9 falcons

Thus, we can conclude that force between the two point charges above is equal to the weight of 2318.9 Falcon Heavy rockets.

5 0
3 years ago
A grizzly bear wanders 4 km east, 3 km north, 5 km east, 8 km south, and 6 km west.
ser-zykov [4K]

Distance = 26 km

Explanation

6 0
3 years ago
Read 2 more answers
1. Traditionally, only parties to a contract had rights and liabilities under the contract. This was known as the principle of _
Sladkaya [172]

Answer:

Privity of contract, Assignment

Explanation:

Privity of contract  is the relationship that exist between the parties to a contract which allows them to sue each other meanwhile it prevents a third party from doing so. It is a common law principle which provides that a contract cannot confer rights or impose obligations upon any person who is not a part to the contract.

<u>Assignment:</u> This is the act of transferring all or part of one's rights arising under a contract to another another person.

5 0
3 years ago
Use the drop-down menus to order the steps for writing chemical formulas. Balance the charges. Identify the negative ion and cha
daser333 [38]

Answer:

The order of steps for writing a chemical formula is 3, 2, 1, 5, 4

Explanation:

Balance the charges. Identify the negative ion and charge. Identify the positive ion and charge. Use the information in the ratio to write the chemical formula. Write the ratio of ions that balances the charges.

The order of steps for writing a chemical formula from the options above is:

3.) Identify the positive in and charge.

2.) Identify the negative ion and charge.

1.) Balance the charges.

5.)Write the ratio of ions that balances the charges.

4.) Use the information in the ratio to write the chemical formula.

6 0
3 years ago
A 62.5 kg carpenter at a construction site plans to swing in a circular arc from one roof top to an adjacent roof at the end of
denis23 [38]

Answer:

    v = 9.45 m/s

Explanation:

given,

mass of the carpenter = 62.5 Kg

length of rope = 13.4 m

Capable of exerting force = 1034 N

centripetal force acting on the body

                   F = \dfrac{mv^2}{r}

                   F = \dfrac{62.5\times v^2}{13.4}

                  F =4.664 v²  N

Gravitational force on her =

                  F = m g

                  F = 62.5 x 9.81

                  F = 613.125 N

now,

4.664 v² + 613.125 = 1034

4.664 v² = 420.875

   v²  = 90.24

    v = 9.45 m/s

Maximum speed which she can tolerate = v = 9.45 m/s

7 0
3 years ago
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