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aleksley [76]
3 years ago
11

a hammer is swung so it exerts a 400 N force on a nail. if the hammer and nail are in contact for 0.35 seconds how much impulse

does a hammer create? _______ N*s​
Physics
1 answer:
Anuta_ua [19.1K]3 years ago
8 0

Answer:

140Ns

Explanation:

From Newton's 2nd law of motion

F = ma

F = m∆v/t

==> Ft = m∆v

impulse = Ft = 400 × 0.35 = 140Ns

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Example No. 10
Alexxx [7]

The force constant of the spring is determined as 14,222.2 N/m.

<h3>Force constant of the spring</h3>

Apply the principle of conservation of energy,

K.E = U

where;

  • K.E kinetic energy of the elevator
  • U is elastic potential energy of the spring

¹/₂mv² = ¹/₂kx²

mv² = kx²

k = mv²/x²

Where;

  • m is mass of the elevator
  • v is speed
  • x is compression of the spring

k = (2000 x 8²)/(3²)

k = 14,222.2 N/m

Thus, the force constant of the spring is determined as 14,222.2 N/m.

Learn more about force constant here: brainly.com/question/1968517

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5 0
2 years ago
How many carbon atoms are there in 5 molecules of CHCl3?
lukranit [14]

There are 5 carbon atoms present in the Chemical formula, CHCl_\\{3} .

<h3>What is a chemical formula?</h3>

A chemical formula is used to show the number and type of atoms present in a molecule, using the atomic symbols of the elements and numerical subscripts.

From the chemical formula;

We can deduce that we have the following elements and their corresponding number of atoms in one molecule of the compound;

Carbon = 1 atom

Hydrogen = 1 atom

Chlorine = 3 atoms

So, in 5 molecules of the compound;

Carbon = 1 x 5 = 5 atoms

Hydrogen = 1 x 5 = atoms

Chlorine = 3 x 5 atoms = 15 atoms

In conclusion, from the solution above, we can say that we have 5 atoms of carbon present in 5 molecules of CHCl_3.

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2 years ago
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